28BYJ-48 步進馬達

1.外觀與尺寸

28BYJ-48 步進馬達有兩種規格 5V 與 12V ，尺寸大小都相同，但扭矩12V比5V稍大

通常可以由如下兩種驅動器ULN2003驅動(驅動器也同時支援5V與12V)

尺寸與規格表(尺寸可供3D列印設計時採用)

關於更詳細的測試請參閱 5V與12V的比較

2.步進馬達內部圖

Another view of each motor

5.驅動法方為三種，每一種各有其優點與缺點，詳述如下

(1)一相激磁(優點：省電 缺點：轉矩小、轉速慢)

一相激磁驅動法，一圈需要2048步

int t= 10; void setup() { pinMode(8,OUTPUT); pinMode(9,OUTPUT); pinMode(10,OUTPUT); pinMode(11,OUTPUT); } void loop() { digitalWrite(8,1); digitalWrite(9,0); digitalWrite(10,0); digitalWrite(11,0); delay(t); digitalWrite(8,0); digitalWrite(9,1); digitalWrite(10,0); digitalWrite(11,0); delay(t); digitalWrite(8,0); digitalWrite(9,0); digitalWrite(10,1); digitalWrite(11,0); delay(t); digitalWrite(8,0); digitalWrite(9,0); digitalWrite(10,0); digitalWrite(11,1); delay(t); }

(2)二相激磁 (優點：轉矩大 缺點：轉速慢、耗電)

二相激磁驅動法，一圈需要2048步

int t= 5; void setup() { pinMode(8,OUTPUT); pinMode(9,OUTPUT); pinMode(10,OUTPUT); pinMode(11,OUTPUT); } void loop() { digitalWrite(8,1); digitalWrite(9,1); digitalWrite(10,0); digitalWrite(11,0); delay(t); digitalWrite(8,0); digitalWrite(9,1); digitalWrite(10,1); digitalWrite(11,0); delay(t); digitalWrite(8,0); digitalWrite(9,0); digitalWrite(10,1); digitalWrite(11,1); delay(t); digitalWrite(8,1); digitalWrite(9,0); digitalWrite(10,0); digitalWrite(11,1); delay(t); }

或者是直接使用內建的函式庫

#include <Stepper.h> const int stepsPerRevolution = 2048; // change this to fit the number of steps per revolution // for your motor // initialize the stepper library on pins 8 through 11: Stepper myStepper(stepsPerRevolution, 4, 6, 7, 5);

/*

pin腳接法

IN1=4

IN2=6

IN3=7

IN4=5

*/ void setup() { // set the speed at 60 rpm: myStepper.setSpeed(5); // initialize the serial port: Serial.begin(9600); } void loop() { // step one revolution in one direction: Serial.println("clockwise"); myStepper.step(stepsPerRevolution); delay(500); // step one revolution in the other direction: Serial.println("counterclockwise"); myStepper.step(-stepsPerRevolution); delay(500); }

(3)一二相激磁(優點：精度提升2倍，可高轉速)

一二相激磁驅動法，一圈需要4096步

int t= 1; void setup() { pinMode(8,OUTPUT); pinMode(9,OUTPUT); pinMode(10,OUTPUT); pinMode(11,OUTPUT); } void loop() { digitalWrite(8,1); digitalWrite(9,0); digitalWrite(10,0); digitalWrite(11,0); delay(t); digitalWrite(8,1); digitalWrite(9,1); digitalWrite(10,0); digitalWrite(11,0); delay(t); digitalWrite(8,0); digitalWrite(9,1); digitalWrite(10,0); digitalWrite(11,0); delay(t); digitalWrite(8,0); digitalWrite(9,1); digitalWrite(10,1); digitalWrite(11,0); delay(t); digitalWrite(8,0); digitalWrite(9,0); digitalWrite(10,1); digitalWrite(11,0); delay(t); digitalWrite(8,0); digitalWrite(9,0); digitalWrite(10,1); digitalWrite(11,1); delay(t); digitalWrite(8,0); digitalWrite(9,0); digitalWrite(10,0); digitalWrite(11,1); delay(t); digitalWrite(8,1); digitalWrite(9,0); digitalWrite(10,0); digitalWrite(11,1); delay(t); }

或者是

int t= 1000; boolean a[]={1,1,0,0,0,0,0,1}; boolean b[]={0,1,1,1,0,0,0,0}; boolean c[]={0,0,0,1,1,1,0,0}; boolean d[]={0,0,0,0,0,1,1,1}; void setup() { Serial.begin(115200); pinMode(8,OUTPUT); pinMode(9,OUTPUT); pinMode(10,OUTPUT); pinMode(11,OUTPUT); } void loop() { for(int i=0; i<8 ; i++){ digitalWrite(8,a[i]); digitalWrite(9,b[i]); digitalWrite(10,c[i]); digitalWrite(11,d[i]); delayMicroseconds(t); Serial.println(i); }

}