100 lines
3.9 KiB
Python
100 lines
3.9 KiB
Python
#!/bin/sh
|
|
|
|
import math
|
|
import subprocess
|
|
import tempfile
|
|
|
|
from gerbonara import utils
|
|
from gerbonara.cad.kicad import pcb as kicad_pcb
|
|
from gerbonara.cad.kicad import graphical_primitives as kicad_gr
|
|
from gerbonara.cad.kicad import footprints as kicad_fp
|
|
|
|
outer_dias = [40, 65, 90]
|
|
|
|
nks = [[(1, 150),
|
|
(1, 300),
|
|
(1, 480)],
|
|
[(53, 50),
|
|
(53, 100),
|
|
(53, 160)],
|
|
[(53, 100),
|
|
(53, 200),
|
|
(53, 320)],
|
|
[(53, 150),
|
|
(53, 300),
|
|
(53, 480)],
|
|
[(53, 1),
|
|
(53, 1),
|
|
(53, 1)]]
|
|
|
|
def make_pad(x, y, side, w, h, **kwargs):
|
|
f = kicad_fp.Footprint(name=f'conn_gen_01x{n}', _version=None, generator=None, at=kicad_fp.AtPos(x, y, 0), **kwargs)
|
|
|
|
for i in range(n):
|
|
f.pads.append(kicad_fp.Pad(
|
|
layers=['F.Mask', 'F.Cu'] if side == 'top' else ['B.Mask', 'B.Cu'],
|
|
number=str(i+1),
|
|
type=kicad_fp.Atom.smd,
|
|
shape=kicad_fp.Atom.rect,
|
|
at=kicad_fp.AtPos(0, 0, 0),
|
|
size=kicad_fp.XYCoord(w, h),
|
|
footprint=f))
|
|
|
|
return f
|
|
|
|
for case_num, nk in enumerate(nks, start=1):
|
|
board_out = kicad_pcb.Board.empty_board()
|
|
|
|
for (i, d2), (n, k) in zip(enumerate(outer_dias), nk):
|
|
d1 = d2 - 15
|
|
|
|
with tempfile.NamedTemporaryFile(suffix='.kicad_pcb') as f:
|
|
args = 'python twisted_coil_gen_twolayer.py --circle-segments 331 --trace-width 0.13 --via-drill 0.3 --via-diameter 0.6 --via-offset 0.3'.split() + [
|
|
'--pcb', f.name,
|
|
'--turns', str(n), '--twists', str(k),
|
|
'--inner-diameter', str(d1), '--outer-diameter', str(d2),
|
|
]
|
|
|
|
if k > 100:
|
|
args += ['--stagger-inner-vias', '--stagger-outer-vias', '--via-offset', '0.4']
|
|
|
|
subprocess.run(args, check=True)
|
|
|
|
for obj in kicad_pcb.Board.open(f.name).objects():
|
|
board_out.add(obj)
|
|
|
|
board_out.add(kicad_gr.Text(text=f'case {case_num} n={n} k={k}\\nd={d1:.1f}-{d2:.2f}mm\\nt=0.15mm',
|
|
at=kicad_gr.AtPos(0, (d1+d2)/2/2), layer=kicad_gr.TextLayer('F.SilkS')))
|
|
|
|
# Slots
|
|
if i < len(outer_dias)-1:
|
|
na = 8
|
|
r2 = d2/2
|
|
r = r2 + 2.5
|
|
aw = 2*math.asin(3 / 2 / r)
|
|
for j in range(na):
|
|
start = utils.rotate_point(r, 0, (j+1)*2*math.pi/na - aw/2)
|
|
end = utils.rotate_point(r, 0, j*2*math.pi/na + aw/2)
|
|
arc = kicad_gr.Arc(end=end, center=(0, 0), start=start, stroke=kicad_gr.Stroke(width=1.2), layer='Edge.Cuts')
|
|
board_out.add(arc)
|
|
|
|
# Connecting pads
|
|
board_out.add(make_pad(d2/2+1, 0, 'top', 2, 0.7))
|
|
board_out.add(make_pad(d2/2+1, 0, 'bottom', 2, 0.7))
|
|
board_out.add(kicad_pcb.TrackSegment(start=kicad_pcb.XYCoord(d2/2, 0), end=kicad_pcb.XYCoord(d2/2+1, 0), width=0.15, layer='F.Cu'))
|
|
board_out.add(kicad_pcb.TrackSegment(start=kicad_pcb.XYCoord(d2/2, 0), end=kicad_pcb.XYCoord(d2/2+1, 0), width=0.15, layer='B.Cu'))
|
|
|
|
# Circular board outline
|
|
board_out.add(kicad_gr.Circle(center=kicad_gr.XYCoord(0, 0), end=kicad_gr.XYCoord(d2/2+5, 0), layer='Edge.Cuts'))
|
|
|
|
# Silk crosshairs
|
|
r = d2/2 * math.sin(math.pi/4)
|
|
board_out.add(kicad_gr.Line(start=kicad_gr.XYCoord(-r, -r), end=kicad_gr.XYCoord(r, r), layer='F.SilkS'))
|
|
board_out.add(kicad_gr.Line(start=kicad_gr.XYCoord(r, -r), end=kicad_gr.XYCoord(-r, r), layer='F.SilkS'))
|
|
board_out.add(kicad_gr.Line(start=kicad_gr.XYCoord(-r, -r), end=kicad_gr.XYCoord(r, r), layer='B.SilkS'))
|
|
board_out.add(kicad_gr.Line(start=kicad_gr.XYCoord(r, -r), end=kicad_gr.XYCoord(-r, r), layer='B.SilkS'))
|
|
r = d2/2
|
|
board_out.add(kicad_gr.Line(start=kicad_gr.XYCoord(0, r), end=kicad_gr.XYCoord(0, -r), layer='B.SilkS'))
|
|
board_out.add(kicad_gr.Line(start=kicad_gr.XYCoord(r, 0), end=kicad_gr.XYCoord(-r, 0), layer='B.SilkS'))
|
|
|
|
board_out.write(f'wide_coil_{case_num}.kicad_pcb')
|