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Hydromoth real-time output

Is it possible to configure the Hydromoth so it can output in real-time or near real-time detected sounds above a configured threshold. Preferably with a serial RS-232 or RS-485 output signal. Thank you

3 comments

3 Comments

Alex Rogers

Feb 21

Hi, Not at the moment. It's technically possible but would need a significant re-write of the firmware. We would recommend using the AudioMoth USB Microphone and connecting it to a single-board computer such as a Raspberry Pi. The RS-232 would not be fast enough for real-time transmission - a baud rate of 256000 bits per second is only a sample rate of 16kHz which is too low for most applications. The USB connection of the AudioMoth USB Microphone is 10Mbps which allows live recording at 384kHz. You can also install the AudioMoth USB Microphoe firmware on your HydroMoth - https://www.openacousticdevices.info/usb-microphone. However, it's probably easier to use the AudioMoth USB Microphone hardware with an external hydrophone for many applications. Alex

Edited

Alex Rogers

Feb 22

Replying to

I don't think an existing device is available that does that. You could implement it with an AudioMoth with custom firmware or a Raspberry Pi with the AudioMoth USB Microphone connected if you have the power available. The Raspberry Pi is a good option for prototyping as it is quite to develop in Python. However, the power requirements are significantly more than AudioMoth.