LED Blink

Solving Approach

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Code

// LED Blink - Arduino UNO
const int LED_PIN = 13; // change to 8 if you wire there

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

void loop() {
  digitalWrite(LED_PIN, HIGH); // LED on
  delay(400);                 // 1000 ms = 1 second
  digitalWrite(LED_PIN, LOW);  // LED off
  delay(800);
}

Output

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