LASER ki लक्ष्मण रेखा -ESP32 | LASER DIODE | BUZZER | LDR Full Code

LASER ki लक्ष्मण रेखा -ESP32 | LASER DIODE | BUZZER | LDR

Full Code with Connections:

// Define pin numbers

const int ldrPin = 34;     // LDR connected to GPIO 34 (Analog input)

const int buzzerPin = 12;  // Buzzer connected to GPIO 12 (D12)

void setup() {

  // Initialize serial communication for debugging

  Serial.begin(115200);

  // Set buzzer pin as output

  pinMode(buzzerPin, OUTPUT);

}

void loop() {

  // Read the voltage across the LDR (assuming it's connected in a voltage divider configuration)

  int ldrValue = analogRead(ldrPin);

  // Print LDR value (for debugging)

  Serial.print("LDR value: ");

  Serial.println(ldrValue);

  // Define a threshold value to determine when to activate the buzzer

  int threshold = 4000; // Adjust this threshold based on your LDR and lighting conditions

  // Control the buzzer based on LDR value

  if (ldrValue < threshold) {

    // Light intensity is low (LDR value is high), turn off the buzzer

    digitalWrite(buzzerPin, LOW);

  } else {

    // Light intensity is high (LDR value is low), turn on the buzzer

    digitalWrite(buzzerPin, HIGH);

  }

  // Add a short delay to avoid rapid changes

  delay(50);

}