VFD with Teensy 4.1 + HV5812

pentonic

New member
Hi all,

In my current project I would like to control a Vacuum Fluorescent Display (VFD) with my Teensy 4.1.
I have made a wiring plan but since I don't have much experience in electronics I would appreciate your feedback.

Main question:
- Would this setup work? (see image attached)
- Power supply: 5V 2A Adapter​
- Filament power: step down module 5V to 2.5-3V​
- Grid/segment power: step up module 5V to 12-30V​
- Logic level converter 3.3 to 5V: SN74AHCT125N​
- VFD driver: HV5812P​

Bonus question:
- Driving the filament with AC instead of DC would be much better, but I'm not sure what the easiest way would be to accomplish that. Any suggestions would be really appreciated.

VFD_teensy_wiring.jpg

Thanks!
PS. In my current project I'm trying to turn an old calculator into a drum-synth. The synth part is working, now I'm focussing on the display. :)
 
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