Hello,
I am trying to use the Audiomoth with an external piezo contact microphone (CM-01B from TE Connectivity). I have hard wired the microphone up to the solder pads as per the documentation but I cannot see any signal. I know that the microphone works as I have connected it to other pieces of audio equipment. The internal microphone works ok and I can see a 3V dc offset when measuring between the tip and ground pads.
Is there anything else that I can try? Could it be a compatibility issue with the mic and the input electronics of the Audiomoth?
Thanks for your help