Getting Started With Stepper Motor 28BYJ-48

1#define A 2
2#define B 3
3#define C 4
4#define D 5
5 
6#define  NUMBER_OF_STEPS_PER_REV 512
7
8void setup(){
9pinMode(A,OUTPUT);
10pinMode(B,OUTPUT);
11pinMode(C,OUTPUT);
12pinMode(D,OUTPUT);
13}
14
15void  write(int a,int b,int c,int d){
16digitalWrite(A,a);
17digitalWrite(B,b);
18digitalWrite(C,c);
19digitalWrite(D,d);
20}
21
22void  onestep(){
23write(1,0,0,0);
24delay(5);
25write(1,1,0,0);
26delay(5);
27write(0,1,0,0);
28delay(5);
29write(0,1,1,0);
30delay(5);
31write(0,0,1,0);
32delay(5);
33write(0,0,1,1);
34delay(5);
35write(0,0,0,1);
36delay(5);
37write(1,0,0,1);
38delay(5);
39}
40
41void  loop(){
42int i;
43i=0;
44while(i<NUMBER_OF_STEPS_PER_REV){
45onestep();
46i++;
47}