MEGA Sensor Shield V1.1

Description

* 54 digital I/o port extension (48 servo interface) and power;
* 16 analog I/o interface and power;
* a digital port terminal;
* Digital port external power supply & on-board power switch;
* The ISP download interface
* 3 external serial port interface
* Xbee/APC/Bluetooh Bee bluetooth wireless data
transmission interface;
* IIC/I2C/TWI interface;
* 3.3V output port;
* The SD card interface module;
* Three serial interface;
* L(PIN13) indicator lights.