Smart stick for blind man

ARDUINO CODING:-  

(JUST COPY AND PAST ON ARDUINO SOFTWARE)

// defines pins numbers
const int trigPin = 8;
const int echoPin = 10;
const int buzzer = 7;
const int ledPin =5;


// defines variables
long duration;
int distance;
int safetyDistance;


void setup() {
pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
pinMode(echoPin, INPUT); // Sets the echoPin as an Input
pinMode(buzzer, OUTPUT);
pinMode(ledPin, OUTPUT);
Serial.begin(9600); // Starts the serial communication
}


void loop() {
// Clears the trigPin
digitalWrite(trigPin, LOW);
delayMicroseconds(2);

// Sets the trigPin on HIGH state for 10 micro seconds
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);

// Reads the echoPin, returns the sound wave travel time in microseconds
duration = pulseIn(echoPin, HIGH);

// Calculating the distance
distance= duration*0.034/2;

safetyDistance = distance;


if (safetyDistance <= 55){
  digitalWrite(ledPin, HIGH);
  digitalWrite(buzzer, HIGH);
  delay (100);
  digitalWrite(buzzer, LOW);
  delay (100);
 
}
else{
  digitalWrite(buzzer, LOW);
  digitalWrite(ledPin, LOW);
}


// Prints the distance on the Serial Monitor
Serial.print("Distance: ");
Serial.println(distance);

}

CIRCUIT DIAGRAM:-

THANKS FOR WATCHING