It uses a total of thirty-six 555 timers and it does have the option of ... Luckily there’s a huge eagle schematic available with his project writeup so that you can follow along and really ...

If they use an Arduino, it should have been an ATtiny. And of course, if an ATtiny was used, there should have simply been a 555 timer. This time, however, [Tim] decided to actually show how this ...