Hendrik Langer
6 years ago
2 changed files with 222 additions and 2 deletions
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//Pi Zero parametric box design with camera support |
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//R.J.Tidey 17th May 2016 |
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// General parameters |
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//build 1=base, 2=lid, 3=both |
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build = 3; |
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//camera 0=none, 1=internal, 2=external |
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camera = 0; |
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//GPIO 0=no cut_out, 1=top cut_out, 2 side cut out |
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gpio = 2; |
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wall = 2.0; |
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hdmi_recess = 1; |
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corner = 3.0; |
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tol = 0.3; |
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$fn=20; |
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//Base parameters |
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//inner dimensions |
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base_width = 30; |
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//65 for original pizero with no camera connector |
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//67 for pizero with camera connector |
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//70 to give more radius for bending cable back internally |
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base_length = camera==1 ? 70.0 : 67.0; |
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hole2hole_l = 58; |
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hole2hole_w = 23; |
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hdmi_recess_w = 17.5; |
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hdmi_recess_h = 3.75; |
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support_offset = 3.5; |
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support_height = 1.0; |
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support_radius = 1.4; |
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support_size = 7.0; |
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usbpower_offset = 54.0; |
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usbusb_offset = 41.4; |
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usb_length = 9.25; |
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hdmi_offset = 12.4; |
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hdmi_length = 13.75; |
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cutout_height_offset = 1.0; |
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sd_offset = 16.7; |
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sd_width = 13.0; |
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//Lid parameters |
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//1.5 for no camera shallow |
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//6 for camera |
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lid_height = camera==1 ? 6.0 : 1.5; |
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board_thick = 1.35; |
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connector_thick = 3.2; |
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screw_depth = 8.0; |
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screw_radius = 1.3; |
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gpio_centre_x = 32.5; |
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gpio_centre_y = 3.5; |
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gpio_length = 51.5; |
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gpio_width = 6; |
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gpio_recess_h = 1.2; |
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corner_size = 2.4; |
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//Camera parameters, |
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camera_hole = 10; |
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camera_x = 20.0; |
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camera_screw_centre_offset = 0.0; |
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camera_screw_x = 12.5; |
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camera_screw_y = 21.0; |
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camera_screw_r = 1.5; |
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camera_cable_y = 20.0; |
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camera_cable_h = 1.0; |
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//calculate required base_height |
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base_height = support_height + board_thick + connector_thick + tol; |
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echo("base_height = ",base_height); |
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echo("base_length = ",base_length); |
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echo("lid_height = ",lid_height); |
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module round_cube(start,length,width,height,z_offset,cor) { |
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hull() { |
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translate([start,start,z_offset]) |
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cylinder(height+wall,r=cor); |
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translate([start+length,start,z_offset]) |
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cylinder(height+wall,r=cor); |
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translate([start+length,start+width,z_offset]) |
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cylinder(height+wall,r=cor); |
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translate([start,start+width,z_offset]) |
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cylinder(height+wall,r=cor); |
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} |
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} |
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module screwhole() { |
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cylinder(wall+support_height+tol,r=support_radius); |
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cylinder(wall*0.75,2*support_radius,support_radius); |
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} |
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module corner_support() { |
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difference() { |
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union() { |
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round_cube(corner-2*tol,corner_size,corner_size,lid_height,0,corner); |
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translate([support_offset,support_offset,wall-0.1]) |
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cylinder(lid_height+connector_thick+0.1,4,3); |
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} |
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translate([support_offset,support_offset,wall+lid_height+connector_thick-screw_depth]) |
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cylinder(screw_depth+1,r=screw_radius); |
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} |
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} |
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module cut_outs(height) { |
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translate([tol+hdmi_offset-0.5*hdmi_length,-wall-0.1,height]) |
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cube([hdmi_length, wall+ 1.0,base_height]); |
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translate([tol+usbusb_offset-0.5*usb_length,-wall-0.1,height]) |
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cube([usb_length, wall+ 1.0,base_height]); |
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translate([tol+usbpower_offset-0.5*usb_length,-wall-0.1,height]) |
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cube([usb_length, wall+ 1.0,base_height]); |
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translate([-wall-0.1,tol+sd_offset-0.5*sd_width,height]) |
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cube([wall+ 1.0,sd_width,base_height]); |
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if(hdmi_recess==1) { |
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translate([tol+hdmi_offset-0.5*hdmi_recess_w,-wall-0.1,wall]) |
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cube([hdmi_recess_w, wall+ 0.1,base_height]); |
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} |
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if(camera==2) { |
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translate([base_length - 2* wall,tol+0.5*(base_width-camera_cable_y),height]) |
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cube([4*wall,camera_cable_y,camera_cable_h]); |
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} |
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if(gpio==2) { |
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translate([tol + gpio_centre_x - gpio_length*0.5,tol+base_width-wall,height]) |
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cube([gpio_length,4*wall,base_height]); |
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} |
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} |
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module base_shell() { |
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difference() { |
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round_cube(corner-wall,base_length+2*tol+2*wall-2*corner,base_width+2*tol+2*wall-2*corner,base_height,0,corner); |
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round_cube(corner-tol,base_length+4*tol-2*corner,base_width+4*tol-2*corner,base_height,wall,corner); |
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} |
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translate([-tol,-tol,0]) |
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cube([support_size,support_size,support_height+wall]); |
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translate([hole2hole_l+tol,-tol,0]) |
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cube([support_size,support_size,support_height+wall]); |
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translate([hole2hole_l+tol,hole2hole_w+tol,0]) |
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cube([support_size,support_size+2*tol,support_height+wall]); |
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translate([-tol,hole2hole_w+tol,0]) |
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cube([support_size,support_size+2*tol,support_height+wall]); |
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} |
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module base() { |
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difference() { |
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base_shell(); |
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translate([tol+support_offset,tol+support_offset,-0.1]) screwhole(); |
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translate([tol+support_offset+hole2hole_l,tol+support_offset,-0.1]) screwhole(); |
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translate([tol+support_offset+hole2hole_l,tol+support_offset+hole2hole_w,-0.1]) screwhole(); |
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translate([tol+support_offset,tol+support_offset+hole2hole_w,-0.1]) screwhole(); |
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cut_outs(wall+support_height+board_thick-tol); |
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} |
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} |
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module lid_shell() { |
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difference() { |
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round_cube(corner-wall,base_length+2*tol+2*wall-2*corner,base_width+2*tol+2*wall-2*corner,lid_height,0,corner); |
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round_cube(corner-tol,base_length+4*tol-2*corner,base_width+4*tol-2*corner,lid_height,wall,corner); |
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if(gpio==1) { |
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translate([tol+gpio_centre_x-0.5*gpio_length,tol+gpio_centre_y-0.5*gpio_width,-0.5]) |
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cube([gpio_length,gpio_width,wall+1.0]); |
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} |
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if(camera==1) { |
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translate([tol+camera_x,tol+0.5*(base_width-camera_hole),-0.5]) |
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cube([camera_hole,camera_hole,wall+1.0]); |
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translate([tol+camera_x+0.5*camera_hole+camera_screw_centre_offset,tol+0.5*base_width,-0.5]){ |
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translate([0,-0.5*camera_screw_y,0]) cylinder(wall+1.0,camera_screw_r,camera_screw_r); |
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translate([0,0.5*camera_screw_y,0]) cylinder(wall+1.0,camera_screw_r,camera_screw_r); |
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translate([-camera_screw_x,-0.5*camera_screw_y,0]) cylinder(wall+1.0,camera_screw_r,camera_screw_r); |
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translate([-camera_screw_x,0.5*camera_screw_y,0]) cylinder(wall+1.0,camera_screw_r,camera_screw_r); |
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} |
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} |
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} |
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} |
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module lid() { |
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difference() { |
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union() { |
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lid_shell(); |
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translate([0,0,0]) corner_support(); |
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translate([hole2hole_l,0,0]) corner_support(); |
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translate([hole2hole_l,hole2hole_w,0]) corner_support(); |
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translate([0,hole2hole_w,0]) corner_support(); |
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} |
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if(hdmi_recess==1) { |
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translate([tol+hdmi_offset-0.5*hdmi_recess_w,base_width+tol+0.1,lid_height+wall-hdmi_recess_h]) |
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cube([hdmi_recess_w, 2*wall,hdmi_recess_h+1]); |
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} |
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if(gpio==2) { |
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translate([tol + gpio_centre_x - gpio_length*0.5,-wall,lid_height+wall-gpio_recess_h]) |
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cube([gpio_length,4*wall,gpio_recess_h+1]); |
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} |
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} |
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} |
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if (build == 1 || build == 3) { |
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base(); |
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} |
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if (build == 3) { |
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translate([0,base_width+4*wall,0]) lid(); |
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} |
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if(build == 2){ |
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lid(); |
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} |
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