DIY Electronics
For hobbyists and electronics tinkerers.
Communities for makers, hardware hackers, and DIY electronics enthusiasts who build physical and software projects from scratch.
Communities

A subreddit for the discussion of home automation, smart homes, and connected devices.
A community dedicated to learning hardware. Share projects, tutorials, and connect with other hardware enthusiasts.
A community for engineers and hobbyists to discuss circuits, projects, microcontrollers, and IoT devices.
An electronics community created by engineers for engineers, dedicated to solving problems and exploring new technologies.

Dedicated to both amateur and professional engineers who enjoy building electronics at home, learning new technologies, sharing designs, and showcasing side projects.

A community for discussing Espressif ESP32 microcontrollers, projects, and development.

Focuses on electronic circuits at the component level, including design, repair, component buying, and test gear.
One of the largest and most active forums for electronics engineering professionals, students, hobbyists, hackers, and makers.

A large community for makers, hackers, artists, designers, and engineers who share projects, coordinate events, and build open-source hardware like CircuitPython.