/Modules/ARM/RapsberryPi/CAD/RaspiAB_coaster_frame.scad
0,0 → 1,78
 
pedestal_height = 13; // designed for use the MLAB standard 12mm screws.
mount_hole = 3.5;
clear = 0.175;
nut_size = 6.6;
 
MLAB_grid_xoffset = 7.36;
MLAB_grid_yoffset = 5.61;
MLAB_grid = 10.16;
 
ODROID_holes_offset = 5.25;
ODROID_holes_xdistance = 86;
ODROID_holes_ydistance = 82;
 
difference () {
cube([85,56,pedestal_height]); // base plastics brick
 
//mount holes for Raspberry Pi model A/B
 
translate ([ODROID_holes_offset, ODROID_holes_offset,0])
cylinder (h = 6, r= (nut_size+clear)/2, $fn=6);
translate ([ODROID_holes_offset, ODROID_holes_offset, 6.2]) // one solid layer for slicer (the holes will be pierced on demand )
cylinder (h = pedestal_height, r= mount_hole/2, $fn=10);
 
translate ([ODROID_holes_offset + ODROID_holes_xdistance, ODROID_holes_offset, 0])
cylinder (h = 6, r= (nut_size+clear)/2, $fn=6);
translate ([ODROID_holes_offset + ODROID_holes_xdistance, ODROID_holes_offset, 6.2]) // one solid layer for slicer (the holes will be pierced on demand )
cylinder (h = pedestal_height, r= mount_hole/2, $fn=10);
 
 
/////////////////////////////////////////
// holes for components at the bottom side of the PCB.
 
translate ([15.5, 84 , pedestal_height - 3]) // IO connector
cube([64, 6, 5]);
translate ([3, 9, pedestal_height - 3.5]) // USB connector
cube([18,33,5]);
 
 
translate ([9, 2.1 , pedestal_height - 3.5]) // HOLE for ODROD's USB and Ethernet connectors
cube([73,27,5]);
 
translate ([66, 0 , pedestal_height - 3.5]) // HOLE for ODROD's Passive components and power wires to MLAB UNIPOWER module.
cube([20,79,5]);
 
translate ([0, 54 , pedestal_height - 3]) // Jack connectors
cube([30,28,5]);
 
 
translate ([22, 43 , pedestal_height - 3.5]) // eMMc Card
cube([27,18,5]);
 
////////////////////////////////////////
 
// MLAB grid holes
grid_list = [for (j = [MLAB_grid_xoffset : MLAB_grid: 90], i = [MLAB_grid_yoffset :MLAB_grid: 95]) if (!(j>80 && i>80) && !(j<10 && i<10) && !(j<10 && i>80) && !(j>80 && i<10) ) [j, i] ];
for (j = grid_list) {
translate (concat(j, [0]))
cylinder (h = 3, r= (nut_size+clear)/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=10);
translate (concat(j, [6.0]))
cylinder (h = 10, r= nut_size/2, $fn=6);
}
//// lightening central holes
translate ([12.5,10, 0])
cube([71,22,pedestal_height ]);
translate ([12.5,42, 0])
cube([71,40,pedestal_height ]);
 
}