225 lines
9.2 KiB
OpenSCAD
225 lines
9.2 KiB
OpenSCAD
// supermicro SC808 (and others) I/O-Shields to be able to utilize mITX-boards with extenation-cords that allow for Surface-Mounting
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// by zeus - 2022-09-11 - CC-BY-NC-SA-4.0 - https://git.kostianix.de/zeus/3d-stuff/openscad/
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// #####################################
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// VARS:
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// #####################################
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mt=2;
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q=0.01; //used as variable to remove manifold-glitches in preview. can be set to "0" in final version
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$fn=100;
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// shield:
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shield_w=178; // let's hope that fits onto my delta...
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shield_h=41;
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shield_d=10; //around 11.5 in the original, but that is not needed
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shield_tab_emboss_d=1; // that lowered lip, that the central and outer tabs mounts onto, 1mm (or one sheet-thickness) lower than the rest
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shield_tab_emboss_l=22; // length of the above described cutouts
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shield_tab_emboss_l2=shield_tab_emboss_l/2; // length of the side cutouts
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shield_holes=1; // draw holes if >0. the perimeter-holes are manually placed, and should be disabled, if many vars get altered! (and then drilled manually)
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shield_hole_d1=2.75;
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shield_hole_d2=shield_hole_d1+0.5; // slightly conical holes for better inserting
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// for separating the shield into two halves
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shield_center_slot=1; // draw slot if >0
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shield_center_slot_w=0.5;
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shield_hole_center_dia=4;
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shield_hole_center_dist=shield_h/2;
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// model "gril":
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m_grill_w=3;
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m_grill_h=shield_h*0.75-m_grill_w-2*mt;
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m_grill_skew=25;
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m_grill_offset=5;
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m_grill_spacing=m_grill_w;
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//port ethernet:
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p_eth_hole_dist=27.5;
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p_eth_hole_dia=3.5;
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p_eth_slack=0.5;
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p_eth_base_x=22+p_eth_slack;
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p_eth_base_y=21.75+p_eth_slack;
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p_eth_cut_x=16+p_eth_slack;
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p_eth_cut_y=13.15+p_eth_slack;
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p_eth_cut_z=mt;
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p_eth_cut_x_offset=0;
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p_eth_cut_y_offset=1.5;
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//port usb:
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p_usb_hole_dist=30;
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p_usb_hole_dia=3.5;
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p_usb_slack=0.5;
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p_usb_base_x=23+p_eth_slack;
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p_usb_base_y=16.5+p_eth_slack;
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p_usb_cut_x=16+p_eth_slack;
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p_usb_cut_y=15+p_eth_slack;
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p_usb_cut_z=mt;
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p_usb_cut_x_offset=0;
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p_usb_cut_y_offset=0;
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//port vga:
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p_vga_hole_dist=25;
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p_vga_hole_dia=3.5;
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p_vga_slack=0.5;
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p_vga_base_x=34+p_eth_slack;
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p_vga_base_y=15.25+p_eth_slack;
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p_vga_cut_x=16+p_eth_slack;
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p_vga_cut_y=8+p_eth_slack;
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p_vga_cut_z=mt;
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p_vga_cut_x_offset=0;
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p_vga_cut_y_offset=0;
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//port slot:
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p_slot_hole_dist=27.5;
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p_slot_hole_dia=7.5;
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// #####################################
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// MODEL:
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// mounting holes around the shield perimeter
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module port_ethernet(){
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cube([p_eth_base_x,p_eth_base_y,mt],center=true);
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translate([p_eth_cut_x_offset,p_eth_cut_y_offset,p_eth_cut_z+mt/2])cube([p_eth_cut_x,p_eth_cut_y,p_eth_cut_z+mt],center=true);
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hull(){
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translate([-p_eth_hole_dist/2,0,0])cylinder(d=p_eth_hole_dia+mt,h=mt,center=true);
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translate([p_eth_hole_dist/2,0,0])cylinder(d=p_eth_hole_dia+mt,h=mt,center=true);
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}
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translate([-p_eth_hole_dist/2,0,mt*1.5])cylinder(d=p_eth_hole_dia,h=mt*2,center=true);
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translate([p_eth_hole_dist/2,0,mt*1.5])cylinder(d=p_eth_hole_dia,h=mt*2,center=true);
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}
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module port_usb(){
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cube([p_usb_base_x,p_usb_base_y,mt],center=true);
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translate([p_usb_cut_x_offset,p_usb_cut_y_offset,p_usb_cut_z+mt/2])cube([p_usb_cut_x,p_usb_cut_y,p_usb_cut_z+mt],center=true);
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hull(){
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translate([-p_usb_hole_dist/2,0,0])cylinder(d=p_usb_hole_dia+mt,h=mt,center=true);
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translate([p_usb_hole_dist/2,0,0])cylinder(d=p_usb_hole_dia+mt,h=mt,center=true);
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}
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translate([-p_usb_hole_dist/2,0,mt*1.5])cylinder(d=p_usb_hole_dia,h=mt*2,center=true);
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translate([p_usb_hole_dist/2,0,mt*1.5])cylinder(d=p_usb_hole_dia,h=mt*2,center=true);
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}
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module port_vga(){
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cube([p_vga_base_x,p_vga_base_y,mt],center=true);
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translate([p_vga_cut_x_offset,p_vga_cut_y_offset,p_vga_cut_z+mt/2])cube([p_vga_cut_x,p_vga_cut_y,p_vga_cut_z+mt],center=true);
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hull(){
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translate([-p_vga_hole_dist/2,0,0])cylinder(d=p_vga_hole_dia+mt,h=mt,center=true);
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translate([p_vga_hole_dist/2,0,0])cylinder(d=p_vga_hole_dia+mt,h=mt,center=true);
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}
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translate([-p_vga_hole_dist/2,0,mt*1.5])cylinder(d=p_vga_hole_dia,h=mt*2,center=true);
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translate([p_vga_hole_dist/2,0,mt*1.5])cylinder(d=p_vga_hole_dia,h=mt*2,center=true);
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}
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module port_slot(){
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hull(){
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translate([-p_slot_hole_dist/2,0,mt])cylinder(d=p_slot_hole_dia,h=mt*2,center=true);
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translate([p_slot_hole_dist/2,0,mt])cylinder(d=p_slot_hole_dia,h=mt*2,center=true);
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}
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}
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module shield_hole(x,y,z,rotx,roty){
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translate([x,y,shield_d/2-z])rotate([rotx,roty,0])cylinder(d1=shield_hole_d1,d2=shield_hole_d2,h=mt+q,center=true);
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}
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// basic shield
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module shield(){
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difference(){
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cube([shield_w,shield_h,shield_d],center=true); // basebox
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translate([0,0,mt/2+q])cube([shield_w-2*mt,shield_h-2*mt,shield_d-mt],center=true); // main hollowing
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for(x=[-shield_w/2+shield_tab_emboss_l/2,shield_w/2-shield_tab_emboss_l/2]){
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translate([x,shield_h/2-shield_tab_emboss_d/2,0])cube([shield_tab_emboss_l+q,shield_tab_emboss_d+q,shield_d+q],center=true);// top edge-cutout
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}
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for(x=[-shield_w/2+shield_tab_emboss_d/2,shield_w/2-shield_tab_emboss_d/2]){
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translate([x,shield_h/2-shield_tab_emboss_l2/2,0])cube([shield_tab_emboss_d+q,shield_tab_emboss_l2+q,shield_d+q],center=true);// side edge-cutout
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}
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}
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for(x=[-shield_w/2+shield_tab_emboss_l/2+mt,shield_w/2-shield_tab_emboss_l/2-mt]){
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translate([x,shield_h/2-shield_tab_emboss_d/2-mt,0])cube([shield_tab_emboss_l+mt+q,shield_tab_emboss_d+q,shield_d+q],center=true);// supportblock for top edge-cutout
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for(x=[-shield_w/2+shield_tab_emboss_d/2+shield_tab_emboss_d+mt/2,shield_w/2-shield_tab_emboss_d/2-shield_tab_emboss_d-mt/2]){
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translate([x,shield_h/2-shield_tab_emboss_l2/2-mt,0])cube([shield_tab_emboss_d+q,shield_tab_emboss_l2+q,shield_d+q],center=true);// supportblock for side edge-cutout
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}
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}
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cube([mt*4,shield_h,shield_d],center=true); // central support-block
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}
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// first iteration: optional slotting
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module shield_1(){
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if (shield_center_slot>0) { // generate slot and matching connection-holes in the center
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difference(){
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shield();
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cube([shield_center_slot_w,shield_h+q,shield_d+q],center=true);
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for(y=[-shield_hole_center_dist/2,shield_hole_center_dist/2]){
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translate([0,y,mt/2])rotate([0,90,0])cylinder(d=shield_hole_center_dia,h=mt*4+q,center=true);
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}
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}
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}
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else shield();
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}
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// second iteration: add some holes
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module shield_2(){
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difference(){
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shield_1();
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if (shield_holes>0) {
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// some holes all around, (left, than clockwise, viewed from behind). THESE ARE MANUALLY PLACED!
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// shield_hole(x,y,z,rotx,roty), "z" is the distance from lip-edge to the center of the hole, x is from center
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shield_hole(-shield_w/2+mt/2,-0.5,4,0,-90); //left side
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shield_hole(-shield_w/2+mt/2+4.5,shield_h/2-shield_tab_emboss_d-mt/2-q*0.5,6.25,-90,0); //top side, 1st from left (recessed)
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shield_hole(-shield_w/2+mt/2+29.5,shield_h/2-mt/2,4.4,-90,0); //top side, 2nd from left
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shield_hole(-shield_w/2+mt/2+147,shield_h/2-mt/2,4.4,-90,0); //top side, 3rd from left
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shield_hole(-shield_w/2+mt/2+162,shield_h/2-shield_tab_emboss_d-mt/2-q*0.5,5.5,-90,0); //top side, 4th from left (recessed)
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shield_hole(-shield_w/2+mt/2+171.5,shield_h/2-shield_tab_emboss_d-mt/2-q*0.5,6.25,-90,0); //top side, 5th from left (recessed)
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shield_hole(shield_w/2-mt/2,-0.5,4,0,90); //right side
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shield_hole(-shield_w/2+mt/2+172.5,-shield_h/2+mt/2,4.25,90,0); // bottom side, 1st one from right
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shield_hole(-shield_w/2+mt/2+56.25,-shield_h/2+mt/2,4.25,90,0); //bottom side, 2nd one from right
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shield_hole(-shield_w/2+mt/2+4.5,-shield_h/2+mt/2,4.25,90,0); //bottom side, 3rd one from right
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}
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}
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}
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// final interation: with fan-grills
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module shield_grill(){
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difference(){
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shield_2();
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for(a=[0:m_grill_spacing*2:shield_w/2-mt*3-m_grill_offset*3]){
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translate([-shield_w/2+mt*3+m_grill_offset+a,0,-shield_d/2+mt/2+q]){
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hull(){
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for (y=[-m_grill_h/2,m_grill_h/2]){
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rotate([0,0,-m_grill_skew])translate([0,y,0])cylinder(d=m_grill_w,h=2*mt,center=true);
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}
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}
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translate([shield_w/2,0,0])hull(){
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for (y=[-m_grill_h/2,m_grill_h/2]){
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rotate([0,0,-m_grill_skew])translate([0,y,0])cylinder(d=m_grill_w,h=2*mt,center=true);
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}
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}
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}
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}
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}
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}
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// final iteration: with ports (manual placement)
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module shield_ports(){
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difference(){
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shield_2();
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for (x=[-66,-39,-8,8,38.5,47.5,80]){
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translate([x,0,-3*mt-q])rotate([0,0,90])#port_slot();
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}
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//flipped and embossed so that only 1mm of the plate thickness is left, due to the way, d-sub is mounted, and no support is needed for printing
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translate([-78,-1,-mt-(mt-1)])rotate([180,0,-90])#port_vga();
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translate([-52.5,0,-3*mt-q])rotate([0,0,-90])#port_usb();
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translate([-23,-1,-3*mt-q])rotate([0,0,-90])#port_ethernet();
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translate([22.5,-1,-3*mt-q])rotate([0,0,-90])#port_ethernet();
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translate([63.5,-1,-3*mt-q])rotate([0,0,-90])#port_ethernet();
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// slots
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}
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}
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// #####################################
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// DRAWING:
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// shield_2();
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//port_ethernet();
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shield_ports();
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// todo: add text
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