____________= hi
______ can i give me shema for this projet
______ arduino pin + how to connect servo
waiting your answer pleas
Hi
It would help if you linked us to where you got this but.
I'd say go to Maker when you saw it , read the article and contact the Maker or author if you need info.
Tom.... 
stepper motors
get one to work on the bemch and the rest will make sense.
How come I saw a video of that exact same device in another Thread yesterday - yet the OP has only 1 post as I write this?
...R
Stepper Motor Basics
Edited to add link
probably for the same reason we see 2 or 3 posts about how to sequence LEDs with a set of switches
the fact that the site and other videos are in German does not help.
but it only has 2 steppers and a servo.
there is no need for a schematic, just connect 2 stepper drivers, 2 steppers and a servo.