Arduino has shrunk the UNO R4 with the Arduino Nano R4 board equipped with the same 48 MHz Renesas RA4M1 32-bit Arm ...

Posted in Arduino Hacks, green hacks Tagged arduino, arduino mega, control, efficiency, Heat pump, inverter, repair, swimming pool ...

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You can build something cheaper and more customizable with an ESP32 or a Raspberry Pi, and that's what I did. It's beautiful, ...