We have another amazin watch project this week. Pakue user
psoted on instructables his work. He says that the whole project started a while back with an hackaday article from 2014 in which [Johngineer] build the 'ChronodeVFD', a wristwatch made from an old soviet vacuum fluorescent display. It kind of triggered the 'shut up and take my money' reflex in him, but as it wasn't for sale and he didn't had any design details available, he quickly had to scrap that.
So he explains what is an VFD and How Does It Work, the tests he made in order to make this project, he shows us the Circuit Design and PCB Layout and final assembly and some Troubleshooting.