MrDEB
Well-Known Member
Have a request for a bat repellent device. Back to this circuit using a 9v 200 ma wall wart and Audios suggested circuit for the LM386
outputting to a piezo tweeter.
any other suggestions before I etch a circuit board?
want to add an LED to indicate when the unit is outputting ultrasonic sound every 5 minutes for 1 minute.
outputting to a piezo tweeter.
any other suggestions before I etch a circuit board?
want to add an LED to indicate when the unit is outputting ultrasonic sound every 5 minutes for 1 minute.