cpp

// Include the Ultrasonic library

#include <Ultrasonic.h>



// Define the pins for the ultrasonic sensor

#define TRIGGER_PIN 12

#define ECHO_PIN 11



// Define the threshold distance for collision detection (in centimeters)

#define COLLISION_THRESHOLD 10



// Initialize the ultrasonic sensor

Ultrasonic ultrasonic(TRIGGER_PIN, ECHO_PIN);



void setup() {

 Serial.begin(9600);

}



void loop() {

 // Measure the distance to the obstacle

 float distance = ultrasonic.distanceRead(CM);



 // Print the distance to the Serial monitor

 Serial.print("Distance: ");

 Serial.print(distance);

 Serial.println(" cm");



 // Check if the distance is below the collision threshold

 if (distance < COLLISION_THRESHOLD) {

 // Collision detected, trigger an alert

 Serial.println("Collision detected!");

 // You can add additional actions here, such as stopping a motor or activating a buzzer

 }



 // Wait for a short delay before taking the next measurement

 delay(1000);

}