# define IR A0
# define MO 6
void setup() {
  // put your setup code here, to run once:
  pinMode(A0, INPUT);
  pinMode(6, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(7, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  int irRead = analogRead(IR);
  Serial.println(irRead);
  digitalWrite(6, HIGH);
  digitalWrite(4, HIGH);
  digitalWrite(6, HIGH);
  digitalWrite(7, HIGH);
  digitalWrite(6, HIGH);
  digitalWrite(7, HIGH);
}
A4988