Switch of the power supply with shutdown.sh?

    Hi,

    I want to cut the power lines with a relay on my raspberry pi. I could switch the relay with a gpio tools script. But ask me if is safe to put the script in /storage/.config/shutdown.sh. I don't know if the devices are already proper unmounted?

    If not is there a alternative place, behind the unmount commands?

    TIA Jürgen

    Are you trying to turn off the backlight of an lcd screen?I guess it would be easier and cleaner to just cut the power to the screen using relay/transistor then to the pi altogether,doesn't look like a neat shutdown to me or try the "Pi Supply Switch"

    Mario77, no not only a backlight. I want to turn off the power supply of the pi. If I turn kodi off the tv will automatic power down. But some times I forget turn off the pi supply.

    I use also a relais (gpio) which turns the loudspeaker/amplifier delayed on (startup.sh) and off (shutdown.sh) to avoid the switch-on pulse. Now I want a same method to switch the power of the pi supply of after the partitions would be clean. (Otherwise I need a hardware cuircuit for delaying like a car interior light or a toilet fan.)