Jeff Epler's blog

22 June 2011, 20:19 UTC

Towards my GPS LED Light Clock


A few years ago, I made a CCFL light clock using an Arduino with a custom shield containing a transformer (to get a reliable 60Hz timebase) and a triac (for solid-state switching of the lamp). By having a simple 7-day alarm calendar (set at compile time), the clock seldom requires interaction except for the reading lamp function.

However, the design has two main problems:

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