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Just ran across this post on CiboMahto’s blog detailing how to control an inexpensive analog clock mechanism with an Arduino.

The mechanical bit is quite simple. The clock functions in a similar fashion to a stepper motor, in the sense that you charge an electric coil to get the mechanical bit to move forward a precise amount. In this case, each firing moves the second hand one second position forward (and makes the familiar tick noise). To ‘fire’ the electric coil, you simply put a voltage across it. The only complicated bit is that you actually have to reverse this voltage to advance the clock to the next step.

Making a ‘totally crazy’ slow/fast/backwards clock could be a great way for newcomers to get their feet wet with microcontrollers. And for those feeling a bit less wacky, Info for accurate timely control is also provided on the project page.

Collin Cunningham

Born, drew a lot, made video, made music on 4-track, then computer, more songwriting, met future wife, went to art school for video major, made websites, toured in a band, worked as web media tech, discovered electronics, taught myself electronics, blogged about DIY electronics, made web videos about electronics and made music for them … and I still do!


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