EasyDriver A3967 - stepper motor driver - 30V 0.7A - SparkFun ROB-12779

Stepper motor driver opraty on the system A3967. Supply voltage 7 - 30 V with a maximum current consumption 0.7 A per coil. Maximum resolution: 1/8 of step.

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Czas oczekiwania: ok. 10-30 dni

Price 52,00 zł

Product description: A3967 EasyDriver stepper motor driver 30V 0.7 A - SparkFun ROB-12779

The system allows you to control a stepper motor using a device that allows you to generate the logical state, for example, Aa rduino, STM32Discovery, Raspberry Pi. The module is characterized by a very simple operation, compatible with engines krokowymi 4, 6 and 8 wired.



The system can be configured to work with voltages of 3.3 V. this requires dolutować the jumper marked with 3/5V.

Connection driver

Voltage zasalania of the motor must be connected to terminals labeled PWR IN - the positive pole of M+, the mass GND. The findings of the stepper motor are connected to the contacts of the MOTOR - coil A and B. Control is via pins DIR (direction) and STEP (step). In the case when signals strujące feed from a different source than the voltage for the motor you must also connect the ground of the control system to terminal GND.


In order to rotate the motor one step, you must specify the STEP output high (logical unit), another sequence of zeros and ones moves the motor one step, etc. the Choice of direction is accomplished by depositing as the output DIR (e.g., low - speed clockwise rotation, high - Vice versa). The driver also has the choice of resolution of operation of the engine.


A detailed description along with sample code for Arduino you can find at this address.



The connection and disconnection of the engine while the driver is turned on can damage the system.

Resolution stepper motor driver

The step size is selected via the inputs MS1, MS2. Possible settings are shown in the table below. Inputs MS1, MS2 and MS3 have a built-in resistor pull-up (10 kω), so by default, the system works in a mode 1/8 steps.


lowlowFull step
highlow1/2 step
lowhigh1/4 step
highhigh1/8 step

Current limit

Easy Driver module allows the active current limit with the potentiometer. One of the ways the introduction of restrictions to set the driver to full step and measuring the current passing through one coil without signal at the input STEP.

Specifications stepper motor driver, EasyDriver A3967

  • The motor supply voltage: 7 V - 30 V
  • Current: 0.7 A max. per coil
  • The simple control interface
  • Work in 5 different modes: full step, 1/2, 1/4, 1/8
  • The ability to adjust the current consumed by the motor with a potentiometer
  • The module is compatible with engines krokowymi 4, 6 and 8 wired
  • The control is performed by signals of 5 V or 3.3 V (after soldering jumper)
  • Module dimensions: 48 x 11 mm



Posting the payment for the order on our account on a business day up to 13:00 means sending the goods on the same day!


The time of payment depends on the hours of ELIXIR session of the sender's bank and the recipient of the transfer (more information on this subject, for example on the website


The table presents available forms of delivery in Poland


Carrier and

Bank wire

by cash


Poczta Polska

terms of service

9,90 PLN17,90 PLN1-3 days

Kurier GLS

terms of service

14,90 PLN22,90 PLN

1-2 days

Paczkomaty 24/7 

terms of service

12,90 PLN-1-3 days

If the amount to pay for products exceeds 500 PLN
Delivery is for free!


  • Free delivery of orders over 500 PLN does not apply to parcels addressed outside of Poland.
  • Free delivery does not apply when changing orders.
  • The delivery period is counted in working days from the date of dispatch of the order.