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Added TO220_size() and TO220_lead_pos(i, l).

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Chris
2023-03-10 15:46:57 +00:00
parent 27f9b242f2
commit 01e9aae698
2 changed files with 27 additions and 22 deletions
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2
readme.md
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@@ -806,6 +806,8 @@ Various electronic components used in hot ends and heated beds.
### Functions
| Function | Description |
|:--- |:--- |
| `TO220_lead_pos(i, l)` | Position of ith lead end when length = l |
| `TO220_size()` | Size of a TO220 |
| `TO220_thickness()` | Thickness of the tab of a TO220 |
| `TO247_size()` | Body dimensions of a T247, hole offset, lead height and lead wide length |
| `fack2spm_bezel_size()` | FACK2SPM Bezel dimensions |

47
vitamins/component.scad
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@@ -207,52 +207,55 @@ module al_clad_resistor_assembly(type, value, sleeved = true) { //* Draw alumini
children();
}
TO220_hole_y = 2.9; // Distance to hole from top of tab
function TO220_size() = [10.2, 15, 4.4]; //! Size of a TO220
function TO220_thickness() = 1.5; //! Thickness of the tab of a TO220
function TO220_lead_pos(i, l) = //! Position of ith lead end when length = l
[i * inch(0.1), -TO220_size().y + TO220_hole_y - l, 1.9];
module TO220(description, leads = 3, lead_length = 16) { //! Draw a TO220 package, use `description` to describe what it is
width = 10.2;
s = TO220_size();
inset = 1.5;
hole = 3.3;
length = 15;
height = 4.4;
lead_height = 1.9;
lead_t = 0.4;
lead_w = 0.7;
lead_w2 = 1.4;
lead_l = 4.2;
body = 8;
hole_y = 2.9;
vitamin(str("TO220(\"", description, "\"", arg(leads, 3, "leads"), "): ", description));
translate([0, -length + hole_y]) {
color("silver") {
translate([0, -s.y + TO220_hole_y]) {
color("silver")
linear_extrude(TO220_thickness())
difference() {
translate([-width / 2, inset])
square([width, length - inset]);
translate([-s.x / 2, inset])
square([s.x, s.y - inset]);
translate([0, length - hole_y])
translate([0, s.y - TO220_hole_y])
circle(d = hole);
for(side = [-1, 1])
translate([side * width / 2, 0])
translate([side * s.x / 2, 0])
square([inset * 2, body * 2], center = true);
}
for(i = [-1 : 1])
if(i || leads == 3) {
translate([inch(0.1) * i, -lead_length / 2, lead_height])
cube([lead_w, lead_length, lead_t], center = true);
translate([inch(0.1) * i, -lead_l / 2, lead_height])
cube([lead_w2, lead_l, lead_t], center = true);
}
}
color("dimgrey")
translate([-width / 2, 0, eps])
cube([width, body, height]);
translate([-s.x / 2, 0, eps])
cube([s.x, body, s.z]);
}
color(silver)
for(i = [-1 : 1])
if(i || leads == 3) {
translate(TO220_lead_pos(i, lead_length / 2))
cube([lead_w, lead_length, lead_t], center = true);
translate(TO220_lead_pos(i, lead_l / 2))
cube([lead_w2, lead_l, lead_t], center = true);
}
translate_z(TO220_thickness())
children();
}