//github.com/dibyasn
//Toggling LEDs using millis function

// Define pin numbers for the LEDs
#define LED1_PIN 10  // Pin connected to the first LED
#define LED2_PIN 5   // Pin connected to the second LED

// Variables to store the last time the LEDs were toggled
unsigned long lastToggleTimeLED1 = 0; // Last toggle time for LED1
unsigned long lastToggleTimeLED2 = 0; // Last toggle time for LED2

// Interval times for blinking (in milliseconds)
const unsigned long blinkIntervalLED1 = 500; // Time interval for LED1 blink
const unsigned long blinkIntervalLED2 = 500; // Time interval for LED2 blink

void setup() {
  // Set the LED pins as OUTPUT
  pinMode(LED1_PIN, OUTPUT); 
  pinMode(LED2_PIN, OUTPUT); 
}

void loop() {
  // Get the current time in milliseconds since the program started
  unsigned long currentTime = millis();
  
  // Toggle LED1 if the interval has passed
  if (currentTime - lastToggleTimeLED1 >= blinkIntervalLED1) {
    lastToggleTimeLED1 = currentTime;  // Update the last toggle time for LED1
    digitalWrite(LED1_PIN, !digitalRead(LED1_PIN));  // Toggle LED1's state
  }

  // Toggle LED2 if the interval has passed
  if (currentTime - lastToggleTimeLED2 >= blinkIntervalLED2) {
    lastToggleTimeLED2 = currentTime;  // Update the last toggle time for LED2
    digitalWrite(LED2_PIN, !digitalRead(LED2_PIN));  // Toggle LED2's state
  }
}