76 lines
2.3 KiB
OpenSCAD
76 lines
2.3 KiB
OpenSCAD
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// unit: mm
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// cannot be used standalone
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// create a new .scad file, defined the following variables and include this file:
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/*
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pcb_width=85;
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pcb_length=36;
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pcb_hole_left=2.5;
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pcb_hole_top=2.5;
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plate_pcb_left=6;
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plate_pcb_top=6;
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plate_height=3;
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standoff_height=30;
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standoff_hole=2.5;
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standoff_wall=1.5;
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mounting_hole_left=25;
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mounting_hole_top=10;
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mounting_hole_dia=3;
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mounting_hole_depth=1.5;
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mounting_hole_angle=45;
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*/
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epsilon=.1;
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standoff_radius=standoff_hole/2+standoff_wall;
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standoff_hole_radius=standoff_hole/2;
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plate_width=pcb_width+2*plate_pcb_left;
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plate_length=pcb_length+2*plate_pcb_top;
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standoff_xpos=pcb_width/2-pcb_hole_left;
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standoff_ypos=pcb_length/2-pcb_hole_top;
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mounting_hole_xpos=plate_width/2-mounting_hole_left;
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mounting_hole_ypos=plate_length/2-mounting_hole_top;
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mounting_hole_offset=tan(mounting_hole_angle)*mounting_hole_dia/2;
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mounting_hole_aperture=tan(mounting_hole_angle)*(plate_height-mounting_hole_depth+mounting_hole_offset);
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mounting_hole_radius=mounting_hole_dia/2;
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echo(str(
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"standoff_radius: ", standoff_radius, "\n",
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"standoff_hole_radius: ", standoff_hole_radius, "\n",
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"plate_width: ", plate_width, "\n",
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"plate_length: ", plate_length, "\n",
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"standoff_xpos: ", standoff_xpos, "\n",
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"standoff_ypos: ", standoff_ypos, "\n",
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"mounting_hole_xpos: ", mounting_hole_xpos, "\n",
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"mounting_hole_ypos: ", mounting_hole_ypos, "\n",
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"mounting_hole_offset: ", mounting_hole_offset, "\n",
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"mounting_hole_aperture: ", mounting_hole_aperture, "\n",
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"mounting_hole_radius: ", mounting_hole_radius
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));
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union() {
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for (x = [-1, 1], y = [-1, 1]) {
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translate([standoff_xpos*x, standoff_ypos*y, plate_height]) {
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difference() {
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cylinder(standoff_height, standoff_radius, standoff_radius);
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translate([0,0,-epsilon]) {
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cylinder(standoff_height+2*epsilon, standoff_hole_radius, standoff_hole_radius);
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}
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}
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}
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}
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difference() {
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translate([-plate_width/2,-plate_length/2,0]) {
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cube([plate_width,plate_length,plate_height]);
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}
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for (xy = [-1, 1]) {
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translate([mounting_hole_xpos*xy, mounting_hole_ypos*xy, -epsilon]) {
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cylinder(plate_height+epsilon, mounting_hole_radius, mounting_hole_radius);
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}
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translate([mounting_hole_xpos*xy, mounting_hole_ypos*xy, mounting_hole_depth]) {
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cylinder(plate_height-mounting_hole_depth+epsilon, mounting_hole_radius, mounting_hole_aperture);
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}
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}
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}
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}
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