If you miss the charm of Nixie tube displays checkout this project from Jay Hamlin on Hackaday.io:
The inspiration for this project came from one of Big Clive’s YouTube videos in which he was showing low voltage LED filaments. I bought some 38mm white, 3 Volt filaments on AliExpress and soldered them together as a 7 segment digit on a prototyping board just to see what they would look like. It looked ok but I didn’t know what I would do with it. Later I bought some 20mm red filaments , their color is more red-orange which reminded me of neon. The LED Nixie tube was born!
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