int sensorPin = A5;       // the potentiometer (POT A5) on the ThinkerShield
int ledPin = 12;          // the LED on pin D12
int sensorValue = 0;      // variable to store the value from the sensor

void setup() {
  pinMode(ledPin, OUTPUT);  // the LED pin is an output
  Serial.begin(9600);       // start serial so we can print the sensor value
}

void loop() {
  sensorValue = analogRead(sensorPin);  // read the knob (0 to 1023)
  digitalWrite(ledPin, HIGH);           // LED on
  delay(sensorValue);                   // wait — bigger value, longer wait
  digitalWrite(ledPin, LOW);            // LED off
  delay(sensorValue);                   // wait again
  Serial.print("The sensor value is: ");
  Serial.println(sensorValue);          // print the value to the Serial Monitor
}