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Photoresistor LDR Light Sensor Module 4 Pin Digital and Analog Robotics Bangladesh
  • Photoresistor LDR Light Sensor Module 4 Pin Digital and Analog Robotics Bangladesh

Photoresistor LDR Light Sensor Module 4 Pin Digital and Analog

RBD-4197

The Photoresistor LDR Light Sensor Module is designed to detect ambient brightness and light intensity. It is simple to use and ideal for microcontroller-based projects. The module supports both Analog and Digital outputs, allowing flexible integration depending on your application.

BDT 90
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98 Items

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Description

The Photoresistor LDR Light Sensor Module is designed to detect ambient brightness and light intensity. It is simple to use and ideal for microcontroller-based projects. The module supports both Analog and Digital outputs, allowing flexible integration depending on your application.

The digital output can be adjusted using the onboard potentiometer. When the ambient light level crosses the preset threshold, the D0 pin switches between HIGH and LOW, making this module suitable for automatic light-controlled switching applications.

Features

  • Detects ambient brightness and light intensity

  • Adjustable sensitivity via onboard potentiometer

  • Supports Analog Output (A0) and Digital Output (D0)

  • Operating voltage: 3.3V – 5V

  • Uses LM393 comparator for stable performance

  • Power indicator LED (red)

  • Digital output indicator LED (green)

  • Mounting hole for easy installation

  • Compact PCB size

Pin Configuration

  • VCC – 3.3V to 5V power input

  • GND – Ground

  • D0 (DO) – Digital output (TTL HIGH / LOW)

  • A0 (AO) – Analog voltage output

How It Works

  • The module uses a photoresistor (LDR) to sense light intensity.

  • When the light level reaches the user-defined threshold:

    • D0 outputs HIGH or LOW depending on the setting.

  • Digital Output (D0):

    • Connect directly to a microcontroller to detect light changes

    • Can directly drive a relay module to form a light-activated switch

  • Analog Output (A0):

    • Connect to an ADC pin to obtain more precise light intensity values

Specifications

  • Operating Voltage: 3.3V – 5V

  • Output Type: Analog (A0) and Digital (D0)

  • Comparator IC: LM393

  • PCB Size: Approx. 3.0 × 1.6 cm

Applications

  • Automatic light control systems

  • Day/Night detection

  • Smart home and IoT projects

  • Arduino, ESP8266, ESP32, Raspberry Pi projects

  • Educational and DIY electronics projects

Product Details
RBD-4197
98 Items

Specific References

EAN13
4197
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