Linear clock
By Andrew Gregory. Posted
This article was originally published as part of HackSpace magazine, which has since been incorporated into Raspberry Pi Official Magazine.
There’s a time and a place for the half-finished aesthetic. Wires everywhere, visible bits of PCB or even perfboard, and a slight roughness around the edges help give a project a homemade feel. But when you’re as good at woodwork as James Wilson is, why not go the extra mile and make your projects beautiful?
Look closer at the display: there’s something not right about it. Rather than break up the day into 24 hours, James has decided to display time as a percentage of the day that’s elapsed. Even better than that, the display actually marks the percentage of daylight that has elapsed, with the blue dot showing the middle point of the day when the sun is at its highest. That’s a lot to take in, and a lot for the electronics to take care of. James borrowed the calculations from Astronomical Algorithms, 2nd edition, by Jean Meeus, and put the whole thing in walnut and maple.
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