Luckily, the Arduino boards come with an internal LED connected to pin 13. It is simple to use and always there. But most times we want our own LEDs in different places of our system. We might connect something on top of the Arduino board and can no longer see the internal LED. Here, we will explore how to connect an external LED.
For this recipe, we need the following ingredients:
Follow these steps to connect an external LED to an Arduino board: