LM393 Light-Dependent Resistor Sensor Module - Digital/Analog Output
The LM393 Light-Dependent Resistor Sensor Module provides both digital and analog outputs for ambient light detection, compatible with 3.3V and 5V microcontroller systems like Arduino and Raspberry Pi. It features an adjustable sensitivity potentiometer and a built-in indicator LED for signal output status.
Features
- Dual Output: Provides digital (DO) switch signal and analog (AO) voltage output for flexible light intensity measurement.
- Adjustable Sensitivity: Integrated blue digital potentiometer allows precise threshold calibration for the digital output.
- Wide Voltage Compatibility: Operates from 3.3V to 5V DC, making it suitable for both 3.3V logic (Raspberry Pi, ESP32) and 5V logic (Arduino) systems.
- Integrated LM393 Comparator: Ensures clean, stable digital output switching with minimal bounce.
- Compact & Mountable: Features a 33mm x 14mm PCB with mounting holes for secure installation.
Out of stock
This module utilizes a high-quality LM393 voltage comparator paired with a sensitive photoresistor (LDR) to convert changes in ambient light intensity into a clean digital signal or a proportional analog voltage. The comparator design ensures a Sharp Microelectronics, bounce-free digital output when the light level crosses a user-defined threshold set by the onboard potentiometer.
The analog output provides a continuous voltage signal proportional to light intensity, which can be read by an ADC (Analog-to-Digital Converter) on a microcontroller for more precise light level monitoring. The module includes a status LED that illuminates when the digital output is triggered, providing immediate visual feedback. Its robust design and simple 4-pin interface (VCC, GND, DO, AO) make it ideal for integration into DIY electronics, educational projects, and basic industrial control systems.
Additional Information
| Weight | 0.004 kg |
|---|---|
| Dimensions | 3.3 × 1.4 cm |
