Can you use AccelStepper with Arduino Motor Shield Rev 3?

[Per Ejeklint]

Heya, total newbie on stepper motors here. Can you use this library with Arduino Motor Shield rev 3? I've tested a little but am not sure how to configure AccelStepper with this shield. I have a 4 wire bipolar stepper motor I want to drive. It *kind of* works, but not as smooth as I think it should.

Anyone has some insight to share? How do I initialize the AccelStepper for this board?

/Per

[Mike McCauley]

Hi,

If its kinda working but not smoothly, you may have your wiring sequence wrong
way round.

See http://www.stepperworld.com/Tutorials/pgBipolarTutorial.htm

Cheers.

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Mike McCauley mi...@open.com.au
Open System Consultants Pty. Ltd
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[Ejeklint Per]

I figured it out, eventually. Initialize with

AccelStepper stepper(2, 12, 13); // dir_a and dir_b pins used

and set the pwm outputs to HIGH and brakes to LOW in the setup function. Now it works just fine.

/Per

[tony]

What exactly did you do to get your stepper to work with the official arduino motor shield? i have a 4 wire nema 17 stepper motor and i'm trying to hook it up to the A, and B terminals on the board. 

[jowan sebastian]

took me a while !

but so glad to :

A - get rid of the very limited arduino stepper.h and use adaindusties accelstepper
B - be able to use actually use the 'official' arduino stepper shield for more than turning a motor round or thowing it in the bin




#include <AccelStepper.h>

AccelStepper stepper(2,12,13);

const int pwmA = 3;
const int pwmB = 11;
const int brakeA = 8;
const int brakeB = 9;


void setup()
{ 
 
  pinMode(pwmA, OUTPUT);
  pinMode(pwmB, OUTPUT);
  pinMode(brakeA, OUTPUT);
  pinMode(brakeB, OUTPUT);
 
  digitalWrite(pwmA, HIGH);
  digitalWrite(pwmB, HIGH);
  digitalWrite(brakeA, LOW);
  digitalWrite(brakeB, LOW);
 
  stepper.setMaxSpeed(200);
  stepper.setSpeed(200);
 
  stepper.setAcceleration(200);
  stepper.moveTo(300);
 
 
}

void loop(){ 

  if (stepper.distanceToGo() == 0) {
    stepper.run();                   // let the AccelStepper to disable motor current after stop
    delay(2000);                     // wait 2 sec in final position
    stepper.moveTo(-stepper.currentPosition());
  }
  stepper.run();

}