Orangepip arduino compatible open source development boards orangepip mega2560 the orangepip mega2560 is an arduino mega2560 compatible development board based around the atmega2560 microcontroller the board features 54x digital io pins 14 of which may be used as pwm outputs 16 analog inputs 4x uarts hardware serial ports and a 16mhz crystal oscillator the board is simple to use just requiring connection to a computer via usb to get started the orangepip mega2560 is also compatible