I believe the inputs want a line level signal so maybe a mic pre-amp would be needed in-between?
Yes, it really does needs a pre-amp, even with 2.0 gain in phillis I needed another 20db gain in audacity to hit 0db and noise floor is predictably high.
Need to finish that battery powered mixer…
BT version is 5.50 on the fates install.
Latest is 5.52 but not much interesting in the change logs that I can see. Looks like the BLE midi implementers personal websites gone dark too.
I think BLE midi is a distraction from my distractions. So all I will just add some more breadcrumbs for now. It might be possible to enable experimental mode in bluetoothd by adding the --experimental flag to your /etc/systemd/system/bluetoothd.service file.
Also this might help? https://github.com/oxesoft/rpi-midi-ble Note: documentation is scant to non-existent.