# 2.藍芽APP之RGB燈泡控制

本程式使用 : Arduino Nano\*1、藍芽擴充套件、RGB燈泡、Bluetooth Electronics 手機APP

功能 : 使用手機APP，分別控制R、G、B，三個RGB值從0\~255，使燈泡能有各種不同之顏色變化

```
/*
序列阜(沒有行結尾)改成(NL&CR)
AT：測試，回應「OK」
AT+VERSION：回應?體的版本。
AT+NAME:xyz：將裝置名稱改為「xyz」。n
AT+PIN:1234：將連線密碼換為「1234」。
AT+BAUD4：將 baud rate 換為 9600。
AT+BAUD5：將 baud rate 換為 19200
AT+BAUD6：將 baud rate 換為 38400
AT+BAUD7：將 baud rate 換為 57600
*/
int XX;
int YY;
int ZZ;
#include <SoftwareSerial.h>   // 引用程式庫
// 定義連接藍牙模組的序列埠
SoftwareSerial BT(8, 9); // TX, RX(in BLUETOOTH)
char val;  // 儲存接收資料的變數
void setup() {
Serial.begin(9600);   // 與電腦序列埠連線
Serial.println("BT is ready!");
pinMode(3,OUTPUT);
pinMode(5,OUTPUT);
pinMode(6,OUTPUT);
// 設定藍牙模組的連線速率
// 如果是HC-05，請改成38400
BT.begin(9600);
}
void loop() {
// 若收到「序列埠監控視窗」的資料，則送到藍牙模組
if (Serial.available()) {
val = Serial.read\(\);

BT.print\(val\);
}
// 若收到藍牙模組的資料，則送到「序列埠監控視窗」
if (BT.available()) {
val = BT.read\(\);

Serial.print\(val\);
}
if(val=='R')
{

  digitalWrite\(3,HIGH\);

}
else if(val=='r')
{

digitalWrite\(3,LOW\);

}
else if(val=='A')
{
XX=BT.parseInt\(\);

Serial.print\("XX="\);

Serial.println\(XX\);

analogWrite\(3,map\(XX,0,100,0,255\)\);
}
else if(val=='B')
{
YY=BT.parseInt\(\);

Serial.print\("YY="\);

Serial.println\(YY\);

analogWrite\(5,map\(YY,0,100,0,255\)\);
}
else if(val=='C')
{
ZZ=BT.parseInt\(\);

Serial.print\("ZZ="\);

Serial.println\(ZZ\);

analogWrite\(6,map\(ZZ,0,100,0,255\)\);
}
}
```


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