Hi, I am sort of new to Volumio and need a little help with this:
I have Khadas Tone Board DAC connected to my RPI 4B with Volumio via USB. This DAC sounds great but sends a loud pop into the speakers when it is turned ON or turned OFF. I got around the Turn-ON pop when starting the RPI by using external switch triggered by GPIO pin on startup in the userconfig.txt. As the RPI first turns on the USB devices and then the GPIO pins based on userconfig.txt the pop is not there as the amplifier is turned on after the DAC. I am trying to figure out how to do the same in reverse when the shutdown is triggered (either from Volumio by clicking “Power off” or by grounding the PIN using one of the plugins). I simply need to turn off a PIN = the amplifier before the system turns off the USB DAC so that I don’t hear the pop in my speakers.
Can you help, please. Many thanks!