PI Zero W 2 - Additional Instructions

[KJ7PPK]

Hey everyone, I wrote the latest 64-bit RPi OS LITE image on a 32GB microSD card with the official RPi Imager application to use in my Pi Zero 2 W and there were a few things not noted that I had to figure out for myself...

1. In the existing reference to Pi Zero 2 W installation, the provided 3 commands to expand swap space and turn off the Wi-Fi power saving function will error out on a headless Pi Zero 2 W installation as the /etc/rc.local file will not exist.
2. I had to create this file with "sudo nano /etc/rc.local" and populate with the following lines:
   #!/bin/sh -e
   COMMANDS
   exit 0
3. Set permissions on that file using "sudo chmod u+x /etc/rc.local" and then run the third line provided in the guidance.

During installation from Nachtzuster's repo, I kept getting an "OS error out of space" message. This was due to pip seeing that /tmp was out of space. I was able to increase this by running: "sudo mount -o remount,size=5G /tmp/"

After this, I had to run the script from the repo (/scripts/uninstall.sh). Then, "sudo rm -r /home/USERNAME/BirdNET-Pi".

After all of this, I was able to run the one-liner bash command and successfully install the application.

Final note: Despite Alsamixer showing the correct default device, I could not get my USB sound card input to work in the application. I started from scratch with the sound card installed and it worked out fine.

Another note.... the performance is less than optimal. My recommendation is to run BirdnetCAGE in a docker container on a capable machine, then setup ffmpeg audio streams with your cheap pi zero hardware streaming to said server. The Zero devices will just function as a collection means and the server can do all the heavy lifting. I promised my lady a functional BirdnetPI setup this weekend and I'm currently doing a 24TB disk clone on the server, so this will do for now. Great way to dip your toes in.

[heyho74]

Thanks for this, I posted on the old page but have had no responses, but this is the information I've been looking for.

When you say you started from scratch to get the soundcard working, do you mean just the birdnet software, or Pi OS?

[DSRZH]

thanks @brokensolenoid for your tipps. I also could apply them. birdNET is now up and running on a Pi Zero 2 W.
I'm not deep into programming so did't understand how to (/scripts/uninstall.sh), but it works also without uninstall.
PS: a half year ago these steps where not necessary. at this time i made my last installation on another Pi Zero 2 W.

[Award1000]

Thank you for this. That change on remounting the tmp directory worked. No need to reinstall. Just re-ran the install script.

[Grey-Lancaster]

it appears that you have to let an install fail before you can do this
"sudo mount -o remount,size=5G /tmp/"

Is there a better way?
Thanks,
Grey