Integrate BH1750 Ambient Light Sensor with Arduino

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Many display devices nowadays have Ambient Light sensors to adjust the brightness automatically. Let's see how we integrate it with Arduino

hIOTron

1

Run a Program

#include #include

int BH1750address = 0x23;
byte buff[2];
LiquidCrystal lcd (7,6,5,4,3,2); //RS, E, D4, D5, D6, D7

void setup()
{
Wire.begin();
//Serial.begin(9600);
lcd.begin(16,2);
lcd.print(" BH1750 Light ");
lcd.setCursor(0,1);
lcd.print("Intensity Sensor");
delay(2000);
}

void loop()
{
int i;
uint16_t value=0;
BH1750_Init(BH1750address);
delay(200);

if(2==BH1750_Read(BH1750address))
{
value=((buff[0]<

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