Could you double check that the USB cable is a data sync cable rather than just a charging cable?

Yes, it will adjust with the actual lengthening of the days over the weeks.

Yes, the device must be plugged in by USB, and the AudioMoth batteries must still be present and have capacity since the deployment. AudioMoth time resets when power is lost. You can compare the time on the AudioMoth Configuration App to the current time on your PC.

AudioMoth time will drift about +/-1 second a day and this rate would vary depending on environmental factors, such as temperature. If the AudioMoth GPS modules were used, you would be able to log this drift accurately. Otherwise current AudioMoth time can be displayed using the AudioMoth Configuration App giving the total drift.

In AudioMoth Play, you can display real time on the x axis by clicking the grey "Settings" cog on the bottom right of the visualisations and checking "Display real time on x axis". Note that AudioMoth time will drift without GPS synchronisation, so you may need to add a GPS module to the AudioMoths for the GPS tag data to perfectly align with the audio.

Thanks. I'd like to investigate the hardware if possible, could you email me at andy@openacousticdevices.info?

Hi Rodrigo, Could you clarify which product (AudioMoth or HydroMoth) and hardware version number you are getting these errors for? Thanks

Hi Graeme, We have a few spare battery holders. If you can email me at andy@openacousticdevices.info we can arrange.

Hi Paul, We have a small number of sockets available in the UK - you can email me at andy@openacousticdevices.info to arrange.

Thanks for spotting the link issue. We'll update the datasheet version number with changes. The changes from 1.0.0 to 1.0.1 are very minor adjustments to improve the assembly process rather than function. The changes are: • Added fiducial markers to the PCB to help align pick and place machine. • Adjusted low frequency oscillator footprint to improve connection during assembly.

Hi Chris, The audio processing chain of AudioMoth from 1-4: 1. Microphone 2. Static Hardware amplifier with a voltage gain of 10 3. Adjustable software amplifier with an adjustable voltage gain, ranging from 0.33 to 30 4. ADC - AudioMoth uses a 2.5V reference voltage on the ADC, meaning 2.5V is the highest signal level the ADC can convert. Recordings are centered at 1.25V, so I assume the zero-to-peak voltage of AudioMoth is ±1.25V. I hope this helps. You may need to get in touch with the PAMGuide developers to see how this corresponds to the PAMGuide parameters and settings. Thanks, Andy

As the external mic is affected, it is likely there is corrosion to other parts of the circuitry making the device difficult to save.

The internal MEMS mic will most likely be permanently damaged due to the water exposure. Is the silent noise present when using the external mic as well?

Can you see if ‘Local Security Authority protection’ is enabled in the Windows Security / Device security control panel. Try switching that off and rebooting. Enabling it stops the app. Turning it off - the default setting - and rebooting starts the app working again. You must reboot the PC though.

Could you type ‘Device Manager’ in the start menu? Then compare what you see against these examples.

That's great, this is what I would expect meaning the device is working. The strange times are due to the time not being set on the AudioMoth and the CONFIG.TXT is an output file that is generated by AudioMoth, it shouldn't be edited. Thanks for sharing the screenshot, we'll have a look at this on a Windows 11 machine and get back to you.

Could you share a screenshot? Are there any links you can follow on the pop up window. If you put an SD card in the device, does it record when the switch is in DEFAULT mode?

Thanks for trying that. Does it appear in the device manager as a USB device?

Might be worth trying another cable if you can just to make sure we can rule that out. If you are still having no luck with the cables, could you check the Device Manager and see if AudioMoth is listed as a USB device. Sometimes old Windows 10 USB drivers conflict with AudioMoth and need deleting, such as EasyLog. But most often it is a cable issue.

The most common cause of this is USB cable issues, has your new cable worked before or on another device? Have you recently updated to Window 11?