Add Arduino Uno schematic tutorial

[2bf]

/claim #42

Archived bounty issue:

• Create Arduino Uno (Schematic Only) docs-old#42

Summary

• add a schematic-only Arduino Uno style tutorial with a live CircuitPreview snippet
• model the core Uno Rev3 blocks: ATmega328P, ATmega16U2 USB-serial bridge, 16 MHz clock, reset, USB/barrel-jack power, 5 V and 3.3 V rails, ICSP, and shield headers
• include official Arduino source links, block notes, and an Arduino-to-ATmega pin mapping table

Verification

• npm exec --yes prettier -- --write docs/tutorials/arduino-uno-schematic.mdx
• bun run format:check
• bun run typecheck
• bun run docusaurus build
• git diff --cached --check
• Extracted the CircuitPreview code and requested the svg.tscircuit.com schematic endpoint; it returned an SVG.

Notes:

• The archived docs-old issue is locked/read-only, so GitHub rejected my /attempt #42 comment before this PR.
• npx tscircuit docs/tutorials/arduino-uno-schematic.mdx snippet compile currently fails before reading this document because the installed tscircuit@0.0.1774 dependency graph errors with Export named ms not found in module .../circuit-json/dist/index.mjs.

AI-assisted with Codex; I reviewed the diff and kept the change scoped.

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Project	Deployment	Actions	Updated (UTC)
docs	Ready	Preview, Comment	May 20, 2026 5:41pm