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Blue PCB Electronics

2D11 Photoresistor Sensor Module Light Detection

2D11 Photoresistor Sensor Module Light Detection

Regular price Dhs. 25.00
Regular price Dhs. 25.00 Sale price Dhs. 25.00
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A Photoresistor Light Sensor Module for Arduino is a device that measures the amount of light in the environment and provides an output signal that can be used to control other devices. The module consists of a photoresistor, which is a type of resistor that changes resistance based on the amount of light it receives, and a circuit that converts the photoresistor’s resistance into a signal that the Arduino can understand. The user can program the Arduino to perform specific tasks based on the light level measured by the photoresistor. This opens up a wide range of possibilities for projects, such as controlling lights or motors, or creating light-sensitive displays. The Photoresistor Light Sensor Module is easy to use, compact, and affordable, making it a popular choice for Arduino enthusiasts and hobbyists.


  • Color: Blue + Black
  • Material: Plastic + Copper + PCB
  • Detect brightness and light intensity surrounding
  • Sensitivity adjustable (Blue digital potentiometer adjustment)
  • Working voltage: 3.3V~5V
  • Output: Analog voltage output, digital switch output (0, 1)
  • With installation holes, easy to use
  • Small boars size: 3cm x 1.6cm
  • Power indicator: Red
  • Digital switch output indicator: Green
  • Uses LM393 chip comparator, work stability
  • 4-wire connection
  • VCC: External 3.3V~5V
  • GND: External GND
  • DO: Small board digital output port (0, 1)
  • AO: Small board analog output port
  • Great for DIY project 



int photocellPin = A0;    // select the input pin for the photoresistor
int val = 0;       // variable to store the value coming from the sensor 

void setup() { 
  Serial.begin(9600);//Set the baudrate to 9600,make sure it's same as your software settings
 // pinMode(ledPin, OUTPUT);  // declare the ledPin as an OUTPUT  
   pinMode(photocellPin, INPUT);  // declare the ledPin as an OUTPUT  

void loop() { 
  val = analogRead(photocellPin);   // read the value from the sensor  
  Serial.println(val);   //The serial will print the light value