The 3D Printed Marble Machine 3 stepper mod 28byj-48

This is a mod for The 3D Printed Marble Machine 3 by Tulio with a 28byj-48 stepper motor instead of the manual lift of the balls.

arduino Library : http://www.airspayce.com/mikem/arduino/AccelStepper/

arduino code:

#include <AccelStepper.h>#define HALFSTEP 8// Motor pin definitions#define motorPin1  3     // IN1 on the ULN2003 driver 1#define motorPin2  4     // IN2 on the ULN2003 driver 1#define motorPin3  5     // IN3 on the ULN2003 driver 1#define motorPin4  6     // IN4 on the ULN2003 driver 1// Initialize with pin sequence IN1-IN3-IN2-IN4 for using the AccelStepper with 28BYJ-48AccelStepper stepper1(HALFSTEP, motorPin1, motorPin3, motorPin2, motorPin4);void setup(){     stepper1.setMaxSpeed(2000);   stepper1.setSpeed(-1100);  }void loop(){     stepper1.runSpeed();}