I am trying to turn off the SenseHat leds when the device reboots/shutsdown etc. The reason is that the leds stay at their last pattern so I cannot visually tell if the machine has actually shutdown. (wouldn't it be nice if 'shutdown' meant 'turn-off')
I have tried a lot of variants of the systemd configuration such as Run a script at shutdown on Raspbian but nothing actually works. I have a tiny python program that puts a big X on the display - this works and a script that calls this - also works.
I dont know how to tell if the service actually fires Does anybody know when the ability to set these leds actually stops. ie I am not needing the file system which I know gets remounted as part of shutdown etc
the latest contents of /etc/systemd/system/SenseBigX.service are
[Unit]
Description=SenseBigX
DefaultDependencies=no
[Service]
Type=oneshot
RemainAfterExit=true
ExecStop=/usr/local/bin/SenseBigX
[Install]
WantedBy=multi-user.target
Thanks in advance JC
