Objective

This experiment uses the TSL2561 light sensor to measure ambient light intensity.

Required Components

• TSL2561 Light Sensor
• Arduino Board (e.g., Arduino Uno)
• Jumper wires
• Breadboard

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Working Principle

The TSL2561 sensor uses both infrared and visible light to measure the total light intensity.

Circuit Diagram

Arduino Code

/*
 * Light Measurement using TSL2561
 * This code reads the light intensity from the TSL2561 sensor.
 */

#include 
#include 
#include 

Adafruit_TSL2561_Unified tsl = Adafruit_TSL2561_Unified(12345);

void setup() {
  Serial.begin(9600);  
  if (!tsl.begin()) {
    Serial.println("Sensor not found");
    while (1);
  }
}

void loop() {
  sensors_event_t event;
  tsl.getEvent(&event);
  
  if (event.light) {
    Serial.print("Light Level: ");
    Serial.println(event.light);
  }
  delay(1000);
}
            

Results

The serial monitor will display the measured light intensity in lux.

Applications

• Smart lighting systems
• Ambient light monitoring
• Photography and cinematography lighting setups

Conclusion

The TSL2561 light sensor provides an efficient method for measuring ambient light levels, useful in applications like smart lighting systems and light-sensitive devices.