Hi, sorry it doesn't catch a ping pong ball, it finds it on the table, picks it up and puts it in a box.
The title of the video "PC BASED robot arm" , so a bit more than an arduino and a camera would be needed.
In fact the PC would be doing most of the work, an Arduino would probably be to control the servos.
I see a 40pin chip on a bit of PCB but that is probably an interface circuit.
Do you have any programming or electronic experience?
This project was a University diploma project and involves image processing, not a simple learn in 5 minutes Saturday arvo project.
Tom........ 