2DOF Motion Plattform

Hello everyone,

in this video I tried to build a Motionplattform for my VR Headset. But I made a lot of mistakes and it did turn out as expected.
I used a nema23 and an Arduino Mega.

I do not have a clue as to what you want us to tell you. You made a lot of mistakes and it did not turn out as expected. That is normal, then you start the debugging process. I have no idea if you used the correct parts, you show no calculations. You do not show a Schematic, you do not show Code etc. Hint: if you answer some of the above questions, define your problem we may be able to help you.