some say it works, some say it's pure fantasy.
- the frequency should range continuosly from 30 kHz to 50 kHz
- it must be powerful, because it should protect a big garden
That would be a more humane solution.
QuoteThat would be a more humane solution.Or lawyers.
Where are all these rats coming from, have you had a good look around the area?
The only thing useful i found was: "Just generate a rectangle signal with a frequency bigger than 20kHz and amplify it by power transistors."the question i have is how to make the rectangle signal with Arduino?