int sensorPin = A0; int led=9; void setup() {Serial.begin(9600); } void loop() {int sensorValue,y; // read the value from the sensor: sensorValue = analogRead(sensorPin); Serial.println(sensorValue); y=sensorValue; y=map(y,100,1000,0,255); Serial.println(y); analogWrite(led,y); delay(500); }