Part2 控制LED亮度

#include <SoftwareSerial.h>

SoftwareSerial BT(3,2); // RX, TX

void setup() {

Serial.begin(9600);

BT.begin(38400);//bluetooth baud rate

pinMode(13,OUTPUT);

}

void loop() {

if(BT.available()>0){

int a = BT.read();

Serial.println(a);

analogWrite(11,map(a,0,80,0,255));

}

}