arduino diy needle seder with steep motors

Gm

This is stepeer.h code whitch work fine for me but i can use it , like you say

#include <Stepper.h>

const int stepsPerRevolution = 45;  // 70% left

// initialize the stepper library on pins 8 through 11:
Stepper myStepper(stepsPerRevolution, 8, 9, 10, 11);

void setup() {
  // set the speed at 40 rpm:
  myStepper.setSpeed(40);
  // initialize the serial port:
  Serial.begin(9600);
}

void loop() {
  // step one revolution  in one direction:(left)
  Serial.println("clockwise");
  myStepper.step(stepsPerRevolution);
  delay(2000);//2 second pause

  // step one revolution in the other direction:(right)
  Serial.println("counterclockwise");
  myStepper.step(-stepsPerRevolution);
  delay(2000);//2 second pause
}

soo i try transfer this code in AccelStepeer.h library

#include <AccelStepper.h>

AccelStepper myStepper(AccelStepper::FULL4WIRE, 8, 9, 10, 11);

const int stepsPerRevolution = 45;  // 70% left

void setup()
{
  myStepper.setMaxSpeed(40.0);
  myStepper.setSpeed(40);
}

void loop()
{
    Serial.println("clockwise");
    myStepper.move(stepsPerRevolution);
    delay(2000);//2 second pause

    Serial.println("counterclockwise");
    myStepper.move(-stepsPerRevolution);
    delay(2000);

    // step one revolution in the other direction:(right)
    // --or absolute positioning
    Serial.println("counterclockwise");
    myStepper.moveTo(-stepsPerRevolution);
    myStepper.runSpeedToPosition();
    delay(2000);//2 second pause*/
}

code upload succes but nothing hepend with motor, motor freeze, can i do this on this way or i nitu use aproximtely miles to define position left and right, and how i can connect this code with (for loop) so i can count numper of repeated steps (19 time ) ? i hope i put all what you need to see where im stuck

tnx for reply