Product Description:
The 4-Pin Photosensitive Sensor Module is designed to detect light intensity and control electronic devices based on ambient light levels. This module utilizes a light-dependent resistor (LDR) to sense light and provide a corresponding output signal. It is ideal for a variety of applications including automatic lighting control, light-activated alarms, and smart home projects.
Technical Specifications:
- Operating Voltage: 3.3V to 5V
- Output Type: Digital and Analog
- Sensitivity: Adjustable via onboard potentiometer
- Sensor Type: Light-Dependent Resistor (LDR)
- Output Current: Up to 15mA
- Dimensions: Compact size for easy integration
- Interface: 4-pin header (VCC, GND, DO, AO)
Pin Configuration:
- VCC (Pin 1): Connect to the power supply (3.3V to 5V).
- GND (Pin 2): Connect to ground.
- DO (Digital Output, Pin 3): Outputs a digital signal (HIGH or LOW) based on the light intensity threshold set by the potentiometer.
- AO (Analog Output, Pin 4): Outputs an analog voltage proportional to the light intensity.
Features:
- Dual Outputs: Provides both digital and analog outputs for versatile use.
- Adjustable Sensitivity: Onboard potentiometer allows customization of the light threshold for the digital output.
- Wide Operating Voltage: Compatible with both 3.3V and 5V systems.
- Compact Design: Small form factor for easy integration into various projects.
- Easy to Interface: Standard 4-pin header for straightforward connections to microcontrollers and other devices.
Applications:
- Automatic lighting control
- Light-activated alarms and alerts
- Smart home projects
- Daylight harvesting systems
- Ambient light sensing
- Solar tracking systems
Usage Tips:
- Connecting the Module:
- Connect the VCC pin to the power supply (3.3V or 5V).
- Connect the GND pin to the ground of your system.
- Connect the DO pin to a digital input on your microcontroller if you need a digital signal.
- Connect the AO pin to an analog input on your microcontroller if you need an analog signal proportional to the light intensity.
- Adjusting Sensitivity:
- Use the onboard potentiometer to adjust the sensitivity threshold for the digital output. Turn the potentiometer until the desired light threshold is reached.
- Reading the Output:
- For digital output, monitor the DO pin. It will output HIGH when the light intensity is above the threshold and LOW when it is below.
- For analog output, read the voltage on the AO pin. This voltage will vary with the light intensity, providing a more granular measurement.
The 4-Pin Photosensitive Sensor Module is a versatile and reliable component for detecting light intensity and controlling electronic devices based on ambient light levels. Its dual output options and adjustable sensitivity make it suitable for a wide range of applications in automation and smart home projects.
Package Includes:
1x 4-Pin Photosensor Module