Arduino------红外控制舵机风扇
本篇文章，主要介绍如何使用 “红外遥控器、接收头” 、 “ULN2003驱动模块” 和 “继电器” 等制作一款Arduino红外控制舵机风扇。
所需的硬件
● Arduino Uno 开发板
● 红外遥控器
● 红外接收器
● 舵机
● ULN2003驱动模块
● 继电器
● 直流电机
● 小风扇
● 若干条跳线
连接
● 舵机
| 舵机 | Arduino |
|---|---|
| 橙色线 | 引脚9 |
| 红色线 | 3.3 |
| 棕色线 | GND |
● ULN2003驱动模块 //防止直流电机干扰红外接收器接收红外信号
| ULN2003驱动模块 | Arduino |
|---|---|
| 1 | GND |
| 2 | 5V |
| 3 | 引脚7 |
● 红外接收器
| 红外接收器 | Arduino |
|---|---|
| VOUT | 引脚11 |
| GND | GND |
| VCC | VCC |
● 继电器
| 继电器 | Arduino |
|---|---|
| VCC | 5V |
| GND | GND |
| IN | ULN2003模块引脚3 |
| COM | 外电源负极 |
| NO | 直流电机 |
● 支流电机
| 直流电机 | 继电器 |
|---|---|
| 外电源正极 | NO |
库的准备及操作说明
程序
//*代码说明红外遥控CH:关直流电机，CH+:开直流电机
NEXT :关舵机 ,PLAY/PAUSE:开舵机。
#include
#include
Servo myservo; //舵机起个名字
// twelve servo objects can be created on most boards
int pos = 0; // variable to store the servo position
#define MAX 22
int RECV_PIN =11; //定义红外接收模块输出口接arduino数字引脚11
IRrecv irrecv(RECV_PIN);
decode_results results;
//Car mp3编码
unsigned long rremote_code[MAX] = {
0xFFA25D,0xFF629D,0xFFE21D,//CH- CH CH+
0xFF22DD,0xFF02FD,0xFFC23D,//PREV NEXT PLAY
0xFFE01F,0xFFA857,0xFF906F,//VOL- VOL+ EQ
0xFF6897,0xFF9867,0xFFB04F,// 0 100+ 200+
0xFF30CF,0xFF18E7,0xFF7A85,// 1 2 3
0xFF10EF,0xFF38C7,0xFF5AA5,// 4 5 6
0xFF42BD,0xFF4AB5,0xFF52AD, // 7 8 9
0xFFFFFFFF//长按
};
//Car mp3对应的字符串
String rremote_string[MAX] = {
"CH-","CH","CH+",
"PREV","NEXT","PLAY/PAUSE",
"VOL-","VOL+","EQ",
"0","100+","200+",
"1","2","3",
"4","5","6",
"7","8","9",
"longPress"
};
String ServoEn="OFF";
void getRemoteDo();
void ServoCtr();
void setup()
{
Serial.begin(9600);
irrecv.enableIRIn(); //初始化红外遥控
pinMode(7, OUTPUT);
myservo.attach(9);
}
void loop()
{
ServoCtr();
}
void ServoCtr()
{
for(pos = 0; pos <= 90; pos += 1) // goes from 0 degrees to 180 degrees
{ // in steps of 1 degree
getRemoteDo();
while(ServoEn=="OFF")
{
getRemoteDo();
}
myservo.write(pos); // tell servo to go to position in variable 'pos'
delay(15); // waits 15ms for the servo to reach the position
}
for(pos = 90; pos>=0; pos-=1) // goes from 180 degrees to 0 degrees
{
getRemoteDo();
while(ServoEn=="OFF")
{
getRemoteDo();
}
myservo.write(pos); // tell servo to go to position in variable 'pos'
delay(15); // waits 15ms for the servo to reach the position
}
}
/*判断红外接收信息*/
void getRemoteDo()
{
String codeString;
if (irrecv.decode(&results))
{
//打印字符串
codeString = getRremoteString(results.value);
if(codeString.length()!=0)
Serial.println(codeString);
irrecv.resume(); // 接收下一个值
}
if (codeString=="CH")
{
Serial.println("ok");
digitalWrite(7, LOW);
}
if (codeString=="CH+")
{
Serial.println("ok_");
digitalWrite(7, HIGH);
}
if (codeString=="PLAY/PAUSE")
{
ServoEn="On";
}
if (codeString=="NEXT")
{
ServoEn="OFF";
}
}
/**
* 解析红外编码并返回对应的字符串
*/
String getRremoteString(unsigned long code){
String rremotestring = "";
int i = 0;
for(i = 0;i