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.

So, I tried another SD card and that works fine; it recorded multiple recordings directly after eachother with a 2 second delay. I'll try a full night period tonight. The initial SD card is FAT formatted (double checked that) and I use a SanDisk Extreme Pro - 32GB - U3 - A1 - HCI - V30. So it looks like this card has been damaged in some way... I'll let you know what the result is after tonight.

Correct, so it only records the first time period and stops after that. I've just formatted the SD card and did some tests, but it still records the first time period. I noticed the led lights acted weird when it should record (see video in attachment). I'll try to use another SD card, just to be sure. WhatsApp Video 2019 03 01 at 08 17 56

Hi Alex - I've updated the firmware to the current version 1.2.1. (although it shows 1.2.0 in the app) and used the settings as described in your first message (3595 seconds and then a 5 second sleep duration between recordings), but it still produces only one record and stops after that. Any idea?

Hi Alex - Thank you for the quick response. I'll try these settings for tonight; let's see if they'll work! Thanks again!