/*
  Activity 3: Blinking Control
  Purpose: Make the LED blink with precise 1-second intervals
  500ms LED ON + 500ms LED OFF = 1 second cycle
  Perfect for visual feedback in projects
  
  Components:
  - ESP32 Dev Module
  - LED connected to GPIO 18
*/

#define LED 18

void setup() {
  pinMode(LED, OUTPUT);
}

void loop() {
  digitalWrite(LED, HIGH);  // LED ON
  delay(500);               // Wait 500ms
  digitalWrite(LED, LOW);   // LED OFF
  delay(500);               // Wait 500ms
}