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Problem with Configuration

Hello,

I have a question about the settings for my AudioMoth 1.2.0. I use the AudioMoth for bat monitoring. In the caves where the bats live, there’s also dripping water. This frequently triggers my recorder, which then unnecessarily fills up my memory.

What settings could I adjust so that it really only records the bats—specifically the lesser horseshoe bats (approx. 100–120 kHz)?

Attached is my best configuration so far, but it still records far too much "noise."

Best regards,

Aaron

84 Views

Alex Rogers

3 days ago

Hi Aaron,

Frequency triggers tend to be less sensitive to background noise. If you already have a regular recording of the sound of interest, you can try out the effect of the frequency trigger settings in AudioMoth Play (https://play.openacousticdevices.info).

Alex

Edited

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jgrimshaw2

6 days ago · posted in Support Forum

I run Audiomoth software on a 2018 Mac mini with an Intel processor. I recently updated my MacOS and got a message to say that future future updates would not support Application (Intel) and that I needed to update apps to a Application (Universal) or Application (Mac) version.

Will there be a Universal or Mac version of AudioMoth software soon?

Many thanks in advance.

101 Views

Alex Rogers

6 days ago

Yes, all the apps will be updated over the next couple of months with universal binaries for Intel and Apple Silicon machines. Apple will drop support for Intel only apps on Apple Silicon devices in 2027. All the Open Acoustic Devices apps will be universal binaries by then and will continue to work on all Macs.

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VuDjuBuh

6 days ago · posted in Support Forum

Had some... issues

Hello,

I was testing with the audiomoth USB mic and realized the firmware was delivered as firmware 1.3.0.

(plugged into PC USB port for live reading trough app)

So I updated it to the latest 1.12.1.

After this the mic stopped recording sound using the live app in all modes.

After messing with the config app for a bit i couldnt get it to read the live recording trough the Live app anymore.

94 Views

6 days ago

Hi,

In the Flash App, you need to select the ‘AudioMoth USB Microphone’ firmware under the ‘Firmware’ menu.

You have flashed your device with the standard AudioMoth firmware (AudioMoth-Firmware-Basic) rather than the firmware for AudioMoth USB Microphone (AudioMoth-USB-Microphone). The most up to date version of the AudioMoth-USB-Microphone firmware is 1.3.2.

Follow the instructions in the Flash App to switch to flash mode manually (this is available under the 'Show Manual Switch Instruction' menu option if the Flash App does not prompt you to use it), flash the device with the correct firmware, and the device will work again. To do so, you will have to short out the programming pins on the front of the AudioMoth USB Microphone at the same time as plugging in the USB cable. It’s fiddly but will always work. This forces the device straight into flash mode (by running the bootloader) and the Flash App will see it.

You haven’t damaged the AudioMoth USB Microphone, just flashed it with firmware for another device. The bootloader is still intact and you can recover it by following the instructions in the flash app under ‘Manually switch to flash mode’.

However, be careful probing the electronics with your multimeter set to measure current. You are effectively applying a short circuit across the probes. This shouldn’t cause any damage, but won’t really tell you anything either.

Alex

Edited

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eguest

10 days ago · posted in Support Forum

Unexpected recording failure on five AudioMoths after first scheduled recording period

Hi everyone,

I'm hoping someone can help me troubleshoot an issue we experienced during a recent deployment.

We deployed five AudioMoths (all running AudioMoth-Firmware-Basic v1.12.1) that were all programmed with the same configuration. According to the CONFIG.TXT files, the settings were:

Sample rate: 48,000 Hz
Sleep duration: 5 s
Recording duration: 55 s

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Alex Rogers

Aug 05

Hi, Do you know what the LED were doing when the devices were recovered? Can you use the 'Summarise AudioMoth Files' option under the 'Process' menu of the Config App to generate a SUMMARY.CSV file that will show what the AudioMoth recorded. The reason for the short file will be described in the WAV header and will likely reveal what was happening. What make and model of battery and SD card are you using? Alex

Edited

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10 days ago · posted in Support Forum

Defective Moth V1.2.0

My Moth has not worked since I got it. I thought it was just user error and give it a try each migration season but it won't record in any mode. The latest firmware has not resolved it. I got it throughGroupGets. Is it possible to send this one back and get a replacement? I've tried everything at this point.

Device

175 Views

Alex Rogers

Aug 05

Hi, Can you describe the problem that you are having. What make and model of battery and SD card are you using? If you have flashed the latest firmware, you should be able to switch to DEFAULT, and it will make a recording. The red LED will flash, and if you switch back to USB/OFF you will find a WAV file on the SD card. Alex

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10 days ago · posted in Support Forum

Problem with AudioMoth v1.2.0 and Kaleidoscope Pro

Hello,

I have AudioMoth 1.2.0 from Open Acoustic Devices and Kaleidoscope Pro from Wildlife Acoustics. My problem is that I can’t process the files produced by AudioMoth. During batch processing, I always get the same error message saying that no data was found.

I’ve been thinking that the problem might be that the files from AudioMoth are T.WAV files rather than WAV files. The AI—Claude—said that this is the problem, because Kaleidoscope can only handle WAV files.

After that, I tried to convert these T.WAV files into regular WAV files. But that didn't work either.

What could be the problem?

Thanks for your ideas.

Software

104 Views

Alex Rogers

Aug 05

Hi, Can you share one of the files that is causing problems. Is it every file that causes an error, or an error occurs on a single file in a batch which prevents further processing? There may be short files with no audio data within them if an SD card write error has occured. These are still valid WAV files but have no audio data within them. The T.WAV files are also valid WAV files, but have the silent periods embedded within them as silent blocks of data. You should expand them using the tools in the Config App before processing so that you have the correct event spacing and timing in the expanded files. Alex

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12 days ago · posted in Support Forum

Hydro Moth Case Opening

Hello All,

I’m America based scientist exploring the use of hydro moths as a way to monitor oyster restoration and eelgrass restoration. We order two back in June and have had them deployed ever since. We let them run for two weeks before servicing them. During our check one was found with the latch pop open. There was very little water inside and the unit recorded the whole time. The second unit was fine. We decided to put a zip tie around the two units to help keep it closed. After 3 weeks we check them again and both units where open. The zip ties slipped from being over the latch. Does anybody have any ideas on why this might happen? Is there a different case that would be more suitable for coastal intertidal work? One unit is completely lost. The other unit appears to be working. But with this…

Enclosure

42 Views

Alex Rogers

Aug 04

Hi Daniel,

Was the clasp damaged at all? I think your best option would be a wide cable tie around the body, with two smaller additional cable ties to prevent it moving sideways.

Alex

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Alejandra T

12 days ago · posted in Support Forum

Multiple Audiomoths Failing to Record

We installed 31 audiomoths in the field. Upon collection after 2 weeks out, all audiomoths have stopped recording before collection - they recorded for a maximum of 5 days. We used 3 previously used Energizer Ultimate Lithium AA 1.5V Batteries but all had their voltage checked before deployment to ensure a voltage of 1.6+V (showing ">4.9V" in Audiomoth Configuration App). We used SanDisk Extreme 128GB SD Cards also previously used and formatted in exFAT. Audiomoths had Firmware 1.12.1.

All audiomoths had the single green flashing light when switched to custom mode when deployed (configuration text attached).

We created the Summaries via Audiomoth Configuration App for all the SD Cards. This showed that the first (and most of) error was "SD Card Write Error". The audiomoths stopped recording anything after doing 5 1KB recordings and the average voltage of the last recording was 3.7V.

Summaries also showed that battery voltage dropped…

SD Cards

104 Views

Alex Rogers

Aug 03

Hi,

Can you post two of the SUMMARY.CSV files as a comparison. The AudioMoth will typically report SD card write errors in the last few recordings as the battery voltage drops. The reported battery voltage is measured before starting the recording with the battery under light load but the battery internal resistance then causes the voltage to drop during the recording and that causes the SD card write errors. The 128GB SanDisk Extreme cards have very high energy consumption at 384kHz. They consume about 3 times the energy of equivalent Kingston Canvas Select Plus cards.

From the calculated value in the app, and the comparison with the table below, 15 days is about 2700mAh which is probably about right for the rechargeable batteries. The Energizer Ultimate Lithium were probably partially discharged on deployment. The voltage measured under zero load and after a rest isn't always indicative of their true state of charge.

The table is from this application note: https://github.com/OpenAcousticDevices/Application-Notes/blob/master/A_Comparison_of_SD_Card_Energy_Consumption/A_Comparison_of_SD_Card_Energy_Consumption.pdf

Alex

Edited

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12 days ago · posted in Support Forum

Tooltips and Trigger segments on spectrogram

I have modified the Play webapp to show a tooltip that shows the frequency, raw time on a T.WAV file and the actual time. Perhaps it is of use to some. Demo version. Source.

Software

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