TB6600 Stepper Driver

// Canonical beginner example for the TB6600 stepper driver
// Arduino Uno + TB6600 + NEMA17 stepper motor

const int PUL_PIN = 2;   // TB6600 PUL+
const int DIR_PIN = 3;   // TB6600 DIR+
const int ENA_PIN = 4;   // TB6600 ENA+

const int STEPS_PER_DIRECTION = 200;
const int STEP_DELAY_US = 800;

void stepMotor(int steps) {
  for (int i = 0; i < steps; i++) {
    digitalWrite(PUL_PIN, HIGH);
    delayMicroseconds(STEP_DELAY_US);
    digitalWrite(PUL_PIN, LOW);
    delayMicroseconds(STEP_DELAY_US);
  }
}

void setup() {
  pinMode(PUL_PIN, OUTPUT);
  pinMode(DIR_PIN, OUTPUT);
  pinMode(ENA_PIN, OUTPUT);

  digitalWrite(PUL_PIN, LOW);
  digitalWrite(DIR_PIN, LOW);
  digitalWrite(ENA_PIN, LOW);

  Serial.begin(9600);
  while (!Serial) {
    ;
  }
  Serial.println("TB6600 stepper driver demo starting...");
}

void loop() {
  Serial.println("Rotate clockwise");
  digitalWrite(DIR_PIN, HIGH);
  stepMotor(STEPS_PER_DIRECTION);
  delay(1000);

  Serial.println("Rotate counter-clockwise");
  digitalWrite(DIR_PIN, LOW);
  stepMotor(STEPS_PER_DIRECTION);
  delay(1000);
}