#define TRIG1 6 // Trigger pin for Sensor 1
#define ECHO1 7 // Echo pin for Sensor 1
#define TRIG2 8 // Trigger pin for Sensor 2
#define ECHO2 9 // Echo pin for Sensor 2
#define LED1 10 // LED for Sensor 1
#define LED2 11 // LED for Sensor 2
#define DETECTION_DISTANCE 30 // Distance threshold in cm
void setup() {
pinMode(TRIG1, OUTPUT);
pinMode(ECHO1, INPUT);
pinMode(TRIG2, OUTPUT);
pinMode(ECHO2, INPUT);
pinMode(LED1, OUTPUT);
pinMode(LED2, OUTPUT);
Serial.begin(9600);
}
void loop() {
int distance1 = getDistance(TRIG1, ECHO1);
int distance2 = getDistance(TRIG2, ECHO2);
Serial.print("Sensor 1 Distance: ");
Serial.print(distance1);
Serial.print(" cm, Sensor 2 Distance: ");
Serial.print(distance2);
Serial.println(" cm");
// Turn LED1 ON if Sensor 1 detects an object
if (distance1 > 0 && distance1 <= DETECTION_DISTANCE) {
digitalWrite(LED1, HIGH);
} else {
digitalWrite(LED1, LOW);
}
// Turn LED2 ON if Sensor 2 detects an object
if (distance2 > 0 && distance2 <= DETECTION_DISTANCE) {
digitalWrite(LED2, HIGH);
} else {
digitalWrite(LED2, LOW);
}
delay(500);
}
// Function to measure distance using an ultrasonic sensor
int getDistance(int trigPin, int echoPin) {
long duration;
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH);
int distance = duration * 0.034 / 2; // Convert to cm
return distance;
}
