/*
  Blink
  Turns an LED on for one second, then off for one second, repeatedly.

  This example code is in the public domain.

  https://www.arduino.cc/en/Tutorial/BuiltInExamples/Blink
*/

// the setup function runs once when you press reset or power the board
void setup() {
  // initialize digital pin LED_BUILTIN as an output.
  pinMode(D0, OUTPUT);
  pinMode(D7, OUTPUT);
  pinMode(D6, OUTPUT);
}

// the loop function runs over and over again forever
void loop() {
  digitalWrite(D0, HIGH);  // turn the LED on (HIGH is the voltage level)
  delay(1000);                      // wait for a second
  digitalWrite(D0, LOW);   // turn the LED off by making the voltage LOW
  delay(1000);                      // wait for a second

  digitalWrite(D7, HIGH);  // turn the LED on (HIGH is the voltage level)
  delay(1000);                      // wait for a second
  digitalWrite(D7, LOW);   // turn the LED off by making the voltage LOW
  delay(1000);                      // wait for a second

  digitalWrite(D6, HIGH);  // turn the LED on (HIGH is the voltage level)
  delay(1000);                      // wait for a second
  digitalWrite(D6, LOW);   // turn the LED off by making the voltage LOW
  delay(1000);                      // wait for a second
}