Arduino Pin Configuration. The code makes the digital pin 13 output and toggles it high and low. On the arduino when the digital pins are configured as output they are set to 0 or 5 volts.
When on they are in a high voltage state of 5v and when off they are in a low voltage state of 0v. Sets the digital pin 13 off delay 1000. Sets the digital pin 13 on delay 1000.
The pins 4 6 8 9 10 and 12 are used as a digital input or output for the arduino board.
When on they are in a high voltage state of 5v and when off they are in a low voltage state of 0v. Sets the digital pin 13 as output void loop digitalwrite 13 high. On the arduino when the digital pins are configured as output they are set to 0 or 5 volts. Configurepin a pin mode sets the specified pin on the arduino hardware in connection a to the specified mode.