74 lines
2.6 KiB
OpenSCAD
74 lines
2.6 KiB
OpenSCAD
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// The basic dimensions of an Expansion Card
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base = [30.0, 32.0, 6.8];
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// The extension for the mini PCIe slot
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base_ext = [59, 33, 13];
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// The default wall thickness
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side_wall = 1.5;
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// Size and location of the typical PCB
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pcb_gap = 0.5;
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pcb = [26.0, 30.0, 0.8];
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pcb_h = 3.05;
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// USB-C plug dimensions
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usb_c_r = 1.315;
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usb_c_w = 5.86+usb_c_r*2;
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usb_c_h = 2.2;
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rail_h = 4.25; // to top of rail
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// Boss locations matching the other Framework Expansion Cards
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boss_y = 10.5;
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boss_x = 3.7;
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// The cutout for the USB-C plug
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module usb_c_cutout(open_top) {
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// The plug is "pushed in" by an extra 0.6 to account for 3d printing tolerances
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translate([-usb_c_w/2+usb_c_r, 7-10+0.6, usb_c_r]) rotate([-90, 0, 0]) union() {
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translate([0, usb_c_r, 0]) cylinder(r = usb_c_r, h = 10, $fn = 64);
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translate([usb_c_w-usb_c_r*2, usb_c_r, 0]) cylinder(r = usb_c_r, h = 10, $fn = 64);
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cube([usb_c_w-usb_c_r*2, usb_c_r*2, 10]);
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// Cutout for the pin side of the shell that expands out
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translate([0, usb_c_r, 0]) cylinder(r2 = usb_c_r, r1 = 3.84/2, h = 10-7.7, $fn = 64);
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translate([usb_c_w-usb_c_r*2, usb_c_r, 0]) cylinder(r2 = usb_c_r, r1 = 3.84/2, h = 10-7.7, $fn = 64);
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translate([usb_c_w/2-usb_c_r, usb_c_r, 0]) scale([1.8, 1, 1]) rotate([0, 0, 45]) cylinder(r2 = usb_c_r*sqrt(2), r1 = 3.84/2*sqrt(2), h = 10-7.7, $fn = 4);
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// If the card drops in from the top rather than sliding in from the front,
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// cut out a slot for the USB-C plug to drop into.
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if (open_top) {
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translate([-usb_c_r, -10+usb_c_r, 0]) cube([usb_c_w, 10, 10]);
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}
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}
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}
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// Incomplete implementation of a lid to use with this shell
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module expansion_card_lid() {
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gap = 0.25;
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difference() {
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union() {
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translate([side_wall+gap, side_wall+gap, base[2]-side_wall]) cube([base[0]-side_wall*2-gap*2, base[1]-side_wall*2-gap*2, side_wall]);
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difference() {
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translate([base[0]/2-usb_c_w/2+gap, base[1]-side_wall-gap, usb_c_r+usb_c_h]) cube([usb_c_w-gap*2, side_wall+gap, base[2]-(usb_c_r+usb_c_h)]);
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translate([base[0]/2, base[1], usb_c_r+usb_c_h]) usb_c_cutout(false);
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}
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}
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// engrave LES logo into lid
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translate([3, 20, 6]) linear_extrude(height=1.6, center=true) {
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offset(0.01) import("LES.svg"); // the offset fixes a weird error about the svg's mesh being incomplete
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}
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}
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}
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expansion_card_lid();
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translate([3, 20, 6]) linear_extrude(height=1, center=true) {
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offset(0.01) import("LES.svg"); // the offset fixes a weird error about the svg's mesh being incomplete
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}
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