The "thing" I've already bought to tinker with it for the purpose. As said above, it is good really nothing. It only runs with 3 AA batteries, making it "tremendous" racket at night. When I looked at the unit time from the inside, I know why. A small motor drives a hub via a rubber belt. This may be nothing meaningful. When I then also realized yet that charging batteries contain only 5-6 hours of run time, I had to change something. Quick measured the voltage and installed an old, matching transformer instead of batteries. Now it runs on electricity from the can and is still "beautiful" to look at. It must be said also that the projector does not project any more beautiful star at a distance of 3 meters. So let rattle off in the corner and the toy.
