101 lines
3.9 KiB
OpenSCAD
101 lines
3.9 KiB
OpenSCAD
// this SCAD file defines the top plate for the case of a neotrellis monome-compatible grid controller.
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// the file is designed to be parametric, for easier testing.
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// first, we declare some parameters, that will be useful to tweak while testing the model:
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// TODO apply correct tolerances in the correct places
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// TODO button placement seems weird?
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pcb_size = 60; // the PCB is 60x60mm square
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pcb_depth = 7.57; // the PCB is 7.57mm deep, overall (including connector + lEDs)
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connector_depth=5.7; // the connector on the bottom of the PCB is 5.8mm thick.
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pcb_thickness= 1.7; // the PCB itself (just the board, w/o components) is roughly 1.7mm thick
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support_width=5; // width of support structure walls
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support_depth=10; // depth of support structure wall
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floor_depth = 1; // depth of the bottom floor of the support
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wall_height = (pcb_depth-connector_depth)+4; // height of walls above the top of the supports
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wall_width = 5; // width of walls above the top of the supports
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cutout_width=25; // width of the cutouts in the support structure, for wires etc
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cutout_depth=5; // depth of the cutouts in the support structure
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pcbs_wide=2; // how many trellis PCBs are in the grid, width-wise
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pcbs_long=4; // how many trellis PCBs are in the grid, length-wise
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hole_size = 4; // size of the holes in which the top plate pegs sit
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hole_depth = 15; // depth of the holes in which the top plate pegs sit
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// Button size (in mm)
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button_size = 10;
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// Spacing between buttons (in mm)
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spacing = 5;
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// Tolerance for button holes (how much larger they are than a button)
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button_tolerance = 1;
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// Tolerance for pegs (how much smaller they are than the holes)
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peg_tolerance = 0.4;
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// PCB tolerance (tolerance for the size of the PCB)
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pcb_tolerance = 2;
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// outer spacing - spacing between the edge of the silicon part and the buttons
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outer_spacing = 2.5;
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plate_thickness = 3;
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// module for the entire plate
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module plate() {
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difference() {
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translate([-(wall_width+pcb_tolerance),-(wall_width+pcb_tolerance)]) {
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cube(
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[pcb_size*pcbs_long+(wall_width+pcb_tolerance)*2,
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pcb_size*pcbs_wide+(wall_width+pcb_tolerance)*2,
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plate_thickness]);
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}
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for(x=[0:pcbs_long-1]){
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for(y=[0:pcbs_wide-1]) {
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translate([x*pcb_size,y*pcb_size,0])
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plate4x4(plate_thickness);
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}
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}
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}
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// mounting holes for plate
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/* translate(
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[-wall_width/2-pcb_tolerance/2,
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-wall_width/2-pcb_tolerance/2,
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-plate_thickness+peg_tolerance*2]){
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cube([hole_size-peg_tolerance,hole_size-peg_tolerance,hole_depth], center=true);
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}
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translate(
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[wall_width/2+(pcbs_long*pcb_size)+pcb_tolerance/2,
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-wall_width/2-pcb_tolerance/2,
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-plate_thickness+peg_tolerance*2]){
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cube([hole_size-peg_tolerance,hole_size-peg_tolerance,hole_depth], center=true);
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}
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translate(
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[wall_width/2+(pcbs_long*pcb_size)+pcb_tolerance/2,
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wall_width/2+(pcbs_wide*pcb_size)+pcb_tolerance/2,
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-plate_thickness+peg_tolerance*2]){
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cube([hole_size-peg_tolerance,hole_size-peg_tolerance,hole_depth], center=true);
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}
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translate(
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[-wall_width/2-pcb_tolerance/2,
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wall_width/2+(pcbs_wide*pcb_size)+pcb_tolerance/2,
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-plate_thickness+peg_tolerance*2]){
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cube([hole_size-peg_tolerance,hole_size-peg_tolerance,hole_depth], center=true);
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} */
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}
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// module for the holes in a 4x4 unit of the top plate.
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// TODO rewrite this using center()?
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module plate4x4(thickness) {
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for(x=[0:3]) {
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for(y=[0:3]) {
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translate(
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[outer_spacing-(button_tolerance/2)+((button_size+spacing)*x),
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outer_spacing-(button_tolerance/2)+((button_size+spacing)*y),
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-0.5])
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cube([button_size+button_tolerance,button_size+button_tolerance,thickness+1]);
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}
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}
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}
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plate(); |