Stepper Motor Step Accuracy Issues

Other Hardware Motors, Mechanics, Power and CNC
41

Please post your images here. You clearly know how.

Forum was not displaying the images inline from imgur.com, hence I posted the links.
Fixed it now. I needed to link to the image location with the extensions.

Code is as follows

// Arduino Digital Pins and Motor Connections
int dPin = 6; // Direction motor || HIGH - Towards the Motor || LOW - Away from the Motor
int sPin = 7; // Step Pin for providing square pulses
int wake = 9; // Sleep Pin || HIGH - Driver Enabled || LOW - Enter Sleep Mode
int M1 = 4; // Mode Pins
int M0 = 5; // Mode Pins
int enb = 8; // Enable Pin for driver || HIGH - Driver Disabled || LOW - Driver Enabled
int rst = 10; // Reset Pin for driver || HIGH - Driver Enabled || LOW - Driver Disabled
int pulsePeriod = 800; // Pulse Period for the Step Waveform
char input;

// Following parameters can be changed in the tests
int delayTime = 0; // Delay between Each Step in milliseconds
int nMoveSteps = 200; // Testing with values 100, 200, 400, 800, 1000

void stepMotor(boolean dir, int nSteps, int dirPin, int stepPin)  // Input - Value for Direction Pin, Number of Steps to be moved pins, uC Pins for direction and step
{
  digitalWrite(dirPin, dir);    // HIGH - Towards the Motor || LOW - Away from the Motor
  delayMicroseconds(2);
  for (int i = 0; i < nSteps; i++)
  {
    digitalWrite(stepPin, HIGH);
    delayMicroseconds(pulsePeriod);
    digitalWrite(stepPin, LOW);
    delayMicroseconds(pulsePeriod);
  }
}

void setup()
{
  Serial.begin(9600);
  pinMode(dPin, OUTPUT);
  pinMode(sPin, OUTPUT);
  pinMode(wake, OUTPUT);
  pinMode(enb, OUTPUT);
  pinMode(M0, OUTPUT);
  pinMode(M1, OUTPUT);

  // Full Step Mode
  digitalWrite(M0, LOW);
  digitalWrite(M1, LOW);

  // Half Step Mode
  //  digitalWrite(M0, HIGH);
  //  digitalWrite(M1, LOW);

  // One Fourth Step Mode
  //    digitalWrite(M0, LOW);
  //    digitalWrite(M1, HIGH);

  // One Eight Mode
  // digitalWrite(M0, HIGH);
  // digitalWrite(M1, HIGH);

  digitalWrite(enb, HIGH);  // Logic HIGH - Driver Disabled
  digitalWrite(wake, HIGH); // Logic HIGH - Driver Enabled
  digitalWrite(rst, HIGH);  // Logic HIGH - Driver Enabled

  digitalWrite(enb, LOW); // Logic LOW - Driver Enabled
  delay(5000);
}

void loop()
{
  for (int i = 0; i < nMoveSteps; i++)
  {
    stepMotor(HIGH, 1, dPin, sPin);
    delay(delayTime); // For Delay between each step
  }
  delay(5000);
  for (int i = 0; i < nMoveSteps; i++)
  {
    stepMotor(LOW, 1, dPin, sPin);
    delay(delayTime); // For Delay between each step
  }
  while(1)
  {
  }
}