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IN-1 nixie tube - fuzzy digits when driving with TPIC6B595
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intabits:

--- Quote from: 2shy on February 06, 2020, 04:25:53 pm ---... it turned out that some nixie pins didn't make any contact with PCB pads 
...Next time I'll probably replace TPIC6B595 with something more suitable, as using this IC for driving nixie tubes is not the best engineering practice.

--- End quote ---

I only soldered one or 2 pins per tube on mine, but they are a tight fit into plated through holes, and seem to make good contact.

I'm using TPIC6B595 chips with IN-1A tubes and it works pretty well:-
https://youtu.be/rQEzPThgjuU

The tubes count at ever increasing speeds, with the neon bulbs between them also showing the count in binary, after some time doing that, it switches to clock mode showing MM DD;HH:MM:SS.

In case you find it useful, my arduino code for the demo in the video above.
https://pastebin.com/RjTw21z9

2shy:

--- Quote ---I only soldered one or 2 pins per tube on mine, but they are a tight fit into plated through holes, and seem to make good contact.

I'm using TPIC6B595 chips with IN-1A tubes and it works pretty well:-
https://youtu.be/rQEzPThgjuU

The tubes count at ever increasing speeds, with the neon bulbs between them also showing the count in binary, after some time doing that, it switches to clock mode showing MM DD;HH:MM:SS.

In case you find it useful, my arduino code for the demo in the video above.
https://pastebin.com/RjTw21z9
--- End quote ---

I like the modularity of your design, I think I've seen it before on YouTube.
Thanks for the code, I'll look at it, though in this particular case I write for STM32.
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