This is my first post here as I recently came into possession of an arduino UNO- haven't done a project yet either (and i have very little electronics knowledge, but a lot of desire to learn!).
Out of curiosity, would it be possible to use my UNO to power (perhaps with some kind of amplification) 4 or 5 ultrasonic transducers mounted under a stainless bin at a specific frequency- say 44kHz?
Having it on a timer would be nice too, but at first, just being able to turn it on and off would be a great start. Any words of wisdom on what addons- I should look into tracking down?