/*Write a program to interface Relay and Bluetooth module
 to switch on AC load (5W LED bulb, table lamp, etc) 
 connected to relay if 1 is passed through Bluetooth 
 and switch off the AC Load if 0 is send.*/
char data=0;
int relay=8;
void setup() {
  Serial.begin(9600);
  pinMode(relay, OUTPUT);
  // put your setup code here, to run once:

}

void loop() {
  if(Serial.available()>0){
    data=Serial.read();
    Serial.print(data);
    Serial.print("\n");
    if(data=='1')
    digitalWrite(relay, HIGH);
    else if(data=='0')
    digitalWrite(relay, LOW);

  }  // put your main code here, to run repeatedly:
}