Project - 3286

#define echoPin 7 // Echo Pin
#define trigPin 6 // Trigger Pin
#define motorPin 8 // Motor Pin

long duration, distance;

void setup()
{
  Serial.begin(9600);
  pinMode(motorPin, OUTPUT);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  digitalWrite(motorPin, LOW);
}

void loop()
{
  US();
}

void US() {
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  duration = pulseIn(echoPin, HIGH);
  distance = duration / 58.2;
  Serial.println(distance);
  if (distance < 100 && distance > 50) {
    //move motor
    digitalWrite(motorPin, HIGH);
    delay(500);
    digitalWrite(motorPin, LOW);
    delay(500);
  }
  else if (distance < 50) {
    //stop motor
    digitalWrite(motorPin, HIGH);
    delay(300);
    digitalWrite(motorPin, LOW);
    delay(100);
    digitalWrite(motorPin, HIGH);
    delay(300);
    digitalWrite(motorPin, LOW);
    delay(300);
  }
  else {
    digitalWrite(motorPin, LOW);
  }
  delay(50);
}