@firesgc I had the same problem as you, and after trying almost everything I found where was the problem. To add your user PI to GPIO group, in the module page says to run: sudo useradd -g pi gpio My RPI always replay me that GPIO group already exists… so nothing happend I solve it by running: sudo usermod -a -G gpio pi In this case pi user is added to gpio group I just restarted and it worked. Now using the following command: gpio readall I can see how the Inputs and Outputs change I hope it works also for you