LED Blink

Solving Approach

Using Arduino Uno on Wokwi, I started with inserting a LED light and the resistor, then I connected GND to the LED, LED to the resistor and lastly the resistor to the GPIO pin 4.

Code

void setup() {
pinMode(4,OUTPUT);
}

void loop() {
digitalWrite(4,HIGH);
delay(400);
digitalWrite(4,LOW);
delay(800);

}

Output

Video

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https://wokwi.com/projects/443537936500297729

Photo of Output

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