Arduino Laser Security System with Buzzer and LED | Example Code | English Subtitle

Arduino Laser Security System with Buzzer and LED | Example Code | English Subtitle
Code : code is on the comment below.
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// Pin configurations
const int transmitterPin = 10; // Pin connected to the laser transmitter
const int receiverPin = 11; // Pin connected to the receiver
const int ledPin = LED_BUILTIN; // Pin connected to the LED

void setup() {
// Initialize serial communication
Serial.begin(9600);

// Set transmitter pin as output
pinMode(transmitterPin, OUTPUT);

// Set receiver pin as input
pinMode(receiverPin, INPUT);

// Set LED pin as output
pinMode(ledPin, OUTPUT);
}

void loop() {
// Transmit laser signal
digitalWrite(transmitterPin, HIGH);
delay(10); // Adjust delay as needed

// Check receiver
int receiverState = digitalRead(receiverPin);

// If receiver receives the laser, turn on LED, otherwise turn it off
if (receiverState == HIGH) {
Serial.println("Laser detected!");
digitalWrite(ledPin, HIGH); // Turn on LED
} else {
Serial.println("No laser detected.");
digitalWrite(ledPin, LOW); // Turn off LED
}

// Delay before next loop iteration
delay(1000); // Adjust delay as needed
}