Full assembly of a typical eBay digital clock kit with case.
This is a nice kit to build. It's a very good example of circuitry that can be powered by a common 5V USB power supply, and even has a proper dedicated clock chip with battery backup.
There's a slight blip in the video where the power connector is soldered on, because I didn't realise that I'd reached a file size/video length limit and the camera stopped and restarted automatically.
Here's a general purpose link to find various similar clock kits on eBay:-
http://www.ebay.com/sch/i.html?_from=...

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http://www.bigclive.com/coffee.htm