(Fake) Nixie Tube Display on a M5Stack
For a video see https://twitter.com/drayde/status/995242200631054336
Original Nixie tube images © 2007-08 Čestmír Hýbl cestmir.hybl@nustep.net
Taken from http://cestmir.freeside.sk/projects/dhtml-nixie-display/
Free for non-commercial use only