florian.berthold
a8e63aa45c
- Fixed KiCad 8 PCB file format (text rotation syntax) - PCB now loads correctly with board outline and labels - Added Python placement script for KiCad scripting console - Updated PCB_LAYOUT.md with quick start instructions Next step: Open in KiCad, run Update PCB from Schematic, then use Freerouting or manual routing to complete traces.
125 lines
3.6 KiB
Python
125 lines
3.6 KiB
Python
#!/usr/bin/env python3
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"""
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KiCad PCB Component Placement Script for SN-L00
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Run this script in KiCad's Scripting Console (Tools > Scripting Console)
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after running "Update PCB from Schematic" to place all components.
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Usage in KiCad scripting console:
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exec(open('/path/to/place_components.py').read())
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"""
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import pcbnew
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# Component placement coordinates (mm) based on CPL_PCBWay.csv
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# Format: {Reference: (x, y, rotation, layer)}
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# Layer: "F.Cu" for top, "B.Cu" for bottom
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PLACEMENTS = {
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# Capacitors
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"C1": (10.0, 60.0, 0, "F.Cu"),
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"C2": (18.0, 60.0, 0, "F.Cu"),
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"C3": (21.0, 60.0, 0, "F.Cu"),
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"C4": (7.0, 68.0, 0, "F.Cu"),
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"C5": (21.0, 68.0, 0, "F.Cu"),
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# Resistors
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"R1": (10.0, 35.0, 0, "F.Cu"),
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"R2": (24.0, 36.0, 90, "F.Cu"),
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"R3": (7.0, 76.0, 90, "F.Cu"),
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"R4": (21.0, 76.0, 90, "F.Cu"),
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"R5": (18.0, 76.0, 90, "F.Cu"),
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"R6": (18.0, 72.0, 90, "F.Cu"),
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# Diodes
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"D1": (7.0, 65.0, 0, "B.Cu"), # Bottom layer
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"D2": (24.0, 31.5, 90, "F.Cu"),
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"D3": (24.0, 70.0, 90, "F.Cu"),
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"D4": (24.0, 74.0, 90, "F.Cu"),
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# ICs
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"U1": (14.0, 65.0, 0, "B.Cu"), # LDO on bottom
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"U2": (7.0, 72.0, 0, "F.Cu"), # Schmitt trigger
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"U3": (21.0, 72.0, 0, "F.Cu"), # Op-amp
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# Connectors
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"J1": (14.0, 92.0, 0, "F.Cu"), # Power header
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"J2": (7.0, 83.0, 0, "F.Cu"), # TRIG jack
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"J3": (21.0, 83.0, 0, "F.Cu"), # RETURN jack
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# Switch
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"SW1": (14.0, 31.5, 0, "F.Cu"),
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# Modules (hand-solder, placement reference only)
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"MOD1": (14.0, 46.5, 0, "F.Cu"), # RP2040-Zero
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"MOD2": (14.0, 17.5, 0, "F.Cu"), # OLED
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}
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def place_components():
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"""Place all components according to the PLACEMENTS dictionary."""
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board = pcbnew.GetBoard()
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if not board:
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print("Error: No board loaded!")
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return
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placed = 0
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not_found = []
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for ref, (x, y, rotation, layer) in PLACEMENTS.items():
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# Find the footprint by reference
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fp = board.FindFootprintByReference(ref)
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if fp is None:
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not_found.append(ref)
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continue
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# Convert mm to internal units (nanometers)
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pos = pcbnew.VECTOR2I(pcbnew.FromMM(x), pcbnew.FromMM(y))
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fp.SetPosition(pos)
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# Set rotation (in tenths of degrees)
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fp.SetOrientationDegrees(rotation)
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# Set layer (flip if on bottom)
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if layer == "B.Cu" and fp.GetLayer() == pcbnew.F_Cu:
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fp.Flip(pos, False)
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elif layer == "F.Cu" and fp.GetLayer() == pcbnew.B_Cu:
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fp.Flip(pos, False)
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placed += 1
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print(f"Placed {ref} at ({x}, {y}) rot={rotation}° on {layer}")
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if not_found:
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print(f"\nNot found (run 'Update PCB from Schematic' first): {not_found}")
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print(f"\nPlaced {placed}/{len(PLACEMENTS)} components")
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# Refresh the board view
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pcbnew.Refresh()
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def add_mounting_holes():
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"""Add M3 mounting holes at standard Eurorack positions."""
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board = pcbnew.GetBoard()
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# Check if mounting holes already exist
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for fp in board.GetFootprints():
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if "MountingHole" in fp.GetValue():
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print("Mounting holes already exist, skipping...")
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return
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# Would need to load footprint from library - simplified for this script
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print("Add mounting holes manually:")
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print(" MH1: (14, 5) - Top")
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print(" MH2: (14, 95) - Bottom")
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print(" Footprint: MountingHole:MountingHole_3.2mm_M3")
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if __name__ == "__main__":
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print("SN-L00 Component Placement Script")
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print("=" * 40)
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place_components()
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add_mounting_holes()
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print("\nDone! Run DRC and then route traces.")
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