30.04.2020, 21:51
(Dieser Beitrag wurde zuletzt bearbeitet: 30.04.2020, 21:56 von harryberlin.)
gpio23 is for relay control. if the screen switches from pi or bmw screen to black screen, so the relay is working. but the rearcam signal has a problem.
option 1: power for rearcam is bad
option 2: rearcam video signal is bad
option 1: power for rearcam is bad
option 2: rearcam video signal is bad