Third Eye For Blinds

/* This project describes how to make an ultrasonic goggle for blind  using 
LED, Ultasonic Sensor(HC-SR04) and a buzzer.*/ 

//Firstly the connections of ultrasonic Sensor1.Connect +5v and GND normally and trigger pin to 12 & echo pin to 13. 
//Firstly the connections of ultrasonic Sensor2.Connect +5v and GND normally and trigger pin to 11 & echo pin to 10. 
#define trigPin 12 
#define echoPin 13
#define trigPin1 11
#define echoPin1 10
int VML = 8; // Connect vibrating motor left pin to 8
int VMR= 6;  //Connect vibrating motor right pin to 6
int duration, distance; //to measure the distance and time taken 

void setup() {
        Serial.begin (9600); 
        //Define the output and input objects(devices)
        pinMode(trigPin, OUTPUT); 
        pinMode(echoPin, INPUT);
        pinMode(trigPin1, OUTPUT); 
        pinMode(echoPin1, INPUT);
        pinMode(VML, OUTPUT);//vibrating motor left
        pinMode(VMR, OUTPUT);//vibrating motor right
}

void loop() {

    digitalWrite(trigPin, HIGH); //for first ultrasonic
    delayMicroseconds(10);
    digitalWrite(trigPin, LOW);
    duration = pulseIn(echoPin, HIGH);
    distance = (duration/2) / 29.1;

    //when distance is greater than or equal to 100 OR less than or equal to 0
  if (distance >= 100 || distance <= 0) //you can change distance by reducing or increasing the left value
        {
        Serial.println("no object detected");
        digitalWrite(VML,LOW);
      
        }
  else {
        Serial.println("object detected \n");
        Serial.print("distance= ");              
        Serial.print(distance);        //prints the distance if it is between the range 0 to 200
        digitalWrite(VML,HIGH);  //turns vml on
  }
       digitalWrite(trigPin1, HIGH); //for second ultrasonic
    delayMicroseconds(10);
    digitalWrite(trigPin1, LOW);
    duration = pulseIn(echoPin1, HIGH);
    distance = (duration/2) / 29.1;
    if (distance >= 100 || distance <= 0) 
        {
        Serial.println("no object detected");
        digitalWrite(VMR,LOW);
      
        }
  else {
        Serial.println("object detected \n");
        Serial.print("distance= ");              
        Serial.print(distance);        //prints the distance if it is between the range 0 to 100
        digitalWrite(VMR,HIGH);       //turns vmr on
  }
}