Open-source boards designed in KiCad by 21km43 on GitHub, from 7 repositories. A board’s address here is its repository’s there.
21km43/ESP32-C3-DevBoard
ESP32-C3 Development Board
21km43/WCH-LinkE-Mini
WCH-LinkE-Mini
21km43/AE-7SEG-BOARD
7セグメントLEDシリアルドライバキット
21km43/Ammeter
Ammeter with INA226
21km43/anemometer_board
風速計(基板)
21km43/UART-RS485
UART to RS485 converter
21km43/USB-TYPE-C
USB Type-C Board