I'm kind of maniac, if it comes to the VFD displays. I've several instruments in my lab with VFD.
Even I collected many various versions with the thought, once I'll build something from it. Actually my first acquisitions were VFD modules, what already have all of the power supplies, so I not need to know, how to power, how to drive them.
On the other side, I always wanted to know, how VFD displays are working, how they need to be driven.
This story begins 8 month ago, just the half written article was put asside.
Then I seen this nice bare VFD so cheep, I couldn't resist. Bought them and my learning journey begins.
...but I had a feeling, I may did something wrong, so I broke the design into pieces, ordered the power supply boards separately, so I can test it, before send the whole module to manufacturing.
The git repo of the design is here:
To be continue..