OnOff SHIM does not shut down

Support
1

Hello everyone,
I am stuck at the moment and need some help with a problem that has suddenly come up.

A bit of background and hardware:
In early 2021 I developed an internet radio using a Raspberry Pi zero as a base, a rotary encoder, an LED, a HifiBerry MiniAMP and of course an OnOff SHIM.
Between 2021 and now I have assembled a total of 6 fully functional units.
The pin assignment is shown in the picture. (The blue dots are the GPIOs used by the MiniAMP)

GPIO_assignment
GPIO_assignment2166×1444 293 KB

Now I’m sitting in front of another one, but I’m having trouble with the on-off SHIM. The Raspberry boots when the button is pressed, but the system does not shut down (anymore) when the button is held down.

I have installed the OnOff SHIM using the command in the product description:
curl https://get.pimoroni.com/onoffshim | bash

I have already tried the following

  • Complete reinstallation of the system
  • Using two other On/Off SHIM boards
  • Pins soldered
  • Plug connection
  • Complete reinstall > just apt-get update & upgrade + OnOff SHIM installation
  • Removed the “#” from “daemon_active=1” in cleanshutd.conf

Like I said: Since I have already successfully installed 6 of them I suspect that some software component must have changed to break the correct function.

Does anyone have any ideas on how to isolate the problem further or even fix it?

2

I was able to isolate the problem further and found a temporary solution for myself until Pimoroni took action.
Over the years, a new Debian version has appeared in the RP Image installer, namely “Bookworm”. The OnOff SHIM is not compatible with this version!
After I downgraded to the older version “Bullseye”, everything works as usual.

Perhaps someone from Pimoroni can confirm this and tell the development team to adjust the installation script?