可變電阻調控LED

int value=0;

int led1=8;

int lightvalue=0;

void setup() {

// put your setup code here, to run once:

Serial.begin(9600);

pinMode(led1,OUTPUT);

}

void loop() {

// put your main code here, to run repeatedly:

value=analogRead(A0);

Serial.print("value:");

Serial.println(value);

lightvalue=map(value,0,1023,0,255);

Serial.print("lightvalue:");

Serial.println(lightvalue);

analogWrite(led1,lightvalue);

delay(500);

}