Hello!
I'm looking for - with great interest

information for the following problem:
(in ARDUINO or Processing?)
- A person enters a room
- Whose position and movement is detected by sensors (PIR, Ultrasonic Parallax, Videocam?)
- And controls reasonably proportional to the movement of the person
- A servo or stepper motor
- Which in turn e.g. a camera (only horizontal) in the direction of the person moves / rotates and actionable.
Can anyone help me in the right direction?
Thanks for the tips and many thanks