「Arduino」利用直流电机制作简易风扇，调速摇头两不误

夏日炎炎，如果没有一丝自然风，那只能自己创造啦! 运用手头的道具制作一个具有调速和摇头功能的简易风扇，利用Arduino控制直流电机来实现扇叶的转动，可随意控制岂不乐哉。

今天我们来利用手头的道具制作一个具有调速和摇头功能的简易风扇，本次一共用到了：

一个直流电机

一个舵机

一个 RotaryEncoder模块

线路图：

当我们旋转RotaryEncoder模块时会获得一个数字量，通过左转和右转可以使这个数字量增大或减少，我们读取这个数字量把他转化成风扇的三个档位，该模块还有一个按下的开关，当开关被按下。就会开启摇头功能，直到下一次被按下。

实验所用的代码如下：

/***********************************************************

File name: _26_DCMotorModule.ino

Description: The state of DC motor includes its forward, reverse,

             acceleration, deceleration and stop. And you will

             see the data on the serial monitor

Website: www.adeept.com

E-mail: [email protected]

Author: Tom

Date: 2017/03/18

***********************************************************/

#include



const int DC_APin = 10;                       //DC motor module A pin connected to digital 11 pin

const int DC_BPin = 11;                       //DC motor module B pin connected to digital 10 pin

int DCmotorspeed = 60;                      //motor speed  0~255



const int APin= 2; //Set the digital 2 to A pin

const int BPin= 3; //Set the digital 3 to B pin

const int SPin= 4 ;//Set the digital 4 to S pin

int i=1;

int encoderVal = 0;

int angle = 90;

Servo s1;

int flag = LOW;

int flag_1 = 0;

int getRotaryEncoder(void)

{

  static int oldA = HIGH; //set the oldA as HIGH

  static int oldB = HIGH; //set the oldB as HIGH

  int result = 0;

  int newA = digitalRead(APin); //read the value of APin to newA

  int newB = digitalRead(BPin); //read the value of BPin to newB

  if (newA != oldA || newB != oldB)//if the value of APin or the BPin has changed

  {

    if (oldA == HIGH && newA == LOW)// something has changed

    {

      result = (oldB * 2 - 1);

    }

  }

  oldA = newA;

  oldB = newB;

  return result;

}



void clockwise(int Speed)                   //the function to drive motor rotate clockwise

{

  analogWrite(DC_APin,Speed);                  //set the speed of motor

  analogWrite(DC_BPin,0);                      //stop the B pin of motor

}

void counterclockwise(int Speed)            //the function to drive motor rotate counterclockwise

{

  analogWrite(DC_APin,0);                      //stop the A pin of motor

  analogWrite(DC_BPin,Speed);                  //set the speed of motor

}



void setup()

{

  pinMode(DC_APin,OUTPUT);                    //initialize the A pin as output

  pinMode(DC_BPin,OUTPUT);                    //initialize the B pin as output

  pinMode(APin, INPUT);//initialize the A pin as input

  pinMode(BPin, INPUT);//initialize the B pin as input

  pinMode(SPin, INPUT);//initialize the S pin as input



 s1.attach(A4);

  s1.write(angle);



  analogWrite(DC_APin,0);

  analogWrite(DC_BPin,0);

  Serial.begin(115200);                      //opens serial port, sets data rate to 9600 bps

}

int j;

void loop()

{

  int change = getRotaryEncoder();



  encoderVal = encoderVal - change;



  if(encoderVal>=72){

    encoderVal = 72;

    }

  if(encoderVal<=0){

    encoderVal = 0;

    DCmotorspeed = 0;

    }



   if(encoderVal>0&&encoderVal<24)

   DCmotorspeed = 60;



  if(encoderVal>24&&encoderVal<48)

     DCmotorspeed = 80;



  if(encoderVal>48&&encoderVal<72)

     DCmotorspeed = 120;



  if(digitalRead(SPin) == LOW)

    flag = !flag;



  if(i!=encoderVal){

    Serial.write(encoderVal);

    i = encoderVal;

 }

   counterclockwise(DCmotorspeed);

   s1.write(angle);

   j++;

   if(flag &&j > 500)

   {

      j = 0;

      if(flag_1 == 0)

      {

        angle +=3;

      }

      else

      {

        angle -=3;

      }

      if(angle > 150)

      {

        flag_1 = 1;

      }

       if(angle < 30)

      {

        flag_1 = 0;

      }

      Serial.print(angle);

   }

}