Automaticly change the Confidence by specific Time (explanation)

[MueJosh]

Edit: see my latest reply- it works now!
Hey,

Iam about to turn crazy...

The reason why i want to do this:
I have some birds (mainly bubo bubo) which i want to detect (they are near my home).
At the day i have the confidence set to 55 and in the evening I change the value manually in the settings to 35- So it catches all Eagle Owl calls.
I cant set it to 35 all day because that would result in a LOT of false positives, mainly because of daytime sounds (cars, people, ..), in the night it's quiet enough so 35% works fine.

I found the birdnet.conf file and want to change line 129 to confidence=35

My command looks like this

sed -i 's/129/CONFIDENCE=0.35/' birdnet.conf

(Cd to the directory works, I don't really need to because the terminal opens it automatically)

I don't get why this is not working ...

When I have a working command I'll write a shell script to run it
Right now it looks like this (tho it's not working)

#!/bin/bash 

# get file to edit
config_file="/home/vogel/BirdNET-Pi/birdnet.conf"

# change line 129 to new confidence=35
sed -i 's/129/CONFIDENCE=0.35/' "$config_file"

The same thing for confidence =55

As soon as I can get it running I run a cron to run the script at a specific time.

The last night I was trying to get it to work and it robbed all my sleep... Someone please help me 🤪

Maybe there is another (already working) approach?
I would like to keep it simple

Thank you!

[MueJosh]

Ouff... this is how it works!

sed -i '129s/.*/CONFIDENCE=0.35/' birdnet.conf

Edit:

Now the script works 🥰

#!/bin/bash 

# get file to edit
config_file="/home/vogel/BirdNET-Pi/birdnet.conf"

# change line 129 to new confidence=35
sed -i '129s/.*/CONFIDENCE=0.35/' "$config_file"

Now I can start with cron,
I update this Post (discussion- whatever it's called)
See below- I got it to run

[MueJosh]

I got everything running as I intended in the beginning.

Is it the perfect way? Probably not but this was all new to me.

Right now the scripts should turn the confidence from 55% to 35% at 17:30 and vice versa at 06:30

If you want the same thing (or edit it to your preferences) here you go:

1. Create a new File at /usr/local/bin/ and name it the way you like, I named it set_confidencelow.sh. Create a second one for the other command like: set_confidencehigh.sh

   for low paste this in the file:

#!/bin/bash 

# get file to edit
config_file="/home/USER/BirdNET-Pi/birdnet.conf"

# change line 129 to new confidence=35
sed -i '129s/.*/CONFIDENCE=0.35/' "$config_file"

for high:

#!/bin/bash 

# get file to edit
config_file="/home/USER/BirdNET-Pi/birdnet.conf"

# change line 129 to new confidence=55
sed -i '129s/.*/CONFIDENCE=0.55/' "$config_file"

! Change USER to your Username !
These scripts change line 129 in the birdnet.conf file to "CONFIDENCE=0.35" and the other to "CONFIDENCE=0.55"

See picture at the bottom

I don't know if it's needed but I ran these commands so it's executable
birdnetpi:/usr/local/bin$ sudo chmod +x set_confidencelow.sh
birdnetpi:/usr/local/bin$ sudo chmod +x set_confidencehigh.sh

2. Now comes the crontab

I modified my crontab (/etc/crontab ) to add following values:

#config sets confidence to 55 at 6:30 (specified in set_confidencehigh.sh)
30 6 * * * USER /usr/local/bin/set_confidencehigh.sh
#config sets confidence to 35 at 17:30 (specified in set_confidencelow.sh)
30 17 * * * USER /usr/local/bin/set_confidencelow.sh

! Change the "USER" to your username (i think the default is "pi") !

Check out the picture at the bottom to see the whole thing.

It should be self explanatory, if not let me know.

To edit this file you need to type these command one by one:
cd /etc
sudo nano ./crontab
Now you can paste the lines at the bottom
**Dont delete the already existing lines! **
ctrl^o writes the file
ctrl^x to exit

Aaaand that's it.
If you have any ideas to improve my code or file directory, pls let me know. (I did all of this stuff the first time)

The next big step would be to implement this into the tools- settings bar on the homepage. So I can set the time and confidence without the need to edit files (see picure at the end).
But I have zero clues how this would work.

My dream 💭