Troubleshoot Sound

All sounds get played infinite

This is most likely because your OpenMower’s mainboard miss R7 and/or R13. See DFPlayer Module.

But also happen if you use an old or damaged SD-Card which take loooong for getting the file allocation table.

Howto increase or decrease volume?

This depend on the type and version of your CoverUI:

I decreased my volume via volume-down button, but sound get still played at full volume

This is a known issue with DFPlayer-Clones in mainboard version 0.9.x up (and incl.) 0.13.x. Read here how to fix.

I do hear one or two more adverts as before, but no GPS-Pings, no “Bidaa bidaa” emergency, …

First off: “Bidaa bidaa” emergency signalling or similar, is an optional ‘background-sound’ feature, which is disabled by default. You need to enable it via export OM_BACKGROUND_SOUNDS=True in your mower_config.

If it still doesn’t play after changing export OM_BACKGROUND_SOUNDS=True in your mower_config, this is most likely because your DFPlayer’s SD-Card is still in the old format. See Sound SD-Card,

I do hear some new sounds, but they do not match to what happen

You mixed up DFPlayer’s SD-Card by adding the new files on top of the old ones. You need to remove all old files before copying the new ones. See Sound SD-Card.

Sound worked for a couple of weeks, but then my Pico suddenly died

This happen because you enabled full sound support by signalling it via OM_DFP_IS_5V=True flag, but didn’t switched it in real. See Change DFPlayer’s V_CC to 5V.

Don’t worry. A new Pico is cheap (~ 4$). Happy desoldering 😶!