My current project has a thin object spinning on a motor. The object has a laser on it. Basically I want to be able to turn the laser on and off remotely. As the object is spinning a wire to the Arduino is out of the question because of the wire twisting. Also because the object is thin, I don’t want to have to put an independent chip on it (as I will already have a battery and I want to keep as much of the originl shape as possible).
Is there a way to turn the laser on and off without a switch on the object itself and without having the independent chip?
Any help would be greatly appreciated.