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2 days ago

Deleted files?

Hello everyone,

My team recently checked our audiomoth SD cards that we turn on for an hour twice daily. They had not recorded new files for about 2 weeks and all old files are now take up 0 Bytes of space and do not play any audio. We reconfigured new cards that are now working, but want to recover old files and avoid this issue again. Any ideas or tips on how to recover and keep our data safe?

Also, some files and our configuration now say to have been recorded in 2098?

Thanks!

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Alex Rogers

2 days ago

Hi, What make and model of SD card and battery are you using? This looks like the SD card is full. Always reformat the SD card before use. Deleting files will only hide them and the AudioMoth will not be able to find space in the file allocation table for the new recordings. Alex

3 days ago

Initial advices

Dear Experienced Users of AudioMoth

I am absolutely new in this field, and need a support from very beginning.

We plan to set up a network of AudioMoth devices in several protected areas in Armenia for PAM focused on birds.

Within that framework, we think about maximal optimization of the logistics and operational procedures. So, possible scenarios can be (if they are technically doable at all): Scenario A

1. there are some clusters of of solar powered devices (e.g. per ecosystem) which record sound and transfer recordings to the single station.

We download the recordings from the station once per every 6 months

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Alex Rogers

3 days ago

Hi,

Scenarios A and B are feasible but you'll need to build and program some custom hardware. For C, you can just buy the kit and deploy it, so to some degree it depends on how much development time and budget you have. What are you recording? The data and battery life are largely determined by the sample rate and the recording schedule. Many deployments will use duty cycles such as recording one minute in every ten to increase deployment times.

The Config App will tell you the energy and storage requirements of any schedule. The example below records for one minute in every ten at 32kHz. The larger AudioMoth Dev case uses D-cell batteries with a capacity of about 10,000mAh, so this schedule would last for 500 days, and require a 512GB SD card. You would only need to change the SD card and batteries once every 12 months.

Alex

peca

4 days ago

Mixed success with Audiomoth deployment: Any idea on what went wrong?

Hi! I recently deployed 6 Audiomoth units at 3 different locations (2 audiomoths per location). They remained in place for almost two weeks, and were scheduled to record starting on the third day. Of these 6 audiomoths, only three seem to have recorded with no issues. One audiomoth stopped recording on the first night, and two audiomoths have no file saved to the sd card, no recordings nor config file. What's weird is that these two audiomoths with no recordings managed to drain all batterie charge, with the Config App reporting less than 3.6V. All audiomoths were "alive" when deployed, i.e. were flashing when set to Costum (though I do not recall the flashing pattern), but the two that did not record anything were not flashing when collected.

Looking for advice on what went wrong.

I'm detailing the materials used below, and attaching a config file, which was mostly the same…

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Alex Rogers

4 days ago

Hi, Yes, I would be suspicious of the PNY SD cards. When deploying, it's good to switch initially to DEFAULT, to check that the SD card is writing correctly, and then switch to CUSTOM for the real deployment. Can you use the 'Summarise AudioMoth Files' option in the Config App to generate a summary of the contents of the two PNY cards that did record.

Try putting a different SD card in one of the two AudioMoth that did not generate any recordings, switch to DEFAULT, and check that a CONFIG.TXT file is generated. The original schedule set on these devices will be shown in that file

Alex

5 days ago

Call for Testers: Android App to Configure Your Audiomoth

Hi everyone,

I’m developing an Android app that allows users to easily configure their Audiomoth devices. The app will be available for free on the Google Play Store, and I’m looking for volunteers to help test it before the official release.

What’s Needed?

To participate in the testing, you’ll need:

A Google account (to access the app).
An Android device (phone or tablet).

Announcements

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