this project is not yet finished, as I await the arrival of the PCBs
and parts from DigiKey, then having to assemble the board and program
the uC. once that is complete, I will write about it on my website, as
I have with the first version.

this one is based on a flyback power supply with custom transformer,
as in
https://tilde.town/~vivienne/journal/2025-08-29-MC34063-flyback.html .

![render of the populated PCB](rendered.png)