int led=7;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(12, INPUT);
  pinMode(led, OUTPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
  int state=digitalRead(12);
  Serial.println(state);
  if(state==1){
    digitalWrite(led, HIGH);
  }
  else{
    digitalWrite(led, LOW);                                 

  }
}