@Jdanster said in Raspberry PI Retropie 4.8, first setting, buttons mapping issue (no encoder):
None of the buttons is recognized, any idea why?
Just because you wired the buttons doesn't mean they will automatically work - you'd need a driver to implement an input device based on the GPIO inputs. Something like https://github.com/mholgatem/GPIOnext or https://github.com/recalbox/mk_arcade_joystick_rpi (which is included in RetroPie, in the drivers' section).
If you're just starting up and have limited time and beginner computer skills, I'd recommend you get an USB encoder and use it, instead of wiring the buttons to the GPIOs directly.