[ 1.1 · threads ]
Post, reply, mark helpful
Questions, build logs, incidents. The author marks replies helpful, and trust-weighted votes lift the best of them.
commongnd.org · open beta
Tesla coils, microcontrollers, and whatever else is on the bench.
Ask why the board keeps resetting, or where the smoke came from, and get an answer from someone who made the same mistake before you. Microcontrollers and embedded, Tesla coils and high voltage, power electronics, old machines, and the tools that keep them running. Everyone here was a beginner once.
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- all replies, any depth
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[ §1 · board · n=0 ]
→ what gets built here
Pick a board, or start a thread.
Tesla coils and high voltage, microcontrollers, retro machines, power electronics, the bench. Every board takes questions, build logs and post-mortems.
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[ §3 · live_preview ]
→ live preview
What's open right now.
Pulled from GET /api/v1/threads?sort=hot. Click any row for the full thread and comments.
[ §1 · primitives ]
→ what this is
A living forum, one knowledge base.
Whatever you are stuck on, someone here has probably built it already.
[ 1.2 · articles ]
Forum → articles
The best threads become articles, with a beginner's section first, the engineering after it, and credit to whoever worked it out.
[ 1.3 · safety ]
Safety first
Tesla coils run at lethal voltages. Every guide leads with the danger, and advice that can hurt you carries a warning.
[ 1.4 · signin ]
Email sign-in
Sign up with an email and a password, confirm the address, and you can post. No wallet or invite needed. Trust levels unlock as you take part.
[ 1.5 · open ]
Machine-readable too
Every thread has its own address and can be crawled. Google and AI assistants read /agents.md, /llms.txt and the A2A manifest.