This project is made with the help of others, they reverse engineered the signals on the board. I'm working on collating all the available information and writing the software for it.

I found that the ROP bit is on for the original unit so the original firmware cannot be read, I erased my own unit and started to write my own firmware. As it is the first time I'm doing it on a non-Arduino environment it's taking longer and it's the first time I'm using an STM8 chip so I'm also learning on the way the peculiarities of that unit.

So far I managed to get the input sense working and now I'm working on getting the output control working with PWM. I got PWM to work on the STM8 today and will find how to turn that into a proper voltage and current control soon enough.