Thanks.I should of mentioned two other things also.
1.) When I tried the motor I had set it to 255. But that didn't anything obviously
2.) When the camera picks up the light, it will slowly (but jumply, and jitterly) tilt upwards. As it does this, the red light blinks, instead of steadily staying on. So I suspect that it only is locked on momentarily to light, not giving enough time change the values of the pwms(?).
Sorry I didn't mention this in the first post.
