Ultrasonic Distance Sensor With Arduino

 

Ultrasonic Distance Sensor (Advanced)

Objective: Use an ultrasonic sensor to measure the distance and display it on a serial monitor or LCD.

• Components: Arduino board, ultrasonic sensor (HC-SR04), jumper wires.
• Steps:
1. Connect the ultrasonic sensor to the Arduino.
2. Write the code to calculate and display the distance in centimeters.

Circuit:-

Code Sample:

const int trigPin = 9;
const int echoPin = 10;
long duration;
int distance;

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

void loop() {
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  
  duration = pulseIn(echoPin, HIGH);
  distance = duration * 0.0344 / 2;  // Calculate distance in cm
  
  Serial.print("Distance: ");
  Serial.print(distance);
  Serial.println(" cm");
  
  delay(1000);
}