Stepper motor Speed and Direction Control using TP6600 driver and Push buttons

            CODE 

// Stepper Pins

const int stepPin = 5;  

const int dirPin = 2;  

const int enPin = 8;

// Buttons

const int btnCW = 9;

const int btnCCW = 10;

const int btnSTOP = 11;

// Potentiometer

const int potPin = A0;

int speedDelay = 500;

bool motorRunning = false;

bool direction = HIGH;

void setup() {

  pinMode(stepPin, OUTPUT);  

  pinMode(dirPin, OUTPUT);

  pinMode(enPin, OUTPUT);

  pinMode(btnCW, INPUT_PULLUP);

  pinMode(btnCCW, INPUT_PULLUP);

  pinMode(btnSTOP, INPUT_PULLUP);

  digitalWrite(enPin, LOW); // enable driver

}

void loop() {

  // Speed control

  int potValue = analogRead(potPin);

  speedDelay = map(potValue, 0, 1023, 100, 1000);

  // Button press detect (one click)

  if (digitalRead(btnCW) == LOW) {

    direction = HIGH;

    motorRunning = true;

    delay(20); // debounce

  }

  if (digitalRead(btnCCW) == LOW) {

    direction = LOW;

    motorRunning = true;

    delay(20);

  }

  if (digitalRead(btnSTOP) == LOW) {

    motorRunning = false;

    delay(20);

  }

  // Run motor if enabled

  if (motorRunning) {

    digitalWrite(dirPin, direction);

    stepMotor();

  }

}

// Step function

void stepMotor() {

  digitalWrite(stepPin, HIGH);

  delayMicroseconds(speedDelay);

  digitalWrite(stepPin, LOW);

  delayMicroseconds(speedDelay);

}