const int trigPin = 9; 
const int echoPin = 10;  

void setup() {
  Serial.begin(9600);
  pinMode(trigPin, OUTPUT);  
  pinMode(echoPin, INPUT);
  pinMode(6, OUTPUT);   
  pinMode(7, OUTPUT); 
}

void loop() {
  long duration, distance;
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  duration = pulseIn(echoPin, HIGH);
  distance = (duration / 2) * 0.0344; 
  if (distance<100){
 Serial.print("Distancenear: ");
  Serial.print(distance);
  Serial.println(" cm");
  digitalWrite(6, HIGH);
  digitalWrite(7, LOW);  }
  else {Serial.print("Distancefar: ");
  Serial.print(distance);
  Serial.println(" cm");
   digitalWrite(7, HIGH);
  digitalWrite(6, LOW);
   }
  delay(1000); }