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Audiomoth losing configuration?

Recently bought 10 Audiomoth units and am having a possible hardware issue with 4 of them. We were able to configure the majority of them with no issue, there are those 4 that seem to lose either the clock or are resetting after a period of time once they're switched over to Custom mode and been deployed. Not entirely sure when it's happening cause I've been setting them aside to watch the indictor lights and everything seems to be in working order until we bring them in. We don't have them on intensive recording sessions or out for very long so it's not running through the batteries or SD cards either.

They were all initially configured in one go with the same settings and it's always the same 4. We've tried a few troubleshoots; chiming them in the field, reflashing them, but those 4 continue to revert back and flash green while the red stays continuous while the rest are not having that issue.

7 comments

7 Comments

Pitts Oscar

Jul 18

Have you tried swapping the SD cards from the functioning Audiomoth units into the problematic ones to see if the issue persists? This could help determine if the problem is with the SD card itself or something else. slice masters

Ecil Parks

Jun 28

Swap the SD cards from the working units into the problematic ones to see if the issue persists. This can help identify if the problem is with the SD card itself. snake game

Michael Bowers-Dean

Jun 28

Replying to

Will try that!

Alex Rogers

Jun 27

Hi, Can you confirm what SD card and batteries you are using. We've seen this a couple of times with SD cards that have very high write currents. They cause the AudioMoth to reset and lose the time when it first attempts to write to the SD card on switching to CUSTOM. Alex

Michael Bowers-Dean

Jun 28

Replying to

SD cards and batteries are the same for all units- SanDisk Extreme 32GB and EBL Rechargeable 2800 mAh.

Alex Rogers

Jun 28

Replying to

SandDisk Extreme (red and gold) are generally very reliable and we haven't seen this reported for this AudioMoth. If the AudioMoth made some recordings before stopping, can you generate a summary of the SD card contents using the 'Summarise AudioMoth Files' option under the 'Process' menu in the Configuration App. This will show if something unusual was happening to the battery voltage during recording.

ruby.l.hammond

Aug 22

Replying to

Hello. I just wanted to follow up on this in case it was useful to you or others. Michael worked for me and I've taken over setting up our AudioMoths. I started reformatting the SD cards every time I take data off of them and reconfigure, and they have behaved perfectly since then, except for one. It turns out that one of our SD cards just would not record data (I used your directions above and there would be nothing on the card). Monitoring it in my office, the blinking green lights would become accompanied by a constant red light (sometimes many hours after configured). I switched the SD card into another unit and the same thing would happen in the new unit. So, one of our brand new SD cards was just faulty, even though we got the ones suggested by you all. I'm sure it happens. Thank you for your help!