So far the following is complete in prototype form:

- ADC board

- Driver overlay for ADC board for Raspberry Pi

- Python library to control ADC board settings

- Python code to record continuous files, 1 file per hour, with compression options (flac, vorbis, opus)

- Microphone housing with wind noise reduction

- Around 200 hours of recordings, longest run 100 hrs which I halted.

- Interesting recording of owls, coyotes, birds

- some calibration of sound pressure to ADC values

- preamp design

I will be posting more info on the details of each!