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I see batty birdnet was already mentioned, the android app Bat Ai also uses the batty birdnet. If you uses android you could try to connect a cardreader to the USB port and view and classify the sounds via Bat Ai

Hi Rainer, that looks like some interesting information, I tried to apply some filtering in the microphone amplifier circuit but ended up with unwanted artifacts. Maybe tis is a good idea and if someone actually tried this and has good results it...

I uses Beitian BN-220, and also tried a newer version of the same manufacturer which schould use less power but I did like the BN better. I did noit investigate further, any that talk ublox should work I guess.

It is indeed one of the most common encoders with switch. Please check the soldering first. The GND pin (middle) needs some extra heat. There are thermal reliefs but stil the heat is conducted away in the surrounding copper. Sometimes this...