How the electronics communities compare
A few giants dominate — r/electronics, r/AskElectronics and r/arduino together account for 83% of the combined membership. Size and activity don't line up perfectly: r/electronics has the most members, but r/AskElectronics gets the most new posts (about 48 a day, against 6 in r/electronics). Per member, the liveliest is r/ElectronicsRepair: 24 posts a day from 36.9K members — a smaller crowd, but an engaged one. The oldest is r/electronics, founded in 2008, and every community here is more than five years old — this is a long-established corner of Reddit.
The 7 biggest electronics subreddits
r/electronics 1,431,279 members · ~5.7 posts/day · +661 since Oct 26 · since 2008Discussion and news about component-level electronic circuits.
- Ar/AskElectronics ↗ 782,226 members · ~48 posts/day · since 2011
A subreddit for practical questions about component-level electronic circuits: design, repair, component buying, test gear and tools.
- Ar/arduino ↗ 692,370 members · ~19 posts/day · since 2008
An unofficial place for all things Arduino! We all learned this stuff from some kind stranger on the internet. Bring us your Arduino questions or help answer something you might know! 😉
- Dr/diyelectronics 330,287 members · ~24 posts/day · since 2016
This subreddit is dedicated to both amateur and professional engineers that want to build cool stuff at home, challenge themselves to learn new technologies, learn from each others' designs, and showcase their side projects.
- Ar/ArduinoProjects ↗ 187,485 members · ~4.1 posts/day · since 2014
Arduino Projects is a subreddit dedicated to showcasing new and interesting projects.
- Sr/shittyaskelectronics ↗ 38,985 members · ~5.7 posts/day · since 2014
We know what is best for you and offer only the best advice. Disclaimer: *We cannot be held responsible for any consequences due to any action based on any advice given here if you happen to live in a universe which follows the '…
- Er/ElectronicsRepair ↗ 36,929 members · ~24 posts/day · since 2017
Discover the joy of reassembling your repaired device only to find an extra screw leftover!
Choosing where to post
For beginner questions, r/AskElectronics is the natural first stop — it exists for advice, and roughly 48 new threads a day keep it moving. Competition for attention differs a lot: r/electronics has 1.4M members but only about 5.7 new posts a day — roughly one new post for every 251.1K members — while r/AskElectronics gets about 48 a day, one for every 16.2K. A strong, well-made post therefore has more room to be seen in r/electronics; r/AskElectronics is better when you want quick replies.
Big subreddits give a post the widest audience, but they also bury it quickly; the mid-sized communities on this list are usually friendlier for questions and first posts. Always read the rules in the sidebar first — each community is run by its own volunteer moderators. Our guide to searching Reddit explains how to dig through any of these communities, and the subreddit info tool gives you the stats of one we don't list.
Frequently asked questions
What is the biggest electronics subreddit?
r/electronics is the largest, with 1,431,279 members, followed by r/AskElectronics (782.2K) and r/arduino (692.4K).
Which electronics subreddit is the most active?
By new posts per day, r/AskElectronics leads with about 48, ahead of r/diyelectronics (24). Counts are averages over the last seven days.
Where should a beginner ask about electronics on Reddit?
r/AskElectronics is the one built around questions and advice, with about 48 new posts a day. Check its rules and search it first — common questions have usually been answered.
How many electronics subreddits are there?
We list 7 active, safe-for-work electronics communities with at least 25,000 members each, 3.5M members in total (people can be in several). Reddit has many smaller ones too; our guide on searching Reddit shows how to find them.
What is the oldest electronics subreddit?
r/electronics, created on Apr 20, 2008.
Are these electronics subreddits safe for work?
Yes. Every community on this page is public and not marked 18+ by Reddit, and we filter out communities whose name or description points to adult content.
Data: Reddit's public subreddit search and the Arctic Shift archive (Nov 6, 2026), growth from SubMouse's weekly snapshots. Member counts of communities outside our Top 1000 come from the archive and can lag a little. Not affiliated with Reddit.