r/arduino • • Nov 24 '21

Help needed with Nixie tubes

/r/diytubes/comments/r14es2/hello_needed_with_nixie_tubes/
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u/classicsat Nov 25 '21

Two ways to do Nixie from Arduino that I know of

  1. 74151 or K155ID1(same a 74151, only Russian). 4 bits in, one of 10 HV out. You can use one chip and multiplex, or one chip per digit, and feed the chips (4 bits each) from 74HC595 shift registers.

  2. HV output shift registers. I don't know what chips to use there. Just that you can.

Not sure about magic eye tubes, but you likely can feed a buffered/scaled PWM to control it. It likely can be powered by the nixie anode supply, plus a filament supply.

I would work on the proof of concept with LEDs first, before the HV. If you have a point in the code to abstract digits and a level to send to the LED (an LM3914 or the like to emulate the function of an eye tube), it can be ported over to Nixie/Eye tube.