A4988 - stepper motor driver

Driver bipolar stepper-motor - A4988 is powered by a voltage 8 - 35 V.

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In stock, shipping 24 hours!

Price 19,90 zł


  • Simple interface to manage the steps and direction
  • Work in 5 different step resolution: full step, 1/2, 1/4, 1/8 and 1/16 step

  • The motor supply voltage is 8 - 35 V and a current of 2 A in coil




Fig. 1. Connecting controller with a microcontroller.



To power the logic part of the module requires a voltage in the range 3V to 5.5 V, which should be brought into contact VDD. Voltage motor supply range from 8V to 35V is supplied to pin UMOT.


The connection and disconnection of the engine, while the driver could damage the driver. 



The step size is selected via the inputs MS1, MS2, MS3. Possible settings are shown in the table below. Inputs MS1, MS2 and MS3 have internal resistor pull-down (100kOm).



lowlowlowFull step
highlowlow1/2 step
lowhighlow1/4 step
highhighlow1/8 step
highhighhigh1/16 step



Other inputs

One pulse on the specified pin STEP causing one step of the motor in the direction selected by making the appropriate logic state on the output DIR. Conclusions STEP and DIR are not internally pulled up. If the motor needs to rotate in only one direction pin DIR can be permanently connected to VCC or GND.


The system has three inputs for monitoring the power consumption: RST SLP and EN their description is in the documentation. Please note that the pin RST is not what fit. If not used, you can connect it to the surrounding contact SLP.


The range also includes a module with A4988 driver


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.