KiCad sourceMicrocontroller boards
Easyduino
by Hanqaqa
Easily dive into different PCB KiCad designs of the most popular microcontroller devboards
745 36CERN-OHL-P-2.0
Open ESP32 boards, modules and wireless controller designs with editable schematic and PCB source files.
KiCad sourceby Hanqaqa
Easily dive into different PCB KiCad designs of the most popular microcontroller devboards

by ExpressLRS
Open-source PCB designs, schematics, and 3D-printable cases for ExpressLRS TX modules and receivers

by agamrossen
Open-source acoustic drone detection. It hears the propellers, not the radio, so it works against fibre-optic FPV aircraft that emit no signal at all.

by jibrilsharafi
Smart energy meter capable of monitoring up to 16 channels. Supports MQTT, REST API, Modbus TCP, InfluxDB, AWS IoT Core. Friendly UI and fully open source (PCB, schematics, components, source code)