// PRP 3 — light sensing with an LDR.
// Wire the LDR and a fixed resistor as a divider, junction to A0.

const int LDR_PIN = A0;

void setup() {
  Serial.begin(9600);
}

void loop() {
  int reading = analogRead(LDR_PIN);   // 0-1023, NOT a light level yet
  Serial.println(reading);
  delay(1000);
}