FLASHING

int ledPin = 13;                // LED connected to digital pin 13

void setup()
{
  pinMode(ledPin, OUTPUT);     // sets the digital pin as output
}

void loop()
{
  digitalWrite(ledPin, HIGH);  // sets the LED on
  delay(1000);                 // waits for a second
  digitalWrite(ledPin, LOW);   // sets the LED off
  delay(1000);                 // waits for a second
}

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