eBay

Support Xbee (Xbee pro)
Support Bluetooth
Support APC220
Support SD card read/write

1.extensionof 14digitalIOports(12servointerface)and power;
2.6analogIOportsand power;
3.1digitalexternal powerportterminal;
4.Digital-portexternalpower supply andan onboardpower supply automaticswitching;
5.1External power inputterminalandaninputpin;
6.RS485interface;
7.reset button;
8.xbee/Bluetooh BeeBluetoothwireless data transmissioninterface;
9.APC220/Bluetooh V3Bluetooth wirelessdata transmissioninterface;
10.IIC/I2C/TWIinterface;
11.3.3Voutput port;

Sample Code

RS485 Transmit Data

int EN = 2; //RS485 has a enable/disable pin to transmit or receive data. Digital
Pin 2 = Rx/Tx 'Enable'; High to Transmit, Low to Receive

void setup()
{
pinMode(EN, OUTPUT);
Serial.begin(19200);
}

void loop()
{
// send data
digitalWrite(EN, HIGH);//Enable data transmit
Serial.print('A');
delay(1000);
}

RS485 Receiving Data

int ledPin = 13;
int EN = 2;
int val;

void setup()
{
pinMode(ledPin, OUTPUT);
pinMode(EN, OUTPUT);
Serial.begin(19200);
}

void loop()
{
// receive data
digitalWrite(EN, LOW);//Enable Receiving Data
val = Serial.read();
if (-1 != val) {
if ('A' == val) {
digitalWrite(ledPin, HIGH);
delay(500);
digitalWrite(ledPin, LOW);
delay(500);
}
}

Package Included:
1 x Xbee/Bluetooth/SRS485 RS485/APC220 I/O Sensor Expansion Shield V5.0