Sorry, I'm new, but amazed at the possibilities of arduino.
I'd like to lower an object distance x upon trigger by a piezo. Like a knock lock (a given knock pattern as trigger), but instead of unlocking a door, a stepper motor would need to unwind a string from which an object is suspended. Subsequent piezo trigger would raise the object to its starting point. IOW, person stands at piezo, gives the secret knock, and an object from above is lowered to them. They give the knock again (or a different knock if that's easier) to return the object to its original position.
Is this crazy difficult/expensive to pull off?
Ideally, it would fulfill these additional requirements: Distance x=10' Object is 2-3 pounds Piezo is 10' from arduino
Bonus question: what kind of minimum power supply would this require? The location is remote and so I need to accomplish it with batteries/solar.
Call me crazy, or just point me in the right direction for information about what parts would accomplish this. I appreciate whatever guidance you can provide.. Thanks!