ArduPower is an open-source PLC based on Arduino, designed for automation in industry, smart homes, and Makers projects. Fully configurable, it offers the power and versatility needed for the development of any automation project. The PowerIO channels can be configured as input or output and are grouped in blocks with different voltage levels. Programming is easily done through the Arduino IDE via USB, using the Arduino Leonardo board. An LED lighting system shows the configuration and voltage level of each channel. Its design allows the incorporation of shields for additional functions such as WiFi or Bluetooth, and it can be installed on a DIN rail to facilitate its use in automation panels. ArduPower is ideal for engineers and automation enthusiasts, providing customizable and efficient solutions for multiple applications, both domestic and industrial.