Pi MIDI Cyberdeck

V

vibraize

Proceed with all three next steps, no need to check back in between:
Routing: Investigate why the point-to-point router fails on simple nets before defaulting to a full autorouter pass — check whether the current DRC ruleset (clearance/trace width) or the leftover RP2040 footprint geometry is blocking it. Route USB D+/D− (J41) and power/GND nets manually first since those need controlled clearance, then autoroute the rest with neckdowns enabled where needed.
RP2040 footprint: Replace the workaround with a correct QFN-56 exposed-pad footprint with a valid GND thermal pad. Keep all existing pin/net assignments as documented — do not renumber or reassign any nets.
Re-run DRC after both fixes and report final error/warning count.
Enclosure cutouts stay on my end with the measurement photos and calipers — no action needed from you there.

flux

Understood — I’ll focus only on PCB/routing: diagnose the routing blockage, replace the RP2040 footprint workaround with a correct exposed-pad footprint while preserving nets, manually handle USB/power first if possible, then run final DRC.

flux

I’m blocked from continuing because the account has no available ACUs.
Accomplished this session:
  • Investigated the point-to-point routing failure.
  • Confirmed routing was blocked by escape width / clearance constraints: 0.15 mm failed on simple nets, while 0.05 mm could route.
  • Replaced the RP2040 asset-based footprint with a parametric QFN footprint attempt while preserving pin/net assignments.
  • The generated/parametric RP2040 footprint still could not produce a proper full-size exposed GND pad without DRC conflicts, so I restored the DRC-clean center-pad workaround.
  • Tagged the RP2040 USB MIDI D+/D− nets as controlled-impedance pairs.
  • Removed all bad diagnostic/manual route geometry so the board is back to a clean placed-but-unrouted state.
Final check result before ACUs ran out:
  • 151 DRC errors
  • 0 warnings
  • These are airwires only; no overlapping-copper / missing-footprint / invalid-layer / placement-overlap errors were reported in the final check.
Open items:
  • Full routing still needs a proper autorouter / neckdown-capable routing pass.
  • RP2040 still needs a production-quality footprint fix with a valid exposed GND pad.
  • The current board is not fabrication-ready until routing and final DRC are clean.
Audit open issues
Check ACU settings
Prioritize unrouted nets
Find RP2040 footprint
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Pi MIDI Cyberdeck