The Nixie tubes I will be using will be salvaged from an old 4 digit voltmeter. So far I’ve managed to Identify the 74141 chips that converter a binary signal to drive a Nixie tubes elements. I’ve also managed to find data on the tubes themselves. However there is one tube that dosen’t seem to be working. This requires testing first as it will determine if I need to source another tube.

I Also need to determine what method of timekeeping I’m going to use and what power supply design to power the tubes.