void setup() {
  pinMode(8, INPUT);
 pinMode(A0, INPUT);
 Serial.begin(9600);
 pinMode(3,OUTPUT);
}

void loop() {
  Serial.print(digitalRead(8));
 Serial.print("   ");
  Serial.println(analogRead(A0));


  if(digitalRead(8)==0){
    digitalWrite(3,HIGH);
    delay(1000);
    analogWrite(3,180);
    delay(500);
    analogWrite(3,90);
    delay(500);
    

  }
  else{
digitalWrite(3,LOW);

  }



}