Difference between revisions of "Sensor-Light-A1"

• 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.

Programming

//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);
}

Program Download

• Download and unzip the program File:Sensor-Light-A1 Test.zip

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.

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

• Usage of Light Sensor

Purchase

History

Gallery

• Front

• Back