This clock is designed to backup my Master Clock should it fail or need maintenance and is portable with battery backup. It can also be used as a stand alone clock as well.
This clock uses an Arduino 328 Microprocessor to decode Time from the DCF77 "Atomic" Clock in Mainflingen near Frankfurt Germany.
Time is displayed on a skeleton clock and a Blue 4x20 LCD display. Clock pulses to drive slave dials are monitored on an LED panel.
3 x 1.5volt AA cells provide battery backup when disconnected from the mains.
The main board has a USB to UART connector so the clock software can be updated from a PC or even a Mac.
Full details including code on the Clocks Web page see link.
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