It is a pretty common first project to use an Arduino (or similar) to blink an LED. Which, of course, brings taunts of: you could have used a 555! You can, of course, also use any sort of ...

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 ...

But what about using an SBC like the Raspberry Pi to build codes for your Arduino ... in the Console output, and the Arduino ...