DevCnc Foam by the devCad Team

If you don't like to assemble your own controller, you can purchase a ready to use Usb controller that already includes the stepper drivers and is fully compatible with Theremino.
This controller is supplied by IdeeGeniali , it's fully tested with devCnc Foam, and is the simplest and safer way to start. IdeeGeniali and the devCad Team are partners, and the development of new and improved features will proceed hand by hand.