Microstepping for Stepper Motors - Linear Motion Tips
Microstepping Motor Drives, Analog in/Step & direction control
Why microstepping in stepper motors isn't as good as you think - EDN
CNC Digital Microstep driver DM542 Stepper Motor Controller 2-phase Digital Stepper Motor Driver 20-50V DC Max 4.2A for Nema 17, Nema 23 and Nema 34 series stepper motor, Replace M542 M542H - - Amazon.com
Microstep Stepper Motor Driver | Stepper Motor Driver Dm860h - Stepper Motor Driver - Aliexpress