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1void setup() {2pinMode(LED_BUILTIN, OUTPUT);3}45void loop() {6digitalWrite(LED_BUILTIN, HIGH);7delay(1000);8digitalWrite(LED_BUILTIN, LOW);9delay(1000);10}
Your code looks correct! This is a classic LED blink sketch. The LED will turn on for 1 second, then off for 1 second, repeating forever.
No external components needed. The built-in LED is connected to pin 13 on most Arduino boards. Upload and you should see it blinking!
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