102 lines
2.2 KiB
Python
102 lines
2.2 KiB
Python
import cadquery as cq
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from utils import punch_hole, extrude_shape
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# Measurements for my USB hub, YMMV
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# The hole is for a USB-A plug, y is measured in the hub
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# (from the bottom face to middle of the hole)
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# Consumers should set proper offsets for the hole
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item_w = 17
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item_h = 93
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holes = [
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# USB-A port
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{
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"x": -item_w / 2,
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"y": 4,
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"shape": cq.Sketch().trapezoid(13, 5, 90, mode="a").vertices().fillet(1),
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},
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]
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elements = [
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# Thing to grab the hub
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{
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"x": item_w / 2,
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"y": 5,
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"shape": (
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cq.Sketch().trapezoid(22, 10, 90, mode="a").trapezoid(17, 10, 90, mode="s")
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),
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"height": 8,
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},
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{
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"x": item_w / 2 + 5,
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"y": item_h - 3,
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"shape": (cq.Sketch().circle(2.5, mode="a")),
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"height": 8,
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},
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{
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"x": item_w / 2 - 5,
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"y": item_h - 3,
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"shape": (cq.Sketch().circle(2.5, mode="a")),
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"height": 8,
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},
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# Outline
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{
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"x": item_w / 2,
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"y": item_h / 2,
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"shape": (
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cq.Sketch()
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.trapezoid(item_w, item_h, 90, mode="a")
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.trapezoid(item_w - 2, item_h - 2, 90, mode="s")
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.vertices()
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.fillet(3)
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),
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"height": 0.2,
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},
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]
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def add(
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*,
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model,
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width,
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height,
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thickness,
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offset_x,
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offset_y,
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bottom_face,
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back_face,
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shell_t
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):
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# USB Hub extrusions
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if bottom_face:
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for element in elements:
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model = extrude_shape(
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model=model,
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face=bottom_face,
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w=width,
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h=height,
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x_offset=offset_x,
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y_offset=shell_t + offset_y,
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element=element,
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height=-(element["height"] + shell_t),
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)
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# Holes
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if back_face:
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for hole in holes:
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model = punch_hole(
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model=model,
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face=back_face,
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w=width,
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h=thickness,
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x_offset=width - offset_x,
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y_offset=shell_t,
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hole=hole,
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depth=shell_t,
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)
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return model
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