diff options
Diffstat (limited to 'twisted_coil_gen_twolayer.py')
| -rw-r--r-- | twisted_coil_gen_twolayer.py | 53 |
1 files changed, 41 insertions, 12 deletions
diff --git a/twisted_coil_gen_twolayer.py b/twisted_coil_gen_twolayer.py index d57bae7..b46fc23 100644 --- a/twisted_coil_gen_twolayer.py +++ b/twisted_coil_gen_twolayer.py @@ -2,6 +2,7 @@ import subprocess import sys +import math import multiprocessing import os from math import * @@ -329,11 +330,17 @@ def traces_to_gmsh_mag_mutual(traces, mesh_out, bbox, model_name='gerbonara_boar gmsh.logger.start() m_dx, m_dy, m_dz = mutual_offset + m_ax, m_ay, m_az = mutual_rotation m_dz += 2*copper_thickness + board_thickness toplevel_tag1, interface_tag_top1, interface_tag_bottom1, substrate1 = _gmsh_coil_inductance_geometry(traces, mesh_out, bbox, copper_thickness, board_thickness, air_box_margin_h) - occ.translate([(3, toplevel_tag1), (2, interface_tag_top1), (2, interface_tag_bottom1), (3, substrate1)], m_dx, m_dy, m_dz) + upper_coil = [(3, toplevel_tag1), (3, substrate1)] + occ.translate(upper_coil, m_dx, m_dy, m_dz) + + print('rotate') + with model_delta(): + occ.rotate(upper_coil, 0, 0, 0, 0, 0, 1, m_az) toplevel_tag2, interface_tag_top2, interface_tag_bottom2, substrate2 = _gmsh_coil_inductance_geometry(traces, mesh_out, bbox, copper_thickness, board_thickness, air_box_margin_h) @@ -357,10 +364,14 @@ def traces_to_gmsh_mag_mutual(traces, mesh_out, bbox, model_name='gerbonara_boar occ.synchronize() first_geom = traces[0][0] - pcx, pcy = first_geom.start.x, first_geom.start.y + pcx, pcy = first_geom.start.x + m_dx, first_geom.start.y + m_dy + pcx, pcy = math.cos(m_az) * pcx - math.sin(m_az) * pcy, math.sin(m_az) * pcx + math.cos(m_az) * pcy pcr = first_geom.width/2 + (_dim, plane_top1), = gmsh.model.getEntitiesInBoundingBox(pcx-pcr-eps, pcy-pcr-eps, m_dz-eps, pcx+pcr+eps, pcy+pcr+eps, m_dz+eps, 2) (_dim, plane_bottom1), = gmsh.model.getEntitiesInBoundingBox(pcx-pcr-eps, pcy-pcr-eps, m_dz-board_thickness-eps, pcx+pcr+eps, pcy+pcr+eps, m_dz-board_thickness+eps, 2) + + pcx, pcy = first_geom.start.x, first_geom.start.y (_dim, plane_top2), = gmsh.model.getEntitiesInBoundingBox(pcx-pcr-eps, pcy-pcr-eps, -eps, pcx+pcr+eps, pcy+pcr+eps, eps, 2) (_dim, plane_bottom2), = gmsh.model.getEntitiesInBoundingBox(pcx-pcr-eps, pcy-pcr-eps, -board_thickness-eps, pcx+pcr+eps, pcy+pcr+eps, -board_thickness+eps, 2) @@ -511,6 +522,7 @@ def print_valid_twists(ctx, param, value): @click.option('--inner-diameter', type=float, default=25, help='Inner diameter [mm]') @click.option('--trace-width', type=float, default=None) @click.option('--via-diameter', type=float, default=0.6) +@click.option('--two-layer/--single-layer', default=True) @click.option('--via-drill', type=float, default=0.3) @click.option('--via-offset', type=float, default=None, help='Radially offset vias from trace endpoints [mm]') @click.option('--keepout-zone/--no-keepout-zone', default=True, help='Add a keepout are to the footprint (default: yes)') @@ -528,6 +540,7 @@ def print_valid_twists(ctx, param, value): @click.option('--mutual-offset-x', type=float, default=0) @click.option('--mutual-offset-y', type=float, default=0) @click.option('--mutual-offset-z', type=float, default=5) +@click.option('--mutual-rotation-z', type=float, default=0) @click.option('--magneticalc-out', type=click.Path(writable=True, dir_okay=False, path_type=Path)) @click.option('--clipboard/--no-clipboard', help='Use clipboard integration (requires wl-clipboard)') @click.option('--counter-clockwise/--clockwise', help='Direction of generated spiral. Default: clockwise when wound from the inside.') @@ -535,7 +548,9 @@ def print_valid_twists(ctx, param, value): def generate(outfile, turns, outer_diameter, inner_diameter, via_diameter, via_drill, via_offset, trace_width, clearance, footprint_name, layer_pair, twists, clipboard, counter_clockwise, keepout_zone, keepout_margin, arc_tolerance, pcb, mesh_out, magneticalc_out, circle_segments, mag_mesh_out, copper_thickness, - board_thickness, mag_mesh_mutual_out, mutual_offset_x, mutual_offset_y, mutual_offset_z): + board_thickness, mag_mesh_mutual_out, mutual_offset_x, mutual_offset_y, mutual_offset_z, mutual_rotation_z, + two_layer): + if 'WAYLAND_DISPLAY' in os.environ: copy, paste, cliputil = ['wl-copy'], ['wl-paste'], 'xclip' else: @@ -552,7 +567,7 @@ def generate(outfile, turns, outer_diameter, inner_diameter, via_diameter, via_d outer_radius = outer_diameter/2 inner_radius = inner_diameter/2 - turns_per_layer = turns/2 + turns_per_layer = turns/2 if two_layer else turns sweeping_angle = 2*pi * turns_per_layer / twists spiral_pitch = (outer_radius-inner_radius) / turns_per_layer @@ -606,6 +621,7 @@ def generate(outfile, turns, outer_diameter, inner_diameter, via_diameter, via_d print(f'Outer via ring @r={outer_via_ring_radius:.2f} mm (from {outer_radius:.2f} mm)', file=sys.stderr) print(f' {degrees(outer_via_angle):.1f} deg / via', file=sys.stderr) + # Check if the vias of the inner ring are so large that they would overlap if inner_via_angle*twists > 2*pi: min_dia = 2*((via_diameter + clearance) / (2*sin(pi / twists)) + via_offset) raise click.ClickException(f'Error: Overlapping vias in inner via ring. Calculated minimum inner diameter is {min_dia:.2f} mm.') @@ -620,9 +636,7 @@ def generate(outfile, turns, outer_diameter, inner_diameter, via_diameter, via_d out_paths = [] svg_stuff = [*out_paths] - - # See https://coil32.net/pcb-coil.html for details - + # For fill factor & inductance formulas, See https://coil32.net/pcb-coil.html for details d_avg = (outer_diameter + inner_diameter)/2 phi = (outer_diameter - inner_diameter) / (outer_diameter + inner_diameter) c1, c2, c3, c4 = 1.00, 2.46, 0.00, 0.20 @@ -633,7 +647,6 @@ def generate(outfile, turns, outer_diameter, inner_diameter, via_diameter, via_d print(f'Fill factor: {phi:g}', file=sys.stderr) print(f'Approximate inductance: {L:g} µH', file=sys.stderr) - make_pad = lambda num, layer, x, y: kicad_fp.Pad( number=str(num), type=kicad_fp.Atom.smd, @@ -668,7 +681,6 @@ def generate(outfile, turns, outer_diameter, inner_diameter, via_diameter, via_d clearance=clearance, zone_connect=0) - use_arcs = not pcb pads = [] lines = [] arcs = [] @@ -704,6 +716,8 @@ def generate(outfile, turns, outer_diameter, inner_diameter, via_diameter, via_d #print(f'{indent} -> good fit', file=sys.stderr) def do_spiral(layer, r1, r2, a1, a2, start_frac, end_frac, fn=64): + use_arcs = not pcb + fn = ceil(fn * (a2-a1)/(2*pi)) x0, y0 = cos(a1)*r1, sin(a1)*r1 direction = '↓' if r2 < r1 else '↑' @@ -747,7 +761,7 @@ def generate(outfile, turns, outer_diameter, inner_diameter, via_diameter, via_d return (x0, y0), (xn, yn), sum(dists) sector_angle = 2*pi / twists - total_angle = twists*2*sweeping_angle + total_angle = twists*2*sweeping_angle if two_layer else twists*sweeping_angle inverse = {} for i in range(twists): @@ -761,7 +775,19 @@ def generate(outfile, turns, outer_diameter, inner_diameter, via_diameter, via_d x = inverse[i]*floor(2*sweeping_angle / (2*pi)) * 2*pi (x0, y0), (xn, yn), clen = do_spiral(0, outer_radius, inner_radius, start_angle, fold_angle, (x + start_angle)/total_angle, (x + fold_angle)/total_angle, circle_segments) - do_spiral(1, inner_radius, outer_radius, fold_angle, end_angle, (x + fold_angle)/total_angle, (x + end_angle)/total_angle) + if two_layer: + do_spiral(1, inner_radius, outer_radius, fold_angle, end_angle, (x + fold_angle)/total_angle, (x + end_angle)/total_angle) + else: + dr = outer_radius - inner_radius + xq = xn + cos(fold_angle) * dr + yq = yn - sin(fold_angle) * dr + lines.append(make_line(xn, yn, xq, yq, layer_pair[1])) + + r, g, b, _a = mpl.cm.plasma((x + fold_angle)/total_angle) + path = SVGPath(fill='none', stroke=f'#{round(r*255):02x}{round(g*255):02x}{round(b*255):02x}', stroke_width=trace_width, stroke_linejoin='round', stroke_linecap='round') + svg_stuff.append(path) + path.move(xn, yn) + path.line(xq, yq) xv, yv = inner_via_ring_radius*cos(fold_angle), inner_via_ring_radius*sin(fold_angle) pads.append(make_via(xv, yv, layer_pair)) @@ -882,7 +908,10 @@ def generate(outfile, turns, outer_diameter, inner_diameter, via_diameter, via_d if mag_mesh_mutual_out: m_dx, m_dy, m_dz = mutual_offset_x, mutual_offset_y, mutual_offset_z - traces_to_gmsh_mag_mutual(traces, mag_mesh_mutual_out, ((-r, -r), (r, r)), copper_thickness=copper_thickness, board_thickness=board_thickness, mutual_offset=(m_dx, m_dy, m_dz)) + mutual_rotation_z = math.radians(mutual_rotation_z) + traces_to_gmsh_mag_mutual(traces, mag_mesh_mutual_out, ((-r, -r), (r, r)), + copper_thickness=copper_thickness, board_thickness=board_thickness, + mutual_offset=(m_dx, m_dy, m_dz), mutual_rotation=(0, 0, mutual_rotation_z)) if magneticalc_out: traces_to_magneticalc(traces, magneticalc_out) |