I got the device charged up, trying what seems to be a built-in audio pass-thru program from the built-in mic to some earbuds that I connected to the black jack. Works fairly well.
Lots of Tympan into, for example Safe Listening Levels , mention a “blue volume knob”. I don’t find it. I see a black dial next to on-off switch, with a a white dial? 2 switches? behind it.
The black dial doesn’t change the volume very much. I haven’t tried the white thing behind it yet.
I assume these are device appearance changes since for example Getting Started with Tympan · Tympan/Docs Wiki · GitHub was published.
Any newer instructions for volume settings? Or physical appearance?