SEN0228

SEN0228 Datasheet

Gravity I2C VEML7700 Ambient Light Sensor SKU SEN0228

Part	Datasheet
SEN0228	SEN0228 (pdf)

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Gravity I2C VEML7700 Ambient Light Sensor SKU SEN0228 Introduction VEML7700 is a high accuracy ambient light digital 16-bit resolution sensor. It includes a high sensitive photo diode, a low noise amplifier, a 16-bit A/D converter and supports an easy to use Gravity I2C interface. It outputs a digital signal directly and no need for complicated calculations. This is a more acurate and easier to use version of the simple foto resistor which only outputs a voltage that needs to be calculated in order to obtain meaningful data. The data which is output by this sensor is directly output in Lux Lx . When objects which are lighted in homogeneous get the 1 lx luminous flux in one square meter ,their light intensity is 1lx. Sometimes to take good advantage of the illuminant, you can add a reflector to the illuminant. So that there will be more luminous flux in some directions and it can increase the ilumination of the target surface. For example: • Night • Moonlightnight:0.02--0.3 • Cloudy indoor:5--50 • Cloudy outdoor:50--500 • Sunny indoor:100--1000 • Under the sunlight in summer afternoon about 106 power • Reading books for intensity of illumination:50--60 • Home video standard intensity of illumination:1400. Specification • Supply Voltage 3.3-5V • Working Current 45uA • Shutdown Mode 0.5uA • Measuring Range 0-120klx • Accuracy lx / ct • Working Temperature -25 ~ +85 • Dimension 30 x 22 mm x0.866 inches • Weight 12g Board Overview Gravity I2C VEML7700 Ambient Light Sensor Num 1 2 3 4 Label SDA SCL GND VCC Description IIC-Data IIC-Clock GND Tutorial Requirements • Hardware DFRduino UNO or similar x 1 Gravity I2C VEML7700 Ambient Light Sensor x1 M-M/F-M/F-F Jumper wires • Software Arduino IDE, Click to Download Arduino IDE from Connection Diagram Arduino Connection Sample Code Download VEML7700 Arduino Library How to install Libraries in Arduino IDE /! * readVEML770.ino * DFRobot's Digital Ambient Light Sensor * This example read the Lux from Digital Ambient Light Sensor, and then p rint them * * 2016 * GNU Lesser General Public License * * V1.0 * 2016-12-06 */ #include <Wire.h> #include "DFRobot_VEML7700.h" DFRobot_VEML7700 als; void setup Serial.begin 9600 als.begin ; void loop float lux Serial.print "Lux " ;//Read Lux and print Serial.print lux Serial.println " lx" delay 500 ; Expected Results Result

PDF Datasheet Preview

Gravity I2C VEML7700 Ambient Light Sensor SKU SEN0228

Introduction

VEML7700 is a high accuracy ambient light digital 16-bit resolution sensor. It includes a high sensitive photo diode, a low noise amplifier, a 16-bit A/D converter and supports an easy to use Gravity I2C interface. It outputs a digital signal directly and no need for complicated calculations. This is a more acurate and easier to use version of the simple foto resistor which only outputs a voltage that needs to be calculated in order to obtain meaningful data. The data which is output by this sensor is directly output in Lux Lx . When objects which are lighted in homogeneous get the 1 lx luminous flux in one square meter ,their light intensity is 1lx. Sometimes to take good advantage of the illuminant, you can add a reflector to the illuminant. So that there will be more luminous flux in some directions and it can increase the ilumination of the target surface.

For example:
• Night
• Moonlightnight:0.02--0.3
• Cloudy indoor:5--50
• Cloudy outdoor:50--500
• Sunny indoor:100--1000
• Under the sunlight in summer afternoon about 10*6 power
• Reading books for intensity of illumination:50--60
• Home video standard intensity of illumination:1400.

Specification
• Supply Voltage 3.3-5V
• Working Current 45uA
• Shutdown Mode 0.5uA
• Measuring Range 0-120klx
• Accuracy lx / ct
• Working Temperature -25 ~ +85
• Dimension 30 x 22 mm x0.866 inches
• Weight 12g

Board Overview

Gravity I2C VEML7700 Ambient Light Sensor

Num 1 2 3 4

Label SDA SCL GND VCC

Description IIC-Data IIC-Clock GND

Tutorial

Requirements
• Hardware DFRduino UNO or similar x 1 Gravity I2C VEML7700 Ambient Light Sensor x1 M-M/F-M/F-F Jumper wires
• Software

Arduino IDE, Click to Download Arduino IDE from

Connection Diagram

Arduino Connection

Sample Code

Download VEML7700 Arduino Library How to install Libraries in Arduino IDE
/*! * readVEML770.ino * DFRobot's Digital Ambient Light Sensor * This example read the Lux from Digital Ambient Light Sensor, and then p
rint them * * 2016 * GNU Lesser General Public License * * V1.0 * 2016-12-06 */
#include <Wire.h> #include "DFRobot_VEML7700.h"

DFRobot_VEML7700 als;
void setup

Serial.begin 9600 als.begin ;
void loop
float lux Serial.print "Lux " ;//Read Lux and print Serial.print lux Serial.println " lx" delay 500 ;

Expected Results

Result

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Datasheet ID: SEN0228 509124