Arduino-类比讯号改变LED灯亮度

 重点：

  //可调电阻的三个引脚：上-vcc 中-类比讯号 下-GND

  int sensor = A1;//类比讯号
  int sensorRead = 0;
  int newdata = 0;
  int led = A3;//类比讯号引脚必须为类比信号输出脚

  int sensorRead = analogRead(sensor);//类比讯号analogRead()  analogWrite()
  Serial.println(sensorRead);
  newdata = map(sensorRead,0,1023,0,255);
  
  analogWrite(led,newdata);//类比讯号analogRead()  analogWrite()

//可调电阻的三个引脚：上-vcc 中-类比讯号 下-GND
int sensor = A1;//类比讯号
int sensorRead = 0;
int newdata = 0;
int led = A3;//类比讯号引脚必须为类比信号输出脚void setup() {Serial.begin(9600);//pinMode(led,OUTPUT);
}void loop() {int sensorRead = analogRead(sensor);//类比讯号analogRead()  analogWrite()Serial.println(sensorRead);newdata = map(sensorRead,0,1023,0,255);analogWrite(led,newdata);//类比讯号analogRead()  analogWrite()delay(200);}

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