LM393 Photosensitive Light-Dependent Control Sensor LDR Module 4 Pin

Description:

• This module combines a Light Dependent Resistor (LDR) with an LM393 voltage comparator. This combination allows for the detection of varying light levels and the generation of digital or analog output signals.   
• It's designed to sense ambient light and provide a signal that can be used to control other electronic devices.   

Key Features:

• LDR Sensor: Detects changes in light intensity.   
• LM393 Comparator: Provides a clear digital output based on the light level.
• Adjustable Sensitivity: A potentiometer allows users to fine-tune the light level at which the module triggers.   
• Digital and Analog Outputs: Offers both digital (DO) and analog (AO) outputs for versatile integration.   
• Operating Voltage: Typically operates on 3.3V to 5V.   
• Signal Indicator LED: Provides visual feedback of the module's output status.   
• 4-Pin Interface: Easy connection with VCC, GND, DO (Digital Output), and AO (Analog Output) pins.   

Applications:

• Light-Controlled Switches: Automating lighting systems based on ambient light.   
• Security Systems: Detecting changes in light for intrusion detection.
• Robotics: Light-following robots or light-sensitive behaviors.
• Street Lighting Control: Automatically adjusting streetlights based on daylight.   
• Photography: Light metering and triggering flashes.
• Ambient Light Detection: Measuring the brightness of the surrounding environment.   

Specifications:

• Operating Voltage: 3.3V - 5V DC   
• Output: Digital (DO) and Analog (AO)   
• Comparator IC: LM393   
• Sensor: Light Dependent Resistor (LDR)   
• Sensitivity Adjustment: Potentiometer   
• Pins: VCC, GND, DO, AO

DATA SHEET AND USECASE

Key Features:

• Operating Voltage: 3.3V to 5V
• Outputs:
  • Digital Output (D0): Provides a binary signal indicating whether the light intensity is above or below a set threshold.
  • Analog Output (A0): Delivers a continuous voltage proportional to the light intensity, allowing for precise measurements.
• Adjustable Sensitivity: Equipped with a potentiometer to set the desired light threshold for the digital output.
• Indicator LED: Lights up when the digital output is active, providing a visual cue of the module's status.
• Compact Design: Features a mounting hole for easy installation in various projects.