PWM 调光实验

#define Pot A0
#define LED 3
int PotBuffer = 0;
void setup()
{
  pinMode(LED, OUTPUT);
}

void loop()
{
  PotBuffer = analogRead(Pot);
  PotBuffer = map(PotBuffer, 0, 1023, 0, 255);
  analogWrite(LED, PotBuffer);
}