Ffirst, thank you all for the incredible help that there is here....and in particular to HELDER, 144TECH, KUBINO, CAMBLE, VETERANGAMER, and all the others that I forget for the moment.
I do not have much time to summarize now but I already put some pictures because I arrive at the end.
I will complete the topic at the end of GBZ.
Thanks again to all.
SpoilerShow
Like everyone else, I have power problems when I add the screen to the circuit.
I found on the internet, a tiny supercaps (I took one of 470mF and 1F):
SpoilerShow
SpoilerShow