101 lines
2.7 KiB
OpenSCAD
101 lines
2.7 KiB
OpenSCAD
/* Project box
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A parametric box for electronics projects using perforated circuit boards. The
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board is held above the bottom of the box by four corner supports, and snaps
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into place to hold it snugly while allowing easy removal.
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*/
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$fn=50;
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board_x = 50;
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board_y = 70;
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board_thickness = 1; // [1:10]
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clearance_above = 20; // [5:50]
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clearance_below = 10; // [5:50]
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fit_tolerance = 0.5;
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corner_radius=3; // [1:10]
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support_radius=5; // [1:10]
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wall_width=3; // [3:10]
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module _rounded_box(h, w, d, r) {
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hull() {
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translate([0 + r,0 + r,0])
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cylinder(h=h,r=r);
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translate([w - r,0 + r,0])
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cylinder(h=h, r=r);
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translate([w - r,d - r,0])
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cylinder(h=h, r=r);
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translate([0 + r,d - r,0])
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cylinder(h=h, r=r);
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}
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}
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module corner_post(h, r) {
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intersection() {
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translate([-0.001,-0.001,-0.001])
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cube([r*1.1, r*1.1, h*1.2]);
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cylinder(h=h, r=r);
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}
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}
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module project_box(x, y,
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above=20,
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below=10,
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board_thickness=1,
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fit_tolerance=0.5,
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corner_radius=3,
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support_radius=5,
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wall_width=3) {
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height=board_thickness + above + below + (fit_tolerance * 2);
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width=board_x + (fit_tolerance * 2);
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depth=board_y + (fit_tolerance * 2);
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// container
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difference() {
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_rounded_box(h=height + (wall_width * 2),
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w=width + (wall_width * 2),
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d=depth + (wall_width * 2),
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r=corner_radius);
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translate([wall_width,wall_width,wall_width])
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cube([width, depth, height + (wall_width * 2)]);
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}
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// supports
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translate([wall_width,wall_width,wall_width]) {
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translate([0,0,0])
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corner_post(h=below, r=support_radius);
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translate([width,0,0])
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rotate([0,0,90])
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corner_post(h=below, r=support_radius);
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translate([0,depth,0])
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rotate([0,0,270])
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corner_post(h=below, r=support_radius);
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translate([width,depth,0])
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rotate([0,0,180])
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corner_post(h=below, r=support_radius);
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}
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// locking nubs
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translate([wall_width,wall_width,wall_width]) {
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nub_size = 1;
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nub_width = board_y / 4;
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nub_height = below + board_thickness + (nub_size/2) + (fit_tolerance*2);
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translate([0,board_y / 2 - nub_width / 2,nub_height])
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rotate([270,0,0])
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cylinder(h=nub_width, r=1);
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translate([width,board_y / 2 - nub_width / 2,nub_height])
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rotate([270,0,0])
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cylinder(h=nub_width, r=1);
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}
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}
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project_box(board_x, board_y,
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above=clearance_above,
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below=clearance_below,
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board_thickness=board_thickness,
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fit_tolerance=fit_tolerance,
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corner_radius=corner_radius,
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support_radius=support_radius,
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wall_width=wall_width);
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