BBRouter
Breadboard wiring you can get wrong in a browser instead of on your desk
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Anyone weighing up a PCB autorouter gets a reproducible comparison on boards humans already routed well, with the harness and the scoring in the open.
The benchmark takes open-hardware boards that humans routed, strips the traces, keeps the placement and the rules, and hands every autorouter the same job under a 1,200-second cap. KiCad does the scoring: connections completed, DRC errors added, electrical quality on top. Freerouting, tscircuit, KiCad Routing Tools, TraceMaker and Koppar's own router all run it. The README is candid about its limits: human layouts still win on vias and track length, some rival figures are quoted rather than re-run, and Koppar maintains a benchmark it competes in. MIT; boards are fetched, not vendored.
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