Hi Vlad, you are clearly a better electronics expert than I am so perhaps you can help.
I received my cheap eBay CHP-86B panel from eBay today and have all the pushbuttons and lights working. However I am not sure how the encoders work. Here is a picture. Do you have any thoughts?
They seem to be connected to the PCB on the bottom with 8 pins. Inside there is some sort of wheel, which passes between the black components on the board I guess blocking a type of signal passing between them?
http://prntscr.com/vlv2fx
Update: I managed to find the manufacturer and emailed them who said that it is most like this component. This looks promising, Vlad no?
http://prntscr.com/vmk6i8
https://www.ttelectronics.com/TTElectronics/media/ProductFiles/Optoelectronics/Datasheets/OPB822-826.pdf
If I can power the IR LEDs on the one side, then the other side should give SimVim the normal encoder signal it needs..... I think?