A power supply must be capable of providing 1.5A to use this much current. An additional 750mA is allocated for any actuators and sensors attached to the board. 750mA is available for the phone and MEGA ADK board. When the ADK is powered over USB, 500mA total is available for the phone and board.The external power regulator can supply up to 1500mA. NB: Because the MEGA ADK is a USB Host, the phone will attempt to draw power from it when it needs to charge. Leads from a battery can be inserted in the Gnd and Vin pin headers of the POWER connector. The adapter can be connected by plugging a 2.1mm center-positive plug into the board's power jack. The power source is selected automatically.Įxternal (non-USB) power can come either from an AC-to-DC adapter (wall-wart) or battery. The Arduino Mega can be powered via the USB connection or with an external power supply. The Arduino USB Host Shield can be used with the "USB Host Library for Arduino" hosted by Oleg Mazurov and Alexei Glushchenko from Kristian Lauszus and Andrew Kroll on GitHub (download). The second one is a not connected pin, that is reserved for future purposes.įor information on using the board with the Android OS, see: In future, shields will be compatible both with the board that use the AVR, which operate with 5V and with the Arduino Due that operate with 3.3V. 1.0 pinout: added SDA and SCL pins that are near to the AREF pin and 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.Revision 3 of the board has the following new features: Revision 2 of the Mega ADK board has a resistor pulling the 16U2 HWB line to ground, making it easier to put into DFU mode. Similar to the Mega 2560 and Uno, it features an ATmega16U2 programmed as a USB-to-serial converter. It has 54 digital input/output pins (of which 15 can be used as PWM outputs), 16 analog inputs, 4 UARTs (hardware serial ports), a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. The Arduino Mega ADK is a microcontroller board based on the ATmega2560 ( datasheet). It has a USB host interface to connect with Android based phones, based on the MAX3421e IC.
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