I like that.
Want to share??
Certainly...
It uses Nixie tubes
http://en.wikipedia.org/wiki/Nixie_tubes. A totally obsolete display device from the days before LCDs, LEDs, etc. About the only thing I can remember them being used in is petrol pumps when I first started driving.
Mrs. KW saw one a couple of years ago and took a shine to it so I bought some tubes and they've been languishing in my junk box for a while. Anyway, you can get the tubes and kits to build clocks on ebay but I decided to roll my own circuitry to drive them.
Worst part was soldering up all the connecting wires. 10 individual segments in each tube to wire up, one for each digit 0-9
Started to wish I'd just bought a kit with a printed circuit board. Because they are effectively little neon bulbs they need a supply of 185v dc so there's a little converter to knock up the 12 volts from a mains adaptor to power them and there's a microcontroller in there to keep the time and drive the displays.
Kevin