©2019 Open Acoustic Devices

May 12

Adapting external microphone to Audiomoth

2 comments

Edited: May 12

We would like to use the Audiomoth as a recording platform for adapting some ultrasound microphones to it (the Bufo or Myotis from our Sonitor system) to get low-noise recordings.

 

I would like to know whether in principle, it is possible to de-solder the built-in microphone (or install a switch, simply) to connect another microphone (like the Knowles SPU0410LR5H-QB or Vesper''s VM1000) to the PCB even though those microphones' native sensitivity would be much lower than the built-in microphone's, around -38 dB.

 

Are the pre-amps on the Audiomoth strong enough to boost the signal to an acceptable level? If it worked, we would be keen to show that the Audiomoth can be expanded with this open-source mic system. We would like to show that in an upcoming new version of our aforementioned article for which we would be glad to get new collaborators involved.

Hi, The next version of AudioMoth which we are working on now and will hopefully be out early next year will support external microphones. In principle you should be able to modify the PCB to accept any microphone. Alex

These are excellent news Alex, thanks! Could you disclose more information about what kind of interface (connector, solder pads) would be used?

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