SEN0175

SEN0175 Datasheet

UV Sensor SKU SEN0175

Part	Datasheet
SEN0175	SEN0175 (pdf)

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UV Sensor SKU SEN0175 UV Sensor v1.0-ML8511 Contents • 1 Introduction Applications • 2 Specification • 3 Connection Diagram • 4 The ML8511 intensity graph • 5 Sample Code Introduction The ML8511 is a UV sensor, which is suitable for acquiring UV intensity indoors or outdoors. iT is equipped with an internal amplifier, which converts photo-current to voltage depending on the UV intensity. This unique feature offers an easy interface to external circuits such as ADC. In the power down mode, typical standby current is 0.1A, thus enabling a longer battery life. This sensor detects 280-390nm light most effectively. This is categorized as part of the UVB burning rays spectrum and most of the UVA tanning rays spectrum. It outputs a analog voltage that is linearly related to the measured UV intensity mW/cm2 . If your microcontroller can do an analog to voltage conversion then you can detect the level of UV. • Weather Station • UV Index Monitoring • DIY UV electronic project,etc... Specification • Supply Voltage DC 5V • Operating Temperature -20~70°C • Sensitivity and UV-B • Sensitivity Wave Length:280-390nm • Module Size 30 x 22mm Connection Diagram ML8511 UV Sensor Diagram The ML8511 intensity graph The ML8511 intensity graph Mapping the outputVoltage to intensity is straight forward. No UV light starts at 1V with a maximum of 15mW/cm2 at around 2.8V. Arduino has a built-in map function, but map does not work for floats. Thanks to users on the Arduino forum, we have a simple mapFloat function //The Arduino Map function but for floats //From float mapfloat float x, float in_min, float in_max, float out_min, float out_ max return x - in_min * out_max - out_min / in_max - in_min + out_min The following line converts the voltage read from the sensor to mW/cm2 intensity: float uvIntensity = mapfloat outputVoltage, //Convert the voltage to a UV intensity level Sample Code * UV Sensor v1.0-ML8511 * arch=uv&description=true> * This example reads UV intensity from UV Sensor v1.0-ML8511. * * Created 2014-9-23 * By Phoebe * Modified 2014-9-23 * By Phoebe * * GNU Lesser General Public License. * See for details. * All above must be included in any redistribution /*********Notice and Trouble shooting************* * 1.Connect ML8511 UV Sensor to Arduino A0 * 2.This code is tested on Arduino Uno, Leonardo, Mega boards. int ReadUVintensityPin = A0 //Output from the sensor void setup pinMode ReadUVintensityPin, INPUT ; Serial.begin 9600 //open serial port, set the baud rate to 9600 bps Serial.println "Starting up..." ; void loop int uvLevel = averageAnalogRead ReadUVintensityPin ; float outputVoltage = * uvLevel/1024 float uvIntensity = mapfloat outputVoltage, Serial.print "UVAnalogOutput " Serial.print uvLevel ; Serial.print " OutputVoltage " Serial.print outputVoltage ; Serial.print " UV Intensity " Serial.print uvIntensity Serial.print " Serial.println delay 100 ; //Takes an average of readings on a given pin //Returns the average int averageAnalogRead int pinToRead byte numberOfReadings = 8 unsigned int runningValue = 0; for int x = 0 x < numberOfReadings x++ runningValue += analogRead pinToRead runningValue /= numberOfReadings return runningValue //The Arduino Map function but for floats //From float mapfloat float x, float in_min, float in_max, float out_min, float out_ max return x - in_min * out_max - out_min / in_max - in_min + out_min; Powered By DFRobot 2008-2017

PDF Datasheet Preview

UV Sensor SKU SEN0175

UV Sensor v1.0-ML8511

Contents
• 1 Introduction Applications
• 2 Specification
• 3 Connection Diagram
• 4 The ML8511 intensity graph
• 5 Sample Code

Introduction

The ML8511 is a UV sensor, which is suitable for acquiring UV intensity indoors or outdoors. iT is equipped with an internal amplifier, which converts photo-current to voltage depending on the UV intensity. This unique feature offers an easy interface to external circuits such as ADC. In the power down mode, typical standby current is 0.1A, thus enabling a longer battery life. This sensor detects 280-390nm light most effectively. This is categorized as part of the UVB burning rays spectrum and most of the UVA tanning rays spectrum. It outputs a analog voltage that is linearly related to the measured UV intensity mW/cm2 . If your microcontroller can do an analog to voltage conversion then you can detect the level of UV.
• Weather Station
• UV Index Monitoring
• DIY UV electronic project,etc...

Specification
• Supply Voltage DC 5V
• Operating Temperature -20~70°C
• Sensitivity and UV-B
• Sensitivity Wave Length:280-390nm
• Module Size 30 x 22mm

Connection Diagram

ML8511 UV Sensor Diagram

The ML8511 intensity graph

The ML8511 intensity graph Mapping the outputVoltage to intensity is straight forward. No UV light starts at 1V with a maximum of 15mW/cm2 at around 2.8V. Arduino has a built-in map function, but map does not work for floats. Thanks to users on the Arduino forum, we have a simple mapFloat function //The Arduino Map function but for floats //From float mapfloat float x, float in_min, float in_max, float out_min, float out_ max
return x - in_min * out_max - out_min / in_max - in_min + out_min The following line converts the voltage read from the sensor to mW/cm2 intensity:
float uvIntensity = mapfloat outputVoltage, //Convert the voltage to a UV intensity level

Sample Code
* UV Sensor v1.0-ML8511 *
arch=uv&description=true> * This example reads UV intensity from UV Sensor v1.0-ML8511. * * Created 2014-9-23 * By Phoebe * Modified 2014-9-23 * By Phoebe * * GNU Lesser General Public License. * See for details. * All above must be included in any redistribution
/***********Notice and Trouble shooting*************** * 1.Connect ML8511 UV Sensor to Arduino A0 * 2.This code is tested on Arduino Uno, Leonardo, Mega boards.
int ReadUVintensityPin = A0 //Output from the sensor
void setup
pinMode ReadUVintensityPin, INPUT ;

Serial.begin 9600 //open serial port, set the baud rate to 9600 bps Serial.println "Starting up..." ;
void loop
int uvLevel = averageAnalogRead ReadUVintensityPin ;
float outputVoltage = * uvLevel/1024 float uvIntensity = mapfloat outputVoltage,

Serial.print "UVAnalogOutput " Serial.print uvLevel ;

Serial.print " OutputVoltage " Serial.print outputVoltage ;

Serial.print " UV Intensity " Serial.print uvIntensity Serial.print "

Serial.println delay 100 ;
//Takes an average of readings on a given pin //Returns the average int averageAnalogRead int pinToRead
byte numberOfReadings = 8 unsigned int runningValue = 0;
for int x = 0 x < numberOfReadings x++
runningValue += analogRead pinToRead runningValue /= numberOfReadings return runningValue //The Arduino Map function but for floats //From float mapfloat float x, float in_min, float in_max, float out_min, float out_ max return x - in_min * out_max - out_min / in_max - in_min + out_min;

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Datasheet ID: SEN0175 509091