I built another thing. A nixie tube thermometer that uses IR to change what the temperature is measured in. Made a video but it doesn't show much detail of the build itself
Nixie thermometer – two is better than one! – lucadentella.it
5-tube Nixie Thermometer V2 assembled and Ready to Use With - Etsy
EN NixieTherm RGB
5V USB Powered-ARDUINO DIPKIT-NIXIE Thermometer 4Tube-Open Source-NIXIE TUBE ERA | eBay