I've got a bit problem with rats, they are destroying my garden. I don't want to kill them, just keep them away. So, I would like to build a rats repellent circuit. I've read a lot on the topic; some say it works, some say it's pure fantasy. I'll like to try :)
I found different circuit schemas around the web (like http://chill-blogspot.blogspot.it/2009/07/ultrasonic-pest-repeller.html) but I would like to solve the problem using Arduino.
- the frequency should range continuosly from 30 kHz to 50 kHz
- it must be powerful, because it should protect a big garden
It's that possible? Anyone has already tried that?
Thanks a lot.