No audio after installing fan shim

Support
1

Am running Retropie 4.7.1 on my Raspberry Pi 4 for the Picade which runs fine with audio and all but the moment I install the fan shim, all audio is lost. Have tried the various troubleshooting steps to common audio issues but to no avail.

Below are the command lines I used to install the fan shim:
git clone https://github.com/pimoroni/fanshim-python
cd fanshim-python
sudo ./install.sh

cd examples
sudo ./install-service.sh —on-threshold 65 —off-threshold 55 —delay 2

Any ideas?

2

It’s likely a GPIO pin conflict. GPIO 18 (Pin 12) is used for Fan Control on the Fan Shim. It’s also the i2s clock signal for the sound on the Picade X Hat.
Fan SHIM at Raspberry Pi GPIO Pinout
Picade X HAT at Raspberry Pi GPIO Pinout

3

Thanks. Can the conflict be resolved or if not, does it mean that the fan shim can’t be used with the Picade Hat?

4

If you don’t install the fan shim software the sound will likely work. The clock signal is going to mess with the fan though. I would say no, not with out modifying the fan shim.