Hacked Wall Clock (after Lord Vetinari)

The idea of a clock that ticks erratically while nevertheless keeping accurate time derives from Terry Pratchett’s Discworld novels. The timing mechanism for this cheap wall clock has been replaced with a MSP430G2231 microcontroller that that emits 64 randomly spaced ticks every 64 seconds. For more information, and other projects and hacks, visit the Magic Smoke blog at