28BYJ-48 步進馬達實驗 (一／二相激磁)

 28BYJ-48 5V DC 的話，查詢到的規格上寫著，步進角為 `5.625 / 64`，因此這馬達轉一圈需要的步數是 `360 / (5.625 / 64)`，就是 `4096` 步  (一／二相激磁才會有的步數)

程式 : 一／二相激磁
int Pin0 = 6;
int Pin1 = 7;
int Pin2 = 8;
int Pin3 = 9;
int _step = 0;
int count=0 ;
boolean dir = true;
// gre
void setup()
{
 pinMode(Pin0, OUTPUT);
 pinMode(Pin1, OUTPUT);
 pinMode(Pin2, OUTPUT);
 pinMode(Pin3, OUTPUT);
}
 void loop()
{
 switch(_step){
   case 0:
     digitalWrite(Pin0, LOW);
     digitalWrite(Pin1, LOW);
     digitalWrite(Pin2, LOW);
     digitalWrite(Pin3, HIGH);
   break;
   case 1:
     digitalWrite(Pin0, LOW);
     digitalWrite(Pin1, LOW);
     digitalWrite(Pin2, HIGH);
     digitalWrite(Pin3, HIGH);
   break;
   case 2:
     digitalWrite(Pin0, LOW);
     digitalWrite(Pin1, LOW);
     digitalWrite(Pin2, HIGH);
     digitalWrite(Pin3, LOW);
   break;
   case 3:
     digitalWrite(Pin0, LOW);
     digitalWrite(Pin1, HIGH);
     digitalWrite(Pin2, HIGH);
     digitalWrite(Pin3, LOW);
   break;
   case 4:
     digitalWrite(Pin0, LOW);
     digitalWrite(Pin1, HIGH);
     digitalWrite(Pin2, LOW);
     digitalWrite(Pin3, LOW);
   break;
   case 5:
     digitalWrite(Pin0, HIGH);
     digitalWrite(Pin1, HIGH);
     digitalWrite(Pin2, LOW);
     digitalWrite(Pin3, LOW);
   break;
     case 6:
     digitalWrite(Pin0, HIGH);
     digitalWrite(Pin1, LOW);
     digitalWrite(Pin2, LOW);
     digitalWrite(Pin3, LOW);
   break;
   case 7:
     digitalWrite(Pin0, HIGH);
     digitalWrite(Pin1, LOW);
     digitalWrite(Pin2, LOW);
     digitalWrite(Pin3, HIGH);
   break;
   default:
     digitalWrite(Pin0, LOW);
     digitalWrite(Pin1, LOW);
     digitalWrite(Pin2, LOW);
     digitalWrite(Pin3, LOW);
   break;
 }

 count++;
 if (count>4096) {   // 28BYJ-48 5V DC  360 / (5.625 / 64) = 4096 step
  count=0;
  dir=!dir;
  delay(1000);
 }

 if(dir){
   _step++;
 }else{
   _step--;
 }

 if(_step>7){
   _step=0;
 }
 if(_step<0){
   _step=7;
 }
 delay(1);
}