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Recording stopped on 1.8.2

I record overnight with my audiomoth but I have lost recordings after upgrade to 1.8.2. Last night was scheduled to record from 17:10 to 06:30, but only recorded from 17:10:01 to 23:59:50. The LEDs displayed normal i.e. slow green flash with switch on Custom. I use rechargeable NiMH batteries and the header of the last file recorded at 23:59:50 11/10/2023 showed voltage 3.9V. The SD card is 64GB Sandisk Extreme. The config.txt file shows

Device ID : 2423C2045F25698C

Firmware : AudioMoth-Firmware-Basic (1.8.2)

Time zone : UTC

Sample rate (Hz) : 192000

Gain : Medium

Sleep duration (s) : 5

Recording duration (s) : 5

Active recording periods : 2

Recording period 1 : 00:00 - 06:30 (UTC)

Recording period 2 : 17:10 - 24:00 (UTC)

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

Latest recording time : 2023-10-12 00:00:00 (UTC)

Filter : High-pass (15.0kHz)

Trigger type : -

Threshold setting : -

Minimum trigger duration (s) : -

Enable LED : Yes

Enable low-voltage cut-off : Yes

Enable battery level indication : Yes (NiMH/LiPo voltage range)

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

7 comments

7 Comments

markw

Oct 12, 2023

Hi Alex, Thank you for pointing that out. I must have inadvertently clicked on last recording date. Apologies for inconvenience caused. Mark.

Alex Rogers

Oct 13, 2023

Replying to

No problem. Every update we release brings the risk that we've broken something! Thankfully not this time.

markw

Oct 13, 2023

Replying to

Many thanks for all your good work. I can confirm recording now OK on 1.8.2 for me after correcting my mistake.

markw

Oct 12, 2023

Hi Alex, Thanks for your reply.

The last 10 recordings were all expected file length of 1920488 (Excuse file names I had to undelete them)

-rw-r--r-- 1 root root 1920488 Oct 11 23:59 _~0B9D33.WAV

-rw-r--r-- 1 root root 1920488 Oct 11 23:58 _~1850CF.WAV

-rw-r--r-- 1 root root 1920488 Oct 11 23:58 _~6F79E4.WAV

-rw-r--r-- 1 root root 1920488 Oct 11 23:59 _~7CB418.WAV

-rw-r--r-- 1 root root 1920488 Oct 11 23:58 _~812BB2.WAV

-rw-r--r-- 1 root root 1920488 Oct 11 23:59 _~92E64E.WAV

-rw-r--r-- 1 root root 1920488 Oct 11 23:58 _~ACEACE.WAV

-rw-r--r-- 1 root root 1920488 Oct 11 23:59 _~BF2732.WAV

-rw-r--r-- 1 root root 1920488 Oct 11 23:59 _~C80E19.WAV

-rw-r--r-- 1 root root 1920488 Oct 11 23:58 _~DBC3E5.WAV

-rw-r--r-- 1 root root 1920488 Oct 11 23:59 _~E5CF65.WAV

-rw-r--r-- 1 root root 1920488 Oct 11 23:58 _~F60299.WAV

Does the recording report stoppages in its file header? If so, the last file header shows

head 20231011_235950.WAV

RIFF�MWAVEfmt ��LIST�INFOICMT�Recorded at 23:59:50 11/10/2023 (UTC) by AudioMoth 2423C2045F25698C at medium gain while battery was 3.9V and temperature was 18.5C. High-pass filter with frequency of 15.0kHz applied.IART AudioMoth 2423C2045F25698Cdata

Mark

Alex Rogers

Oct 12, 2023

Replying to

Thanks. The recordings stopped because of the 'Last Recording Date' setting, rather than the low battery changes made in 1.8.2. I think you must have enabled this option when configuring without noticing.

Alex Rogers

Oct 12, 2023

Hi, Can you check the lengths of the last recordings and post a screenshot here. Did the last recording report that it had been stopped early due to a low supply voltage? Alex

Alex Rogers

Oct 12, 2023

Replying to

Actually, the configuration shows that the 'Last Recording Date' in the Config App was set to 11/10/2023 so the recordings stopped at midnight as requested. The 'Last Recording Date' will default to the current day, and when enabled, will prevent recordings from going past midnight.

Edited