Hi - I've been using my Audiomoth for several weeks now and I'm recording nocturnal bird migration over my house. Normally, my track gets split during midnight and continues the second half directly after, despite the configuration app says it will produce just one file. Since a couple of days, my Audiomoth stops at midnight and doesn't continue with the second half of the recording. Any idea what's wrong? Thank you in advance!
Hi Bas, It sounds like the battery is running low and that the files have been corrupted because of this. We've added a software check for this in the next version of the firmware to be released in a couple of weeks which will stop recordings safely when this happens.
You can check the header information in a number of different ways. On a Mac the 'Get Info' option will show you the information.
You can also read it in an audio editor such as Audacity.
Or just open the file as a text file and read it amongst the other header information.
If you email me your address (alex.rogers@cs.ox.ac.uk) I'll put a SD card in the post.
Hi Alex - So, I've tried a couple nights in a row now and at first it looked like it worked (putting a new SD card in the AudioMoth). But last night (and partly the night before) it only recorded files which were damaged or had a different file extention (the PC couldn't specify). The size of the files were 0 bytes. The only thing I noticed was that the battery level became below <3.6 V. Normally, it just specifies what the voltage is, but now it says "<...", so I'm going to try to replace the batteries and try for one more night.
I'm based in the Netherlands and I'm willing to send you the SD card so you can take a look at it. I have no idea how to find those battery levels in the header files of the recordings. I can send you one (or two) of the recordings if you want.
I'll let you know what happend after I replaced the batteries today.
Yes, sorry 1.2.0 is the up to date firmware. When you say one recording, that means just one 3595 second recording, not the full recording period. That's very strange. I've set an AudioMoth up here to try to reproduce it. One thing to try is to reformat the SD card. It seems very strange that it used to work and has now stopped. Has this occurred with one single SD card?