Trying to control 2 steppers independently

Projects Programming
1 
// Include the AccelStepper library:
#include <AccelStepper.h>

#define dirPin1 8   
#define stepPin1 9
#define dirPin2 10
#define stepPin2 11
#define motorInterFaceType 1

AccelStepper stepper = AccelStepper(motorInterFaceType, stepPin1, dirPin1);
AccelStepper pusher = AccelStepper(motorInterFaceType, stepPin2, dirPin2);

void setup() {
// Set the maximum speed in steps per second:
stepper.setMaxSpeed(1000);
pusher.setMaxSpeed(1000);
Serial.begin(9600);
}

void loop() {
  // Set the current position to 0:
stepper.setCurrentPosition(0);
pusher.setCurrentPosition(0);
 while(stepper.currentPosition() != 100)
  {
    stepper.setSpeed(400);
    stepper.runSpeed();
  }
	delay(1000);
  stepper.setCurrentPosition(0);
  while(stepper.currentPosition() != -100)
  {
    stepper.setSpeed(-400);
    stepper.runSpeed();
  }
	delay(5000);
  stepper.setCurrentPosition(0);
  while(pusher.currentPosition() != 200)
  {
    pusher.setSpeed(690);
    pusher.runSpeed();
  }
	delay(1000);
  }
  pusher.setCurrentPosition(0);
  while(pusher.currentPosition() != -200)
  {
    pusher.setSpeed(-690);
    pusher.runSpeed();
  }
	delay(5000);
  pusher.setCurrentPosition(0);
}

When i run the i get error message exit status 1

Compilation error: 'pusher' does not name a type

Can anyone help me please. Trying to control 2 motors on 2 A4988 drivers independently. I can control them individually but i am struggle to use them in the same program.

2

If you Auto format the sketch in the IDE you will see that you have code outside of any function after the closing brace of the loop() function

    }
    delay(1000);
}
pusher.setCurrentPosition(0);
while (pusher.currentPosition() != -200)
3

Where did the sketch come from?

4

If you use the IDE autoformat tool (ctrl-t or Tools, Auto format) you can see where you have a misplaced curly bracket (}) that closes loop early. The code after the misplaced bracket is outside of any function which results in the error.

// Include the AccelStepper library:
#include <AccelStepper.h>

#define dirPin1 8
#define stepPin1 9
#define dirPin2 10
#define stepPin2 11
#define motorInterFaceType 1

AccelStepper stepper = AccelStepper(motorInterFaceType, stepPin1, dirPin1);
AccelStepper pusher = AccelStepper(motorInterFaceType, stepPin2, dirPin2);

void setup()
{
   // Set the maximum speed in steps per second:
   stepper.setMaxSpeed(1000);
   pusher.setMaxSpeed(1000);
   Serial.begin(9600);
}

void loop()
{
   // Set the current position to 0:
   stepper.setCurrentPosition(0);
   pusher.setCurrentPosition(0);
   while (stepper.currentPosition() != 100)
   {
      stepper.setSpeed(400);
      stepper.runSpeed();
   }
   delay(1000);
   stepper.setCurrentPosition(0);
   while (stepper.currentPosition() != -100)
   {
      stepper.setSpeed(-400);
      stepper.runSpeed();
   }
   delay(5000);
   stepper.setCurrentPosition(0);
   while (pusher.currentPosition() != 200)
   {
      pusher.setSpeed(690);
      pusher.runSpeed();
   }
   delay(1000);
//}  extra } closes loop() early
   pusher.setCurrentPosition(0);
   while (pusher.currentPosition() != -200)
   {
      pusher.setSpeed(-690);
      pusher.runSpeed();
   }
   delay(5000);
   pusher.setCurrentPosition(0);
}
5

No where i am just learning it.

1 Like
6

The AccelStepper library has a class called MultiStepper to move motors simultaneously. Unfortunately it does not use acceleration so speed is limited.

I find the MobaTools stepper library easier to use. The movement functions work in the background without having to call a run function (runSpeed) to make them move.

Please describe what you want the code to do, in detail.

7

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