152 lines
3.5 KiB
Python
152 lines
3.5 KiB
Python
import cadquery as cq
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from utils import extrude_shape, punch_hole, hex_vents
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stand_positions = [(3.5, 3.5), (61.5, 3.5), (61.5, 52.5), (3.5, 52.5)]
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stands = (
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cq.Sketch().push(stand_positions).circle(3, mode="a").circle(2.65 / 2, mode="s")
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)
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pillar_height = 7
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width = 85
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height = 56
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# This is a holder for DuPont cables so they connect to this
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# things' pogo pins which are used to power the CPU
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pin_positions = [(3.5, 0), (4 * 2.54 + 3.5, 0)]
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pin_holder_width = 25
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pin_holder_height = 15
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pin_holder = (
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cq.Sketch()
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.polygon(
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[
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(0.5, 0),
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(pin_holder_width, 0),
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(pin_holder_width, pin_holder_height),
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(0, pin_holder_height),
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(0.5, 0),
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],
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mode="a",
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)
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.push(pin_positions)
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.polygon(
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[(0, 0), (2.6, 0), (2.6, pin_holder_height), (0, pin_holder_height), (0, 0)],
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mode="s",
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)
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)
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elements = [
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# Battery holder stands
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{
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"x": 0,
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"y": 0,
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"shape": stands,
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"height": pillar_height,
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},
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{
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"x": 0,
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"y": 0,
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"shape": cq.Sketch().push(stand_positions).circle(5),
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"height": 0,
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},
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# Pogo pin connector channels
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{
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"x": 3.5,
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"y": 43.5,
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"shape": pin_holder,
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"height": 3,
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},
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# Perimeter
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{
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"x": width / 2,
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"y": height / 2,
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"shape": (
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cq.Sketch()
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.trapezoid(width, height, 90, mode="a")
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.trapezoid(width - 2, height - 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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vents = hex_vents(size=3, width=width, height=height)
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# Hole distances are relative to the rightmost pillar
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# seen from the back of the case, that's why they are negative
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# Heights are relative to base of pillars
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# All distances are measured to the CENTER of the hole
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holes = [
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# Power inlet
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{
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"x": -17,
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"y": -1 + pillar_height,
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"shape": cq.Sketch().trapezoid(12, 6.5, 90, mode="a").vertices().fillet(1),
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},
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# Power button
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{
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"x": -70,
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"y": 5.5 + pillar_height,
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"shape": cq.Sketch().trapezoid(7, 7, 90, mode="a").vertices().fillet(1),
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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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if bottom_face:
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# Vents
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for vent in vents:
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model = punch_hole(
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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 + vent["x"],
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y_offset=shell_t + offset_y + vent["y"],
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hole=vent,
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depth=shell_t,
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)
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# Battery holder stands and pogo pin holder
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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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if back_face:
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# Holes
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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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