A remote controlled pan-tilt camera system using a Raspberry Pi.
I used a Raspberry Pi 2 with a servo control HAT, mounted inside a 3D-printed case, with a pan-tilt unit stuck on top:
I wrote a Python program to control the pan-tilt unit, while also displaying the image from the camera. The code for this is available on GitHub. Using VNC, I was able to control and view the camera remotely.