Nice but how is arduino incorporated it this?
Have you tried this with a linear hall effect sensor?
QuoteHave you tried this with a linear hall effect sensor?No, I did read up on that as an option but was more confident of getting the optical version working. It probably isn't any harder, but I had to start somewhere!I have plans for a version 2 which could use the hall effect sensor, but would have a much bigger electromagnet! I'd like to be able to suspend a set of 'planet balls' I have of various sizes - Jupiter's about 5 inches in dimeter and would look pretty cool.
blowing air lightly across one side
Maybe one of those tiny toothbrush motors with an eccentric weight powered inductively from the suspension coil?