Mechanisms and Mechanical Devices Source Book
Chapter 1 Motion Control Systems
Stepper Motor Basics gekodrive
motion control machinedesign.com
Timing Belts and pulleys (sdp-si.com)
Allegro Stepper Motor Drivers
A3967
A3982
A4985
LinuxCNC
GRBL
Arduino Stepper Shield
Mach3
Stock Drive Products
Maker Slide Store
McMaster-Carr
Bell-Everman belt drive
Jameco