I am a bit puzzled , I do not like to go into a forum that door but I did not have much choice ...
I am a very motivated beginner and now I 'm stuck in the second part of this wonderful project

I respected the recommendations of Wermy about the LC teensy setting but not yet installed retropie , I wondered how I could test my work (please be very simplistically

If ever these were to be defective , is it possible for the teensy to Reset ?
Thank you for your answers
ZeV