A4988 Stepper Motor Driver Up to 2 Amps

40 EGP

## Product Description The A4988 Stepper Motor Driver provides five different step resolutions: full- step, half-step, quarter-step, eight-step in addition to, sixteenth-step. Also, it has a potentiometer for adjusting the current output. Furthermore, the A4988 Stepper Motor Driver has over-temperature thermal shutdown protection, and crossover current protection. The A4988 Stepper ... more on TechDepot Egypt

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Product Details

  • The best price of A4988 Stepper Motor Driver Up to 2 Amps by TechDepot Egypt in Egypt is 40 EGP
  • Available payment methods are
    Cash on Delivery
  • Delivery fees are 35-45 EGP, with delivery expected within 5+ day(s)
  • Similar products to A4988 Stepper Motor Driver Up to 2 Amps are sold at Future Electronics, RAM Electronics, El Gammal Electronics with prices starting at 55 EGP
  • The first appearance of this product was on Jul 31, 2016

Technical Specifications

Weight:5 g

TechDepot Egypt's Description

Product Description

The A4988 Stepper Motor Driver provides five different step resolutions: full-step, half-step, quarter-step, eight-step in addition to, sixteenth-step. Also, it has a potentiometer for adjusting the current output. Furthermore,  the A4988 Stepper Motor Driver has over-temperature thermal shutdown protection, and crossover current protection.

The A4988 Stepper Motor Driver logic voltage is from 3 to 5.5 V and the maximum current per phase is 2A. Accordingly, if you provide a good heat sink or a cooling fan, it can take up to 2 amps of continuous current. Otherwise, 1A continuous current per phase without heat sink or cooling.

A4988 Stepper Motor Driver Specifications

  • Minimum operating voltage: 8 V
  • Maximum operating voltage: 35 V
  • Continuous current per phase: 1 A2
  • Maximum current per phase: 2 A3
  • Minimum logic voltage: 3 V
  • Maximum logic voltage: 5.5 V
  • Microstep resolutions: full, 1/2, 1/4, 1/8, and 1/16

A4988 Stepper Motor Driver Connectivity

First of all, before you connect the motor you should adjust the current limiting of the driver so that you are sure that the current is within the current limits of the motor. You can do that by adjusting the reference voltage using the potentiometer on the board and considering this equation:

Current Limit = VRef x 2

Where VRef is the voltage measured between the potentiometer metal body itself and GND.

Please read the datasheet carefully before using this driver.

Code

// Simple Stepper Motor Control Example Code // by Dejan Nedelkovski, www.HowToMechatronics.com // Defines pins numbers const int stepPin = 3; const int dirPin = 4; int customDelay,customDelayMapped; // Defines variables void setup() { // Sets the two pins as Outputs pinMode(stepPin,OUTPUT); pinMode(dirPin,OUTPUT); digitalWrite(dirPin,HIGH); //Enables the motor to move in a particular direction } void loop() { customDelayMapped = speedUp(); // Gets custom delay values from the custom speedUp function // Makes pules with custom delay, depending on the Potentiometer, from which the speed of the motor depends digitalWrite(stepPin, HIGH); delayMicroseconds(customDelayMapped); digitalWrite(stepPin, LOW); delayMicroseconds(customDelayMapped); } // Function for reading the Potentiometer int speedUp() { int customDelay = analogRead(A0); // Reads the potentiometer int newCustom = map(customDelay, 0, 1023, 300,4000); // Convrests the read values of the potentiometer from 0 to 1023 into desireded delay values (300 to 4000) return newCustom; }

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