Command to regenerate mpd.conf

[Adrii]

Hi

I have a project that includes an audio visualiser (spectrum display)

OLED spectrum display on Volumio on Raspberry Pi Zero W

I wrote a program for an OLED spectrum display on Volumio on a Raspberry Pi Zero W. The program runs Cava as a subprocess, which reads a copy of the mpd audio from a fifo and writes the spectrum data to another fifo, which is read by the calling program and displayed on the OLED. When there is no audio data the display switches to a clock. My code depends on a Cava update that has not yet been released. When it is I will upload my code and instructions to Github. In the following (poor) video …

Volumio does not provide a way to configure a copy of the playing audio, which is needed for audio visualisation.

An incomplete, but easy and reliable way to make a copy is by adding an audio output section to /etc/mpd.conf, which means editing mpd.conf.tmpl.

The changes can be undone, to allow updates, by running

volumio updater restorevolumio

(not that this command changes /etc/mpd.conf !)

Any other suggestions for making a (software) copy of the playing audio would also be welcome. The following thread looks at the use of ALSA configuration, but is tricky to give instructions for, and I am not sure if the configuration will be overwritten by Volumio or plugins

Spotify an Airplay

Adrian.