For years, the humble Arduino microcontroller—a cheap, open source, midnight-blue circuit board emblazoned with a tiny white infinity loop—has been a favorite tool of the DIY electronics crowd.

[Niazangels] went with Dynamixel closed loop ... his Infinity Mirror Clock. This clock tells time with the help of some WS2812B RGB LED. [Dushyant] debugged the clock with a regular Arduino ...