Microcontroller wiring and circuit questions need electronics rooms, not only general coding forums. r/Arduino welcomes Arduino questions with detail. r/AskElectronics focuses on component-level circuit design, repair and tools — not general app programming.
Where to ask
Best for: Arduino project questions when you can share board, wiring, code and the failure mode.
Why it fits: Its public description: “An unofficial place for all things Arduino! … Bring us your Arduino questions or help answer something you might know!”
Rules to know before posting:
- Be kind — especially to beginners; no witch hunts or heavy NSFW behavior.
- Be descriptive — board model, components, code, goal and what went wrong.
- Be helpful — low-quality, meme, bot, stolen or political/religious off-topic content is removed.
- Grow the community — don’t use the room only as an unpaid promo channel for a monetized external presence.
- No potentially dangerous projects (weapons, medical devices and similar harmful builds as framed by the room).
Read r/Arduino’s current rules on Reddit
Best for: Practical component-level circuit design, repair, parts and test-gear questions.
Why it fits: Its public description: “A subreddit for practical questions about component-level electronic circuits: design, repair, component buying, test gear and tools.”
Rules to know before posting:
- Comments must be civil and helpful.
- Questions must be on-topic, explanatory, non-commercial and original — chip-level signal coding can fit; general programming does not.
- Titles and bodies must clearly summarize the question — photo-only diagnosis posts without explanation are removed.
- Extra rules apply to vehicle electronics questions — read that wiki section before posting car electrical topics.
- Search the sidebar/wiki/FAQ before repeating covered questions.
- Joke comments that do not help can be deleted instantly.
- Unsafe advice is removed — DIY microwave-oven repair questions are deleted.
Read r/AskElectronics’s current rules on Reddit
Before you post
- Post a clear photo of the wiring plus the schematic you intended — “it doesn’t work” alone rarely gets far.
- General Python/Arduino-adjacent code structure questions may still fit coding or Python where-to-post pages when the issue is not electrical.
- Mains wiring and household electrical work may require a licensed electrician — peer hobby advice is not a permit.
Related on SubMouse
Rule summaries are paraphrased from each community’s published rules (public archive copy retrieved 7 November 2026; original snapshot date unavailable). Current rules may differ — check the community’s rules before posting. A good fit does not guarantee a reply.