Hello,

Last year, I purchased 20 AudioMoths via GroupGets. I deployed them for 2 months at a site Feb - Apr 2025, each in the weatherproof cases. I configured them to record at a sample rate of 48 kHz and 16-bit depth, with bursts of 1 min recording periods, then 4 mins of sleep 24/7. We changed the batteries mid-way through, using the chime app to reset date/time, and upon review of the devices, the batteries lasted for 3 weeks (AA Ni-MH 1.2V 2400mAh). 256GB SanDisk Ultra SD cards were used. All went smoothly, and recordings were as expected.

This year, I have come to repeat my survey, following the same protocols as the previous year (other than accidentally using 4 min burst of recording with 1 minute of sleep!). Upon reviewing the SD cards, not a single device has recorded as expected. Some have no recordings at all, whilst…

Hello, I am having problems with the recording time. Since that I have to set up the timer with the software already running it is not saving with the five minutes time that I want. How can I solve this problem and set up the software to run for five minutes correctly?

I'm testing five audiomoths with a gps hat, the gree light stays on with red light flashing. No sound files and the attached GPS.txt files created. If not uisng the GPS, the audiomoth records

Hello everyone.

I am researching bird migration on Spain and I have a problem with my 1 month age audiomoth 1.2.0. Records are now with no sound at all. At the begining it was recording ok but something seem to happened. Now leds are working ok, schedule is ok but when I open archives with 5 different software, there is no sound at all. It is the same with different configurations and sd cards. What could be the problem? Can I solve it attaching an external microphone?

Thank you very much.

Jorge

Hello everyone,

I have a problem with my AudioMoth device and hope that someone may have had a similar experience or found a solution.

Almost every recording is preceded by a ‘ticking’ noise. Whenever there are no bat calls, the AudioMoth still produces short recordings by itself, and these contain a tick that seems to be generated by the device. I have attached an image of this noise.

My question:

Are there any known causes or settings that could cause these internal ticks?

Deployed 19 AudioMoths units over 8 sites in the southern half of the lower pennisula of Michigan. AudioMoths were deployed the end of February, with batteries and memory cards changed out the end of July and all devices collected the middle of November.

Based on the configuration  they should of lasted ~150 days.

(Sample rate: 48 kHz; Med gain; Enable sleep/record cycle; 00:04:45 sleep duration; 15 sec recording duration; Enable LED; Enable battery level indicator; 24 hrs/7days recording period = Each day will produce 288 files, each 1440kB, totaling 415 MB; Daily energy consumption approx. 19 mAh).

AudioMoths stopped recording after ~30 days (btwn Feb. 24 and March 29) and after ~60 day (btwn July 22 and Sept. 24).

I was using Energizer Ultimate Lithium AA Batteries and Amazon Industrial Alkaline AA batteries with Amazon basics microSD XC1, 64 GB, V30, Class 10, U3, A2.

Batteries were a couple years…

Hi,

I ordered one audiomoth (Labmaker, Germany) May 2025, version 1.2.0,

flashed it with 1.11.0 (can't remember if I had to switch off the USB HID flashing, I think I needed to). This one is working perfectly, recording already for two months now in the field.

End of sept 2025 I ordered 2 extra Audiomoths 1.2.0. Flashed to 1.11.0 (needed to switch off USB HID flashing for both). Configuration with same .config as first one. But for both a lot of electronic noise is heard, the spectrogram shows horizontal lines at 4, 8, 12 kHz and sounds seem to repeat in between. I tried downgrading to 1.10.0, but the problem was the same. What is your advice?

Dear Open Acoustic Devices team,

I’m writing from Spain regarding an issue with my AudioMoth v1.2 unit, which I purchased about 8 months ago through GroupGets.

Since about a month ago, the device has stopped recording properly. It still creates WAV files of normal size and I can hear the typical background noise, but no real audio is captured — just constant white noise.

Here’s what I’ve already tried:

• Updated the firmware to version 1.11.0 (latest release).

• Tested with several SD cards (properly formatted) and new batteries.

Hello,

I am conducting my undergraduate thesis on amphibian bioacoustics in the Dominican Republic. I’ve been experiencing some issues with my recordings; out of my seven AudioMoths, only three recorded properly. Some devices recorded for only four days, others for about twenty, and only a few completed the full month. I’m wondering what could be causing this.

Could it be due to humidity? At my study site, humidity often reaches 100% and rarely drops below 75%. Daytime temperatures are around 25 °C, while nighttime temperatures can fall to 7 °C. I noticed that some of the batteries showed signs of corrosion, with bluish residue on the devices. I use the protective cases for the AudioMoths, but they might not be sufficient against moisture. I’m considering placing them inside Ziploc bags with silica gel, as I suspect humidity might be the main issue.

All units use Duracell AA alkaline batteries, Kingston…

Hello,

We're using audiomoths for a largescale monitoring project and we noticed a few recordings having "blank" spots. It's very intermittent and seemingly random. The files attached show the recording "blanking out" after some amount of minutes and remaining "out" for the rest of the file. In all cases, the sensor continues to record the next file that day and the following days with no issues. Ie, these are not files that are recorded as the battery is dying or the card is filling up. This project has over 100 sensors and this has happened with about a dozen of the sensors, usually one time per sensor (with one exception where a sensor had recurring blank spots and thus we stopped using it). Does this indicate an issue with the sensor, microphone, or something else? Can anything be done? Files are too large to attach so I've shared via googledrive. https://drive.google.com/drive/folders/1CI83Keo-8pMcCXT-KrX00rfRZR7zQuCS?usp=sharing

Thank…

Hi there, I have managed to use many audimoths and have got them to record on schedule.

I now have two that just fail to start recording. I have done software updates, firmware updates and even manually flashed the firmware too. It seems like something else is wrong. Tried different memory cards, all formatted first, new batteries etc. Once set in custom mode, just get the green flashing led approx every 2 seconds. At the time of scheduled recording, it give a single long green flash then returns to the two second interval flashing led. I wondered if you have ever come across this, these units have been used previously in the field. I was asked to try and get 6 units working. I have now got 4 working but these last two are being stubburn. Many thanks, Sean

Hello!

I work for a non profit and we are currently using AudioMoths to conduct some bird research on our restoration sites in the San Joaquin Valley and Merced County in California. We thought we had them programed to drain the battery and fill the SD cards in ~30 days but we keep having about half of them die due to low voltage around 2-2.5 weeks.

Current set up and settings:

Model: Audiomoth 1.2.0

Schedule: 1min sleep / 29min recording between 5am-9am. March15-July 31.

Sample rate: 48kHZ

Hi everyone,

I got all my recordings with this kind of noise (in picture) on a Hydromoth Firware Basic 1.11.0. We used SD card SanDisk Extreme 64 Go.

Could it be the SD card when is writing? Do you have any recommandations?

Thanks,

Hello AudioMoth support community,

I have been having troubles with my AudioMoths recording half as long as expected for my Master’s research project. I deployed AMs at each of my urban sites in Stockton, CA, in February and March 2025, expecting to get 8-10 weeks of recordings, but instead the batteries have somewhat consistently died at around 30 days.

Here are my configuration details (file also attached below):

• My recording schedule is: 1.5 minutes of recording every 15 minutes from 10:30-6:30 UTC (2 hours total of recording per day)

• Sampling rate: 48 kHz

• Gain: medium-high