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

Index: SPF-01971

Stepper motor controller based on A3967 system. Powered from 7 - 30 V, with a maximum current draw of 0.7 A per coil. Maximum resolution: 1/8th step.

€12.09
€9.83 tax excl.
Na zamówienie. Czas oczekiwania ok. 4-8 tyg.
Waiting for delivery
30-day returns
Manufacturer: SparkFun
Compatibility: Arduino Raspberry Pi

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

The system allows to control the stepper motor with a device allowing to generate logical states e.g. Arduino, STM32Discovery , Raspberry Pi. The module is very simple to use and is compatible with 4, 6 and 8-wire stepper motors.

The system can be configured to work with 3.3V. For this purpose, a jumper marked 3/5V must be soldered.

Connection of the controller

The motor's dischargevoltage should be connected to the outputs marked PWR IN - positive pole M+, GND ground. The stepper motor outputs are connected to the MOTOR pins - coil A and B. Control is carried out through the DIR(direction) and STEP (step ) pins. If the striking signals are supplied from a source other than themotor voltage, the control system ground should also be connected to the GND pin.


In order to turn the motor one step at a time, the STEP output should have a high state (logical one), the next sequence of zeroes and ones will move the motor by another step, etc. The direction is selected by entering the appropriate state on the DIR output (e.g. low state - clockwise rotation, high state - opposite). The controller also has the ability to select theresolution of the motor.

Detailed description together with sample code for Arduino can be found at this address.

Attention!

Connecting and disconnecting the motor while the controller is on can damage the system.

Resolution of the stepper motor controller

The step size is selected using the inputsMS1, MS2. The possible settings are shown in the table below. Inputs MS1, MS2 and MS3 have a built-in pull-up resistor (10 kOm), so by default the chip operates in 1/8th step mode.

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

Current limitation

The Easy Driver module allows for active current limitation by means of a potentiometer. One of the ways to introduce the limitation is to set the controller to full step mode and to measure the current flowing through one coil without giving a signal to the STEP input.

EasyDriver stepper motor controller specification A3967

  • Motor supply voltage: 7 V - 30 V
  • Current: max 0.7 A per coil
  • Simple control interface
  • 5 different modes of operation: full step, 1/2, 1/4, 1/8
  • Possibility to adjust the current drawn by the motor by means of a potentiometer
  • The module is compatible with 4, 6 and 8-wire stepper motors
  • Control is by 5 V or 3.3 V signals (after soldering the jumper)
  • Module dimensions: 48 x 11 mm

Same day shipping

Posting the payment for the order on our account on a business day up to 10 AM means sending the goods on the same day!

The time of payment depends on the ELIXIR's hours session of the sender's bank and the recipient of the transfer. It may take up to 2-4 working days.

Free delivery for orders exceeding 300 PLN!

Only for prepaid orders shipped to Poland.

Terms of delivery outside of Poland

GLS - zone 1

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

  • Delivery time: 2-4 days
  • Delivery cost: 35 PLN
  • Insurance: 5000 PLN
GLS - zone 2

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

  • Delivery time: 2-5 days
  • Delivery cost: 50 PLN
  • Insurance: 5000 PLN
Kurier GLS - zone 3

Finland, Greece, Ireland, Sweden, Cyprus, Malta, Spain

  • Delivery time: 2-7 days
  • Delivery cost: 80 PLN
  • Insurance: 5000 PLN

Terms of delivery in Poland

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Poczta Polska
  • Delivery time: 1-3 days
  • Payment in advance: od 9,90 PLN
  • Cash on delivery: 17,90 PLN
  • Insurance: 1000 PLN
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Kurier GLS
  • Delivery time: 1-2 days
  • Payment in advance: od 14,90 PLN
  • Cash on delivery: 22,90 PLN
  • Insurance: 6000 PLN
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Paczkomaty 24/7
  • Delivery time: 1-3 days
  • Payment in advance: od 12,90 PLN
  • Over 8000 parcel lockers
  • Insurance: 200 PLN
  • Free delivery of orders over 300 PLN does not apply to parcels addressed outside of Poland.
  • The delivery period is counted in working days from the date of dispatch of the order.

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