EasyDriver - Stepper Motor Driver

Description: The EasyDriver is a simple to use stepper motor driver, compatible 

with anything that can output a digital 0 to 5V pulse (or 0 to 3.3V pulse if you 

solder SJ2 closed on the EasyDriver). The EasyDriver requires a 6V to 30V supply 

to power the motor and can power any voltage of stepper motor. The EasyDriver 

has an on board voltage regulator for the digital interface that can be set to 5V or 

3.3V. Connect a 4-wire stepper motor and a microcontroller and you’ve got precision 

motor control! EasyDriver drives bi-polar motors, and motors wired as bi-polar. I.e. 4,6, 

or 8 wire stepper motors.

This EasyDriver V4.5 has been co-designed with Brian Schmalz. It provides much more 

flexibility and control over your stepper motor, when compared to older versions. The 

microstep select (MS1 and MS2) pins of the A3967 are broken out allowing adjustments 

to the microstepping resolution. The sleep and enable pins are also broken out for further

control.

Note: Do not connect or disconnect a motor while the driver is energized. This will cause 

permanent damage to the A3967 IC.

Note: This product is a collaboration with Brian Schmalz. A portion of each sales goes 

back to them for product support and continued development.

Features:

• A3967 Microstepping Driver

• MS1 and MS2 pins broken out to change microstepping resolution to full, half, quarter 

       and eighth steps (defaults to eighth)

• Compatible with 4, 6, and 8 wire stepper motors of any voltage

• Adjustable current control from 150mA/phase to 700mA/phase

• Power supply range from 6V to 30V. The higher the voltage, the higher the torque at high speeds

Documents:

• Schematic

• Eagle Files

• Hookup Guide

• Datasheet (A3967)

• EasyDriver Website

• Example Arduino Tutorial in Portuguese

• Bildr Tutorial