As a perfect example, these LED “blinking eyes” were created by ... Thanks to the pseudorandom number generator in the Arduino code, the “eyes” even have a bit of variability to them ...

In this article I will add some simple Arduino LED projects starting with basic ones like how to turn on an LED, blinking, and more. Every step will have the code, the schematic, photos of the project ...

Blink does one thing — it blinks a built-in LED on the Arduino. There's a description of the sample in the comment at the top of the editor window and online. In code, comments are notes ...