Making your own powerful Controller on the cheap side - Upgrades - Inventables Community Forum
Control 4 steppers with Arduino Uno/Due and CNC Shield
3 Axis Arduino Grbl Stepper Motor Control Pre Assembled Pkg - Zen Toolworks, Inc.
GitHub - cguerrero1205/LCD_GRBL: Offline controller for CNC with GRBL 1.1
Raspberry Pi Alamode CNC Controller - Use Arduino for Projects
Making your own powerful Controller on the cheap side - X-Carve / Upgrades - Inventables Community Forum | Cnc controller, Diy cnc router, Free cnc software