Features: Support RS485 Support Xbee (Xbee pro) Support Bluetooth Support APC220 Support SD card read/write
1. extension of 14 digital IO ports (12 servo interface) and power; 2.6 analog IO ports and power; 3.1 digital external power port terminal; 4. Digital-port external power supply and an onboard power supply automatic switching; 5.1 External power input terminal and an input pin; 6.RS485 interface; 7. reset button; 8.xbee/Bluetooh Bee Bluetooth wireless data transmission interface; 9.APC220/Bluetooh V3 Bluetooth wireless data transmission interface; 10.IIC/I2C/TWI interface; 11.3.3V output port; 12•SD card module interface