A bit of background info... I got inspired by making the watch from pictures on the web. First I made a 4 tube one Wich worked with ESP32 wroom module. And a small 170V Nixie supply board. I chose the modules for ease of design however this turned out to be too bulky. I then looked into making my own processor board. And power supply. This to get rit of the bulky modules. The power supply turned out to be a tricky design so I turned to the web and found the very nice schematic by David Forbes from Cathode corner. I implemented this schematic design into the watch. The case was iterated from about 56 versions down to the one on the pictures now. The hour cutouts I got inspired by Craig Smith's watch.
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