pcb-claude-plugin

This Claude Code plugin, now renamed Viaduct, takes a board described in plain English and produces a manufacturable KiCad 9 project: requirements, parts, schematic, placement, autorouting, checks, Gerbers, BOM and pick-and-place, with Claude as the electrical engineer. The repository was renamed from pcb-claude-plugin to virajrungta/viaduct, and the commands are now /viaduct:design, /viaduct:review, /viaduct:inquiry and /viaduct:fab.

Claude asks questions first about size, power, connectors, build method and noise sensitivity, then picks real parts from KiCad's libraries, follows each chip's datasheet, validates every pin, and routes with Freerouting plus ground pours on both layers. Electrical checks run before layout, covering logic-level mismatches, rail current budgets and regulators that would overheat, and noise checks cover decoupling distance, ground-plane integrity, crosstalk and differential pairs.

Every design is a normal KiCad 9 project that can be opened and edited at any point, and a circuit-reviewer subagent gives an independent second opinion against datasheets. The plugin ships prebuilt verified building blocks for USB-C power, regulators, ESP32-C3 and S3 and ATmega328P cores and more, and its knowledge base is built from hundreds of real open-source boards. Autorouted boards are functional, not optimal, and the README says to always review a design before ordering boards.