DFR0026 - DFRobot - Datasheet.Live



DFRobotAmbientLightSensorSKU:DFR0026

Contents

 1 Introduction

 2 Specification

 3 Application

 4 PinOut

 5 Tutorial

5.1 Connection Diagram

5.2 Sample Code

5.3 Result

 6 FAQ

Introduction

Here comes DFRobot's new Analog Ambient Light Sensor. Brand new design and much more

convenient to use.This module help you to detect the light density and reflect the analog voltage

signal back to Arduino controller. You can set the threshold of voltage level to trig other unit on

Arduino project.

Specification

 Supply Voltage: 3.3V to 5V

 Illumination range : 1 Lux to 6000 Lux

 Responsive time : 15us

 Interface: Analog

 Size:22x30mm

Application

 Automatic screen brightness control

PinOut

Color Pin

GREEN S

RED VCC

BLACK GND

Tutorial

ConnectionDiagram



Arduino Sensor

A0 GREEN

5V RED

GND GRAY

SampleCode

void setup()

{

Serial.begin(9600); // open serial port, set the baud rate to 9600 bps

}

void loop()

{

int val;

val=analogRead(0); //connect grayscale sensor to Analog 0

Serial.println(val,DEC);//print the value to serial

delay(100);

}

Result

Open the serial port monitor, set the baud rate according to the program for 9600.The light intensity

around the sensor is different, the received data is also different.The more light, the bigger the data.

FAQ

Q1. Some general Arduino Problems/ FAQ/ Tips, very good to know.

A1. Click the topic link on DFRobot Forum.

Q2. The unit of the output from these sensors is? How can I convert it to LUX?

A2. Well, it is only a simple analog sensor that could show you the relationship of the light

intensity (within its detect range) and voltage (0-5V). If you want to transfer the voltage to unit

in LUX, then well, it requires that you have a commercial Light Intensity Meter like this that

can display LUX info, then you can match the readings to the sensor's analog reading, then

you could a map to describe the relationship of voltage and ambient light density.

For any question/advice/cool idea to share, please visit DFRobot Forum.