← Back to blog

Relay board: footprints, IPC-2221, zero DRC

CopperPilot built a relay board end to end, including custom footprints, IPC-2221 trace sizing for 10A paths, and clean DRC.

Relay board: footprints, IPC-2221, zero DRC

The frustrating part of PCB work is rarely the circuit concept. It is the repetitive overhead: missing footprints, manual current calculations, and router guardrails that are easy to miss under schedule pressure.

On this relay board, CopperPilot handled the full workflow in KiCad: schematic capture, two custom footprints from measured geometry, a new 3D part model, and IPC-2221-based trace-width sizing for 10A relay-contact paths.

It then routed all 16 nets and finished with zero DRC errors, preserving a full decision trail so every step can be audited without reverse-engineering a black box.

Try it free at copperpilot.ai.

More from the blog