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This program works for me
// from http://42bots.com/tutorials/28byj-48-stepper-motor-with-uln2003-driver-and-arduino-uno/
#include <AccelStepper.h>
#define HALFSTEP 8
#define FULLSTEP 4
// 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-48
//~ AccelStepper stepper1(HALFSTEP, motorPin1, motorPin3, motorPin2, motorPin4);
AccelStepper stepper1(FULLSTEP, motorPin1, motorPin3, motorPin2, motorPin4);
void setup() {
stepper1.setMaxSpeed(2000.0);
stepper1.setAcceleration(100.0);
stepper1.setSpeed(500);
stepper1.moveTo(1000);
}//--(end setup )---
void loop() {
//Change direction when the stepper reaches the target position
if (stepper1.distanceToGo() == 0) {
stepper1.moveTo(-stepper1.currentPosition());
}
stepper1.run();
}
...R