Wireless Controlled Relay

Wireless Controlled Relay

int pin = 8;

void setup(){
  Serial.begin(9600);
  pinMode(pin,OUTPUT);
  digitalWrite(pin,LOW);
}

void loop()
{
   if (Serial.available()) {
   delay(100);
   while (Serial.available() > 0) {
      
      if((Serial.read())=='1')
      {
        if(digitalRead(pin)==LOW)
        {
          digitalWrite(pin,HIGH);
          Serial.println("RELAY ON!");
        }
        else
        {
          digitalWrite(pin,LOW);
          Serial.println("RELAY OFF!");
        }
      }
    }
  }
}