分类： 嵌入式

        int Pin0 = 8;int Pin1 = 9;int Pin2 = 10;int Pin3 = 11;int _step = 0;boolean dir = true;//正反转的 flagint stepperSpeed = 1;//电机转速,1ms一步void setup(){pinMode(Pin0, OUTPUT);pinMode(Pin1, OUTPUT);pinMode(Pin2, OUTPUT);pinMode(Pin3, OUTPUT);}//用下面的代码仿照PWM输出,看看类不累..哈哈.._step 从0 加到7 再变成0, 就这样一直循环下去.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;}if(dir){_step++;}else{_step--;}if(_step>7){        //请注意,这边_step> 7的时候,已经是在上面的那个判断里面从7加到8了.但是, 最后一次执行的时候,还是7 !!!_step=0;　　    //所以这里变成0 是必须的.
          }if(_step<0){       //同理_step=7;}delay(stepperSpeed);        //电机休息一下,用来调速用的.}

    /** 步进电机跟随电位器旋转* (或者其他传感器)使用0号模拟口输入* 使用arduino IDE自带的Stepper.h库文件*/#include <Stepper.h>// 这里设置步进电机旋转一圈是多少步#define STEPS 100// attached to设置步进电机的步数和引脚Stepper stepper(STEPS, 8, 9, 10, 11);// 定义变量用来存储历史读数int previous = 0;void setup(){// 设置电机每分钟的转速为90步stepper.setSpeed(90);}void loop(){// 获取传感器读数int val = analogRead(0);// 移动步数为当前读数减去历史读数stepper.step(val - previous);// 保存历史读数previous = val;}