Wiper system with AccelStepper and a DRV8825

[cjb]

Hi,

I am working on a project where a digital signal is sent to an Arduino Uno to run a stepper motor forward for a distance and back to its original point. When it reaches the original point it stops. I can get it to do one cycle after I download the program but when I send the start signal again it tries to go the wrong direction. The start signal is controlled by a relay connected to a robot. I also have the power for the stepper on the relay.

Any help would be greatly apricated.

[bobcousins]

We can't help unless you post your code, at least.

[cjb]

#include <AccelStepper.h>

// Define pin connections
const int dirPin = 2;
const int stepPin = 3;
const int start = 4;


// Define motor interface type
#define motorInterfaceType 1

// Creates an instance
AccelStepper myStepper(motorInterfaceType, stepPin, dirPin);

void setup() {
  pinMode(start, INPUT);
  // set the maximum speed, acceleration factor,
  // initial speed and the target position
  myStepper.setMaxSpeed(800);
  myStepper.setAcceleration(100);
}

void loop() {
  // Set the target position:
  if (digitalRead(start) == HIGH) {
    myStepper.moveTo(5985);  // Run to target position with set speed and acceleration/deceleration:
    myStepper.run();

   if (myStepper.currentPosition() == 5985)
    myStepper.moveTo(15);
    myStepper.runToPosition();

   if (myStepper.distanceToGo() == 0)
    myStepper.stop();
}
   if (digitalRead(start)==LOW)
    myStepper.setCurrentPosition(0);
}

[cjb]

I fixed it.
Thank you for looking.