int ir=7;
int x;
void setup() {
  Serial.begin(11500);
  pinMode(7, INPUT);
  pinMode(8, OUTPUT);
  
}

void loop() {
 x=digitalRead(ir);
 Serial.println(x);
 delay(300);
 if(x==1)
 {
  digitalWrite(8, LOW);
 }
 else
 {
  digitalWrite(8, HIGH);
 }

}