The ODROID-ADK is a microcontroller board based on the PIC24FJ64GB002-I/ML from Microchip. It has an embedded USB host interface to connect with Android Smartphone directly or Bluetooth adaptor. It has 11 digital input/output pins (of which 5 can be used as PWM outputs), 3 analog inputs, Li-polymer battery charger, a USB connection, a 5Volt DC/DC converter for USB Bus power, a power jack(USB Mini-B), an ICSP header, a pressure sensor to measure altitude and a power switch.