LED Blink

Solving Approach

How do you plan to solve it?

Set pin to OUTPUT. In a loop, turn it HIGH, wait 400ms, turn it LOW, wait 800ms. Use a ~300Ω resistor to get ~10mA current.

Code

void setup() {
  pinMode(3, OUTPUT);
}

void loop() {
  digitalWrite(3, HIGH);
  delay(400);
  digitalWrite(3, LOW);
  delay(800);

}

Output

Video

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• https://wokwi.com/projects/442607852185230337

Photo of Output

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