Subreddits for Robotics Enthusiasts

FAQ

What are Robotics subreddits?

Communities for robotics enthusiasts, engineers, and educators covering hardware builds, automation, and research. Discord hosts maker communities for Arduino and Raspberry Pi projects, while professional and academic organizations serve more specialized robotics practitioners and researchers. This page focuses on communities hosted on Reddit, so you can compare their size, features, reviews, and access requirements in one place.

What are the most popular robotics subreddits on Hive Index?

r/robotics, r/PLC, r/Battlebots, and r/embedded are among the most popular robotics subreddits in the Hive Index directory of communities, based on visitor interest on Hive Index. This is not a universal quality score. You can also compare listings by review scores, member counts, and listing age on Hive Index.

Are robotics subreddits free to join?

All 10 listings in the Hive Index directory of communities are marked as free to join. Popular examples include r/robotics, r/PLC, r/Battlebots, and r/embedded. Access rules can still change on the community side.

What features do these subreddits include?

Forum is the most common feature (100% of listings).

How large are robotics subreddits?

Hive Index lists 10 robotics subreddits in the Hive Index directory of communities. The largest include r/raspberry_pi (3.3M members), r/arduino (782K members), and r/robotics (339K members). Median reported size is about 212K members (10 listings with member data). We only have a handful of listings so far, so treat these numbers as directional.

How do I join a Robotics community on Reddit?

Browse listings in the Hive Index directory of communities, open a community that fits your needs, and follow its join link to Reddit. Some communities may require an application or paid membership, which is shown on the listing when known.

How do I grow my Robotics community on Reddit?

List your Robotics community on Reddit for free on Hive Index to reach people already searching for Robotics subreddits. Paid promotion can feature your community more prominently across relevant pages and send more qualified visitors to your listing.

How does Hive Index collect and rank listings?

Listings are submitted by community builders and researchers, reviewed for topic relevance, and updated with platform, feature, member, review, and traffic data where available. Member counts are approximate. Popular reflects visitor interest in the Hive Index directory of communities, with richer profiles breaking ties. Ratings, Largest, and Newest use review scores, reported member counts, and listing age instead. These listings in the Hive Index directory of communities were last updated 4/24/2026.