Created
May 10, 2015 18:45
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OpenSCAD 3D printed part for connecting stacked Raspberry Pi systems (rear)
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| // | |
| // Global properties (mm) | |
| // | |
| part_height = 3; | |
| ring_outer_diameter = 13; | |
| ring_inner_diameter = 7; | |
| connector_bridge_length = 89; | |
| connector_bridge_width = 7; | |
| connector_distance = 60; | |
| brace_offset_degrees = 85; | |
| object_resolution = 100; | |
| // | |
| // Reusable modules | |
| // | |
| module ring (h, od, id) { | |
| difference() { | |
| cylinder(h = h, r = (od/2), $fn = object_resolution); | |
| cylinder(h = h, r = (id/2), $fn = object_resolution); | |
| } | |
| } | |
| module connector (bl, bw, h, od, id) { | |
| cube(size = [(bl-id),h,bw], center = true, $fn = object_resolution); | |
| rotate([-90,0,0]) { | |
| translate([(bl/2),0,-1*(h/2)]) { | |
| ring(h = h, od = od, id = id); | |
| } | |
| translate([-1*(bl/2),0,-1*(h/2)]) { | |
| ring(h = h, od = od, id = id); | |
| } | |
| } | |
| } | |
| module brace (bl, d, h, w, id, o = 90, r = 1) { | |
| fl = (sqrt(pow(d/2,2) + pow(bl/2,2)) * 2) - id; | |
| a = asin(bl/fl); | |
| rotate([0,(a+o)*r,0]) { | |
| cube(size = [fl,h,w], center = true, $fn = object_resolution); | |
| } | |
| } | |
| // | |
| // Design definition | |
| // | |
| translate([0,0,(connector_distance/2)]) { | |
| connector( | |
| bl = connector_bridge_length, | |
| bw = connector_bridge_width, | |
| h = part_height, | |
| od = ring_outer_diameter, | |
| id = ring_inner_diameter | |
| ); | |
| } | |
| translate([0,0,-1*(connector_distance/2)]) { | |
| connector( | |
| bl = connector_bridge_length, | |
| bw = connector_bridge_width, | |
| h = part_height, | |
| od = ring_outer_diameter, | |
| id = ring_inner_diameter | |
| ); | |
| } | |
| brace( | |
| bl = connector_bridge_length, | |
| d = connector_distance, | |
| h = part_height, | |
| w = connector_bridge_width, | |
| id = ring_inner_diameter, | |
| o = brace_offset_degrees | |
| ); | |
| brace( | |
| bl = connector_bridge_length, | |
| d = connector_distance, | |
| h = part_height, | |
| w = connector_bridge_width, | |
| id = ring_inner_diameter, | |
| o = brace_offset_degrees, | |
| r = -1 | |
| ); |
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