Raspberry Pi Model 3 Enclosure
OpenSCAD code
/****************************************************************************
Raspberry Pi Model 3 Enclosure
bottom with camera cutout
HiveTool.net
*****************************************************************************/
width=64;
length=94;
height=23;
wall_thickness = 2;
radius=wall_thickness/2;
difference()
{
union()
{
rounded_box(width, length, height, wall_thickness); // create the rounded box
// add some standoff s for mounting
translate([8.5,10.25,wall_thickness]) standoff(7,6,2.3);
//translate([29,9.5,wall_thickness]) standoff(4,6,2.2); //Pi Zero
translate([57.5,10.25,wall_thickness]) standoff(7,6,2.3);
translate([8.5,68.75,wall_thickness]) standoff(7,6,2.3);
//translate([29,67.5,wall_thickness]) standoff(4,6,2.2); //Pi Zero
translate([57.5,68.75,wall_thickness]) standoff(7,6,2.3);
// add some fillets for strength and printability
translate([2,9.25,1]) cube([4,2,8]);
translate([59.5,9.25,1]) cube([3.5,2,8]);
translate([2,67.75,1]) cube([5,2,8]);
translate([59.5,67.75,1]) cube([3.5,2,8]);
// Standoffs for Camera
translate([(width-21-14.3), (length/2 + 14.3),wall_thickness]) standoff(2,6,2.3);
translate([(width-21-14.3), (length/2 - 14.3),wall_thickness]) standoff(2,6,2.3);
translate([(width-21+14.3), (length/2 - 14.3),wall_thickness]) standoff(2,6,2.3);
translate([(width-21+14.3), (length/2 +14.3),wall_thickness]) standoff(2,6,2.3);
// add alignment pins
translate ([wall_thickness,wall_thickness,height]) alignment_pin();
translate ([wall_thickness,length - wall_thickness,height]) rotate ([0,0,-90]) alignment_pin();
translate ([width - wall_thickness,length - wall_thickness,height]) rotate ([0,0,180]) alignment_pin();
translate ([width - wall_thickness,wall_thickness,height]) rotate ([0,0,90]) alignment_pin();
translate ([wall_thickness+.4,wall_thickness+.4,height]) sphere(1.9, center=true, $fn=36);
translate ([wall_thickness+.4,length - wall_thickness-.4,height]) sphere(1.9, center=true, $fn=36);
translate ([width - wall_thickness-.4,length - wall_thickness-.4,height]) sphere(1.9, center=true, $fn=36);
translate ([width - wall_thickness-.4,wall_thickness+.4,height]) sphere(1.9, center=true, $fn=36);
}
translate ([wall_thickness,length-wall_thickness-1,8]) cube([width-2*wall_thickness,2,4]);
translate([42.5,91,10]) cube([16.8,4,16.5]); // Ethernet
translate([6,88,11]) cube(40,4,15.5); // USBs
// Camera mount
translate([(width-21), (length/2), .5])
difference() {
cylinder(h=10, r=15, $fn=50);
translate([0, 0, -5]) cylinder(h=10, r=14, $fn=50);
}
// holes for camera mount
translate([(width-21-14.3), (length/2 + 14.3), .5]) cylinder(h=10, r=1.3, $fn=50);
translate([(width-21-14.3), (length/2 - 14.3), .5]) cylinder(h=10, r=1.3, $fn=50);
translate([(width-21+14.3), (length/2 - 14.3), .5]) cylinder(h=10, r=1.3, $fn=50);
translate([(width-21+14.3), (length/2 +14.3), .5]) cylinder(h=10, r=1.3, $fn=50);
translate([63,17.5,11.8]) rotate([90,0,90]) round_cutout2 (5,5,0,0,0) ; // micro USB
translate ([15,length-3,height-7]) cube([28,4,8]); // shorten the spacers between USB/Ethernet cutouts
translate([63,31,17.8]) hdmi_cutout(); // hdmi
translate([61,60.5,13.5]) rotate([0,90,0]) cylinder(h=4, r=3.2, $fn=50); // Audio
translate([width/2 - 1,3,height-5.5]) latch(); // latch
translate([1,length-14,height-5.5]) rotate([0,0,90]) latch(); // latch
translate([width-1,length-14,height-5.5]) rotate([0,0,-90]) latch(); // latch
}
/* *****************************************************
Create a solid cube with 8 rounded edges
but not on the top where the cover will go.
*******************************************************/
module rounded_cube(width, length, height, wall_thickness){
hull() // wrap a hull around 4 cylinders with rounded bottoms
{
radius=wall_thickness/2;
// place 4 spheres in the corners, with the given radius offset vertically by the radius
translate([(wall_thickness/2), (wall_thickness/2), radius]) sphere(r=radius, $fn=50);
translate([(wall_thickness/2), length-(wall_thickness/2),radius]) sphere(r=radius, $fn=50);
translate([width-(wall_thickness/2), length-(wall_thickness/2), radius]) sphere(r=radius, $fn=50);
translate([width-(wall_thickness/2), (wall_thickness/2), radius]) sphere(r=radius, $fn=50);
// place 4 cylinders in the corners, with the given radius,
// offset vertically by the radius of the spheres
translate([(wall_thickness/2), (wall_thickness/2), radius])
cylinder(h=height-radius, r=radius, $fn=50);
translate([(wall_thickness/2), (length-wall_thickness/2), radius])
cylinder(h=height-radius, r=radius, $fn=50);
translate([(width-wall_thickness/2), (length-wall_thickness/2), radius])
cylinder(h=height-radius, r=radius, $fn=50);
translate([(width-wall_thickness/2), (wall_thickness/2), radius])
cylinder(h=height-radius, r=radius, $fn=50);
}
}
/**************************************************************
* Create a hollow box with rounded edges inside and out
* but not on the top where the cover will go
* by subtracting a rounded cubes that is 2x the wall thickness smaller
* and shifted by the wall thicknes from the first rounded cube.
***************************************************************/
module rounded_box(width, length, height, wall_thickness){
difference() // subtract two rounded cubes
{
rounded_cube(width, length, height, wall_thickness);
translate([ wall_thickness, wall_thickness, wall_thickness])
rounded_cube(width-(2*wall_thickness), length-(2*wall_thickness), height, wall_thickness);
}
}
module standoff(height,diameter,hole){
difference()
{
cylinder(h = height, r = diameter/2, $fn=6);
cylinder(h = height+1, r = hole/2, $fn=6);
}
}
module hdmi_cutout () {
union()
{
rotate([0,-90,0]) linear_extrude(height = 4, center=true) polygon(points=[[0,0],[0,5],[-7,5],[-7,2],[-5,0]]);
rotate([0,-90,0]) linear_extrude(height = 4, center=true) polygon(points=[[0,6],[0,10],[-7,10],[-7,6]]);
rotate([0,-90,0]) linear_extrude(height = 4, center=true)polygon(points=[[0,11],[0,16],[-5,16],[-7,14],[-7,11]]);
}
}
module round_cutout2 (height,width,x,y,z) {
difference()
{
linear_extrude(height = 4, center=true)
hull()
{
translate([x-width/2,0,0])
circle(height/2, center=true, $fn=100);
translate([x+width/2,0,0])
circle(height/2, center=true, $fn=100);
}
}
}
module square_cutout (height,width,x,y,z) {
difference()
{
translate([x,y,z])
rotate([90,0,0])
linear_extrude(height = 4, center=true)
hull()
{
cube(width,wall_thickness,height);
}
}
}
module alignment_pin() {
rotate([0,180,-90]) { union() { intersection(){cube(4); sphere(3, $fn=36);} } }
}
module latch(){
translate([-3,-1,0]) rotate([0,90,0]) cylinder(h=6, r=1.2, $fn=36);
}
