[Brian] is using an Arduino to control multiple servo motors. This is nothing new and has been happening since the earliest days of Arduino. But rather than develop a project and share it, [Brian ...

Each servo motor requires a PWM signal to control its position, and with 28 servos needed for the clock, the Arduino Mega’s capacity was quickly exceeded.

With just access to a printer, a few cheap-as-chips servo motors, an Arduino, and some nuts and bolts, you could be hacking together robot walkers within a few hours of starting!