Problem with comparison.
| /Modules/ARM/Raspberry/RPi3/CAD/src/Raspi3_breakout_frame.scad |
|---|
| 0,0 → 1,74 |
| pedestal_height = 13; // designed for use the MLAB standard 12mm screws. |
| x_size = 87; |
| y_size = 58; |
| mount_hole = 3.5; |
| nut_size = 6.8; |
| nut_size25 = 6.1; |
| MLAB_grid = 10.16; |
| x_holes = floor(x_size / MLAB_grid); |
| y_holes = floor(y_size / MLAB_grid); |
| MLAB_grid_xoffset = (x_size - (x_holes * MLAB_grid))/2; |
| MLAB_grid_yoffset = (y_size - (y_holes * MLAB_grid))/2; |
| difference () { |
| cube([x_size, y_size ,pedestal_height]); // base plastics brick |
| //mount holes for Raspberry Pi model A/B |
| translate ([26.5, 19, 0]) |
| rotate([0,0,90]) |
| cylinder (h = 6, r= nut_size25/2, $fn=6); |
| translate ([26.5, 19, 6.2]) // one solid layer for slicer (the holes will be pierced on demand ) |
| cylinder (h = pedestal_height, r= 3.0/2, $fn=30); |
| translate ([81, 44.5, 0]) |
| rotate([0,0,90]) |
| cylinder (h = 6, r= nut_size25/2, $fn=6); |
| translate ([81, 44.5, 6.2]) // one solid layer for slicer (the holes will be pierced on demand ) |
| cylinder (h = pedestal_height, r= 3.0/2, $fn=30); |
| //////////////////////////////////////// |
| // MLAB grid holes |
| grid_list = [for (j = [MLAB_grid_xoffset : MLAB_grid: 86], i = [MLAB_grid_yoffset :MLAB_grid: 55]) |
| if (!(j>20 && i>10 && j<50 && i<50) && !(j>75 && i>40 && j<90 && i<50) ) // exception for Raspberry mount holes |
| [j, i] ]; |
| for (j = grid_list) { |
| translate (concat(j, [0])) |
| cylinder (h = 3, r= nut_size/2, $fn=6); |
| translate (concat(j, [3.2])) // one solid layer for slicer (the holes will be pierced on demand ) |
| cylinder (h = pedestal_height /3, r= mount_hole/2, $fn=30); |
| translate (concat(j, [6.0])) |
| cylinder (h = 10, r= nut_size/2, $fn=6); |
| } |
| ///////////////////////////////////////// |
| // holes for components at the bottom side of the PCB. |
| difference () { |
| translate ([2, 2 , pedestal_height - 3]) // |
| cube([83, 54, 3]); |
| translate ([26.5, 19, pedestal_height - 5]) // Raspberry screw mount pile |
| cylinder (h = pedestal_height, r= 4, $fn=20); |
| translate ([77, 40.5, pedestal_height - 5]) // Raspberry screw mount brick |
| cube([20,8,5]); |
| } |
| translate ([0, 14 , pedestal_height - 4]) // SD Card |
| cube([20,30.5,5]); |
| //// lightening central holes |
| translate ([8, 8, 0]) |
| cube([14.5,y_size - 16,pedestal_height ]); |
| translate ([30.5,8, 0]) |
| cube([47, y_size - 16,pedestal_height ]); |
| } |