The advantage of a radio-controlled clock that receives the time signal from WWVB is that you never have to set it again. Whether it’s a little digital job on your desk, or some big analog wall ...

Posted in clock hacks Tagged 7221, arduino, arduino mega, Arduino Uno, clock, dcf77, DCF77 Superfilter, maxim, PTB, radio clock ← Bees In TVs Modern DIY FM Radio → ...

You'll need an Arduino, of course, and you'll also need a pair of laser pointers, a few servos and motors to make the lasers move as time passes, and of course, the IKEA BLANDA salad bowl ...