void setup() {
  Serial.begin(9600);
}

void loop() {
  //int val = digitalRead(9);
  int val1 = analogRead(0);
  int val2 = analogRead(1);
  int val3 = analogRead(2);

  Serial.println("Sensor 0:");
  Serial.println(val1);

  Serial.println("Sensor 1:");
  Serial.println(val2);

  Serial.println("Sensor 2:");
  Serial.println(val3);
  delay(3000);
}