stepper_goStop.ino

#include <Stepper.h>

const int stepsPerRevolution = 400;  // change this to fit the number of steps per revolution
// for your motor
const int BUTTON_CLOCKWISE = 7;
const int BUTTON_COUNTERCLOCKWISE = 6;
const int SINGLE_STEP = 1;
int stepValue = 0;

long lastButtonTime;
const int TIMEOUT = 500;

const int PINS[4] = {8, 9, 10, 11};

// initialize the stepper library on pins 8 through 11:
Stepper myStepper(stepsPerRevolution, PINS[0], PINS[1], PINS[2], PINS[3]);

void setup() {
  // set the speed at 60 rpm:
  myStepper.setSpeed(60);
  // initialize the serial port:
  Serial.begin(9600);
  pinMode(BUTTON_CLOCKWISE, INPUT_PULLUP);
  pinMode(BUTTON_COUNTERCLOCKWISE, INPUT_PULLUP);

  lastButtonTime = 0;
}

void loop() {

  if (millis() > lastButtonTime + TIMEOUT){
    if (digitalRead(BUTTON_CLOCKWISE) == LOW and digitalRead(BUTTON_COUNTERCLOCKWISE) == LOW){
      stepValue = 0;
      lastButtonTime = millis();
    }
    else if (digitalRead(BUTTON_CLOCKWISE) == LOW){
      stepValue = 1;
      lastButtonTime = millis();
    }
    else if (digitalRead(BUTTON_COUNTERCLOCKWISE) == LOW){
      stepValue = -1;
      lastButtonTime = millis();
    }
  }

  myStepper.step(SINGLE_STEP * stepValue);  
}