필수정보

아두이노 학습용으로 많이 사용되는 L9110모터 드라이버를 채용한 선풍기 모듈입니다. 

Additional Information 

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

* Fan Driver using L9110 Motor Driver

*

* The L9110 Motor Diver is a simple driver designed for

* toys and robots. It has two inputs INA and INB

* and two outputs to drive a simple DC Motor.

*

* The direction of motor spin can be changed and the speed

* can be controlled using PWM

*

* The device described here is the Keyes Fan Board with

* 4 connections

*

* Connections:

*

* INA to Arduino PIN 5

* INB to Arduino PIN 6

* Vcc to Arduino 5 volts

* GND to Arduino GND

*

* Push Button:

* (the output went LOW on pressing on my unit)

* Gnd to Arduino Gnd

* Vcc to Arduino 5 volts

* S to Adduino PIN 7

*

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

const int INA = 6;

const int INB = 5;

const int pushButton = 7;

const int ledPin = 13; // onboard LED

int action = 0; // 0 = Stop, 1 = Forward, 2 = Reverse

byte speed = 80; // change this to alter speed 0 - 255 although 80 is the minimum for reliable operation

void setup()

{

pinMode(INA,OUTPUT);

pinMode(INB,OUTPUT);

pinMode(pushButton, INPUT);

pinMode(ledPin, OUTPUT); // onboard LED

Serial.begin(9600); // for debug

}

void loop()

{

if (digitalRead(pushButton) == LOW){ // see if button has been pressed

digitalWrite(ledPin, HIGH); // turn on LED

action = action + 1; // increment action

if(action > 2){

action = 0; // keep action in range

}

if (action > 0){

digitalWrite(ledPin, HIGH); // Turn OFF LED if motor stopped

stopFan();

delay(100); // short delay to make direction change easier for motor

}

else digitalWrite(ledPin, LOW); // turn onboard LED OFF

delay(800); // simple switch debounce

}

switch (action){

case 0:

Serial.println("Stop Fan:");

stopFan();

break;

case 1:

Serial.println("Fan Forwards:");

forward();

break;

case 2:

Serial.println("Fan Reverse:");

reverse();

break;

}

}

void reverse(){

analogWrite(INA,0);

analogWrite(INB,speed);

}

void forward(){

analogWrite(INA,speed);

analogWrite(INB,0);

}

void stopFan(){

digitalWrite(INA,LOW);

digitalWrite(INB,LOW);

}