1. Steppers cannot give feedback but, if you have a known starting position such a a "home switch" that's hit by the carriage, then you can just keep count of steps done. Since the coordinates come from the camera, you only need relative positioning, don't you?2. A block of wood is good to start with. There's also lots of gimbal brackets available from quadcopters and camera stabilisers. A nice gimbal without motors or electronics might be $20-$50.3. Yes.4. Yes.5. I'm not clear on what kind of camera or how you're extracting coordinates from the video but if you think you have that part sorted out already, I'm inclined to believe you.
You may find something useful in these linksStepper Motor BasicsSimple Stepper CodeIf servos are suitable they will be much easier to work with, mechanically, electrically and from a programming point of view. Sail Winch servos can turn about 3 revolutions with position control.If you design a gimbal so that the rotation takes place at the camera's centre of gravity the loads on the motors will be lowest (or use a counter-weight to balance the system)....R
Can you say something less vague than "Relativel fast turning"?Can you also put some sort of figure on the angular accuracy and smoothness required.
Thank you! With my answer above, do you think that servos are more suitable? What are your thoughts?
Please enter a valid email to subscribe
We need to confirm your email address.
To complete the subscription, please click the link in the
email we just sent you.
Thank you for subscribing!
via Egeo 16