I think it changes directions on its own. The first time I clicked in here I looked at it and it was going clockwise. Then I read down all the posts and went back and looked. I got it to switch by staring at it which, of course, took a number of seconds to get it to do.
Well now I watch it without starring and it changes direction on its own. It seems to spin one way for about 15 seconds and then the other for 15 seconds, then switches again for a number of seconds and then back again.
I definitely think it does it on its own.
