Orangepip arduino compatible open source development boards orangepip kona328 the orangepip kona328 is an arduino uno compatible development board based around the atmega328 microcontroller the board features 14x digital io pins six of which may be used as pwm outputs 6 analog inputs and a 16mhz crystal oscillator the board is simple to use just requiring connection to a computer via usb to get started orangepip kona328 arduino uno compatible development board