PCB boards Solar panel control & multi sensors board: x3 INA219 x2 I2C sensor x2 UART sensor x2 I2C display usage example https://www.thingiverse.com/thing:4438088 PZEM-004 + ESP+01S board: x2 I2C sensor x3 phase more info arendst/Tasmota#2315 usage example https://www.thingiverse.com/thing:4583701 usage example https://www.thingiverse.com/thing:4583058 usage example https://www.thingiverse.com/thing:4587966 Home Weather Station (multi sensors board): x2 I2C sensor x2 UART sensor x1 I2C display usage example https://www.thingiverse.com/thing:4407535 Support for DC motor: x2 motor drivers Support for Servo: x2 Servo AS5600 Position Sensor. I2C protocol. Home ventilation. E-PAPER (E-INK). Control the AC / DC motor using Sonoff 4ch pro. PC fan. SPI multi display. I2C multi display. ...