I become interested in Nixie tubes after I bought a Netduino and tried out the ArduiNIX. From that I decided to make my own Nixie Tube clock. My clock, besides showing the time, also shows the date, year, temperature, has an alarm, and can communicate with a PC via USART.
The clock is built on two PCB boards connected by two 10 pin IDC cables. I use stand-offs to screw the two boards together, doing that makes the clock free standing and eliminates the need to build a separate case or stand. I would have done it on one giant board but that was not feasible due to size limitations in Eagle freeware. The boards were manufactured through OSHPark.
I use four IN-17 Nixe tubes for the display. Although they are small, IN-17 tubes are cheap and easy to source through Ebay. Also I had several left over from my ArduiNIX experiment.
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