Quantity   Component name
1 × Servo Pan/Tilt kit https://www.aliexpress.com/item/PT-Pan-Tilt-Camera-Platform-Anti-Vibration-Camera-Mount-for-Aircraft-FPV/32532784948.html?spm=2114.search0304.4.19.kdo15l
4 × LDRs ...and 4x resistors to form potential dividers for Arduino analogue inputs.
1 × Your favourite Arduino I used an Uno, just because it's what I had.