I have two hydromoths and both are experiencing similar problems when deployed. The initial recordings are fine for around 5 days (producing files of the expected length) and then the recording schedule seems to be disrupted, producing errorneous files not following the configured recording schedule.

The file outputs and my config files are pasted below. I was using duracell plus AA batteries and samsung evo 256GB micro SD cards.

For future deployments, I'd like continuous recordings (ideally 1 h files, 24 hours a day) at 96kHz. This was initially happening in the second deployment, but then something seems to have gone wrong in the 20230911_160120 file onwards. The start file time is correct, but each file is only a couple of minutes long.

What could be causing this issue? Is this an error with the devices or the config files?

Thanks in advance!

Laura

Deployment 1 (switched to default not custom so did not get 1h files):

Device ID : 242A260463FB81B1

Firmware : AudioMoth-Firmware-Basic (1.8.1)

Time zone : UTC

Sample rate (Hz) : 96000

Gain : Low-Medium

Sleep duration (s) : 5

Recording duration (s) : 3600

Active recording periods : 1

Recording period 1 : 00:00 - 24:00 (UTC)

Earliest recording time : ---------- --:--:--

Latest recording time : ---------- --:--:--

Filter : -

Trigger type : -

Threshold setting : -

Minimum trigger duration (s) : -

Enable LED : Yes

Enable low-voltage cut-off : Yes

Enable battery level indication : Yes

Always require acoustic chime : No

Use daily folder for WAV files : No

Disable 48Hz DC blocking filter : No

Enable energy saver mode : No

Enable low gain range : No

Enable magnetic switch : No

Enable GPS time setting : No

Deployment 2:

Device ID : 245AAA0563FB735B

Firmware : AudioMoth-Firmware-Basic (1.8.1)

Time zone : UTC

Sample rate (Hz) : 96000

Gain : Low-Medium

Sleep duration (s) : 5

Recording duration (s) : 3600

Active recording periods : 1

Recording period 1 : 00:00 - 24:00 (UTC)

Earliest recording time : ---------- --:--:--

Latest recording time : ---------- --:--:--

Filter : -

Trigger type : -

Threshold setting : -

Minimum trigger duration (s) : -

Enable LED : Yes

Enable low-voltage cut-off : Yes

Enable battery level indication : Yes

Always require acoustic chime : No

Use daily folder for WAV files : No

Disable 48Hz DC blocking filter : No

Enable energy saver mode : No

Enable low gain range : No

Enable magnetic switch : No

Enable GPS time setting : No