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The original was posted on /r/nixos by /u/JuliusFIN on 2023-09-28 11:23:01.

Hey everyone!

I just wanted to share our project called Hydrophonitor (a hydrophone monitoring system) that we use here in northern Norway in order to listen to whales (mainly sperm whales in our case) as we do research in cetacean acoustics.

We recently switched to using NixOS in order to configure our system. Right now our target platforms are Raspberry Pi 3 and 4, but we might be using other boards in the future.

The system in a nutshell:

• Records multi-channel audio from the hydrophones via a DAC.

• Records GPS using an external module.

• Records depth using a pressure sensor.

• Keeps track of time using a RTC (real time clock) module.

Here’s a link to the repository

Hope you find it interesting! Any feedback or suggestions are more than welcome.