A powerful Arduino board featuring a USB (Universal Serial Bus) host interface to connect with Android based phones 54 digital inputoutput pins of which 14 can be used as PWM outputs 16 analogue inputs 4 UARTs nardware serial ports 16 M Hz crystal oscillator ICSP header Reset button Powered via USB (Universal Serial Bus) or DC 5V inputs Similar to the MEGA 2560 & UNO boards the MEGA ADK R3 features an ATmega 16U2 programmed as a USB (Universal Serial Bus)-to-serial convertor. The R3 revision 3 version offers the following new featuresbrbr 1.0 pinout added SDA & SCL pins that are near to the AREF pin & two other new pins placed near to the RESET pin the IOREF that allow the shields to adapt to the voltage provided from the board. In future shields will be compatible both with the board that use the AVR which operate with 5V & with the Arduino Due that operate with 3.3V. The second one is a not connected pin that is reserved for future purposes.br Stronger RESET circuitbr Atmega 16U2 replaces the 8U2 found on previous versionsbrbr Arduino is the brains of your next great project. This powerful board can be easily & quickly programmed through open-source software free to download from www.arduino.cc. The board itself is also open-source which means you can learn exactly how its made & use its design as the starting point for your own design of circuits. Arduino is intended to create interesting & interactive projects taking inputs from a variety of switches or sensors & controlling a variety of lights motors & other physical outputs.brbr NB Because the ADK is a USB (Universal Serial Bus) host the phone will attempt to draw power from it when it needs to charge. When the ADK is powered over USB (Universal Serial Bus) 500m A total is available for the phone & board. The external power regulator can supply up to 1500m A. 750m A is available for the phone & ADK board. An additional 750m A is allocated for any actuators & sensors attached to the board. A power supply must be capable of providing 1.5A to use this much current. The board can operate on an external supply of 5.5 to 16 volts. If supplied with less than 7V however the 5V pin may supply less than five volts & the board may be unstable. If using more than 12V the voltage regulator may overheat & damage the board. The recommended range is 7 to 12 volts.brbr For further information please visit httparduino.ccen Main Arduino Board ADK