ESP8266 vs Stepper Motor

randomnerdtutorials.com/esp8266-nodemcu-stepper-motor-28byj-48-uln2003/ 

#include <AccelStepper.h>

const int stepsPerRevolution = 2048;  // change this to fit the number of steps per revolution

// ULN2003 Motor Driver Pins

#define IN1 5

#define IN2 4

#define IN3 14

#define IN4 12

// initialize the stepper library

AccelStepper stepper(AccelStepper::HALF4WIRE, IN1, IN3, IN2, IN4);

void setup() {

  // initialize the serial port

  Serial.begin(115200);

  // set the speed and acceleration

  stepper.setMaxSpeed(500);

  stepper.setAcceleration(100);

  // set target position

  stepper.moveTo(stepsPerRevolution);

}

void loop() {

  // check current stepper motor position to invert direction

  if (stepper.distanceToGo() == 0){

    stepper.moveTo(-stepper.currentPosition());

    Serial.println("Changing direction");

  }

  // move the stepper motor (one step at a time)

  stepper.run();

}