Dan,
Not gonna lie, I was reading through all my past exchange with Ray and have no idea what I did to make it work. I lost my compiled code when my external drive failed and was trying to replicate this a few weeks ago for another setup but gave up.
So are you saying that all I need to do is update the “PIN_FREE_LIST” with free GPIOs and then compile and then the UI will see them as available? I just want to confirm that I understand what you are saying.