BH1750FVI digitale lichtintensiteit sensor module GY-30

Arduino code voorbeeld:

#include <Wire.h>
#include <math.h>

int BH1750address = 0x23; 
byte buff[2];
void setup()
{
Wire.begin();
Serial.begin(9600);
}
void loop()
{
int i;
uint16_t val=0;
BH1750_Init(BH1750address);
delay(200);
if(2==BH1750_Read(BH1750address))
{
val=((buff[0]<<8)|buff[1])/1.2;
Serial.print(val,DEC); 
Serial.println("[lx]"); 
}
delay(150);
}
int BH1750_Read(int address) //
{
int i=0;
Wire.beginTransmission(address);
Wire.requestFrom(address, 2);
while(Wire.available()) //
{
buff[i] = Wire.receive(); // receive one byte
i++;
}
Wire.endTransmission(); 
return i;
}
void BH1750_Init(int address) 
{
Wire.beginTransmission(address);
Wire.send(0x10);//1lx reolution 120ms
Wire.endTransmission();
}