//00515 фоторезистор 1
#define phpin A0
#define led1 2
#define led2 3

void setup() {
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  digitalWrite(led1, LOW);
  digitalWrite(led2, LOW);
}

void loop() {
  int lightval = analogRead(phpin);
  if (lightval > 511) {
    digitalWrite(led1, HIGH);
    digitalWrite(led2, LOW);
  }
  else {
    digitalWrite(led1, LOW);
    digitalWrite(led2, HIGH);
  }
  delay(100);
}