[User]
I need an OpenSCAD design for a cylindrical drain filter. It's meant to sit inside a drain and catch debris. Here are the parameters I'd like to be able to control:

*   **`drain_diam`**: The inner diameter of the drain it will fit into (range: 20-100mm).
*   **`drain_depth`**: How deep the filter extends into the drain (range: 0-50mm).
*   **`brim_width`**: The width of a brim around the top edge that will sit on the drain opening (range: 0-10mm).
*   **`brim_height`**: The height of that brim (range: 0-25mm).
*   **`hole_width`**: The width of the filter holes (range: 0.75-5mm, with 0.25mm steps).
*  **`hole_height`**: The height of the filter holes (range: 0.75-20mm, with 0.25mm steps).
*   **`hole_spacing`**: The spacing between the edges of the filter holes (range: 1-5mm).
*   **`filter_thickness`**:  The thickness of the filter material itself (range: 0-5mm).

The filter should consist of a cylinder with the specified `drain_diam` and `drain_depth`, with holes cut into the cylindrical wall. The holes should be distributed evenly around the circumference, and also vertically based on the `hole_height` and `hole_spacing`. The brim is a flat flange with a specific `brim_width` and `brim_height` which goes around the top of the main cylinder. It also needs a small lip on the inside edge of the brim to provide a snug fit into the drain opening.

I'd like to use the "Belfry OpenSCAD Library" for placement and duplication functions. Specifically, the following modules from the library should be utilized: `right`, `left`, `back`, `fwd`, `up`, `down`, `xrot`, `yrot`, `zrot`, `xscale`, `yscale`, `zscale`, `xflip`, `yflip`, `zflip`, `xskew`, `yskew`, `zskew`, `mirror_copy`, `xflip_copy`, `yflip_copy`, `zflip_copy`, `move_copies`, `xrot_copies`, `yrot_copies`, `zrot_copies`, `xspread`, `yspread`, `zspread`, `spread`, `xring`, `yring`, `zring`, `grid_of`.

Please provide an OpenSCAD file that implements this.

[Assistant]
DrainFilter.scad:
```
// The diameter of the drain to fit.
drain_diam = 33; // [20:100]

// Depth to stick into the drain.
drain_depth = 35; // [0:50]

// The width of the brim.
brim_width = 2.0; // [0:10]

// The height of the brim.
brim_height = 5.0; // [0:25]

// Width of the filter holes.
hole_width = 1.5; // [0.75:0.25:5]

// Height of the filter holes.
hole_height = 12.0; // [0.75:0.25:20]

// Spacing between hole edges.
hole_spacing = 1.5; // [1:5]

// Thickness of filter.
filter_thickness = 2; // [0:5]

///////////////////////////////////////////////////////////////
// Belfry OpenSCAD Library: Placement and Duplication

pi = 3.141592653589793236 * 1.0; // Math makes this not a configurator param.
tau = pi * 2.0;

module right(x) translate([+x,0,0]) children();
module left(x)  translate([-x,0,0]) children();
module back(y)  translate([0,+y,0]) children();
module fwd(y)   translate([0,-y,0]) children();
module up(z)    translate([0,0,+z]) children();
module down(z)  translate([0,0,-z]) children();

module xrot(x) rotate([x,0,0]) children();
module yrot(y) rotate([0,y,0]) children();
module zrot(z) rotate([0,0,z]) children();

module xscale(x) scale([x,1,1]) children();
module yscale(y) scale([1,y,1]) children();
module zscale(z) scale([1,1,z]) children();

module xflip() mirror([1,0,0]) children();
module yflip() mirror([0,1,0]) children();
module zflip() mirror([0,0,1]) children();

module xskew(ya=0,za=0) multmatrix([[1,0,0,0], [tan(ya),1,0,0], [tan(za),0,1,0], [0,0,0,1]]) children();
module yskew(xa=0,za=0) multmatrix([[1,tan(xa),0,0], [0,1,0,0], [0,tan(za),1,0], [0,0,0,1]]) children();
module zskew(xa=0,ya=0) multmatrix([[1,0,tan(xa),0], [0,1,tan(ya),0], [0,0,1,0], [0,0,0,1]]) children();

module mirror_copy(v) {children(); mirror(v) children();}
module xflip_copy() {children(); mirror([1,0,0]) children();}
module yflip_copy() {children(); mirror([0,1,0]) children();}
module zflip_copy() {children(); mirror([0,0,1]) children();}

module move_copies(a=[[0,0,0]]) for (p = a) translate(p) children();
module xrot_copies(rots=[0]) for (r=rots) rotate([r, 0, 0]) children();
module yrot_copies(rots=[0]) for (r=rots) rotate([0, r, 0]) children();
module zrot_copies(rots=[0]) for (r=rots) rotate([0, 0, r]) children();

module xspread(spacing=1,n=2) for (i=[0:n-1]) right((i-(n-1)/2.0)*spacing) children();
module yspread(spacing=1,n=2) for (i=[0:n-1]) back((i-(n-1)/2.0)*spacing) children();
module zspread(spacing=1,n=2) for (i=[0:n-1]) up((i-(n-1)/2.0)*spacing) children();
module spread(p1,p2,n=3) for (i=[0:n-1]) translate(p1+i*(p2-p1)/(n-1)) children();

module xring(n=2,r=0,rot=true) {if (n>0) for (i=[0:n-1]) {a=i*360/n; xrot(a) back(r) xrot(rot?0:-a) children();}}
module yring(n=2,r=0,rot=true) {if (n>0) for (i=[0:n-1]) {a=i*360/n; yrot(a) right(r) yrot(rot?0:-a) children();}}
module zring(n=2,r=0,rot=true) {if (n>0) for (i=[0:n-1]) {a=i*360/n; zrot(a) right(r) zrot(rot?0:-a) children();}}

module grid_of(xa=[0],ya=[0],za=[0]) {for (x=xa,y=ya,z=za) translate([x,y,z]) children();}

///////////////////////////////////////////////////////////////

$fa = 2;
$fs = 2;

filter_ang = atan2(drain_depth, (drain_diam-2*brim_width)/2);
layers = floor(drain_depth / (hole_height+1.0));

up(drain_depth/2) {
	difference() {
		union() {
			difference() {
				cylinder(d=drain_diam-2*brim_width, h=drain_depth, center=true);
				cylinder(d=drain_diam-2*brim_width-2*filter_thickness, h=drain_depth+1, center=true);
				for (layer = [0:layers-1]) {
					level_h = (layers-layer) * (hole_height+hole_spacing) - drain_depth/2 - (hole_height+hole_spacing)/2 + filter_thickness;
					level_r = drain_diam /2;
					level_n = floor((tau*level_r)/(hole_width+hole_spacing));
					up(level_h) {
						zring(n=level_n, r=level_r) {
							cube([filter_thickness*5, hole_width, hole_height], center=true);
						}
					}
				}
			}
			up(drain_depth/2) {
				down(brim_height/2) cylinder(d=drain_diam, h=brim_height, center=true);
				down(brim_height) down(brim_width) cylinder(d1=drain_diam-2*brim_width, d2=drain_diam, h=2*brim_width, center=true);
			}
		}
		up(drain_depth/2) {
			down((2*brim_width+brim_height)/2) {
				cylinder(d1=drain_diam-2*brim_width-2*filter_thickness, d2=drain_diam-2, h=2*brim_width+brim_height+0.05, center=true);
			}
		}
	}
}
difference() {
	up(filter_thickness/2) cylinder(d=drain_diam-2*brim_width, h=filter_thickness, center=true);
	xspread(hole_width+hole_spacing, n=floor(drain_diam/(hole_width+hole_spacing))) {
		yspread(hole_height+hole_spacing, n=floor(drain_diam/(hole_height+hole_spacing))) {
			cube([hole_width, hole_height, filter_thickness*3], center=true);
		}
	}
}

// vim: noexpandtab tabstop=4 shiftwidth=4 softtabstop=4 nowrap

```


[User]
I'd like to create a customizable card holder for board games, and I need some help with the OpenSCAD code. I've got a few specific requirements and features in mind.

First, the holder needs to be parametric, so I can adjust it to fit various card sizes and stack heights. I need to be able to specify the card's length, width, and the thickness of the stack of cards.

Secondly, I need the holder to have a locking mechanism that allows multiple holders to stack together, and I need a lid that can attach to the top of a single holder. This should also be parametric so I can make adjustments to the fit.

Thirdly, I want to be able to add a custom label to the side of the holder. I'd like to specify the text, font, and whether the label should be engraved or printed on top. This can be achieved using the `write` library with the `writecube` module. I'd like to specify an optional parameter that allows me to not add a label.

Finally, I need an option to tilt the card holder at a specified angle. This would allow for more compact storage in some boxes, and might make the cards easier to draw from the holder during a game.

I've also specified the use of the `write/Write.scad` library to enable the text labeling, so please make sure that is included in your code.

Here's a more detailed breakdown of the parameters I'd like:

*   **Primary Parameters:**
    *   `numberOfHolders`: Number of holders to print.
    *   `numberOfLids`: Number of lids to print.
    *   `cardY`: Card length in mm.
    *   `cardX`: Card width in mm.
    *   `cardStackZ`: Card stack height in mm.
    *   `cardAngle`: Tilt angle of the card holder in degrees.
    *   `fudgeFactor`: A fine-tuning parameter for the lock and key mechanisms.

*   **Secondary Parameters:**
    *   `longWallStrength`: Thickness of the long walls.
    *   `shortWallStrength`: Thickness of the short walls.
    *   `bottomWallStrength`: Thickness of the bottom wall.
    *   `lowerLockY`: Thickness of the lower lock part.
    *   `lowerLockZ`: Height of the lower lock part.
    *   `upperLockY`: Thickness of the upper lock part.
    *   `upperLockZ`: Height of the upper lock part.
    *   `keyRailZLid`: Height of the key rail on the lid.
    *  `keyRailZBody`: Height of the key rail on the holder body.
    *   `stopBitStrength`: Thickness of the stop bit on the lock rail.
    *   `lockNubRadius`: Radius of the lock nub.
    *  `lockNubDistanceToCorner`: Position of the lock nub relative to the corner.
    *   `spaceAroundCard`: Extra space around the cards.
    *   `lidGripStrength`: Strength of the lid's grip.
    *   `lidHoleRadius`: Radius of the hole in the lid.
    *   `printDistance`: Distance between printed objects on the bed.

*  **Label Parameters:**
    * `label`: Text to be added.
    * `font`: Font to be used from `write` library.
    * `style`: Whether to engrave or print the label.

I’m looking for you to generate a complete set of OpenSCAD files, using all of these parameters.

[Assistant]
holder_with_text_and_inclination.scad:
```
/*
 * Author:  Jean Philippe Neumann
 * License: Creative Commons Attribution-ShareAlike 3.0 Unported License
 *          see http://creativecommons.org/licenses/by-sa/3.0/
 * URL:     http://www.thingiverse.com/thing:94611
 *
 * Label text by Frank Scholl
 * Inclination by Alejandro M. Medrano Gil
 */

// MakerBot customizer settings:
// preview[view:south east, tilt:top diagonal]
use <write/Write.scad>

/*
 * parameters
 */

/* [primary parameters] */

// how many card holders to print
numberOfHolders = 1;
// how many lids to print
numberOfLids = 1;

// the length of your cards in mm
cardY = 63;
// the width of your cards in mm
cardX = 41;
// the height of the stack of cards you want to store in mm
cardStackZ = 6;
// the angle at which the card holder is to be tilted
cardAngle=35;
// The fudge factor allows fine tuning the distances between parts in the lock and key mechanisms of the holder. The right value is highly dependent on your printer. Is everything fitting too tight? Try increasing the factor by 0.1. Is everything fitting too loose? Try decreasing the factor by 0.1.
fudgeFactor = 0.5;

/* [secondary parameters] */

longWallStrength = 1.4;
shortWallStrength = 1.2;
bottomWallStrength = 1.4;

// thickness of the lower part of the lock mechanism
lowerLockY = 1.2;
// height of the lower part of the lock mechanism
lowerLockZ = 1.7;
// thickness of the upper part of the lock mechanism
upperLockY = 3.5;
// height of the upper part of the lock mechanism
upperLockZ = 1.2;
// how high is the part of the lid that slides in the locks rail
keyRailZLid = 1.0;
// how high is the part of the holders body that slides in the locks rail
keyRailZBody = 1.0;

// how thick the bit of plastic is that blocks the end of the lock's rail
stopBitStrength = 1.2;
// the "lock nub" is a tiny bump near the end of the lock's rail that makes other holders or lids snap in. This variable sets the size of that nub.
lockNubRadius = 0.45;
// position of the "lock nub"
lockNubDistanceToCorner = 3*stopBitStrength;

// how much extra space to leave around cards
spaceAroundCard = 1;
// how strong the lid's grip is
lidGripStrength = 3;
// how alrge the hole in the lid is
lidHoleRadius = (cardX + 2*spaceAroundCard + 2*longWallStrength)/2 - lidGripStrength;

// distance between objects on the print bed
printDistance = 10;

/* [Label Text] */

// text to be added to the side
label = "My Favorite Card Game";
// which font to use
font = "write/knewave.dxf"; // ["write/Letters.dxf":Letters,"write/orbitron.dxf":orbitron,"write/BlackRose.dxf":BlackRose,"write/knewave.dxf":knewave,"write/braille.dxf":braille]
// printed on top or engraved into the side
style = 0; // [0:Engraved, 1:Printed]

/* derived parameters */
/* [Hidden] */

release = 1;

// holder main body parameters
bodyX = cardX + 2*spaceAroundCard + 2*longWallStrength;
bodyY = cardY + 2*spaceAroundCard + 2*shortWallStrength + 2*upperLockY + 3*fudgeFactor;
bodyZ = cardStackZ + spaceAroundCard/2;

// lock, key and lid parameters
lockZ = lowerLockZ + upperLockZ;
keyZ = lowerLockZ + upperLockZ + fudgeFactor/3;
lidZ = lowerLockZ + upperLockZ - fudgeFactor;
keyRailX = bodyX - 2*stopBitStrength - 2*fudgeFactor;
keyRailY = upperLockY - lowerLockY + 0.7 - fudgeFactor;
keyMainY = cardY + 2*spaceAroundCard + 2*shortWallStrength;

// space around the card stack
cardSpaceX = cardX + 2*spaceAroundCard;
cardSpaceY = cardY + 2*spaceAroundCard;

// hole in the side of the holder
grabHoleX = longWallStrength + cardX/8;
grabHoleY = cardY * 1/2;

// misc
holderZ = bodyZ + keyZ + lockZ;
inclination=-cardAngle;
skewMatrix=[
            [1,0,tan(inclination),0],
            [0,1,0,0],
            [0,0,1,0],
            [0,0,0,1]
           ];

/*
 * putting it all together
 */

if(numberOfHolders != 0) {
	for(i=[0:numberOfHolders-1]) {
		translate([-i*(printDistance + holderZ),0,0])

		if(release == 1) {
			translate([-holderZ, bodyY, 0])
			rotate([0,-90-inclination,180])
			multmatrix(m=skewMatrix)
            holder();
		} else {
			translate([-bodyX, 0, 0])
			multmatrix(m=skewMatrix)
			holder();
		}
	}
}

if(numberOfLids != 0) {
	for(i=[0:numberOfLids-1]) {
		translate([i*(printDistance + bodyX) + printDistance,0,0])
		lid();
	}
}

/*
 * modules
 */

module lid() {
	union() {
		difference() {
			key(bodyX, keyMainY, lidZ, keyRailX, keyRailY, keyRailZLid, true);

			translate([bodyX/2, bodyY/2, -1])
			cylinder(h=lidZ+2, r=lidHoleRadius, $fn=64);
		}
		translate([0, (bodyY-lidGripStrength)/2,0])
		cube([bodyX, lidGripStrength ,lidZ]);
	}
}

module key(mainX, mainY, mainZ, railX, railY, railZ, lidMode) {
	railPartY = 2*railY + mainY;

	translate([(bodyX-mainX)/2, (bodyY-mainY)/2,0])
	union() {
		color([0.5,0.7,0.9])
		cube([mainX, mainY, mainZ]);

		color([0.7,0.7,0.9])
		translate([(mainX-railX)/2,(mainY-railPartY)/2,0])
		cube([railX, railPartY, railZ]);

		if(lidMode == false) {
			color([1,0,0])
			translate([0, -(railPartY-mainY)/2, 0])
			cube([(mainX-railX)/2,railPartY,railZ]);
		}
	}
}

module holder() {
	difference() {
		union() {
			key(bodyX, keyMainY, keyZ, keyRailX, keyRailY, keyRailZBody, false);

			translate([0,0,keyZ])
			cube([bodyX, bodyY, bodyZ]);
			if(style == 1)
			writecube(label,[.4,bodyY/2,bodyZ/2],[bodyX*2, bodyY*2, bodyZ*2],face="right",center=true,font=font,up=3);

			translate([0,0,bodyZ+keyZ])
			lock(bodyX, lowerLockY, lowerLockZ, upperLockY, upperLockZ);
		}
		cardSpace();
		grabHole();
        if(style == 0)
		writecube(label,[-.4,bodyY/2,bodyZ/2],[bodyX*2, bodyY*2, bodyZ*2],face="right",center=true,font=font,up=3);

	}
}

module cardSpace() {
	color([1,0,0])
	translate([(bodyX-cardSpaceX)/2,(bodyY-cardSpaceY)/2,bottomWallStrength])
	cube([cardSpaceX, cardSpaceY, bodyZ+keyZ+bottomWallStrength]);
}

module grabHole() {
	cylinderRadius = 5;
	cubeX = grabHoleX-cylinderRadius;
	cubeY = grabHoleY-cylinderRadius;
	posY = (bodyY-cubeY)/2;

	$fn=64;
	translate([0, posY, -1])
	minkowski() {
		cube([cubeX, cubeY, bodyZ+keyZ+2]);
		cylinder(r=cylinderRadius, h=1);
	}
}

module lock() {
	union() {
		lockPart();
		mirror([0,1,0]) {
			translate([0,-bodyY,0])
			lockPart();
		}
	}
}

module lockPart() {
	union() {
		// lower lock
		color([0.9,0.4,0.3])
		cube([bodyX, lowerLockY, lowerLockZ]);

		// upper lock
		// subtracting 0.01 because of strange holes in the generated STL file
		translate([0,0,lowerLockZ-0.01])
		cube([bodyX, upperLockY, upperLockZ]);

		// stop bit
		color([0,1,0])
		// extra large lock bit / translate -Z because of strange holes in the generated STL file
		translate([bodyX-stopBitStrength, 0, -0.2])
		cube([stopBitStrength, upperLockY, lockZ+0.2]);

		// safety nub
		color([1,0,0])
		translate([bodyX-lockNubDistanceToCorner, upperLockY, lowerLockZ])
		rotate([90,0,0])
		cylinder(r=lockNubRadius, h=upperLockY, $fn=16);
	}
}

```


[User]
Hey, I'm looking to create a customizable arrow design with curved edges, and I'd like to be able to control the shape and size of different parts of the arrow parametrically. I've seen some examples that use overlapping circles and boolean operations to achieve this effect, and that seems like a good starting point.

Specifically, I'd like to define the arrow using four sets of parameters, each set controlling a pair of circles. These sets should each have a 'distance from origin to circle edge', 'radius of circle', and 'angle between +x-axis and circle center'. The idea is:

*   **Set 1:** Controls the tip of the arrow.
*   **Set 2:** Controls the back of the arrow's tip.
*   **Set 3:** Controls the sides of the arrow's shaft.
*   **Set 4:** Controls the tail of the arrow shaft.

By adjusting these parameters, I should be able to create a wide variety of arrow shapes, from very curvy to relatively straight.

It would also be really helpful if the output included the calculated dimensions of the arrow (length and width). This is super important for me to be able to scale this later, so the final design should export this information.

Finally, the design should be adaptable to create both 2D (for laser cutting) and 3D models (for printing), so I would want to specify an extrusion height parameter.

Could you generate a parametric OpenSCAD file (or files, whatever is best) to accomplish this? I'd also like for it to work with libraries if there are some that make this kind of design easier or that provide features that I've described. I've heard of BOSL and BOSL2, but I'm not sure if those would be helpful for this design. I do not need you to include any files for such libraries - I know how to install and use those.

[Assistant]
Curvy_Arrow.scad:
```
//Name: Curvy Arrow
//Created by Ari M. Diacou, April-June 2015
//Shared under Creative Commons License: Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0)
//see http://creativecommons.org/licenses/by-sa/3.0/

//INSTRUCTIONS:
/* The code below produces an arrow with curvy edges. It does this by intersecting and taking the difference of 4 pairs of circles. 2 circles form the tip of the arrow (set1), and 2 form the back of the tip of the arrow(set2). The sides of the shaft are formed by set3, and the tail of the arrow is formed by set 4.

The circles are specified by a modified polar coordinate system called "easy_form" which is ={distance from origin to circle edge, radius of circle, angle between +x-axis and cicle center in degrees}. This coordinate system is SLIGHTLY easier to get a grasp of entering values. Changing the first value will push a curve farther from the origin (the center of the arrow). Lowering the 2nd number will make a line more curvy (by lowering the radius of the circle it creates). Raising the 2nd number will make a line more flat (by increasing the radius of the circle it creates). Changing the 3rd number is how you get position control. The 3rd number is the angle that the angle that the line connecting the origin and the center of the circle will make with the x-axis.Both the first and the third parameters can be negative. Negative radii will fail silently.

It is highly reccommended that this program be used in OpenSCAD and not customizer. There is no input checking, and a lot of edge cases where circles will not intersect. If instead of an arrow looking thing, cutomizer or OpenSCAD show you two circles floating in space, it means that the circles are not intersecting, and the program is failing silently. If you wish to make a 2D file, use 0 for the height (I dont think this works in customizer).

The last 4 functions in this program are used to calculate the points where the circles intersect, which is used to calculate the length and width of the arrow. This information is available through the echo function, and not visible in customizer. So if you want to know the dimensions of your arrow, use OpenSCAD.*/

//The tip of the arrow [origin to edge, radius, polar position angle] e.g. [1,5,35]
set1=[1,5,35];
//The back of the arrow tip [origin to edge, radius, polar position angle] e.g. [0,10,75]
set2=[0,10,75];
//The sides of the shaft [origin to edge, radius, polar position angle] e.g. [.5,10,0]
set3=[.5,10,0];
//The back of the shaft [origin to edge, radius, polar position angle] e.g. [-1.5,10,60]
set4=[-3,10,60];
//Height of your arrow, use 0 offline to output a DXF file
height=1;

/* HIDDEN */
///// Derived Parameters /////
ep=0.05; //epsilon, a small number
tip= intersection(set1,[set1[0],set1[1],180-set1[2]]); echo(str("tip=",tip));
back=intersection(set3,set4); echo(str("back = ",back));
side=intersection(set1,set2); echo(str("side = ",side));
length=tip[1]-back[1]; echo(str("length = ",length));
width=2*max(side[0],back[0]); echo(str("width = ", width));
//real_height = height < ep ? ep : height; //input handl
/////////// MAIN() //////////
//if the height is less than epsilon, output a 2D file, else: output a 3D file with the specified height. I dont know if customizer can output DXF files, so I think this will only work in OpenSCAD.
if(height < ep)
    arrow();
else
    linear_extrude(height) arrow();
echo(str(
    "A suggested name for your arrow is: curvy_arrow-sets=[",set1,set2,set3,set4,"],h=",height
    ));
///////// FUNCTIONS /////////
function intersection(circle1,circle2)=(norm(intersections(circle1,circle2)[0])<=norm(intersections(circle1,circle2)[1]))?intersections(circle1,circle2)[0]:intersections(circle1,circle2)[1];
function xyr_form(easy_form)=[
    //easy_form={distance from origin to circle edge, radius of circle,angle between +x-axis and cicle center}
    //xyr_form={x-cooridante of center,y-coordinate of center,radius of circle}
    (easy_form[0]+easy_form[1])*cos(easy_form[2]), //x=(diff+r)*cos(theta)
    (easy_form[0]+easy_form[1])*sin(easy_form[2]), //y=(diff+r)*sin(theta)
    easy_form[1] //r
    ];
module arrow(){
    top();
    bottom();
    }
module top(){ //The tip of the arrow
    difference(){
        intersection(){
            square(2*tip[1],center=true);
            pair(set2,$fn=200); //The back of the arrow
            }
        pair(set1,$fn=100); //The tip of the arrow
        }
    }
module bottom(){ //The shaft of the arrow
    difference(){
        intersection(){
            translate([0,-2.5,0])
                square(5,center=true);
            pair(set4,$fn=200); //The sides of the shaft
            }
        pair(set3,$fn=100); //The backof the shaft
        }
    }
function chord_of_circle_intersection(d,r,R)=(1/d)*sqrt(4*d*d*R*R-pow(d*d-r*r+R*R,2)); //from: http://mathworld.wolfram.com/Circle-CircleIntersection.html, Equation 8
module pair(triplet){
    /* Makes a pair of circles on the x-y plane for making the 8 arcs of the arrow. An array "triplet" is passed into the function which specifies the position and size of the circles. The 2nd parameter is the radius of the circles, the third is the angle that the line connecting the origin and the center of the circle will make with the x-axis, and the first parameter of the array is the distance between the origin and the nearest edge of the circle. Both the first and the third parameters can be negative. Negative radii will fail silently.*/
    radius=triplet[1];
    x=xyr_form(triplet)[0];
    y=xyr_form(triplet)[1];
    translate([x,y,0])
        circle(radius);
    translate([-x,y,0])
        circle(radius);
}
function intersections(circle1,circle2)=[
    [x1sol(xyr_form(circle1)[0],xyr_form(circle1)[1],xyr_form(circle1)[2],xyr_form(circle2)[0],xyr_form(circle2)[1],xyr_form(circle2)[2]),
    y1sol(xyr_form(circle1)[0],xyr_form(circle1)[1],xyr_form(circle1)[2],xyr_form(circle2)[0],xyr_form(circle2)[1],xyr_form(circle2)[2])],
    [x2sol(xyr_form(circle1)[0],xyr_form(circle1)[1],xyr_form(circle1)[2],xyr_form(circle2)[0],xyr_form(circle2)[1],xyr_form(circle2)[2]),
    y2sol(xyr_form(circle1)[0],xyr_form(circle1)[1],xyr_form(circle1)[2],xyr_form(circle2)[0],xyr_form(circle2)[1],xyr_form(circle2)[2])]
    ];
//The following are the solutions to the intersection of two circles with arbitrary radius and coordinates. Solved with Mathematica (9 Student/Home) on a Raspberry Pi using the algorithm discussed here: http://mathematica.stackexchange.com/questions/80695/formatting-an-equation-xy-to-powx-y, with many thanks to all the respondants. A circle intersects another at 0, 1 or 2 points. If circles do not intersect, then the following solutions would ideally be complex numbers. If they intersect at 1 point then (x1sol,x2sol)=(x2sol,y2sol). In the case of sensible inputs which create an arrow like we have in this program, there will be 2 solutions. In our case we will take the one that is closer to the origin. This will allow us to calculate the length and width of the arrow, so it can be scaled later.
function x1sol(x1,y1,r1,x2,y2,r2)=x1 + (r1*(((-x1 + x2)*(-((-1 + pow(r2,2)/pow(r1,2))/sqrt(pow(-x1 + x2,2)/pow(r1,2) + pow(-y1 + y2,2)/pow(r1,2))) + sqrt(pow(-x1 + x2,2)/pow(r1,2) + pow(-y1 + y2,2)/pow(r1,2))))/(2.*r1) + ((-y1 + y2)*sqrt((1 + ((-1 + pow(r2,2)/pow(r1,2))/sqrt(pow(-x1 + x2,2)/pow(r1,2) + pow(-y1 + y2,2)/pow(r1,2)) - sqrt(pow(-x1 + x2,2)/pow(r1,2) + pow(-y1 + y2,2)/pow(r1,2)))/2.)*(1 + (-((-1 + pow(r2,2)/pow(r1,2))/sqrt(pow(-x1 + x2,2)/pow(r1,2) + pow(-y1 + y2,2)/pow(r1,2))) + sqrt(pow(-x1 + x2,2)/pow(r1,2) + pow(-y1 + y2,2)/pow(r1,2)))/2.)))/r1))/sqrt(pow(-x1 + x2,2)/pow(r1,2) + pow(-y1 + y2,2)/pow(r1,2));
function y1sol(x1,y1,r1,x2,y2,r2)=y1 + (r1*(((-y1 + y2)*(-((-1 + pow(r2,2)/pow(r1,2))/sqrt(pow(-x1 + x2,2)/pow(r1,2) + pow(-y1 + y2,2)/pow(r1,2))) + sqrt(pow(-x1 + x2,2)/pow(r1,2) + pow(-y1 + y2,2)/pow(r1,2))))/(2.*r1) - ((-x1 + x2)*sqrt((1 + ((-1 + pow(r2,2)/pow(r1,2))/sqrt(pow(-x1 + x2,2)/pow(r1,2) + pow(-y1 + y2,2)/pow(r1,2)) - sqrt(pow(-x1 + x2,2)/pow(r1,2) + pow(-y1 + y2,2)/pow(r1,2)))/2.)*(1 + (-((-1 + pow(r2,2)/pow(r1,2))/sqrt(pow(-x1 + x2,2)/pow(r1,2) + pow(-y1 + y2,2)/pow(r1,2))) + sqrt(pow(-x1 + x2,2)/pow(r1,2) + pow(-y1 + y2,2)/pow(r1,2)))/2.)))/r1))/sqrt(pow(-x1 + x2,2)/pow(r1,2) + pow(-y1 + y2,2)/pow(r1,2));
function x2sol(x1,y1,r1,x2,y2,r2)=x1 + (r1*(((-x1 + x2)*(-((-1 + pow(r2,2)/pow(r1,2))/sqrt(pow(-x1 + x2,2)/pow(r1,2) + pow(-y1 + y2,2)/pow(r1,2))) + sqrt(pow(-x1 + x2,2)/pow(r1,2) + pow(-y1 + y2,2)/pow(r1,2))))/(2.*r1) - ((-y1 + y2)*sqrt((1 + ((-1 + pow(r2,2)/pow(r1,2))/sqrt(pow(-x1 + x2,2)/pow(r1,2) + pow(-y1 + y2,2)/pow(r1,2)) - sqrt(pow(-x1 + x2,2)/pow(r1,2) + pow(-y1 + y2,2)/pow(r1,2)))/2.)*(1 + (-((-1 + pow(r2,2)/pow(r1,2))/sqrt(pow(-x1 + x2,2)/pow(r1,2) + pow(-y1 + y2,2)/pow(r1,2))) + sqrt(pow(-x1 + x2,2)/pow(r1,2) + pow(-y1 + y2,2)/pow(r1,2)))/2.)))/r1))/sqrt(pow(-x1 + x2,2)/pow(r1,2) + pow(-y1 + y2,2)/pow(r1,2));
function y2sol(x1,y1,r1,x2,y2,r2)=y1 + (r1*(((-y1 + y2)*(-((-1 + pow(r2,2)/pow(r1,2))/sqrt(pow(-x1 + x2,2)/pow(r1,2) + pow(-y1 + y2,2)/pow(r1,2))) + sqrt(pow(-x1 + x2,2)/pow(r1,2) + pow(-y1 + y2,2)/pow(r1,2))))/(2.*r1) + ((-x1 + x2)*sqrt((1 + ((-1 + pow(r2,2)/pow(r1,2))/sqrt(pow(-x1 + x2,2)/pow(r1,2) + pow(-y1 + y2,2)/pow(r1,2)) - sqrt(pow(-x1 + x2,2)/pow(r1,2) + pow(-y1 + y2,2)/pow(r1,2)))/2.)*(1 + (-((-1 + pow(r2,2)/pow(r1,2))/sqrt(pow(-x1 + x2,2)/pow(r1,2) + pow(-y1 + y2,2)/pow(r1,2))) + sqrt(pow(-x1 + x2,2)/pow(r1,2) + pow(-y1 + y2,2)/pow(r1,2)))/2.)))/r1))/sqrt(pow(-x1 + x2,2)/pow(r1,2) + pow(-y1 + y2,2)/pow(r1,2));
```


[User]
Hey, I'm trying to design a customizable spool bushing for my 3D printer filament stand. I've got an idea of what I want but I need a parametric OpenSCAD design.

Basically, it's a cylinder with a hole in the middle, but with some options:

*   **Main Hole:** I want a parameter to turn the main center hole on or off.
*   **Diameters:** I need parameters for both the inner diameter and outer diameter of the bushing.
*   **Height:** I need a parameter for the overall height of the bushing.
*   **Surrounding Holes:** I also want to have the option of adding a ring of smaller holes around the center.
    *   I need parameters for turning the ring of holes on or off.
    *   I need parameters for the number of holes, the diameter of the holes, and the distance of these holes from the center. The distance of these holes from the center should always be halfway between the inner and outer diameters of the bushing.
*   **Bearing Slots:** Lastly, I need an option to cut out slots for bearings at both ends of the center hole.
    *   I need parameters to turn the bearing slots on or off.
    *   I need parameters for the height of the slots and the diameter of the bearing slots.

I think that's everything. I'm not super familiar with OpenSCAD, so I'm not sure about things like the number of facets, but maybe something around 100 should work to keep it smooth. I'm open to any suggestions that might make it easier to use. Let me know if you need more details, thanks!

[Assistant]
spool_bushing.scad:
```
//the main hole at the center
center=1; // [1:Yes,0:No]
inner=21.5;
outer=52;
height=75;

//the holes surrounding the center
rings=1; // [1:Yes,0:No]
rcount=8;
rdiameter=10;
rdistance=(outer+inner)/4;
//rdistance=rdistance/1.5;

//slots for bearrings at the end of the center
bearing=0; // [1:Yes,0:No]
bheight=5;
bdiameter=6;

faces=100;

difference(){
    cylinder(h=height,d=outer, $fn=faces,center=true);
    if(center){
        cylinder(h=height,d=inner, $fn=faces,center=true);
    }
    if(rings){
        for(i=[0:rcount]){
        rotate(i*360/rcount){
            translate([rdistance,0,0]) cylinder(h=height,d=rdiameter, $fn=faces,center=true);
            }
        }
    }
    if(bearing){
        translate([0,0,height/2]) cylinder(h=bheight*2,d=bdiameter, $fn=faces,center=true);
        translate([0,0,-height/2]) cylinder(h=bheight*2,d=bdiameter, $fn=faces,center=true);
    }
}
//for(i=[0:8]){
//rotate(i*360/9){
//            translate([rrdistance,0,0]) cylinder(h=height,d=rdiameter, $fn=faces,center=true);
//        }
//    }
```


[User]
I'm looking to design a parametric filter for a small pump, like for a fish tank or small hydroponics system. I'd like the filter to have a cylindrical body with a wider diameter filter section and a narrower diameter connector at one end. The filter section should have a mesh screen inside it. I need to be able to adjust all the important dimensions.

Here's what I'm thinking for the parameters:

*   **`filter_diameter`**: The outer diameter of the main filter section.
*   **`connector_diameter`**: The outer diameter of the connector section.
*   **`connector_length`**: The length of the connector section.
*  **`wall_thickness`**: The thickness of the solid walls.
*   **`mesh_space`**: The spacing between the filter mesh threads.
*   **`mesh_height`**: The height/thickness of the filter mesh screen.
*   **`printer_layer_height`**: The layer height of the printer, used to make the mesh a multiple of that to print well.
*   **`printer_skin_size`**: The shell or skin size of the slicer.
*   **`printer_extrusion_width`**: The extrusion width of the printer, used to make the mesh a multiple of that to print well.
*   **`shape`**: A variable to control the circle quality (3:Triangle, 4:Square, 5:Pentagon, 6:Hexagon, 8:Octagon, 16:Rough Circle, 128:Smooth Circle). The default is a smooth circle (128), but I want to be able to change it to see if other shapes are interesting.

The filter section and connector section will be joined by a funnel shaped transition. The length of the funnel should automatically be determined by the difference between the filter and connector diameter (so if the filter is wider it tapers down, and if the connector is wider it tapers up). The filter threads should be a grid of intersecting cuboids, not a helix or spiral type. The mesh should be inset inside the filter so that the outside of the filter has a smooth wall and the grid is interior. The mesh threads should have a width equal to `printer_extrusion_width`, and a height a multiple of the `printer_layer_height` but I will specify its overall height with `mesh_height`.

I need the code to be well organized and easy to modify. I'd really like a system where I can have modules for each distinct part of the filter -- the filter section, the funnel, the connector, and the mesh -- and ideally a single module that brings it all together. I'd like the code to use the standard OpenSCAD libraries, please, as I don't have any others installed. I need to be able to specify all dimensions in millimeters.

[Assistant]
PumpFilter_v04.scad:
```
// Parametric Pump Filter (c) 2015 David Smith
// licensed under the Creative Commons - Attribution - Non Commercial
// http://www.thingiverse.com/thing:869603

/* [Filter] */

// (mm).
filter_diameter = 25;

// (mm)
connector_diameter = 10;

// (mm)
connector_length =14;

// (mm).
wall_thickness = 1.2;

/* [Filter] */

// Spacing between filter threads (mm).
mesh_space=1.5;

// Thickness of the filter screen (mm). It should be a multiple of your slicer's layer height for best results.
mesh_height=2.0;

/* [Slicer] */

// The thickness of your slices (mm). Filter threads are a multiple of this for their height.
printer_layer_height = 0.25;

// The shell or skin size of your slicer (mm) .
printer_skin_size =    0.6;

// The width of your extruded filament (mm). Filter threads are a multiple of this for their width.
printer_extrusion_width = 0.55;

/* [Hidden] */

// Hole Shape
shape= 128; // [ 3:Triangle, 4:Square, 5:Pentagon, 6:Hexagon, 8:Octagon, 16:Rough Circle, 128:Smooth Circle ]

smooth = shape;

funnel_length = max( connector_diameter - filter_diameter,
                     filter_diameter - connector_diameter );
custom_filter();

module custom_filter() {

union() {
	difference() {
		union() {
            // Filter
			cylinder(   h=mesh_height,
                        r=(filter_diameter/2)+wall_thickness, $fn=smooth);

            // Funnel
			translate([0,0,mesh_height])
			cylinder(  h=funnel_length,
                        r1=(filter_diameter/2)+wall_thickness,
                        r2=(connector_diameter/2)+wall_thickness,
                        $fn=smooth);

            // Connector
            translate([0,0,mesh_height+funnel_length])
            cylinder(  h=connector_length,
                        r=(connector_diameter/2)+wall_thickness,
                        $fn=smooth);
	}

        union() {
            translate([0,0,-1])
            // The hole for the screen
            cylinder(   h=mesh_height+1,
                        r=(filter_diameter/2),
                        $fn=smooth);

            // The hole for the funnel
            translate([0,0,mesh_height])
            cylinder(   h=funnel_length,
                        r2=(connector_diameter/2),
                        r1=(filter_diameter/2),
                        $fn=smooth);

            // The hole for the connector
            translate([0,0,mesh_height+funnel_length])
            cylinder(  h=connector_length,
                        r=(connector_diameter/2),
                        $fn=smooth);
        }
	}

	meshscreen_shape(h=mesh_height,
				mesh_w=printer_extrusion_width,
				mesh_space=mesh_space,
				width=filter_diameter,
				layer_h=printer_layer_height);

}
}

module meshscreen_shape(h=2,mesh_w=1,mesh_space=2,width=60,layer_h){
	intersection(){
		cylinder(r=width/2,h,$fn=smooth);
		mesh_raw(h=h,mesh_w=mesh_w,mesh_space=mesh_space,width=width,layer_height=layer_h);
	}
	difference(){
		cylinder(r=width/2,h, $fn=smooth);
		translate([0,0,-h*0.05]) cylinder(r=width/2-0,h=h*1.1, $fn=smooth);
	}
}

module mesh_raw(h=2,mesh_w=1,mesh_space=2,width=50,layer_height){
	for ( j = [0 :(mesh_w+mesh_space): width] )
	{
	   	translate([0,0,0.01])translate([-width/2+j, 0, h/4])cube([mesh_w,width,h/2-layer_height/10],center=true);

		translate([0,0,h/2+.02])translate([0,-width/2+j, h/4])cube([width,mesh_w,h/2],center=true);
	}
}
```


[User]
I'm looking to design a case for a small ham radio transceiver, specifically the "Pixie" 40m band version. I've got a pretty good idea of what I want, and I've even got some measurements to guide us, but I need a parametric design using OpenSCAD. I have this existing `pixie.scad` file that has a lot of the dimensions and structure, but I'd like you to generate a new set of OpenSCAD files, since this one is kind of all over the place. I'll walk through the important parts, and I'm hoping you can generate something that's more modular and easier to customize.

Essentially, the design consists of two main parts: a top cover and a bottom cover, which snap together. The transceiver's PCB sits inside, and there are cutouts for a BNC connector, a couple of audio jacks, and a power connector. The case also needs to accommodate a small battery and a microswitch based Morse key.

Here are the key parameters:

*   **PCB Dimensions**: 51.1mm x 51.1mm x 1.6mm.
*   **PCB Mounting**: The PCB is mounted using four screws, with centers at roughly (40.5 + mounting hole diameter) mm from the center in both x and y directions. The screw hole diameter itself is a parameter.
*   **Component Heights**: There's a 3.0mm gap between the bottom of the PCB and the bottom cover, and a 13.5mm gap between the top of the PCB and the top cover.
*   **BNC Connector**: The BNC connector is 12.0mm in diameter, and it's position is defined relative to the PCB corner and the center of the pcb. I need the height from the top of the pcb to the center to be a parameter.
*   **Audio Jacks**: There are two audio jacks, each 6.0mm in diameter, also positioned relative to the PCB and its center. Their height from the top of the PCB to their center should also be a parameter.
*   **Power Connector**: This will need a rectangular cutout for a DC power plug, and those should be parameters too.
*   **Trimmer**: The case also needs access to a trimmer pot, whose dimensions and position are also included in the `pixie.scad` file I've provided.
*   **Snap Fit**: The top and bottom covers will snap together using a simple ridge. I need parameters to define the diameter and the length of the ridges.
*   **Morse Key**: The Morse key is based on a microswitch. I'll need parameters for the microswitch's width, depth, and height, as well as the key travel. I'll also need parameters for the morse key itself.
*   **Battery**: There's also a space for a battery if it's included. The dimensions for that are also in the `pixie.scad` file. It is a parameter whether to include the space for the battery or not.

Here's what I'm thinking for modularity:

1.  **`base_parameters.scad`**: This file should contain all the basic parameters related to the PCB, mounting, component sizes, wall thicknesses, tolerances, etc. It would also have flags for whether to include the battery or the key.
2.  **`shapes.scad`**: This file should contain functions for making basic shapes, like a centered cube, a cube with rounded edges, and cylinders. These functions should be parametric.
3.  **`connectors.scad`**: This file should have modules to define the cutouts for the BNC, audio jacks, power connector and trimmer. These would take positions and sizes as parameters and use shapes defined in `shapes.scad`.
4.  **`key.scad`**: This file should have all the modules related to the Morse key, including the microswitch bed, mounting pegs and the key itself. It should also have the lock ring which is used to secure the key.
5.  **`case.scad`**: This file should have the main modules for the top and bottom case parts. They would call the modules in the other files to generate the cutouts and features, making use of `shapes.scad` and `connectors.scad`.
6. **`main.scad`**: This file should be the main file to output the parts needed, referencing the other scad files.

I'm thinking the `base_parameters.scad` file should include the following variables as a minimum:

```
// General parameters
tol = 0.5;        // General tolerance
d = 0.01;         // Small delta for differences

// PCB parameters
pcb_x = 51.1;
pcb_y = 51.1;
pcb_z = 1.6;

pcb_mnt_dia = 3.8; // Mounting hole diameter
pcb_mnt_dx = 40.5 + pcb_mnt_dia;
pcb_mnt_dy = 40.5 + pcb_mnt_dia;
pcb_2_bot = 3.0;  // PCB to bottom clearance
pcb_2_top = 13.5; // PCB to top clearance

// BNC connector parameters
bnc_dia = 12.0;
bnc_pos_offset = 7.5 + 14.6/2;  // Position relative to PCB edge
bnc_height = 12.0/2 + 0.3; // Height from PCB top to connector center

// Audio jack parameters
jack_dia = 6.0;
jack_1_pos_offset = 9.4 + 11.5/2; // Position relative to PCB edge
jack_2_pos_offset = 9.3 + 11.5/2;
jack_height = 6.6/2 + 0.15;       // Height from PCB top to connector center

// Power connector parameters
power_pos_offset = 10.6 + 8.9/2;
power_dx = 9.0;
power_dz = 11.0;

// Trimmer parameters
trim_pos_x_offset = 21.8;
trim_pos_y_offset = 21.0;
trim_dia = 5.5;
trim_height = 8.0;

// Snap fit parameters
snap_dia = 1.8;
snap_len_y = 0.3;
snap_len_x = 0.3;

// Wall parameters
wall_thickness = 1.2;
top_wall_thickness = 1.2;
bottom_wall_thickness = 3.6;
corner_radius = 1.2; // for rounded edges

// Morse key parameters
key_x = 12;
key_y = 25;
uswitch_width = 5.8;
uswitch_depth = 12.8;
uswitch_height = 6.6;
key_travel = 1.0;

// Battery parameters
batt_x = 26.0;
batt_y = 53.0;
batt_z = 17.0;

// Feature flags
with_battery = true;
with_key = true;

```
I'm also using the `include` directive for linking files, so that's why it's not listed as a "library" I need to use. I hope you can help me build this project.

[Assistant]
pixie.scad:
```
//
//  case for "pixie" 2 transistor 40 m band transceiver
//
//  design by Egil Kvaleberg, 8 Jun 2015
//
//  note:
//  design origin is center of pcb, underside of top cover surface

part = "bottom"; // [ demo, all, top, bottom, key, ring ]
with_battery = 1; // [ 1:true, 0:false ]
with_key = 1; // [ 1:true, 0:false ]

uswitch_width = 5.8; // microswitch case width
uswitch_depth = 12.8; // microswitch case depth
uswitch_height = 6.6; // microswitch case height
key_travel = 1.0; // microswitch switch travel, with some margin

/* [Hidden] */
batt = [26.0, 53.0, 17.0]; //

pcb = [51.1, 51.1, 1.6];

pcbmntdia = 3.8; // net
pcbmntdx = 40.5 + pcbmntdia;
pcbmntdy = 40.5 + pcbmntdia;

pcb2bot = 3.0; // room from bottom pcb to bottom cover
pcb2top = 13.5; // room from top pcb to top cover

bncdia = 12.0;
bncpos = (7.5+14.6/2)-pcb[0]/2; // from lower r corner
bncheight = 12.0/2 + 0.3; // height of centre from top PCB

jackdia = 6.0;
jack1pos = (9.4+11.5/2)-pcb[0]/2;
jack2pos = pcb[0]/2-(9.3+11.5/2);
jackheight = 6.6/2 + 0.15; // height of centre from top PCB

powerpos = pcb[0]/2-(10.6+8.9/2);
powerdx = 1*9.0;
powerdz = 1*11.0;

trimpos = [pcb[0]/2-21.8, pcb[1]/2-21.0];
trimdia = 5.5;
trimhgt = 8.0;

snap_dia = 1.8; // snap lock ridge diameter
snap_len_y = pcb[1]*0.3; // snap lock length
snap_len_x = pcb[0]*0.3;

key_x = 12;
key_y = 25;
uswitch = [uswitch_width, uswitch_depth, uswitch_height];

wall = 1.2;
caser = wall;
twall = 1.2; // wall size of top
bwall = 3.6; // wall size of bottom

tol = 0.5;
d = 0.01;

extra_x = (with_battery ? batt[0]+wall+2*tol : 0) + (with_key ? key_x+wall+8*tol : 0); // extra space in X

module nut(af, h) { // af is 2*r
	cylinder(r=af/2/cos(30), h=h, $fn=6);
}

module c_cube(x, y, z) {
	translate([-x/2, -y/2, 0]) cube([x, y, z]);
}

module cr_cube(x, y, z, r) {
	hull() {
		for (dx=[-1,1]) for (dy=[-1,1]) translate([dx*(x/2-r), dy*(y/2-r), 0]) cylinder(r=r, h=z, $fn=20);
	}
}

module cr2_cube(x, y, z, r1, r2) {
	hull() {
		for (dx=[-1,1]) for (dy=[-1,1]) translate([dx*(x/2-r1), dy*(y/2-r1), 0]) cylinder(r1=r1, r2=r2, h=z, $fn=20);
	}
}

module snap2(adia, alen) {
		translate([pcb[0]/2+tol, -(snap_len_y+alen)/2, -(pcb2top+pcb[2]+pcb2bot+bwall/2)]) rotate([-90, 0, 0]) cylinder(r=(snap_dia+adia)/2, h=snap_len_y+alen, $fs=0.3);
		//translate([-(snap_len_x+alen)/2, pcb[1]/2+tol, -(pcb2top+pcb[2]+pcb2bot+bwall/2)]) rotate([0, 90, 0]) cylinder(r=(snap_dia+adia)/2, h=snap_len_x+alen, $fs=0.3);
}

//uswitch = [5.8, 12.8, 6.6]
module uswitch_bed() { // microswitch bed
	h = d+pcb2bot+pcb[2]+pcb2top-tol-twall;
	if (with_key) {
		translate([pcb[0]/2+tol+(with_battery ? wall+batt[0]+2*tol : 0)+wall+4*tol+key_x/2, pcb[1]/2 - uswitch[1]/2-wall, -(d+pcb2bot+pcb[2]+pcb2top)])
			difference () {
				c_cube(uswitch[0]+tol+2*wall, uswitch[1]+tol+2*wall, h); // mounting bed outer
				union () {
					c_cube(uswitch[0]-2*wall, uswitch[1]+tol+2*wall+2*d, h-uswitch[2]); // room for contacts and wires
					translate([0, 0, h-uswitch[2]-tol/4]) c_cube(uswitch[0]+tol, uswitch[1]+tol, uswitch[2]+tol); // mounting hole
				}
			}
	}
}

peglen = 3* wall; // length beyond key
pegsiz = pcb[1]*0.1; // BUG: subst

module ring() { // lock ring
	flex = 2.0;
	difference () {
		union () {
			cylinder(h=wall, r=pegsiz/2 + wall, $fn=32);
			translate([pegsiz/2+wall*0.3, (pegsiz-flex)/2+1.5*wall, 0]) cylinder(h=wall, r=1.5*wall, $fn=16);
			translate([pegsiz/2+wall*0.3, -(pegsiz-flex)/2-1.5*wall, 0]) cylinder(h=wall, r=1.5*wall, $fn=16);
		}
		translate([0, 0, -d]) {
			cylinder(h=wall+2*d, r=pegsiz/2, $fn=32);
			translate([pegsiz/2, 0, 0]) c_cube(pegsiz, pegsiz-flex, wall+2*d);
			translate([pegsiz/2+wall*0.3, (pegsiz-flex)/2+1.5*wall, 0]) cylinder(h=wall+2*d, r=0.7*wall, $fn=16);
			translate([pegsiz/2+wall*0.3, -(pegsiz-flex)/2-1.5*wall, 0]) cylinder(h=wall+2*d, r=0.7*wall, $fn=16);
		}
	}
}

module mkey_peg(air) { // morse key mounting peg
	if (with_key) {
		translate([pcb[0]/2+tol+(with_battery ? wall+batt[0]+2*tol : 0)+wall+4*tol+key_x/2, -pcb[1]*0.4, -air-wall-peglen-tol]) {
			if (air != 0) {
				c_cube(pcb[1]*0.1+air, pcb[1]*0.1+air, air+peglen+wall+tol+d); // mounting hole
			} else {
				cylinder(r=pegsiz/2, h=air+peglen+wall+tol+d, $fn=32); // mounting hole
				c_cube(pcb[1]*0.1+air, pcb[1]*0.1+air, air+peglen-wall-tol); // mounting hole
				translate([0, 0, air+peglen]) c_cube(pcb[1]*0.1+air, pcb[1]*0.1+air, wall+tol+d); // mounting hole
			}
		}
	}
}

module mkey_support() { // morse key support (towards mounting peg)
	if (with_key) difference () {
		translate([pcb[0]/2+tol+(with_battery ? wall+batt[0]+2*tol : 0)+wall+4*tol+key_x/2, -pcb[1]*0.4, -(d+pcb2bot+pcb[2]+pcb2top)])
				c_cube(pcb[1]*0.1+2*tol+2*wall, pcb[1]*0.1+2*tol*2*wall, d+pcb2bot+pcb[2]+pcb2top-tol-twall); // mounting hole
		mkey_peg(tol);
	}
}

module mkey(air) { // morse key
	module curve() {
		r = 25.0 / 2; // a bit more than a typical human finger
		if (air == 0) translate([0, key_y/2 + d, twall+tol+twall+sqrt(pow(r,2) - pow(key_x/2-wall,2))]) rotate([90, 0, 0]) {
			cylinder(r=r, h=d+key_y-key_x/2, $fn=80);
			translate([0, 0, d+key_y-key_x/2]) sphere(r=r, $fn=80);
		}
	}
	if (with_key) {
		translate([pcb[0]/2+tol+(with_battery ? wall+batt[0]+2*tol : 0)+wall+4*tol+key_x/2, pcb[1]/2+tol+wall - key_y/2, -twall-tol]) {
			translate([0, -(wall+tol), 0])
				c_cube(key_x+6*tol, key_y, twall); // base frame, covering air gap on sides
			difference() {
				union () {
					translate([0, -(wall+tol)/2, 0])	c_cube(key_x, key_y-(wall+tol), twall+tol+twall); // body
					translate([0, 0, key_travel]) c_cube(key_x+2*air, key_y+2*air, twall+tol+twall-key_travel); //top, extending to edge of case BUG: build issues
				}
				curve();
			}
			if (air != 0) c_cube(key_x+2*air, key_y+2*air, twall+tol+twall+d); // opening in front

		}
		if (air == 0) difference () { // arm
			translate([pcb[0]/2+tol+(with_battery ? wall+batt[0]+2*tol : 0)+wall+4*tol+key_x/2, 0, -twall-tol])c_cube(key_x*0.8, pcb[1], twall); // arm
			mkey_peg(tol); // mounting hole
		}
	}
}

module top() {
	sidewalls();

	difference() {
		union() {
			// lid
			translate([extra_x/2, 0, 0])
				cr_cube(pcb[0]+2*wall+2*tol+extra_x, pcb[1]+2*wall+2*tol, twall, caser);

			// PCB upper supports
			for (dx=[pcbmntdx/2, -pcbmntdx/2]) for (dy=[pcbmntdy/2, -pcbmntdy/2]) {
				//
				translate([dx, dy, -(pcb2top-tol)]) {
					cylinder(r1=pcbmntdia/2+wall, r2=pcbmntdia/2+2.5*wall, h=pcb2top, $fn=20);
				}
			}
			// trimmer access tube
			translate([trimpos[0], trimpos[1], -(pcb2top-trimhgt-tol)])
				cylinder(r=trimdia/2+tol/2+wall, r2=trimdia/2+tol/2+2*wall, h=(pcb2top-trimhgt-tol)+d, $fn=20);
			// morse key mounting peg, if applicable
			mkey_peg(0);

		}
		union () { // subtract:
			// hole for trimmer
			translate([trimpos[0], trimpos[1], -pcb2top]) {
				cylinder(r=trimdia/2+tol/2, h=pcb2top+twall+d, $fn=20);
			}
			translate([trimpos[0], trimpos[1], 0]) {
				cylinder(r1=trimdia/2+tol/2, r2=trimdia/2+tol/2+wall, h=twall+d, $fn=20);
			}
			// hole for key
			mkey(tol);
		}
	}

	//color("red") mkey(0);
}

module sidewalls() {
	difference() {
		union () { // add:
			translate([extra_x/2, 0, /*-(bwall+pcb2bot+pcb[2]+pcb2top)*/twall]) {
				rotate([180, 0, 0])
				cr2_cube(pcb[0]+2*wall+2*tol+extra_x, pcb[1]+2*wall+2*tol, (bwall+pcb2bot+pcb[2]+pcb2top+twall), caser, caser+wall);
			}
		}
		union() { // subtract:
			translate([extra_x, 0, 0]) snap2(tol/2, 2*tol);
			rotate([0,0,180]) snap2(tol/2, 2*tol);
			// room for bottom lid
			translate([extra_x/2, 0, -pcb2bot-pcb[2]-pcb2top-bwall-d]) cr_cube(pcb[0]+2*tol+extra_x, pcb[1]+2*tol, d+bwall+tol, caser/2);
			// room for everything in top wall
			translate([extra_x/2, 0, -d]) cr_cube(pcb[0]+2*wall+4*tol+extra_x, pcb[1]+2*wall+4*tol, twall+2*d, caser+tol);
			// room for pcb
			translate([0, 0, -pcb2bot-pcb[2]-pcb2top]) c_cube(pcb[0]+2*tol, pcb[1]+2*tol, pcb2bot+pcb[2]+pcb2top+d);
			// room for battery
			if (with_battery) translate([pcb[0]/2+tol+wall+batt[0]/2+tol, 0, -pcb2bot-pcb[2]-pcb2top]) c_cube(batt[0]+2*tol, pcb[1]+2*tol, pcb2bot+pcb[2]+pcb2top+d);
			// room for key mechanism and key
			if (with_key) translate([pcb[0]/2+tol+(with_battery ? wall+batt[0]+2*tol : 0)+wall+4*tol+key_x/2, 0, -pcb2bot-pcb[2]-pcb2top]) c_cube(key_x+8*tol, pcb[1]+2*tol, pcb2bot+pcb[2]+pcb2top+d);
			mkey(tol);

			// BNC hole
			translate([bncpos, -pcb[1]/2, -pcb2top+bncheight]) rotate([90,0,0]) {
				cylinder(r=bncdia/2+tol, h=tol+2*wall, $fn=60);
				// also cut out bottom...
				translate([0, -20.0/2, 0]) c_cube(bncdia+2*tol, 20.0, tol+2*wall);
			}
			// jack holes
			for (dx = [jack1pos, jack2pos]) translate([dx, pcb[1]/2, -pcb2top+jackheight]) rotate([-90,0,0]) {
				cylinder(r=jackdia/2+tol, h=tol+2*wall, $fn=60);
				// also cut out bottom...
				translate([0, 20.0/2, 0]) c_cube(jackdia+2*tol, 20.0, tol+2*wall);
			}

			// hole for power plug
			translate([powerpos, -pcb[1]/2, -pcb2top+powerdz/2]) rotate([90,0,0]) c_cube(powerdx+2*tol, powerdz+2*tol, tol+2*wall);

			// holes for wires through inner wall
			for (dy= [pcb[1]/2+tol-7.0/2, -(pcb[1]/2+tol-7.0/2)]) {
				if (with_battery) translate([pcb[0]/2, dy, -pcb2top+1.5]) rotate([0, 90, 0]) cylinder(r=7.0/2, h = 2*tol+wall);
				if (with_key) translate([pcb[0]/2+(with_battery ? batt[0]+wall+2*tol : 0), dy, -pcb2top+1.5]) rotate([0, 90, 0]) cylinder(r=7.0/2, h = 2*tol+wall);
			}
			// hole for power switch
			if (with_key && with_battery) translate([pcb[0]/2+batt[0]+2*wall+7*tol+key_x/2, -pcb[1]/2, -pcb2top+0.0]) rotate([90, 0, 0]) cylinder(r=7.0/2, h = tol+2*wall, $fn=30);
		}
	}

}

module bottom() {
	module support(dx, dy) {
		translate([dx, dy, -(d+pcb2bot+pcb[2]+pcb2top)]) {
			cylinder(r=pcbmntdia/2+wall, h=d+pcb2bot, $fn=20);
			cylinder(r=pcbmntdia/2-tol, h=d+pcb2bot+pcb[2]-tol/2, $fn=20);
		}
	}

	// bottom lid
	translate([extra_x/2, 0, -(bwall+pcb2bot+pcb[2]+pcb2top)]) {
		cr_cube(pcb[0]+extra_x, pcb[1], bwall, caser/2);
	}
	translate([extra_x, 0, 0]) snap2(0, 0);
	rotate([0,0,180]) snap2(0, 0);
	intersection () {
		translate([0, 0, -(pcb2bot+pcb[2]+pcb2top)]) {
			cr_cube(pcb[0], pcb[1], pcb2bot+pcb[2], caser/2);
		}
		union () {
			for (dx=[pcbmntdx/2, -pcbmntdx/2]) for (dy=[pcbmntdy/2, -pcbmntdy/2]) {
				support(dx, dy);
			}
		}
	}

	// BNC lower part, minus hole
	translate([bncpos, -pcb[1]/2, -pcb2top-pcb[2]-pcb2bot-bwall]) c_cube(bncdia, 2*(tol+wall), bwall);
	difference () {
		translate([bncpos, -pcb[1]/2-tol, -pcb2top-pcb[2]-pcb2bot-bwall+(pcb2bot+bwall+bncheight)/2]) rotate([90,0,0]) c_cube(bncdia, (pcb2bot+bwall+bncheight), 2*wall);
		translate([bncpos, -pcb[1]/2, -pcb2top+bncheight]) rotate([90,0,0]) cylinder(r=bncdia/2+tol, h=tol+2*wall+d, $fn=60);
	}
   // jack lower part, minus hole
	for (dx = [jack1pos, jack2pos]) {
		translate([dx, pcb[1]/2, -pcb2top-pcb[2]-pcb2bot-bwall]) c_cube(jackdia, 2*(tol+wall), bwall);
		difference () {
			translate([dx, pcb[1]/2+tol, -pcb2top-pcb[2]-pcb2bot-bwall+(pcb2bot+bwall+jackheight)/2]) rotate([-90,0,0]) c_cube(jackdia, (pcb2bot+bwall+jackheight), 2*wall);
			translate([dx, pcb[1]/2, -pcb2top+jackheight]) rotate([-90,0,0]) cylinder(r=jackdia/2+tol, h=tol+2*wall+d, $fn=60);
		}
	}
	// morse key support peg, replaced by lock ring
	if (false) mkey_support();
   // microswitch bed
	uswitch_bed();
}

if (part=="demo") {
	color("red") mkey(0);
	top();
}
if (part=="top") rotate([180, 0, 0]) top();

if (part=="demo" || part=="bottom") bottom();

if (part=="demo") color("green") {
	translate([-pcb[0]/2, -pcb[1]/2, -pcb2top-pcb[2]]) cube(pcb);
}

if (part=="key") mkey(0);
if (part=="ring") ring(0);

if (part=="all") {
	translate([-pcb[0]/2-wall-4, 0, bwall]) rotate([0, 180, 0]) top();
	translate([pcb[0]/2+wall+4, 0, pcb2top+pcb[2]+pcb2bot+wall+tol]) bottom();
}

```


[User]
Hey, I need an OpenSCAD design for a customizable LiPo battery mount. I've been working on my own, but it's a bit of a mess and I'd like something cleaner and more parametric.

Here are the key things I need:

1.  **Battery Dimensions:** The design should be based on parameters for battery length, width, and height. I'll need to be able to set these to fit different batteries.

2.  **Wall Thickness:** I need to be able to set the thickness of the walls around the battery. I'd like this to be adjustable, with options like a low, medium, and higher thickness. I also want a parameter for overall thickness of the material.

3.  **Mounting Holes:** The mount should have four mounting holes for screws. I need parameters for the hole diameter, and for the distance between the holes, both lengthwise and widthwise.

4.  **Sunk Screws:** I want an option to create countersunk screw holes, so the screw heads sit flush. This should be an on/off parameter.

5.  **LED Light Cutout:** I need an option to create a cutout for a small LED strip, which should be around the battery. If this is enabled it needs to not create mounting holes, and if disabled mounting holes should be created.

6. **Strap Slots:** I would like the option to create a slot for a battery strap.

7. **Thick Edges:** An option to add thick edges at the ends for a more sturdy design.

8. **Mounting Base:** The design needs to have a base that the battery holder sits on. This base should also be customizable, with parameters for its length, width, and thickness, as well as matching parameters for mounting hole distances.

I'm thinking everything should be centered, and there should be no hard coded values, everything needs to be parametric and customizable. I'm open to how you approach the design, but these are the core parameters that are important to me. I'm not using any external libraries.

Thanks!

[Assistant]
Customize_LiPo_mountbase_fixV2.scad:
```
battery_length=102;
battery_height=24;
battery_width=37;
// high is not be tested it can be it will not fit in!
wall_height=2; // [3:low,2:medium,1.5:!high!]
thickness=2; // [1:3]
hole= 3; // [0:8]
sunk_screws=0; // [0:NO, 1:YES]
light=1; // [0:NO, 1:YES]
band_hole=1; // [0:NO, 1:YES]
thick_edge=0; // [0:NO, 1:YES]
//If you don't need it set to 0
mount_basis_length= 125;
//If you don't need it set to 0
mount_basis_width= 58;
mount_basis_thickness= 2; // [1:3]
//mount_basis_length need to be higher than
mb_hole_distance_length= 115;
//mount_basis_width need to be higher than
mb_hole_distance_width= 48;

module Akku(){
cube([battery_length,battery_width,battery_height],center=true);
}

module Case(L,B,H)
{
difference(){
cube([L,B,H],center=true);
Akku();

if(battery_length > 100)
{
translate([25,0,thickness+battery_height/wall_height]){
cube([L,B+0.5,H],center=true);
}
} else {
translate([battery_length/4,0,thickness+battery_height/wall_height]){
cube([L,B+0.5,H],center=true);
}
}

if(light==1)
{
translate([-L/2,0,0])
{
cube([L,battery_width-thickness*4,battery_height-thickness*4],center=true);
}
}

translate([L/2,battery_width/2-thickness*1.5,0])
{
cube([L,thickness*3,battery_height-thickness*2],center=true);
}
translate([L/2,-battery_width/2+thickness*1.5,0])
{
cube([L,thickness*3,battery_height-thickness*2],center=true);
}

if(thick_edge==1)
{
if(battery_length/5 > 20)
{
translate([battery_length,battery_width/2,0])
{
cube([battery_length+20,thickness*3,battery_height-thickness*2],center=true);
}
translate([battery_length,-battery_width/2,0])
{
cube([battery_length+20,thickness*3,battery_height-thickness*2],center=true);
}
} else{
translate([battery_length,battery_width/2,0])
{
cube([battery_length+battery_length/5,thickness*3,battery_height-thickness*2],center=true);
}
translate([battery_length,-battery_width/2,0])
{
cube([battery_length+battery_length/5,thickness*3,battery_height-thickness*2],center=true);
}
}
}

if(band_hole==1)
{
translate([battery_length/5,0,-battery_height/2+1.5])
{
if(battery_length > 60)
{
cube([20,battery_width+thickness*2+1,3],center=true);
} else {
cube([battery_length/3,battery_width+thickness*2+1,3],center=true);
}
}
}

if(light==1&&mb_hole_distance_length>battery_length+thickness*2||light==1&&mb_hole_distance_width>battery_width+thickness*2)
{
translate([battery_length/4,battery_width/4,-battery_height/2-0.1])
{
cube([battery_length/2.5,battery_width/3,thickness*2],center=true);
}
translate([-battery_length/4,-battery_width/4,-battery_height/2-0.1])
{
cube([battery_length/2.5,battery_width/3,thickness*2],center=true);
}
translate([battery_length/4,-battery_width/4,-battery_height/2-0.1])
{
cube([battery_length/2.5,battery_width/3,thickness*2],center=true);
}
translate([-battery_length/4,battery_width/4,-battery_height/2-0.1])
{
cube([battery_length/2.5,battery_width/3,thickness*2],center=true);
}
}else{
translate([mb_hole_distance_length/2,mb_hole_distance_width/2,(-battery_height-thickness*2)/2+mount_basis_thickness/2])
{
cylinder(d=hole,h=mount_basis_thickness*2,$fn=20,center=true);
}
translate([-mb_hole_distance_length/2,mb_hole_distance_width/2,(-battery_height-thickness*2)/2+mount_basis_thickness/2])
{
cylinder(d=hole,h=mount_basis_thickness*2,$fn=20,center=true);
}
translate([mb_hole_distance_length/2,-mb_hole_distance_width/2,(-battery_height-thickness*2)/2+mount_basis_thickness/2])
{
cylinder(d=hole,h=mount_basis_thickness*2,$fn=20,center=true);
}
translate([-mb_hole_distance_length/2,-mb_hole_distance_width/2,(-battery_height-thickness*2)/2+mount_basis_thickness/2])
{
cylinder(d=hole,h=mount_basis_thickness*2,$fn=20,center=true);
}
if(sunk_screws==1)
{
translate([mb_hole_distance_length/2,mb_hole_distance_width/2,(-battery_height-thickness*2)/2+mount_basis_thickness-hole/4])
{
cylinder(d1=hole,d2=hole*2,h=hole/2,$fn=20,center=true);
}
translate([-mb_hole_distance_length/2,mb_hole_distance_width/2,(-battery_height-thickness*2)/2+mount_basis_thickness-hole/4])
{
cylinder(d1=hole,d2=hole*2,h=hole/2,$fn=20,center=true);
}
translate([mb_hole_distance_length/2,-mb_hole_distance_width/2,(-battery_height-thickness*2)/2+mount_basis_thickness-hole/4])
{
cylinder(d1=hole,d2=hole*2,h=hole/2,$fn=20,center=true);
}
translate([-mb_hole_distance_length/2,-mb_hole_distance_width/2,(-battery_height-thickness*2)/2+mount_basis_thickness-hole/4])
{
cylinder(d1=hole,d2=hole*2,h=hole/2,$fn=20,center=true);
}
}
}
}
}

difference(){
translate([0,0,(-battery_height-thickness*2)/2+mount_basis_thickness/2])
{
cube([mount_basis_length,mount_basis_width,mount_basis_thickness],center=true);
}
translate([0,0,(-battery_height-thickness*2)/2+mount_basis_thickness/2])
{
cube([battery_length+thickness*2,battery_width+thickness*2,battery_height+thickness*2],center=true);
}

translate([mb_hole_distance_length/2,mb_hole_distance_width/2,(-battery_height-thickness*2)/2+mount_basis_thickness/2])
{
cylinder(d=hole,h=mount_basis_thickness*2,$fn=20,center=true);
}
translate([-mb_hole_distance_length/2,mb_hole_distance_width/2,(-battery_height-thickness*2)/2+mount_basis_thickness/2])
{
cylinder(d=hole,h=mount_basis_thickness*2,$fn=20,center=true);
}
translate([mb_hole_distance_length/2,-mb_hole_distance_width/2,(-battery_height-thickness*2)/2+mount_basis_thickness/2])
{
cylinder(d=hole,h=mount_basis_thickness*2,$fn=20,center=true);
}
translate([-mb_hole_distance_length/2,-mb_hole_distance_width/2,(-battery_height-thickness*2)/2+mount_basis_thickness/2])
{
cylinder(d=hole,h=mount_basis_thickness*2,$fn=20,center=true);
}

if(sunk_screws==1)
{
translate([mb_hole_distance_length/2,mb_hole_distance_width/2,(-battery_height-thickness*2)/2+mount_basis_thickness-hole/4])
{
cylinder(d1=hole,d2=hole*2,h=hole/2,$fn=20,center=true);
}
translate([-mb_hole_distance_length/2,mb_hole_distance_width/2,(-battery_height-thickness*2)/2+mount_basis_thickness-hole/4])
{
cylinder(d1=hole,d2=hole*2,h=hole/2,$fn=20,center=true);
}
translate([mb_hole_distance_length/2,-mb_hole_distance_width/2,(-battery_height-thickness*2)/2+mount_basis_thickness-hole/4])
{
cylinder(d1=hole,d2=hole*2,h=hole/2,$fn=20,center=true);
}
translate([-mb_hole_distance_length/2,-mb_hole_distance_width/2,(-battery_height-thickness*2)/2+mount_basis_thickness-hole/4])
{
cylinder(d1=hole,d2=hole*2,h=hole/2,$fn=20,center=true);
}
}
}

Case(battery_length+thickness*2,battery_width+thickness*2,battery_height+thickness*2);

```


[User]
Alright, so I'm looking to design a case for an Arduino Uno, specifically one that will house an LCD shield and a couple of HX711 load cell amplifier boards. It's basically going to be a portable weight scale. I've seen some designs out there, but I'd like one that's a bit more flexible and parametric so I can customize it.

Here's the breakdown:

*   **Core Components:**
    *   Arduino Uno board
    *   An LCD Keypad Shield (like the one from the Thingiverse link I mentioned, although I'm not tied to the exact dimensions if you can handle parameterizing things)
    *   Two HX711 amplifier boards (the small rectangular ones, like the Banggood link I gave)
    *   A 9V battery for power.
*   **Case Features:**
    *   A two-part enclosure (top and bottom).
    *   Room for the Arduino Uno and the LCD shield with mounting points. I'd like the LCD screen to be visible through a rectangular window in the top case.
    *   Separate compartments inside for the two HX711 boards.
    *   Space for the 9V battery.
    *   Cutouts for:
        *   USB plug on the side of the Arduino.
        *   Power plug (I'm using a standard 2.1mm DC jack).
        *   Power switch (a small toggle switch).
        *   A reset button on the shield.
        *   The potentiometer on the LCD shield for adjusting contrast. It would be great if that hole could be made with a bit of tolerance so I can adjust it easily.
    *   Push-buttons for the keypad, I need the case to leave a hole for the buttons (5 buttons, plus a reset button as a separate function). I also need a bar (or some structure to keep them together).

*   **Key Parameters (Important!):**
    *   Overall dimensions of the Arduino Uno and LCD Shield (and some buffer space) so the case fits snugly, but not *too* snugly.
    *   Dimensions of the HX711 boards.
    *   Battery size (standard 9V).
    *   Size of the LCD screen viewing window.
    *   Dimensions and spacing of the various buttons.
    *   Width and height of the cutouts for connectors, power switch, etc.
    *   Wall thickness for the case.
    *   Tolerance.
    *   The ability to toggle parts of the case on and off (i.e. whether or not to have a battery compartment, USB plug cutout, etc.). This should be controlled by variables or parameters so I can adjust it.
*   **Libraries**
    *   I would prefer it if you used something like the BOSL2 library if possible for any common functions you may require.

I'm envisioning a parametric design where I can adjust these dimensions and features. I think the best way to approach this would be a main .scad file and possibly a couple of include files for common functions. How does that sound?

I'm not going to provide you with existing code for any of the parts, I'd like you to generate all of the SCAD from scratch based on the description and links that I've included.

[Assistant]
arduino_uno_lcd.scad:
```
//
// arduino lcd keypad shield
//
// design by Egil Kvaleberg, 24 May 2015
//
// notes:
// design origin is top surface of center of lcd/keypad pcbwith_battery ? batt[0]+wall+2*tol : 0
// extra PCB is 20x33.7

part = "top"; // [ top, bottom, button, buttons, all ]
with_battery = 1; // [ 1:true, 0:false ]
extra_room = 20.6; //20.6; // size of extra room, if any, set to 0 otherwise

have_usb_plug = 1; // [ 1:true, 0:false ]
have_power_plug = 0; // [ 1:true, 0:false ]
have_power_switch = 1; // [ 1:true, 0:false ]
have_up_key = 0; // [ 1:true, 0:false ]
have_down_key = 0; // [ 1:true, 0:false ]
have_left_key = 0; // [ 1:true, 0:false ]
have_right_key = 0; // [ 1:true, 0:false ]
have_select_key = 0; // [ 1:true, 0:false ]
have_reset_key = 1; // [ 1:true, 0:false ]
have_plugrow_upper = 0; // [ 1:true, 0:false ]
have_plugrow_lower = 0; // [ 1:true, 0:false ]
have_trimmer_hole = 0; // [ 1:true, 0:false ]

/* [Hidden] */
batt = [17.0, 53.0, 26.0]; //
pcb = [80.1, 57.9, 1.45]; // lcd/keypad shield, net
pcb2floor = 17.0;
pcb2roof = 10.8;
lcdpcb2roof = 7.0;
pcb2lower = 12.8; // distance between main pcbs (top to top)
lcdpcbdx = 0.0;
lcdpcbdy = (14.0 - 7.5)/2 + 0.5; // 0.5 is fudge, don't ask
lcdpcb = [pcb[0], 36.0, 1.5]; // size
lcdframe = [71.2, 24.2, 3.8]; // net size
window = [64.0, 14.0]; // size
windowdx = (4.2 - 4.6)/2;
windowdy = (19.6 - 14.0)/2 + 0.5; // 0.5 is fudge, don't ask
pcbmntdia = 3.1;
pcbmntdx = (72.15 + 3.05)/2; // distance between lcd mounting holes
pcbmntdy = (28.05 + 3.05)/2;
pcbmnt2dia = 3.5;
pcbmnt2dx = -(pcb[0]/2 - 24.5 - 3.6/2 - 0.5); // 0.5 is fudge, don't ask
pcbmnt2dy = (53.1 - 0.7*2 - 3.45)/2;
pcbmnt2adx = pcbmnt2dx - 1.3;
pcbmnt3dx = (pcb[0]/2 - 0.8 - 3.6/2 - 0.5);  // 0.5 is fudge, don't ask
pcbmnt3dy = -(pcb[1]/2 - 8.0 - 3.8/2);
pcbmnt3ady = (pcb[1]/2 - 18.6 - 3.1/2);
pcbmnthead = 6.2; // countersunk
pcbmntthreads = 2.5;
breakaway = 0.3; // have hidden hole for screw, 0 for no extra pegs

button = [-(pcb[0]/2-25.8+6.0/2), -(pcb[1]/2-3.6-6.0/2), 5.3]; // coordinates, and total height from pcb
button_dia = 4.6;
button_dy1 = 4.7;
button_dy2 = -2.0;
button_dx1 = 15.2 - 6.0;
button_dx2 = 23.2 - 6.0;
trimpot = [9.5, 4.4]; // trimpot size, no margin
trimpotdx = -(pcb[0]/2  - 3.9 - 9.5/2);
trimpotdy = pcb[1]/2 - 0.9 - 4.4/2;
trimmer_dia = 2.8; // 2.3 with no margin
trimmer = [-(pcb[0]/2-4.8-trimmer_dia/2), pcb[1]/2-0.7-trimmer_dia/2, 0]; // coordinates of trimmer hole
lowerpcbrx = 9.5; // room at contacts, with margin
powersy = 9.0; // power contact width
powerdy = -(pcb[1]/2 - 5.9 - 9.0/2);
usbsy = 12.3;
usbdy = (pcb[1]/2 - (11.7 + 12.3/2));

plugrow1 = [(pcb[0]/2-24.1+2.56/2), (pcb[1]/2-0.5-2.56/2)]; // coordinates D7 pin
plugrow2 = [(pcb[0]/2-2.3-34.4+2.56/2), -(pcb[1]/2-0.5-2.56/2)]; // coordinates RST pin

frame_w = 2.5; // assembly frame width
snap_dia = 1.8; // snap lock ridge diameter
snap_len = 20.0; // snap lock length
tol = 0.5; // general tolerance
swtol = 0.35; // tolerance for switch
wall = 1.2; // general wall thickness
thinwall = 0.4;
corner_r = wall; // casing corner radius
corner2_r = wall+tol+wall; // corners of top casing
d = 0.01;

extra_y = (extra_room>0 ? extra_room+wall : 0) + (with_battery ? batt[0]+wall+2*tol : 0); // extra space in y

module nut(af, h) { // af is 2*r
	cylinder(r=af/2/cos(30), h=h, $fn=6);
}

module c_cube(x, y, z) {
	translate([-x/2, -y/2, 0]) cube([x, y, z]);
}

module cr_cube(x, y, z, r) {
	hull() {
		for (dx=[-1,1]) for (dy=[-1,1]) translate([dx*(x/2-r), dy*(y/2-r), 0]) cylinder(r=r, h=z, $fn=20);
	}
}

module cr2_cube(x, y, z, r1, r2) {
	hull() {
		for (dx=[-1,1]) for (dy=[-1,1]) translate([dx*(x/2-r1), dy*(y/2-r1), 0]) cylinder(r1=r1, r2=r2, h=z, $fn=20);
	}
}

switchneck = 6.0; // neck of toggle switch
switchbody = 15.0; // height of switch body, including contacts
module tswitch(extra) { // standard toggle switch
	if (have_power_switch) translate([-pcb[0]/2, -3.5, wall + pcb2floor/2 + 4.0]) rotate([90, 0, 0])  rotate([0, -90, 0]) {
		cylinder(r=switchneck/2+extra, h=9.0, $fn=30);
		cylinder(r=2.0/2, h=19.0, $fn=10);
		rotate([180, 0, 0]) c_cube(13.2+2*extra, 8.0+2*extra, 10.5+2*extra);
		for (dx = [-5.08, 0, 5.08]) rotate([180, 0, 0]) translate([dx, 0, 0]) cylinder(r=1.1, h=switchbody, $fn=16);
	}
}

module switchguard() {
	r = 3.0;
	w = 11.5;
	len = 15.0;
	h = wall + pcb2floor/2 + 1.5;

	if (have_power_switch) translate([-pcb[0]/2-tol, -3.5, 0]) {
		rotate ([0, 0, 90]) difference () {
			union () {
				translate([0, r/2, 0]) c_cube(len, r, h);
				translate([0, w/2+wall, 0]) cr_cube(len, w+2*wall, h, r);
			}
			union () {
				translate([0, wall/2, -d]) c_cube(len, wall+2*d, h+2*d);
				translate([0, w/2+wall, -d]) cr_cube(len-2*wall, w, h+2*d, r*0.8);
			}
		}
	}
}

module bottom() {
	module snap2(ex) {
		translate([pcb[0]/2+tol+wall+ex, -snap_len/2, wall+pcb2floor+pcb[2]-frame_w/2]) rotate([-90, 0, 0]) cylinder(r=snap_dia/2, h=snap_len, $fs=0.3);
		translate([-snap_len/2, pcb[1]/2+tol+wall, wall+pcb2floor+pcb[2]-frame_w/2]) rotate([0, 90, 0]) cylinder(r=snap_dia/2, h=snap_len, $fs=0.3);
	}
    module power_usb(extra) {
       if (have_power_plug)
			translate([-pcb[0]/2, powerdy, wall+4.0+(pcb2floor-pcb2lower-pcb[2])-2*extra])
				c_cube(2*(lowerpcbrx-tol), powersy+2*extra, pcb[2]+pcb2lower+2*extra-4.0);
        if (have_usb_plug)
			translate([-pcb[0]/2, usbdy, wall+4.0+(pcb2floor-pcb2lower-pcb[2])-2*extra])
				c_cube(2*(lowerpcbrx-tol), usbsy+2*extra, pcb[2]+pcb2lower+2*extra-4.0);
    }
	module add() {
		hull () for (x = [-1, 1]) for (y = [-1, 1])
			translate([x*(pcb[0]/2+tol+wall-corner_r) + (x>0 ? extra_y : 0), y*(pcb[1]/2+tol+wall-corner_r), corner_r]) {
				sphere(r = corner_r, $fs=0.3);
				cylinder(r = corner_r, h = wall+pcb2floor+pcb[2]-corner_r, $fs=0.3);
		}
		snap2(with_battery ? batt[0]+wall+2*tol : 0);
        rotate([0, 0, 180]) snap2(0);
	}
	module sub() {
        module pedestal(dx, dy, hg, dia) {
            translate([dx, dy, wall]) {
				cylinder(r = dia/2+wall, h = hg, $fs=0.2);
                // pegs through pcb mount holes
                if (breakaway > 0) translate([0, 0, hg])
                        cylinder(r = dia/2 - tol, h = pcb[2], $fs=0.2);
            }
        }
        module pedestal_hole(dx, dy, hg, dia) {
            translate([dx, dy, breakaway]) {
				cylinder(r = dia/2, h = wall+hg-2*breakaway, $fs=0.2);
				cylinder(r = 1.0/2, h = wall+hg+pcb[2]+d, $fs=0.2); // needed to 'expose' internal structure so it dows not get removed
				cylinder(r1 = pcbmnthead/2 - breakaway, r2 = 0, h = pcbmnthead/2 - breakaway, $fs=0.2); // countersunk head
		    }
        }
		difference () {
			// pcb itself
			translate([-(pcb[0]/2+tol), -(pcb[1]/2+tol), wall])
				cube([2*tol+pcb[0], 2*tol+pcb[1], pcb2floor+pcb[2]+d]);
			// less pcb mount pedestals to lcd shield pcb])
            difference ( ){
                pedestal(lcdpcbdx-pcbmntdx, lcdpcbdy-pcbmntdy, pcb2floor, pcbmntdia);
                tswitch(tol);
            }
            pedestal(lcdpcbdx-pcbmntdx, lcdpcbdy+pcbmntdy, pcb2floor, pcbmntdia);
            pedestal(pcbmnt2dx, pcbmnt2dy, pcb2floor-pcb2lower, pcbmnt2dia);
            pedestal(pcbmnt2adx, -pcbmnt2dy, pcb2floor-pcb2lower, pcbmnt2dia);
            pedestal(pcbmnt3dx, pcbmnt3dy, pcb2floor-pcb2lower, pcbmnt2dia);
            pedestal(pcbmnt3dx, pcbmnt3ady, pcb2floor-pcb2lower, pcbmnt2dia);
            // walls for contacts
            difference () {
                union () {
                    translate([0, wall, -tol]) power_usb(tol);
                    translate([0, -wall, -tol]) power_usb(tol);
                    translate([0, wall, -(wall+pcb2floor-pcb2lower-pcb[2]-tol)-4.0]) power_usb(tol);
                    translate([0, -wall, -(wall+pcb2floor-pcb2lower-pcb[2]-tol)-4.0]) power_usb(tol);
                }
                translate([d, 0, 0]) power_usb(tol);
            }
		}
		// hole for countersunk pcb mounting screws, hidden (can be broken away)
		//for (dx = [-pcbmntdx]) for (dy = [-pcbmntdy, pcbmntdy]) pedestal_hole(lcdpcbdx + dx, lcdpcbdy + dy, pcb2floor, pcbmntdia);
        pedestal_hole(pcbmnt2dx, pcbmnt2dy, pcb2floor-pcb2lower, pcbmnt2dia);
        pedestal_hole(pcbmnt3dx, pcbmnt3dy, pcb2floor-pcb2lower, pcbmnt2dia);
        // hole for usb and power
        power_usb(tol);
        // hole for switch
        tswitch(tol);
        // extra room
        if (extra_room > 0) translate([pcb[0]/2+tol+wall+extra_room/2, 0, wall]) {
            translate([0, pcb[1]/2 - 7.0/2, pcb2floor*.8]) rotate([0, -90, 0]) cylinder(r=7.0/2, h=extra_room); // hole in internal wall
            for (dx = [-5.0, 5.0]) translate([dx, pcb[1]/2 - 6.0/2, pcb2floor*.5]) rotate([0, -90, -90]) cylinder(r=6.0/2, h=extra_room, $fn=24); // holes in external wall
            difference () {
                c_cube(extra_room, pcb[1]+2*tol, batt[2]+2*tol);
                for (dy = [0, 20]) translate([0, dy, 0]) rotate([45, 0, 0]) {
                    for (dx = [(extra_room/2-wall/2), -(extra_room/2-wall/2)]) {
                        translate([dx, 0, 0]) c_cube(wall, wall, 30);
                        translate([dx, pcb[2] + 2*tol + wall, 0]) c_cube(wall, wall, 30);
                    }
                }
            }
        }
        // room for battery
        if (with_battery) translate([pcb[0]/2+2*tol+wall+batt[0]/2+(extra_room>0 ? extra_room+wall : 0), 0, wall]) {
            c_cube(batt[0]+2*tol, pcb[1]+2*tol, batt[2]+2*tol);
            translate([0, pcb[1]/2 - 4.0/2, pcb2floor*.8]) rotate([0, -90, 0]) cylinder(r=4.0/2, h=batt[0]); // hole in internal wall
        }
	}
	difference () {
		add();
		sub();
	}
    switchguard();
}

module top() {
	module snap2(ex) {
		translate([pcb[0]/2+tol+wall+ex, -snap_len/2-tol, -frame_w/2]) rotate([-90, 0, 0]) cylinder(r=snap_dia/2, h=snap_len+2*tol, $fs=0.3);
		translate([-snap_len/2-tol, pcb[1]/2+tol+wall, -frame_w/2]) rotate([0, 90, 0]) cylinder(r=snap_dia/2, h=snap_len+2*tol, $fs=0.3);
	}
	module add() {
		hull () for (x = [-1, 1]) for (y = [-1, 1]) {
			translate([x*(pcb[0]/2+tol+wall-corner_r) + (x>0 ? extra_y : 0), y*(pcb[1]/2+tol+wall-corner_r), -frame_w])
				cylinder(r = corner_r+tol+wall, h = d, $fs=0.3); // include frame
			translate([x*(pcb[0]/2+tol+wall-corner2_r) + (x>0 ? extra_y : 0), y*(pcb[1]/2+tol+wall-corner2_r), pcb2roof+wall-corner2_r])
					sphere(r = corner2_r, $fs=0.3);
		}
	}

	module sub() {
		module button_frame(dx, dy) {
          // less button frame pluss one wall
			translate(button) translate([dx, dy, wall+swtol])
				cylinder(r = button_dia/2 + swtol+wall, h=pcb2roof, $fn=32);
       }
       module button_hole(dx, dy, en) {
           translate([button[0]+dx, button[1]+dy, 0])
                cylinder(r = button_dia/2 + swtol, h=pcb2roof+wall+(en ? d : -breakaway), $fn=32);
       }
		module button_room(dx, dy) {
          // room required for button collar
			translate(button) translate([dx, dy, -10])
				cylinder(r = button_dia/2 + swtol+wall, h=10+wall+swtol, $fn=32);
       }
		module plugrow_frame(xy, start, pins) {
			frmheight = 3.0;
			translate([xy[0]+(start+(pins-1)/2)*2.56, xy[1], wall+swtol+frmheight])
				c_cube(pins*2.56+2*tol+2*wall, 2.56+2*tol+2*wall, pcb2roof-frmheight);
       }
		module plugrow_hole(xy, start, pins) {
			translate([xy[0]+(start+(pins-1)/2)*2.56, xy[1], 0])
				c_cube(pins*2.56+2*tol, 2.56+2*tol, pcb2roof+wall);
       }
		// room for bottom case within frame
		hull () for (x = [-1, 1]) for (y = [-1, 1])
			translate([x*(pcb[0]/2+tol+wall-corner_r) + (x>0 ? extra_y : 0), y*(pcb[1]/2+tol+wall-corner_r), -frame_w-d])
                cylinder(r = corner_r+tol, h = d+frame_w, $fs=0.3);
		// snap lock
		snap2(with_battery ? batt[0]+wall+2*tol : 0);
		rotate([0, 0, 180]) snap2(0);
		difference() {
			// room for pcb
			translate([0, 0, -d]) cr_cube(2*tol+pcb[0], 2*tol+pcb[1], d+pcb2roof, 1.0);
			union () {
				// less lcd frame
				translate([windowdx, windowdy, pcb2roof-lcdframe[2]])
					c_cube(lcdframe[0]+2*wall+2*tol, lcdframe[1]+2*wall+2*tol, lcdframe[2]);
              // buttons
				 button_frame(0, button_dy1);
              button_frame(0, button_dy2);
              button_frame(button_dx2, 0); // reset
              button_frame(button_dx1, 0);
              button_frame(-button_dx2, 0);
              button_frame(-button_dx1, 0);
				// plug rows
				if (have_plugrow_upper)
					plugrow_frame(plugrow1, 0, 7);
				if (have_plugrow_lower) {
					difference () {
						plugrow_frame(plugrow2, 0, 6);
			          button_room(button_dx2, 0); // reset
					}
					plugrow_frame(plugrow2, 6+2, 5);
				}
			}

		}
		// lcd module, adding margin within frame only
		translate([windowdx, windowdy, pcb2roof-lcdframe[2]-d])
			c_cube(lcdframe[0], lcdframe[1], lcdframe[2]+tol);
		// lcd window
		translate([windowdx, windowdy, 0])
			c_cube(window[0], window[1], pcb2roof+tol+wall+d);
		// trimpot body
		translate([trimpotdx, trimpotdy, pcb2roof-lcdframe[2]-d])
			c_cube(trimpot[0]+2.0, trimpot[1]+2.0, lcdframe[2]+tol);
		// button hole
       button_hole(0, button_dy1, have_up_key); // up
       button_hole(0, button_dy2, have_down_key); // down
       button_hole(button_dx2, 0, have_reset_key); // reset
       button_hole(button_dx1, 0, have_right_key); // right
       button_hole(-button_dx2, 0, have_select_key); // select
       button_hole(-button_dx1, 0, have_left_key); // left
		// plug rows
		if (have_plugrow_upper)
			plugrow_hole(plugrow1, 0, 7);
		if (have_plugrow_lower) {
			plugrow_hole(plugrow2, 0, 6);
			plugrow_hole(plugrow2, 6+2, 5);
		}
		// trimmer hole for screw
		translate(trimmer) {
			cylinder(r = trimmer_dia/2 + tol, h=pcb2roof+wall+(have_trimmer_hole ? d : -breakaway), $fn=16);
		}
       // extra room
       if (extra_room > 0) translate([pcb[0]/2+tol+wall+extra_room/2, 0, -d]) {
            cr_cube(extra_room, pcb[1]+2*tol, pcb2roof, 1.0);
       }
       // room for battery
       if (with_battery) translate([pcb[0]/2+2*tol+wall+batt[0]/2+(extra_room>0 ? extra_room+wall : 0), 0, -d]) {
            cr_cube(batt[0]+2*tol, pcb[1]+2*tol, pcb2roof, 1.0);
       }
	}
	difference () {
		add();
		sub();
	}

	// pcb support pegs
	for (dx = [-pcbmntdx, pcbmntdx]) for (dy = [-pcbmntdy, pcbmntdy])
		translate([lcdpcbdx + dx, lcdpcbdy + dy, pcb2roof-lcdpcb2roof]) {
            cylinder(r = pcbmntdia/2 +wall, h = lcdpcb2roof, $fs=0.2);
            translate([0, 0, -pcb[2]]) cylinder(r = pcbmntdia/2 - tol, h = pcb[2]+d, $fs=0.2); // pegs
         }
    difference () {
        translate([pcbmnt2dx, pcbmnt2dy, 0]) {
            cylinder(r = pcbmnt2dia/2 +wall, h = pcb2roof, $fs=0.2);
            translate([0, 0, -pcb[2]]) cylinder(r = pcbmnt2dia/2 - tol, h = pcb[2]+d, $fs=0.2); // pegs
            translate([0, (pcb[1]/2-pcbmnt2dy)/2 + wall, 0]) c_cube(wall, pcb[1]/2-pcbmnt2dy, pcb2roof); // support
         }
         // lcd/keypad pcb plus margin of 2.0
         translate([lcdpcbdx, lcdpcbdy, -d])
			c_cube(lcdpcb[0], lcdpcb[1] + 2*tol, d + 2.0 + pcb2roof-lcdpcb2roof);
     }

    translate([pcbmnt3dx, pcbmnt3dy, 0]) {
        cylinder(r = pcbmnt2dia/2 +wall, h = pcb2roof, $fs=0.2);
        translate([0, 0, -pcb[2]]) cylinder(r = pcbmnt2dia/2 - tol, h = pcb[2]+d, $fs=0.2); // pegs
        translate([(pcb[0]/2-pcbmnt3dx)/2+wall, 0, 0]) c_cube(pcb[0]/2-pcbmnt3dx, wall, pcb2roof); // support
    }
}

module button() {
    hh = 0.7 + pcb2roof+wall-button[2];
    cylinder(r=button_dia/2 + wall*0.5, h=wall, $fs=0.3); // collar is wall*0.5
    cylinder(r=button_dia/2, h=hh, $fs=0.3);
    translate([0, 0, hh-button_dia*sin(60)]) intersection () {
        sphere(r=button_dia, $fs=0.1);
        cylinder(r=button_dia/2, h=10, $fs=0.1);
    }
}

module buttonbar(x0, y0, x1, y1) {
    translate([x0-wall/2, y0-wall/2, 0]) cube([wall+x1-x0, wall+y1-y0, wall]);
}

//
// comment out the various pieces here
//

if (part == "button") button();

bardist = 9.0;
if (part == "buttons") { // with bar that connects

	buttonbar(-button_dx2, bardist, button_dx2, bardist);
    if (have_select_key) translate([-button_dx2, 0, 0]) {
		buttonbar(0, 0, 0, bardist);
		button();
	}
    if (have_left_key) translate([-button_dx1, 0, 0]) {
		buttonbar(0, 0, 0, bardist);
		 button();
	}
    if (have_up_key) translate([0, button_dy1, 0])  {
		buttonbar(-button_dx1/2, 0, -button_dx1/2, bardist-button_dy1);
		buttonbar(-button_dx1/2, 0, 0, 0);
		button();
	}
    if (have_down_key) translate([0, button_dy2, 0]) {
		buttonbar(button_dx1/2, 0, button_dx1/2, bardist-button_dy2);
		buttonbar(0, 0, button_dx1/2, 0);
		button();
	}
    if (have_right_key) translate([button_dx1, 0, 0])  {
		buttonbar(0, 0, 0, bardist);
		button();
	}
    if (have_reset_key) translate([button_dx2, 0, 0])  {
		buttonbar(0, 0, 0, bardist);
		button();
	}
}
if (part=="bottom" || part=="all") translate([0, -35, 0]) bottom();
if (part=="top" || part=="all") translate([-0, 35, pcb2roof+tol+wall]) rotate([180,0,0]) top();

```


[User]
Hey, I'm looking to design a customizable lighter case in OpenSCAD. I have some basic ideas, but I'd like you to generate the code.

Here's what I'm thinking:

**Core Shape:**

*   The case should have a rounded rectangular shape. Think of it like a stretched cylinder with flat ends.
*   It needs to have two internal cutouts to fit the lighter: one slightly smaller at the bottom, and a slightly larger one at the top.
*   I need to be able to adjust the following dimensions:
    *   `bottom_depth` (depth of the bottom cutout)
    *   `bottom_width` (width of the bottom cutout)
    *   `top_depth` (depth of the top cutout)
    *   `top_width` (width of the top cutout)
    *   `height` (overall height of the case)
    *   `thick` (wall thickness of the case)

**Text Elements:**

*   I want to add two lines of text on the case.
*   Each line of text should be independently controllable with the following:
    *   `text1` (string for the first line of text)
    *   `text2` (string for the second line of text)
    *   `raise1` (option to make the first text raised or cut out)
    *   `raise2` (option to make the second text raised or cut out)
    *   `fontsize` (the font size of the text)
    *   `font_name` (I should be able to specify a font or pick from a list)

**Additional Features:**

*   I want an option to add small holes on the sides of the case.
*   `holes` (option to enable or disable side holes)

**Font Selection:**

* I'd like to have a list of selectable fonts, but also the option to use any Google font using the `font_name` variable. Some fonts I'd like to be included in the list are `Limelight`, `Alfa Slab One`, `Indie Flower`, `Lobster`, `Oxygen`, `Kaushan Script`, `Bangers` as well as `write/braille.dxf` if that is possible. I'll also need to be able to change the `fontsize`.

**Output**

* I'd like to be able to adjust all the variables from within a main scad file. So there should be one main file and any library files if they are needed.
* I'm not going to try to get the AI to improve any existing code, so you can generate all of it from scratch.

Can you create the OpenSCAD files for this? I don't think I need any external libraries for this, but if I am wrong let me know.

[Assistant]
feuerzeug5.scad:
```
/**

  Lighter hull for LUX(tm)

**/

//Font to use
use <write/Write.scad>  //Change to directory where write.scad resides;

/* [General] */

// wall thickness
thick = 1.5;

// Raised text1?
raise1 = "no"; // [no:No, yes:Yes]
text1 = "Feuerzeug" ;

// Raised text2?
raise2 = "yes"; // [no:No, yes:Yes]
text2 = "Ullrich's" ;

////font = "Broadway";

// choose font
///select_font="Broadway" ;
select_font="Limelight" ;//[Limelight,Alfa Slab One,Indie flower,Lobster,Oxygen,Kaushan Script,Bangers,write/braille.dxf:Braille]
// or type in a Google font name (see https://www.google.com/fonts)
font_name="";

///font="orbitron.dxf"; //[write/orbitron.dxf:Futuristic,write/Letters.dxf:Basic,write/knewave.dxf:Round,write/BlackRose.dxf:Classic,write/braille.dxf:Braille]

use_fontname=(font_name!="");

font=use_fontname?font_name:select_font;

//Height of characters [mm]
fontsize=8;  //[5:20]

// Should the hull have small holes on the side?
holes = "yes"; // [no:No, yes:Yes]

/* [Dimension adjust] */

// Use these parameters if needed for a tighter or looser fit [mm]
bottom_depth = 11.5 ;
bottom_width = 23.5;

top_depth = 13 ;
top_width = 24.5;

height = 67;

do_smallholes=(holes=="yes");
dont_raise1=(raise1=="no");
dont_raise2=(raise2=="no");

feuerzeughuelle();
//textdeco();

module plate(depth,width,t=1)
{
  r= depth/2;
  hull(){
    dist= width-depth;
    translate([-dist/2,0,0])
    {
        cylinder(t , r=r) ;
        translate([dist, 0, 0]) cylinder(t,r=r) ;
    }
  }
}

module cutout()
{
    hull(){
        plate(bottom_depth, bottom_width);
        translate([0,0,height])
            plate(top_depth, top_width,t=2);
    }
}

module huelle(depth,width)
{
    translate([0,0,-thick])
    hull(){
        plate(depth+2*thick, width+2*thick);
        translate([0,0,height+thick])
            plate(depth+2*thick, width+2*thick);
    }
}

module textdeco(h=4,text="Feuerzeug")
{

    translate([
       0,
       (top_depth)/2,
       height/2]) rotate([-90,-90,0])
    linear_extrude(height = h)
    text(text,font=font,size=fontsize,halign="center",valign="center");
}

module smallholes()
{
    for (i=[10,20,30,40,50,60])
    {
        translate([-25,0,i-3]) rotate([90,0,90])
          cylinder(50,r=4);
    }
}

module feuerzeughuelle(t1=text1,t2=text2)
{
    difference()
    {

        huelle(top_depth,top_width);

        // platz fuers fuerzeug
        cutout();

        //bodenloch
        translate([0,0,-thick*2]) cylinder(thick*3,r=4);

       // cutout text
       if(dont_raise2)
            translate([0 ,-thick,0]) textdeco(text=text2);
       if(dont_raise1)
            rotate([0,0,180]) translate([0 ,-thick,0]) textdeco(text=text1);

       if(do_smallholes)
       // side holes
        smallholes();
    }
    // applied text
    if(!dont_raise2)  textdeco(thick+thick,text=text2)  ;
    if(!dont_raise1) rotate([0,0,180]) textdeco(thick+thick,text=text1)  ;
}

```


[User]
I'm looking to create a customizable, multi-ring gimbal system in OpenSCAD, similar to the design on Thingiverse (thing:802145), but with more flexibility in how the rings are angled. The idea is to have a series of concentric rings, each connected to the next by a set of pins. However, instead of the 90-degree offset that's typical, I want to be able to specify the rotation angle between each ring using a variable.

Here's a breakdown of the parameters I'd like to be able to control:

*   **`largest_diameter`**: The outer diameter of the outermost ring, in millimeters.
*   **`rings`**: The number of rings in the gimbal, which will also determine how many connections we have between the rings.
*   **`ring_thickness`**: The thickness of each ring, in millimeters.
*   **`ring_height`**: The height of each ring, in millimeters.
*   **`ring_spacing`**: The space between each ring, in millimeters.
*   **`gimbal_angle`**: The rotation angle, in degrees, between each adjacent ring. For example, if set to 45, the first ring would be at 0 degrees, the next at 45, then 90, then 135, and so on.
*   **`resolution`**: The level of detail for rendering the circles, controlling the number of segments. A lower value like 30 would mean "Draft" and render faster. A higher value like 80 would mean "Smooth" and look better but take longer to render.

Each ring should have a simple cylindrical shape. I want to create pins connecting the rings, using a similar cone system where the cone is located on the inner edge of each ring, that will interface with the cone on the outside of the next smaller ring. I need the script to calculate the diameters and placement for the inner and outer rings using the parameters provided. And I need the rings to rotate around the Z axis. The outermost ring doesn't have anything that connects to it on the outside and the innermost ring doesn't have anything connecting to it on the inside. Make sure the pins have enough space to rotate freely, even if using a smaller spacing.

I'd like the code to be parametric. This means I'd need to use a module-based approach for generating each ring, and for placing the connectors between the rings. It should be possible to use these modules to generate multiple gimbals with different values.

I’m thinking the design could be built from a single .scad file. I don't need you to worry about making the parameters too small for printing. The user can figure that out.

[Assistant]
easy_gyro_angles.scad:
```
/*[Gimbal Settings]*/
//in mm
largest_diameter = 60; //[40:140]
//prefered number of rings, limited by largest diameter
rings = 5; //[1:22]
//thickness of each layer, in mm
ring_thickness = 3; //[2:.1:10]
//hieght of the gimbal, in mm
ring_height = 8; //[3:.1:15]
//in mm
ring_spacing = 1; //[.3:.1:2]
//angle to move the gimbal for each ring
gimbal_angle = 45; //[0:180]
//how detailed is the surface
resolution = 50; //[30:Draft, 50:Normal, 80:Smooth]

//lets draw some rings!
for(i = [0 : rings - 1]) {

    //we use i to set the diameter of each ring
    current_outer_diameter = largest_diameter - ((ring_thickness + ring_spacing) * 2 * i);

    //lets check the diameter of the next innermost ring
    next_outer_diameter = largest_diameter - ((ring_thickness + ring_spacing) * 2 * (i + 1));

    //are we an innermost or outermost ring?
    //we are an innermost ring if we either are the last ring requested
    //or if the next ring would be too small to generate
    innermost = ((i == rings - 1) || (next_outer_diameter <= ring_thickness * 4)) ? true : false;
    //the first ring we generate is always the outermost ring
    outermost = (i == 0) ? true : false;

    //we don't want to draw rings that aren't actually rings
    if (current_outer_diameter > ring_thickness * 4) {
        //gimbals need orthogonally rotating rings, so lets turn each ring
        rotate([0,0,gimbal_angle * i]) {
            //everything besides diameter, inner and outer is the same for every ring
            axial_ring(current_outer_diameter,ring_thickness,ring_spacing,ring_height,resolution,innermost,outermost);
        }
    }
}

module ring(outer_diameter, thickness, height, resolution)
{
    //this is a value we'll use to make sure our shapes
    //overlap when we are cutting one out of another
    epsilon = .01;

    outer_radius = outer_diameter / 2;
    inner_radius = outer_radius - thickness;

    //this gives us the bounding box of the ring (plus a border epsilon units wide)
    cutter_width = (outer_radius + epsilon) * 2;

    //move the ring onto the ground plane
    translate([0,0,height / 2]) {
        //rotate the profile around a central axis to create the ring
        rotate_extrude($fn = resolution, convexity = 3){
            difference(){
                //this builds the cross section of the curved wall of the ring
                //outer vertical radius
                circle(r = outer_radius, $fn = resolution);
                //inner vertical radius
                circle(r = inner_radius, $fn = resolution);

                //cut a flat top into the profile
                translate([0,cutter_width / 2 + height / 2]) {
                    square([cutter_width,cutter_width], center = true);
                }

                //cut a flat bottom into the profile
                translate([0,-(cutter_width / 2 + height / 2)]) {
                    square([cutter_width,cutter_width], center = true);
                }

                //cut away the extra scrap
                translate([-cutter_width / 2,0]) {
                    square([cutter_width,cutter_width], center = true);
                }
            }
        }
    }
}

module axial_ring(outer_diameter, thickness, spacing, height, resolution, innermost = false, outermost = false)
{
    //this is a value we'll use to make sure our shapes
    //overlap when we are cutting one out of another
    epsilon = .01;

    outer_radius = outer_diameter / 2;
    inner_radius = outer_radius - thickness;

    //this gives us a perfect axis that won't interfere with other rings
    axis_height = min(thickness - epsilon, height / 2);

    //parts to cut away
    difference() {
        //all the solid parts
        union() {
            ring(outer_diameter, thickness, height, resolution);

            //are we not an innermost ring?
            if(!innermost) {
                //then we add the cones for our inner axis
                //cone 1
                translate([0, (inner_radius + epsilon), height / 2]) {
                    rotate([90,0,0]) {
                        cylinder(r1 = axis_height, r2 = 0, h = axis_height , $fn = 24);
                    }
                }
                //cone 2
                translate([0, -(inner_radius + epsilon), height / 2]) {
                    rotate([-90,0,0]) {
                        cylinder(r1 = axis_height, r2 = 0, h = axis_height , $fn = 24);
                    }
                }
            }
        }

        //using a smaller gap between the axis vs the rings
        //produces a lower friction gyro because the rings can never quite touch each other
        //most printers will have a hard time with a gap smaller than .2mm
        //so we don't allow it to go lower than that
        //above a 1mm gap the gyro will be too loose so we don't allow it to go above that
        axis_spacing = max(.2, min(1, spacing / 2));

        //are we not an outermost ring?
        if(!outermost) {
            //then we cut away the cones for our next ring out
            //cone 1
            translate([-outer_radius, 0, height / 2]) {
                rotate([0,90,0]) {
                    cylinder(r1 = axis_height, r2 = 0, h = axis_height - spacing + axis_spacing, $fn = 24);
                }
            }
            //cone 2
            translate([outer_radius, 0, height / 2]) {
                rotate([0,-90,0]) {
                    cylinder(r1 = axis_height, r2 = 0, h = axis_height - spacing + axis_spacing , $fn = 24);
                }
            }
        }
    }
}

```


[User]
Hey, I'm looking for an OpenSCAD design for a flexible grommet, kind of like a plug to go in a hole in some sheet metal. I've seen similar designs before, often used for wire routing or just plugging up unused holes.

Here’s what I'm picturing: The grommet will have a top cap, then a middle section that fits snugly in the hole, and then a bottom section that helps hold it in place. The top and bottom should be slightly wider than the middle section.

I need it to be parametric so I can easily adjust the dimensions. Specifically, I’d like to control:

*   **`top_height`**: The height of the top cap.
*   **`groove_height`**: The height of the middle section that fits in the hole.
*   **`top_width`**: The diameter of the top cap.
*   **`mid_width`**: The diameter of the middle section that fits in the hole.

I'd like the bottom to have the same height as the top but be a slightly smaller diameter than the top cap, something like 0.7*top_width, and have a taper to the diameter of the middle section. Also, the hole in the middle should go all the way through and be .7 * mid_width.
It should be a difference, so the solid and the hole cut into it.

I want this all in OpenSCAD, and ideally, it should be relatively simple to adjust the core dimensions and hole size. I'm not using any external libraries so you don't need to worry about those. I'd appreciate it if you could include comments so I can easily read the code. Thanks!

[Assistant]
grommet_closed.scad:
```
//CUSTOMIZER VARIABLES

top_height=5; // [0:30]
groove_height=3; // [0:30]
top_width=40; // [0:100]
mid_width=32; // [0:100]

//CUSTOMIZER VARIABLES END

grommet_cap(top_height,mid_width,top_width,groove_height);

module top(h=5,r=10) {
  cylinder(h,r,r);
}

module bottom(h=5,r=10) {
  cylinder(h,r,.7*r);
}

module mid(h=3,r=7) {
  cylinder(h,r,r);
}

module solid(h=5,r1=10,r2=15,g=3) {
  union() {
    top(h,r2);
    translate([0,0,h]) mid(g,r1);
    translate([0,0,h+g]) bottom(h,r2);
  }
}

module grommet_cap(h,r1,r2,g) {
  difference() {
    solid(h,r1,r2,g);
    translate([0,0,1.25*h]) cylinder(2*(h+g),.7*r1,.7*r1);
  }
}

```