I recently purchased two Audiomoths with IPX7 cases. Each was deployed about 8 meters above the ground on extension poles. They are in open areas exposed to occasional high wind and rain. They are about 500 meters or so apart.

When changing batteries a few days ago, I noticed the Gore vent in one case was ruptured. I don't know exactly when the vent was ruptured. I brought home the audiomoth and case to replace the vent. I also looked at the recorded files. The files recorded as expected in terms of names, timing, etc.

However, each file contains primarily static. Animal sounds can sometimes be heard through the static, but static dominants and renders the recordings useless.

I placed the Audiomoth in a sealed ziptop bag with dessicant bags for three days. I then made a test recording by switching on the Audiomoth to the default setting. The test…

Hi,

As part of a biodiversity monitoring program, I am looking to record birds and bats at 20 sites across the Northeast US over two week deployment intervals (if possible). Is the Audiomoth v1.2.0 (and a case) all I need to do this?

Sorry, I am new to this and am basically trying to figure out if I am better off with the dev version + GPS + mic + case or just simply the v1.2.0 + case.

Thanks for any help.

L

Hi starting a large project and had two questions.

1. Does switching out the SD cause the configuration to be lost?

2. Is there a way to see the configuration of a configured audiomoth?

   - I wanted to experiment with switching out sd cards but when I attach the unit to the configuration ap it doesn't show the configuration.

   Thanks, Jeff

Hello, I have 20 audiomoths currently deployed inside waterproof cases inside nestboxes. 3 of them have encountered an issue where the gain seems to have become extremely low. For the rest of the audiomoths there's lots of outside noise from other birds, cars etc. but for these three they mostly just pick up the birds in the nestbox. These three originally worked well but this seems to have happened between scheduled recordings (I have them set to record 3 hours after sunrise and 3 hours before sunset, the recordings changed at some point in between these two sets i.e. overnight or middle of day).

This isn't really the end of the world in one sense since I am interested in those birds however I would prefer if they were all consistent. I've attached spectrograms from the same audiomoth before and after the recordings got worse. Any help would be appreciated.

Hi,

When using different audiomoths, I've noticed that some audio files are saved in folders separated by day, and others are not separated at all. Further, some audiomoths create folders titled "trial," whereas others do not.

Thank you for your help!

-Ben

Hello everyone,

I've had an AudioMoth Dev 1.0.1 and the matching housing for a month now. Unfortunately, the device is not able to record data continuously...

My workflow is as follows:

- Connect power

- USB/default -> Configure via PC

- Hang it in the designated location and switch to Custom

Hello,

This is what I do:

First, I configure the AudioMoth and switch it to USB/off.

Then I disconnect it from the USB port.

Then I close the PC app.

Then I connect it to the PC.

Do we know if there exists (for any reason) variability between AudioMoth devices? In other words, is it possible that AudioMoth devices placed in the same spatial and temporal location and configured identically can record differently?

I record bats and perhaps small differences, for example internal hardware noise, could influence analyses done with identification software (e.g. R's Random Forest).

Thanks for any clarification.

Paolo

Hello!

I’m experiencing an issue with around 15–17 AudioMoth devices. They can be configured without any problems initially, but after some time the configurations are lost and the devices revert to their default settings.

I’ve already tried replacing the batteries, reflashing the AudioMoths, and using different SD cards, but the problem still persists. What could be the cause of this, and are there any additional troubleshooting steps you would recommend? Could this indicate an issue with the flash memory, meaning the devices might be defective?

Thanks in advance!

Hi,

I need to record  Zeuneriana marmorata, a cricket endangered of extinction in Italy that I am trying to translocate.

The aim is to leave the recorder in different localities and compare the 24h automated recordings.

What kind of product do you suggest?

How long can your device record?

Can you suggest reference literature on Orthoptera that used your device?

Hi everyone,

Could you please help me confirm the correct pins to solder for the stereo mount jack? Is the following combination correct?

• 1: Ground pad 1

• 2: L signal pad 1

• 5: L signal pad 2

• Jack detect: Ground pad 2

Hi,

Despite the IPX7 Waterproof, one of my AudioMoth {1.2.0} took on water. One of the batteries seems to have leaked.

Although cleaned and dried, in USB connection, the Apps do not see the device. On the LED side: the red LED remains fixed, the green LED flashes.

Of course the water that leaked onto the AudioMoth had consequences on the electronics... but just in case, do you have any ideas for possible repairs / things to search for?

Thanks.

Is it possible to modify the firmware so that the data stored on the SD card can be accessed via USB connection, instead of removing the card from AudioMoth and connecting it to a PC with a card reader?

I just bought my first AudioMoth, along with the weatherproof case. A couple of questions:

1. included in the box was a small plastic envelope containing two small round items - what are these for? Looks like maybe to replace the case opening cover when <what> happens?

2. I'm recording NFCs so am placing the AM flat facing upwards. What does this mean if it rains overnight? I'm thinking the cone around the mic hole will fill with water. Should I put it in a ziplock bag if rain is expected, and if so how will that affect sound pickup?

It should be very positive, in terms of reliability and better sound inlet, to manufacture the Audiomoth-USB mics with a better-designed and larger in diameter orifice for the MEMS mic sensor. See attached pic. Could it be possible?

?

Is there any technical possibility of enabling an AudioMoth to somehow emit power and storage status. I would like to use a separate LoRa device, to check the status of AudioMoth, and broadcast it. The use case is I will place Audio Moth devices on private land, where I need an escort, the boundary is a few hundred meters away, so I could ping it, and only request access when needed. Arguably, I could probably predict the storage capacity and do some sums, and just provide a lot of stored energy. is this what others do?

There are signs of corrosion on the Audiomoth circuit board, but it still works. Can we still use it? If yes, should we try to get rid of the corrosion?

Hello, I have been having issues with getting some GPS hats to get a fix.

I have successfully soldered some Audiomoths and GPS hats together, and they have been able to get a GPS fix from inside a lab room inside a building, far away from doors and windows. However, two other Audiomoth/GPS hat units have not been able to get a fix from the same location, even if close to doors and windows. I have been using a SETTINGS.TXT file that the functional units have been able to get a fix with. I can provide the file if it would be helpful to see it.

Both Audiomoths function properly with Audiomoth-Firmware-Basic and can record files using a configuration from the Config App that does not use the GPS hat. When I soldered the functioning Audiomoth/GPS hat units together, I used a multimeter to measure their resistances and connections, and…

I need to synchronize the recordings of several AudioMoth devices with microsecond precision. I attempted to do this by turning the devices on approximately simultaneously in default mode and recording a reference signal both at the beginning (within a few seconds) and at the end of the recording, just before shutting the devices down.

Unfortunately, the signal at the beginning and the end of the recording is sometimes not captured.

I have three questions regarding this:

1. How long does it take for an AudioMoth device to start recording after being powered on (in seconds or milliseconds)?

2. At what intervals are recordings saved to memory (e.g., every minute, every 15 minutes)?

3. Are any recordings lost or skipped during the saving process, or is all data continuously stored?

Hi AudioMoth Team, I have 2 AudioMoth Dev's running the AudioMoth-USB-Microphone v1.3.1, and no matter what I do I get buzzing noise. I tried gain, changing sampling rates, filtering, I messed around with AudioMoth Live and Play apps, nothing solves the problem. I took them outside and powered them with a battery and the sound remains. I have tried them with a Mac, a Windows laptop, a microcontroller, different USB cords and ports, etc. I noticed this post: https://www.openacousticdevices.info/support/configuration-support/buzzzing-sound-white-recording I am certain mine have never experienced water damage, and I have had this noise since I opened them. I assumed it was user error and that I would solve it at a later date, but nothing I have tried works. It can get better than it is in these recordings, but not by much.

Here are recordings from each of them, taken at 48KHz with Gain @ Low with no filters and no advanced settings,…

Hi,

I bought 5 Hydromoths in January 2025. 2 of them are having strange malfunctions. The other 3 will no longer connect to my computer with the configure app. The light doesn't come on when I connect them to the computer. The cord I'm using seems to work fine for other units.

1) is only recording for about 12 hours and then abruptly stops. It still has plenty of battery and plenty of space on the SD card. I've tried reinstalling the firmware, but didn't help.

2) Another recorder consistently has the clock running fast. I deployed it for about 48 hours (20 sec. out of every minute) and when I retrieved it had closer to 72 hours worth of recordings. I've used the same one 3 times, and this happens every time. I don't know how to fix this.

Thanks!

-Julia

I'm using a 1.2.0 AM. First it wouldn't configure after coming back from the field. Now it configures ok, but when I make test recordings sitting about 50 cm from microphone, they are very quiet (using default configuration - 96kHz and Med gain) - I tried increasing the gain, and certainly got more noise, but volume of recording was still very low. Any suggestions?

Hello,

We are currently trying to connect a solar panel to a charger and a lithium battery so the AudioMoth dev can be left in the field for a longer period. The linear battery charger (Adafruit bq25185 USB / DC / Solar Charger with 5V Boost Board) provides a constant 5V to the AudioMoth as long as there is enough sun and the battery is not empty.

The problem is that the AudioMoth measures this voltage and writes 5V (or "greater than 4.9V" to be exact) in the metadata of the recordings. As a result, we cannot get a reading of the actual battery voltage.

The charger board has a pin (BAT) giving the voltage of the battery. As we want to monitor the battery voltage, we are looking for a way to read the BAT pin with the AudioMoth dev. Would the GPIO port be able to read it?…

Hello,

We want to use AudioMoth for bird and bat recordings and the recommended type (in the instructions manual) are lithium type batteries. Could you recommend any AA rechargeable batteries of this kind that would be best for AudioMoth?

Thank you

Tudor

I am looking for a device to monitor and identify birds in my woodlot in New Brunswick Canada. How long would the battery last in a 7/24 mode?

Hi, I am using AudioMoth (version 1.1.0) for my data collection in India. I have some issues with a few of my devices:

1)      One recorder doesn’t have a switch to turn the recorder on or off

2)      One recorder is always showing battery level < 3.6V in the configuration app

3)      One recorder is storing audio files, but it’s just white noise; the PCB of the same recorder is detached from the battery holder on one side.

Can someone help me solve these issues or connect me to people who can assist with that?

Thanks!