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-rw-r--r--coil_test_board.py194
1 files changed, 76 insertions, 118 deletions
diff --git a/coil_test_board.py b/coil_test_board.py
index 2cd3228..af47ddf 100644
--- a/coil_test_board.py
+++ b/coil_test_board.py
@@ -51,13 +51,13 @@ coil_specs = [
{'n': 10, 's': False, 't': 7, 'c': 0.20, 'w': 1.50, 'd': 0.80, 'v': 0.60},
{'n': 25, 's': False, 't': 13, 'c': 0.15, 'w': 0.50, 'd': 0.30, 'v': 0.60},
- {'n': 25, 's': False, 't': 23, 'c': 0.15, 'w': 0.50, 'd': 0.30, 'v': 0.60},
+ {'n': 25, 's': False, 't': 37, 'c': 0.15, 'w': 0.50, 'd': 0.30, 'v': 0.60},
]
cachedir = Path('/tmp/coil_test_cache')
version_string = 'v1.0'
coil_border = 7 # mm
-cut_gap = 3 # mm
+cut_gap = 8 # mm
tooling_border = 10 # mm
vscore_extra = 10 # mm
mouse_bite_width = 8 # mm
@@ -74,10 +74,10 @@ pad_dia = 2.0 # mm
pad_length = 3.5 # mm
pad_drill = 1.1 # mm
pad_pitch = 2.54 # mm
-vrail_width = 10 # mm
join_trace_w = 0.150 # mm
-v_cuts = False
-mouse_bites = True
+do_v_cuts = False
+do_mouse_bites = False
+do_cut_gaps = False
db = sqlite3.connect('coil_parameters.sqlite3')
db.execute('CREATE TABLE IF NOT EXISTS runs (run_id INTEGER PRIMARY KEY, timestamp TEXT, version TEXT)')
@@ -88,13 +88,13 @@ cur.execute('INSERT INTO runs(timestamp, version) VALUES (datetime("now"), ?)',
run_id = cur.lastrowid
db.commit()
-coil_pitch_v = coil_dia + coil_border*2 + cut_gap
-coil_pitch_h = coil_dia + coil_border*2 + 2*cut_gap + vrail_width
+tile_width = tile_height = coil_dia + 2*coil_border
+coil_pitch_v = tile_width + cut_gap
+coil_pitch_h = tile_height + cut_gap
-total_width = coil_pitch_h*cols + 2*tooling_border - vrail_width
+total_width = coil_pitch_h*cols + 2*tooling_border + cut_gap
total_height = coil_pitch_v*rows + 2*tooling_border + cut_gap
-tile_width = tile_height = coil_dia + 2*coil_border
drawing_text_size = 2.0
print(f'Calculated board size: {total_width:.2f} * {total_height:.2f} mm')
@@ -112,7 +112,7 @@ def do_line(x0, y0, x1, y1, off_x=0, off_y=0):
xy(x1+off_x, y1+off_y),
layer='Edge.Cuts', stroke=pcb.Stroke(width=0.15)))
-if v_cuts:
+if do_v_cuts:
for y in range(rows):
for off_y in [0, tile_height]:
y_pos = y0 + tooling_border + cut_gap + off_y + y*coil_pitch_v
@@ -247,33 +247,45 @@ corner_y0 = y0 + tooling_border + cut_gap/2
corner_x1 = x0 + total_width - tooling_border - cut_gap/2
corner_y1 = y0 + total_height - tooling_border - cut_gap/2
-# Corners
-draw_corner(corner_x0, corner_y0, 'YNNY')
-draw_corner(corner_x0, corner_y1, 'YYNN')
-draw_corner(corner_x1, corner_y0, 'NNYY')
-draw_corner(corner_x1, corner_y1, 'NYYN')
-
-# Top / bottom V rail L junctions
-for x in range(1, cols):
- draw_corner(corner_x0 + x*coil_pitch_h - cut_gap - vrail_width, corner_y0, 'NNYY')
- draw_corner(corner_x0 + x*coil_pitch_h, corner_y0, 'YNNY')
-
- draw_corner(corner_x0 + x*coil_pitch_h - cut_gap - vrail_width, corner_y1, 'NYYN')
- draw_corner(corner_x0 + x*coil_pitch_h, corner_y1, 'YYNN')
-
-# Left / right T junctions
-for y in range(1, rows):
- draw_corner(corner_x0, corner_y0 + y*coil_pitch_v, 'YYNY')
- draw_corner(corner_x1, corner_y0 + y*coil_pitch_v, 'NYYY')
+if do_cut_gaps:
+ # Corners
+ draw_corner(corner_x0, corner_y0, 'YNNY')
+ draw_corner(corner_x0, corner_y1, 'YYNN')
+ draw_corner(corner_x1, corner_y0, 'NNYY')
+ draw_corner(corner_x1, corner_y1, 'NYYN')
-# Middle T junctions
-for y in range(1, rows):
+ # Top / bottom T junctions
for x in range(1, cols):
- draw_corner(corner_x0 + x*coil_pitch_h - cut_gap - vrail_width, corner_y0 + y*coil_pitch_v, 'NYYY')
- draw_corner(corner_x0 + x*coil_pitch_h, corner_y0 + y*coil_pitch_v, 'YYNY')
+ draw_corner(corner_x0 + x*coil_pitch_h, corner_y0, 'YYNY')
+ draw_corner(corner_x0 + x*coil_pitch_h, corner_y1, 'NYYY')
+
+ # Left / right T junctions
+ for y in range(1, rows):
+ draw_corner(corner_x0, corner_y0 + y*coil_pitch_v, 'YYNY')
+ draw_corner(corner_x1, corner_y0 + y*coil_pitch_v, 'NYYY')
+
+ # Middle X junctions
+ for y in range(1, rows):
+ for x in range(1, cols):
+ draw_corner(corner_x0 + x*coil_pitch_h, corner_y0 + y*coil_pitch_v, 'YYYY')
+
+else:
+ for layer in ('F.SilkS', 'B.SilkS'):
+ for x in range(0, cols+1):
+ cx = x0 + tooling_border + cut_gap/2 + x*coil_pitch_h
+ b.add(kc_gr.Line(xy(cx, corner_y0),
+ xy(cx, corner_y1),
+ layer=layer, stroke=pcb.Stroke(width=0.15)))
+
+ for y in range(0, rows+1):
+ cy = y0 + tooling_border + cut_gap/2 + y*coil_pitch_v
+ b.add(kc_gr.Line(xy(corner_x0, cy),
+ xy(corner_x1, cy),
+ layer=layer, stroke=pcb.Stroke(width=0.15)))
+
# Mouse bites
-if mouse_bites:
+if do_mouse_bites:
for x in range(0, cols):
for y in range(0, rows):
tile_x0 = x0 + tooling_border + cut_gap + x*coil_pitch_h
@@ -311,14 +323,24 @@ for layer in ['F.SilkS', 'B.SilkS']:
a = 3
timestamp = datetime.datetime.now().strftime('%Y-%m-%d')
-b.add(kc_gr.Text(text=f'Planar inductor test panel {version_string} {timestamp} © 2023 Jan Götte, FG KOM, TU Darmstadt',
- at=pcb.AtPos(x0 + c + a/3, y0 + c + a/3),
+b.add(kc_gr.Text(text=f'Planar inductor test panel',
+ at=pcb.AtPos(x0 + tooling_border + cut_gap/2, y0 + c + 2*a/3),
layer=kc_gr.TextLayer('F.SilkS'),
effects=pcb.TextEffect(
- font=pcb.FontSpec(size=xy(a, a),
+ font=pcb.FontSpec(face="Inter Semi Bold",
+ size=xy(6*a/3, 6*a/3),
thickness=a/5),
justify=pcb.Justify(h=pcb.Atom.left, v=pcb.Atom.top))))
+b.add(kc_gr.Text(text=f'{version_string} {timestamp} © 2023 Jan Götte, FG KOM, TU Darmstadt',
+ at=pcb.AtPos(x0 + total_width - tooling_border - cut_gap/2, y0 + c + 4*a/3),
+ layer=kc_gr.TextLayer('F.SilkS'),
+ effects=pcb.TextEffect(
+ font=pcb.FontSpec(face="Inter Light",
+ size=xy(a, a),
+ thickness=a/5),
+ justify=pcb.Justify(h=pcb.Atom.right, v=pcb.Atom.top))))
+
for index, ((y, x), spec) in tqdm.tqdm(enumerate(zip(itertools.product(range(rows), range(cols)), coil_specs), start=1)):
pass
with tempfile.NamedTemporaryFile(suffix='.kicad_mod') as f:
@@ -403,20 +425,31 @@ for index, ((y, x), spec) in tqdm.tqdm(enumerate(zip(itertools.product(range(row
db.execute('INSERT INTO results(coil_id, key, value) VALUES (?, "calculated_fill_factor", ?)', (coil_id, val))
db.commit()
- sz = 1.5
+ sz = 2
b.add(kc_gr.Text(text='\\n'.join(t),
at=pcb.AtPos(tile_x0, tile_y0),
layer=kc_gr.TextLayer('B.SilkS'),
effects=pcb.TextEffect(
- font=pcb.FontSpec(size=xy(sz, sz),
+ font=pcb.FontSpec(face='Inter Medium',
+ size=xy(sz, sz),
thickness=sz/5),
justify=pcb.Justify(h=None, v=None, mirror=True))))
- b.add(kc_gr.Text(text=f'{version_string} {timestamp}\\nTile {index}',
+ b.add(kc_gr.Text(text=f'Tile {index}',
at=pcb.AtPos(tile_x0, tile_y0 - tile_height/2 + sz),
layer=kc_gr.TextLayer('B.SilkS'),
effects=pcb.TextEffect(
- font=pcb.FontSpec(size=xy(sz, sz),
+ font=pcb.FontSpec(face='Inter Semi Bold',
+ size=xy(sz, sz),
+ thickness=sz/5),
+ justify=pcb.Justify(h=None, v=pcb.Atom.top, mirror=True))))
+
+ b.add(kc_gr.Text(text=f'{version_string} {timestamp}',
+ at=pcb.AtPos(tile_x0, tile_y0 - tile_height/2 + sz*2.4),
+ layer=kc_gr.TextLayer('B.SilkS'),
+ effects=pcb.TextEffect(
+ font=pcb.FontSpec(face='Inter Light',
+ size=xy(sz, sz),
thickness=sz/5),
justify=pcb.Justify(h=None, v=pcb.Atom.top, mirror=True))))
@@ -424,7 +457,8 @@ for index, ((y, x), spec) in tqdm.tqdm(enumerate(zip(itertools.product(range(row
at=pcb.AtPos(tile_x0, tile_y0 - tile_height/2 + sz),
layer=kc_gr.TextLayer('F.SilkS'),
effects=pcb.TextEffect(
- font=pcb.FontSpec(size=xy(sz, sz),
+ font=pcb.FontSpec(face='Inter Medium',
+ size=xy(sz, sz),
thickness=sz/5),
justify=pcb.Justify(h=None, v=pcb.Atom.top, mirror=False))))
@@ -440,86 +474,10 @@ for index, ((y, x), spec) in tqdm.tqdm(enumerate(zip(itertools.product(range(row
b.add(cad_pr.Trace(w, coil.pad(1), pads.pad(1), waypoints=[w1], orientation=['ccw'], side='top'))
b.add(cad_pr.Trace(w, coil.pad(2), pads.pad(2), waypoints=[w2], orientation=['cw'], side='bottom'))
- px, py, _r, _f = pads.pad(1).abs_pos
- p1 = (px, py-mouse_bite_yoff)
- px, py, _r, _f = pads.pad(2).abs_pos
- p2 = (px, py+mouse_bite_yoff)
-
- p = cut_gap + 5
- q = 3
- if y == 0:
- if x > 0 and x % 2 == 1:
- wx, wy = p1
- w1 = (wx + p), (wy - q)
- w2 = (tile_x0 + tile_width/2 + cut_gap), (tile_y0 - tile_height/2 - cut_gap - q)
- w3 = (tile_x0 - coil_pitch_h + tile_width/2 + cut_gap + 2*q), (tile_y0 - tile_height/2 - cut_gap - q)
- w4 = (wx + p - coil_pitch_h), (wy - q)
- w5 = (wx - coil_pitch_h + 2*mouse_bite_yoff), (wy)
- b.add(cad_pr.Trace(join_trace_w, p1, w5, waypoints=[w1, w2, w3, w4], orientation=['cw', 'cw', 'cw', 'cw'], side='top'))
-
- else:
- wx, wy = p1
- w1 = (wx + p), (wy - q)
- w2 = (wx + p), (wy - coil_pitch_v + pad_pitch + q)
- w3 = wx, (wy - coil_pitch_v + pad_pitch + 2*mouse_bite_yoff)
- b.add(cad_pr.Trace(join_trace_w, p1, w3, waypoints=[w1, w2], orientation=['cw', 'cw', 'cw'], side='bottom'))
-
- if y == rows-1:
- if x > 0 and x % 2 == 0:
- wx, wy = p2
- w1 = (wx + p), (wy + q)
- w2 = (tile_x0 + tile_width/2 + cut_gap), (tile_y0 + tile_height/2 + cut_gap + q)
- w3 = (tile_x0 - coil_pitch_h + tile_width/2 + cut_gap + 2*q), (tile_y0 + tile_height/2 + cut_gap + q)
- w4 = (wx + p - coil_pitch_h), (wy + q)
- w5 = (wx - coil_pitch_h + 2*mouse_bite_yoff), (wy)
- b.add(cad_pr.Trace(join_trace_w, p2, w5, waypoints=[w1, w2, w3, w4], orientation=['ccw', 'ccw', 'ccw', 'ccw', 'cw'], side='top'))
-
- elif x == 0:
- wx, wy = p2
- w1 = (wx + p), (wy + q)
- w2 = (wx + p + q), (tile_y0 + tile_height/2 + cut_gap + q)
- w5 = (x0 + 4*total_width/5 - coil_pitch_h/2 - pad_pitch/2), (w2[1])
- b.add(cad_pr.Trace(join_trace_w, p2, w5, waypoints=[w1, w2], orientation=['ccw', 'cw', 'ccw'], side='bottom'))
-
- if y == 0 and x == cols-1:
- wx, wy = p1
- w1 = (wx + p + q), (wy + q)
- w2 = (wx + p), (x0 + tooling_border + cut_gap + coil_pitch_v*rows + q)
- w5 = (x0 + 4*total_width/5 - coil_pitch_h/2 + pad_pitch/2), (w2[1])
- b.add(cad_pr.Trace(join_trace_w, p1, w5, waypoints=[w1, w2], orientation=['ccw', 'ccw', 'ccw'], side='bottom'))
- pads = make_pads(x0 + 4*total_width/5 - coil_pitch_h/2, w5[1], 0, 2, pad_dia, pad_length, pad_drill, pad_pitch)
- b.add(pads)
-
k = 3
for layer in ['F.SilkS', 'B.SilkS']:
- b.add(kc_gr.Rectangle(start=xy(x-k/2, y-pad_pitch-k/2), end=xy(x+k/2, y-pad_pitch), layer=layer, stroke=pcb.Stroke(width=0),
+ b.add(kc_gr.Rectangle(start=xy(wx-k/2, wy-pad_pitch-k/2), end=xy(wx+k/2, wy-pad_pitch), layer=layer, stroke=pcb.Stroke(width=0),
fill=kc_gr.FillMode(pcb.Atom.solid)))
-b.add(pcb.Zone(layers=['F.Cu', 'B.Cu'], hatch=pcb.Hatch(),
- min_thickness=0.25, filled_areas_thickness=False,
- fill=pcb.ZoneFill(island_removal_mode=1, island_area_min=10),
- polygon=pcb.ZonePolygon(pts=pcb.PointList(xy=[
- pcb.XYCoord(x0, y0),
- pcb.XYCoord(x0, y0+total_height),
- pcb.XYCoord(x0+total_width, y0+total_height),
- pcb.XYCoord(x0+total_width, y0)]))))
-
-for x in range(0, cols):
- tile_x0 = x0 + tooling_border + cut_gap + x*coil_pitch_h
- tile_y0 = y0 + tooling_border + cut_gap
-
- w = coil_dia + coil_border*2
- y1 = y0 + total_height - tooling_border - cut_gap
-
- b.add(pcb.Zone(layers=['F.Cu', 'B.Cu'], hatch=pcb.Hatch(),
- min_thickness=0.25, filled_areas_thickness=False,
- fill=pcb.ZoneFill(island_removal_mode=1, island_area_min=10),
- keepout=pcb.ZoneKeepout(copperpour_allowed=False),
- polygon=pcb.ZonePolygon(pts=pcb.PointList(xy=[
- pcb.XYCoord(tile_x0, tile_y0),
- pcb.XYCoord(tile_x0, y1),
- pcb.XYCoord(tile_x0+w, y1),
- pcb.XYCoord(tile_x0+w, tile_y0)]))))
-
b.write('coil_test_board.kicad_pcb')