Stepper motor driver A4988 RepRap - green

Index: MOD-02964 EAN: 5904422331351

Stepper motor driver based on the A4988 system. Voltage supply in the range from 8V to 35 V, with maximum current consumption of 1 A per coil. Maximum resolution: 1/16 of a step.

Stepper motor driver A4988 RepRap - green
€2.58
€2.10 tax excl.
Delivery 100 pcs scheduled for 2023-06-16
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Manufacturer: OEM

Description: Stepper motor driver A4988 RepRap - green

Designed for 3D printers chip driver A4988 allows you to control a stepper motor with active limitation of the maximum current.

Sterownik silnika krokowego A4988 RepRap - zielony

 

Despite the fact that the quality of performance of print and soldermask is not high, the controller remains fully operating. In our offer you will also find high quality module A4988 from Pololu company.

 

Connection driver

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 a correct state on the output DIR (e.g. low - momentum clockwise, low - counterclockwise). The driver also has the choice of resolution of the motor operation.

Power supply

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

 

The system can control the motors with a rated voltage lower than the required 8 V. In this case, it is necessary to limit the maximum current through the potentiometer, so as not to exceed the maximum voltage of the motor. For example, for a motor with a resistance of 5 Ohms on the coil and a current consumption of 1 A, the nominal supply voltage of 5 V. Power voltage of 12 V to limit the current, so it does not exceed 1 A.

 

Attention!

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

 

Resolution

The step size is selected via the inputs MS1MS2MS3. Possible settings are shown in the table below. Inputs MS1, MS2 and MS3 have internal resistor pull-down (100 kω).

 

MS1 MS2 MS3 Resolution
low low low Full step
high low low 1/2 step
low high low 1/4 step
high high low 1/8 step
high high high 1/16 step

 

 

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

 

The system has three inputs for monitoring power consumption: SLP EN RESET and their description is in documentation. Please note that the pin RESET to nothing pulled. If not used, you can connect it to the surrounding contact SLEEP.

 

Current limit

The system can control the motors with a rated voltage lower than the required 8 V. In this case, it is necessary to limit the maximum current through the potentiometer, so as not to exceed the maximum voltage of the motor. For example, for a motor with a resistance of 5 Ohms on the coil and a current consumption of 1 A, the nominal supply voltage of 5 V. Power voltage of 12 V to limit the current, so it does not exceed 1 A.

 

Heat

The board was designed so that it can conduct heat when the current consumption is about 1A per coil. If the current is much higher, use an external heatsink to which the assembly can use thermoconductive glue.

Specification of stepper motor driver A4988 RepRap:

  • Motor supply voltage: 8 V to 35 V
  • Current: 1 a max. per coil
  • Voltage digital logic supply: 3 V - 5.5 V
  • Simple control interface
  • Work in 5 different modes: full step, 1/2, 1/4, 1/8 and 1/16 step
  • Ability to adjust the current consumed by the motor with a potentiometer
  • Soldered goldpin connectors

 

Voltage to 8.0 V
Voltage from 35.0 V
Current 1 A
Channels 1
Package width 6 cm
Package height 10 cm
Package depth 1 cm
Package weight 0.004 kg

Same-day shipping

  • Crediting the payment for the order on our account on a business day before 10:00 AM means sending the goods on the same day.
  • All packages are being delivered by GLS Group courier and covered with insurance up to 1200 EUR.
  • You will receive a link to track your package and monitor the progress of delivery as soon as it is shipped.

Terms of delivery 

GLS - zone 1

Austria, Belgium, Croatia, The Czech Republic, Denmark, Germany, Netherlands, Poland, Slovakia 

  • Delivery time: 2-4 days
  • Delivery cost: from 4.18 EUR
  • Insurance: 1200 EUR
GLS - zone 2

Bulgaria, Estonia, France, Hungary, Italy, Latvia, Lithuania, Luxembourg, Portugal, Romania, San Marino, Slovenia

  • Delivery time: 2-5 days
  • Delivery cost: from 5.35 EUR
  • Insurance: 1200 EUR
GLS - zone 3

Finland, Greece, Ireland, Spain, Sweden 

  • Delivery time: 2-7 days
  • Delivery cost: from 7.67 EUR
  • Insurance: 1200 EUR

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Product reviews

Stepper motor driver A4988 RepRap - green

5/5

Average grade

3

Customers opinion
The following opinions are collected
and verified by
an external partner Trustmate
and come from the post-purchase process.
Piotr 01.05.2023 Confirmed purchase
Zbigniew 17.04.2023 Confirmed purchase Translated review
100%...OK
Lesław W. 06.06.2022 Confirmed purchase Translated review
3D printer

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