Hi.
Not sure where to search, so hope you can help me.
I finish my project and need to know can i upgrade two small machines in Company to do part of job.
I working in that company and this will help allot.
This project working with 2 push buttons, stepper motor nema 34, arduino uno and arduino software.
This will not go to public and we will not sell.I t is only for us to help two workers.Thank you for yor thime.
I think you need to supply a lot more information about your project before anyone can truly help.
What will these devices do and how do you want them to do it and please provide as much information as you can ?
Thank you for replay.
Hire is video of 1 example.
in video 2:04 you will see what man doing with left hand.
I will upgrade that part with belt and pulley
and with arduino and stepper motor turn CW and CCW.
I need to know can i use arduino is it legal if is only for us.
We will call person to check how safe it is that project.
OK the video explains quite a lot.
You could use an Arduino for that function I am sure.
Arduinos are "open source" and I suggest you read a little about that.
In essence it means you can do with it almost anything you wish legally and without repercussions.
Mu only concern is that you should also incorporate some form of emergency release option into whatever you build maybe add extra contacts into the foot-switch so if the operator takes his foot off it self retracts or if the "E STOP" is hit it also self retracts.
I think its a good use of Arduino type hardware and wish you luck with it.
Thank you. 
I did, I have emergency switch and limit switches. Arduino is amazing.