2. Using Arduino Power Jack Arduino Uno and all many other big form factor Arduino boards are equipped with a standard 2.1mm DC power jack. Arduino Uno accepts 7-12V dec through this port and the ...

Arduino software and hardware to control a 12V off-grid solar system with 1000W power inverter for a fridge and lighting. The arduino is a 3V JeeNode, but I might change it for a simple arduino. The ...

With it, via I2C, I could add an Arduino Pro Mini, and an I2C Oled Display and make a watch capable of having all this information, plus a pedometer (by analysing accelerometer data).