int potPin = 5; int ledPin = 13; long count = 0; void setup() { pinMode(ledPin, OUTPUT); Serial.begin(19200); } void loop() { int val = analogRead(potPin); digitalWrite(ledPin, HIGH); delay(val); digitalWrite(ledPin, LOW); delay(val); if(count%10==0){ Serial.print(millis()); Serial.print(":"); Serial.println(val); } count++; }