DS1302 Rotating LED Clock Module Housing (Modular... Sort of!)

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Note: If you choose to make one for yourself, then make sure you buy the three-button, SMD LED type. Otherwise, it probably won't fit the case!
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I picked up a pre-assembled DS1302 (or, "DS just after lunch" as I call it!) clock module from eBay for a trivial sum. I chose this specific version because it used tiny SMD LEDs, which I felt were less clunky-looking than the traditional type.

I know it's cheating, but I went for the pre-assembled unit because, between