Technical summary
The EasyDriver is a simple stepper motor controller, compatible with anything that can produce a 0 to 5V digital pulse (or 0 to 3.3V if you solder SJ2 on the EasyDriver).
EasyDriver requires a 7V to 20V supply to power the motor and can power any stepper motor voltage. 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 have precision motor control! EasyDriver drives bi-polar motors, and motors wired as bi-polar. I.e. 4.6, or 8 wire stepper motors.
Note: Do not connect or disconnect a motor while the driver is powered. This will cause permanent damage to the A3967 integrated circuit.
Specifications:
Based on the A3967 integrated circuit
MS1 and MS2 pins broken out to change the 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 750mA/phase
Supply range from 7V to 20V. The higher the voltage, the more torque at high speed
