Hi,
I got a Waveshare RPi Relay Board:
And I’m trying to make it work on a RPi 3/B
I follow the steps on the /integrations/rpi_gpio/ guide but the only result I got is :
Failed to call service switch/turn_off. The GPIO channel has not been set up as an OUTPUT
Do you have any idea? Do you know I have to install some libraries?
Thanks a lot.