ProductOfAmerica

Use when placing footprints on a PCB, routing traces, adding vias or copper zones, deciding trace widths, or planning board layout strategy. Also use when the user asks about PCB stackup, ground planes, trace spacing, or component placement on a board.

Use when executing a schematic placement plan (plan mode) or modifying an existing schematic (modification mode).

Use after circuit-design produces a validated BOM (specs/bom.md) to plan exact component placement coordinates and wiring before schematic capture begins. Pure planning — no file modifications.

Use when starting any conversation involving electronics, KiCad, PCB design, schematic capture, circuit design, or EDA tasks.

Use when running ERC or DRC checks, fixing electrical or design rule violations, debugging unconnected nets, resolving "power pin not driven" errors, or preparing a design for manufacturing export. Also use when the user says "my ERC has errors" or "DRC is failing."

Use when designing an electronic circuit from requirements, choosing topology or regulator type, selecting component values, planning protection circuits, or deciding what goes on a board before schematic capture begins. Also use when the user asks "what components do I need" or "how should I power this."

Use when working in a repo that has cairn installed — teaches when to invoke cairn, which skills wrap which verification moments, and how YAML specs are derived silently from prose. Routes to spokes for deep topics (YAML authoring, hash placeholders, source-hash comment format, code-reviewer pattern).

Use when executing an implementation plan inside a cairn-tracked repo. Composition over superpowers:subagent-driven-development — same dispatch flow, with cairn task claim / evidence / verdict / complete checkpoints inserted at named steps.

Use when about to claim work is complete inside an active cairn claim. Composition over superpowers:verification-before-completion — same Iron Law, with evidence put + verdict bound before the completion claim. Tracked-only. Without an active claim, use superpowers:verification-before-completion directly.