odevzdani/03/source.txt

#include <Wire.h>
#include <BH1750.h>

#define ledka D0

BH1750 lightMeter;


void setup(){

  Serial.begin(9600);

  pinMode(ledka, OUTPUT);

  // Initialize the I2C bus (BH1750 library doesn't do this automatically)
  Wire.begin();
  // On esp8266 you can select SCL and SDA pins using Wire.begin(D4, D3);

  lightMeter.begin();

  Serial.println(F("BH1750 Test begin"));

}


void loop() {

  float lux = lightMeter.readLightLevel();
  Serial.print("Light: ");
  Serial.print(lux);
  Serial.println(" lx");
  if(lux < 200)
  {
    digitalWrite(ledka, HIGH);
  }
    else
  {
    digitalWrite(ledka, LOW);
  }
  delay(1000);
}