int tiltPin = 2;
int tiltVal;
int redPin = 7;
int greenPin = 6;

int dur = 250;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(tiltPin, INPUT);
  pinMode(redPin, OUTPUT);
  pinMode(greenPin, OUTPUT);
  digitalWrite(tiltPin, HIGH);
}

void loop() {
  tiltVal = digitalRead(tiltPin);
  if(tiltVal == 0){
    digitalWrite(greenPin, HIGH);
    digitalWrite(redPin, LOW);
  }
  if(tiltVal == 1){
    digitalWrite(greenPin, LOW);
    digitalWrite(redPin, HIGH);
  }
}