Very professional-looking build... congratulations. Are you able to share the connections of your stepper driver to the Arduino and its related code? Do you have the ability to control drum speed via Artisan software? That would be awesome.
Yes I sell those for Php300k, ex-factory Cavite, Philippines. You can send me a message on FB so we can chat. facebook.com/lester.orense/ - or call me at ++63 906 505 4443