Inspired by, and derived from https://hackaday.io/project/167749-tiny-iv-21-vfd-clock
I copied the HV section from sjm4306's design.
I removed the RTC module as the assumption is that this clock will sync it's time from NTP somewhere.
All of the code and design files are tracked here: https://github.com/cinchcircuits/iv-21-clock-esp32
Please add bugs there.
I decided to load the esp32c3 up with circuit python to make myself learn something about it.
As such, all of the code is in circuitpython.
Saw your project at Hackaday.com. Love, love, love VFD and low intensity gas discharge devices of any sort.
Your project referenced the high voltage section of sjm4306's project, using OPEN LOOP PWM DIGITAL OUTPUT TO RUN A BOOST CONVERTER FOR THE HIGH VOLTAGE VFD and when I looked at it I was SO HAPPY!
Woonta found it without your project!