Difference between revisions of "Sensor-Light-A1"

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{{Language|Microduino-Lightness}}
 
{{Language|Microduino-Lightness}}
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{| style="width: 800px;"
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{| style="width: 80%;"
 
|-
 
|-
 
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==Description of the Sensor Pin==
 
==Description of the Sensor Pin==
−
{{Sensor_explain
+
{{ST_Pinout
−
|nameA=[[Sensor-Light-A1]]
+
|st_name=Light A1 Sensor
−
|modeA=Analog signal input
+
|pin3=Analog Input
−
|modeB=NC
 
 
}}
 
}}
 +
 
==Feature==
 
==Feature==
 
*Resistance photosensitive element, with high sensitivity.
 
*Resistance photosensitive element, with high sensitivity.
Line 36: Line 36:
 
   
 
   
 
==Document==
 
==Document==
−
*Schematic diagram: '''[[File: Sensor-Light-A1.Zip.pdf]]'''
+
*Schematic diagram:  
−
*Main sensor: '''[[File: Sensor-Light-A1 datasheet.pdf]]'''
+
*Main sensor:
 +
 
 +
==Usage==
 +
 
 +
===Basic Functionality===
 +
The Light Sensor is an analog input sensor. It is able to detect light levels by using a photoresistor. A photoresistor is sensitive to the amount of light and changes its resistance based on light levels. When used in a voltage divider, different voltage levels will be produced based on the amount of light. A Core module can read the voltage value.
 +
{| class="wikitable"
 +
|+Light Sensor State Table
 +
|-
 +
! Light Amount
 +
! Value Produced
 +
|-
 +
|No Light
 +
|<200
 +
|-
 +
|Finger Covering the Sensor
 +
|200~300
 +
|-
 +
|Ambient Light
 +
|700~900
 +
|-
 +
|10 Inches from the Sun
 +
|1023
 +
|}
 +
 
 +
===Programming===
 +
<tab name="Arduino for Microduino" style="width:100%;">
 +
==Introduction==
 +
The Light Sensor is used as an analog input pin. Therefore, the '''pinMode''' and '''analogRead''' functions will be used.
 +
==Key Functions==
 +
*Required Libraries: None
 +
*Key Functions:
 +
** '''pinMode(pin_number, pin_mode)''' - sets the mode for the pin
 +
***'''pin_number''' - is the pin number that the sensor is connected to
 +
***'''pin_mode''' - is the mode to set the pin to. Either '''INPUT''' or '''OUTPUT'''
 +
** '''analogRead(pin_number)''' - Reads the value of the pin, between 0 and 1023
 +
***'''pin_number''' - is the pin number that the sensor is connected to
 +
 
 +
==Example==
 +
This is a simple example which outputs the value of the Light Sensor to the serial port terminal.
 +
 
 +
'''Note''': Important lines of code are highlighted.
 +
 
 +
<syntaxhighlight lang="cpp" highlight="1,2,3,11,12,18,19">
 +
//Define the pin the sensor is connected to
 +
//Note: This sensor uses analog read, which means only pins denoted with an 'A' prefix will work.
 +
const int LIGHT_SENSOR_PIN = A0;
 +
 
 +
void setup(){
 +
  // put your setup code here, to run once:
 +
 
 +
  //Initial serial communication port at 9600 baud
 +
  Serial.begin(9600);
 +
 
 +
  //Configure the pin into input mode
 +
  pinMode(LIGHT_SENSOR_PIN, INPUT);
 +
}
 +
 
 +
void loop(){
 +
  // put your main code here, to run repeatedly:
 +
 
 +
  //Perform a digital read and store the value into pin_state variable
 +
  int pin_value = analogRead(LIGHT_SENSOR_PIN);
 +
 
 +
  //Print out the current value of the sensor
 +
  Serial.println(pin_value);
 +
 
 +
  //delay 10ms between loops
 +
  delay(10);
 +
}
 +
</syntaxhighlight>
 +
Copy and paste the code above to the Arduino IDE or
 +
 
 +
Download the above example: n/a
 +
 
 +
*Open the Serial Monitor (magnifier glass on top right) and set 9600 baud. This will display the serial output.
 +
</tab>
  
−
==Development==
 
 
===Program Download===
 
===Program Download===
 
*Download and unzip the program '''[[File:Sensor-Light-A1 Test.zip]]'''
 
*Download and unzip the program '''[[File:Sensor-Light-A1 Test.zip]]'''
Line 59: Line 134:
 
===Result===
 
===Result===
 
*After download, open the serial monitor.  
 
*After download, open the serial monitor.  
−
*The value displayed on serial monitor reflects the current light intensity detected by the sensor.  
+
*The value displayed on serial monitor reflects the current light intensity detected by the sensor.
  
 
==Application==
 
==Application==
Line 65: Line 140:
 
It can be used to detect the light intensity, and control the indoor lighting and object shading and so on.  
 
It can be used to detect the light intensity, and control the indoor lighting and object shading and so on.  
 
===Project===
 
===Project===
−
* '''[[Uses of Light Sensor]]'''
+
* '''[[Usage of Light Sensor]]'''
−
 
 
  
 
==Purchase==
 
==Purchase==
Line 75: Line 149:
  
 
*Front
 
*Front
−
[[file: Microduino-Light-F.JPG|thumb|600px|center|Microduino-Light Front]]
+
[[file: Microduino-Light-F.JPG|thumb|600px|center|Sensor-Light Front]]
 
*Back
 
*Back
−
[[file: Microduino-Light -b.JPG|thumb|600px|center|Microduino-Light Back]]
+
[[file: Microduino-Light -b.JPG|thumb|600px|center|Sensor-Light Back]]
 
|}
 
|}

Latest revision as of 20:51, 18 August 2017

Language: English  • 中文
Microduino-Lightness

The product number of Sensor-Light-A1 is: MSDT42

Sensor-Light-A1 is a photosensitive brightness detection sensor module.


The light sensor transforms the light signal into electric signal with the photosensitive resistance. Its sensitive wavelength is near that of the visible light, including the infrared and the ultraviolet.

Description of the Sensor Pin

Sensor backpin.png

Light A1 Sensor
General Pin Out Sensor / Trinket's Pin Out
PIN1 (GND) GND
PIN2 (VCC) VCC
PIN3 (SIGNAL-A) Analog Input
PIN4 (SIGNAL-B) Not Connected
  • General Pin Out is the standard pin out of a Sensor / Trinket connector.
  • Sensor / Trinket's Pin Out is this specific Sensor / Trinket's wiring in relation to the General Pin Out.
  • SIGNAL-A / SIGNAL-B are signals that could be digital input, digital output, analog input or analog output. Or special signals such as serial communication (SoftwareSerial, IIC (I2C), etc) or other special signals.
  • Not Connected refers to the Pin not being used for this particular Sensor / Trinket.
  • Read more about the hub module.

Feature

  • Resistance photosensitive element, with high sensitivity.

Specification

  • Sensor voltage
    • 3.3V~5V working voltage
  • Size of the sensor
    • Size of the board: 23.5mm*13mm;
    • 1.27mm-spacing 4Pin interface connected with sensorhub;
    • CAD drawing of the sensor: File:Sensor CAD.zip
  • Function description
    • The sensor outputs the corresponding voltage according to the detected light intensity.
  • Connection
    • This sensor can be connected to the following interfaces of core: A0~A7

Document

  • Schematic diagram:
  • Main sensor:

Usage

Basic Functionality

The Light Sensor is an analog input sensor. It is able to detect light levels by using a photoresistor. A photoresistor is sensitive to the amount of light and changes its resistance based on light levels. When used in a voltage divider, different voltage levels will be produced based on the amount of light. A Core module can read the voltage value.

Light Sensor State Table
Light Amount Value Produced
No Light <200
Finger Covering the Sensor 200~300
Ambient Light 700~900
10 Inches from the Sun 1023

Programming

Introduction

The Light Sensor is used as an analog input pin. Therefore, the pinMode and analogRead functions will be used.

Key Functions

  • Required Libraries: None
  • Key Functions:
    • pinMode(pin_number, pin_mode) - sets the mode for the pin
      • pin_number - is the pin number that the sensor is connected to
      • pin_mode - is the mode to set the pin to. Either INPUT or OUTPUT
    • analogRead(pin_number) - Reads the value of the pin, between 0 and 1023
      • pin_number - is the pin number that the sensor is connected to

Example

This is a simple example which outputs the value of the Light Sensor to the serial port terminal.

Note: Important lines of code are highlighted. 

//Define the pin the sensor is connected to
//Note: This sensor uses analog read, which means only pins denoted with an 'A' prefix will work.
const int LIGHT_SENSOR_PIN = A0;

void setup(){
  // put your setup code here, to run once:

  //Initial serial communication port at 9600 baud
  Serial.begin(9600);

  //Configure the pin into input mode
  pinMode(LIGHT_SENSOR_PIN, INPUT);
}

void loop(){
  // put your main code here, to run repeatedly:

  //Perform a digital read and store the value into pin_state variable
  int pin_value = analogRead(LIGHT_SENSOR_PIN);

  //Print out the current value of the sensor
  Serial.println(pin_value);

  //delay 10ms between loops
  delay(10);
}

Copy and paste the code above to the Arduino IDE or

Download the above example: n/a

  • Open the Serial Monitor (magnifier glass on top right) and set 9600 baud. This will display the serial output.

Program Download

Programming

  • Follow the Software Getting Started Guide.
  • Select the Board, Processor and Port.
  • Click [File]->[Open], browse to the project program address, and click "Microduino_Light_A1.ino" to open the program.
  • After confirming all these items are correct, click "→" to download the program to the development board.

Hardware Setup

  • Referring to the following diagram, connect the Sensor-Light_A1 to the analog port A0/A1 of Microduino-Sensorhub.


Microduino-sLight A1.JPG


Result

  • After download, open the serial monitor.
  • The value displayed on serial monitor reflects the current light intensity detected by the sensor.

Application

It can feel the intensity of light around us. It can be used to detect the light intensity, and control the indoor lighting and object shading and so on.

Project

Purchase

History

Gallery

  • Front
File:Microduino-Light-F.JPG
Sensor-Light Front
  • Back
File:Microduino-Light -b.JPG
Sensor-Light Back
Retrieved from "https://wiki.microduinoinc.com/index.php?title=Sensor-Light-A1&oldid=21635"