Open-source boards designed in KiCad by hansrune on GitHub, from 4 repositories. A board’s address here is its repository’s there.
hansrune/BallValveController
Ball valve controller for irrigation, water automations and leak prevention. Supports CR05 feedback wiring. Based on ESP32c3. ESPEasy and ESPHome based firmware build instructions included
hansrune/HeatPumpControl
ESP32c3 board with IR blaster and serial ports for heat pump control over local WiFi with ESPHome or ESPEasy firmwares
hansrune/RelayBoardX3
3x relay board used for garage door control and ventilator motors
hansrune/WaterValveX4
4-way water valve control with flow meter and I2C / GPIO pin headers