LM393 LDR module for Arduino to detect the level of light/darkness.
- 1 Photosensitive Resistance module's most sensitive to ambient light, commonly used to detect environment around the device.
- 2 The sensivity of the auto-trigger can be changed or can be read by an Arduino as analog voltage.
- 3 the DO output can be directly connected to a microcontroller, through single chip microcomputer to detect the high and low
- level, thus to detect the environment light intensity changes;
- 4 the DO output can be directly driven out a relay module, which can form a light-operated switch.
- 1 Using photosensitive resistance sensor sensitive type;
- 2 Working Voltage:3.5V-5V;
- 3 Output form:Digital Switch show (0 and 1);
- 4 Fixed Bolt Hole,easy installation;
- 5 Small PCB size:3.2CM*1.7CM;
- 6 the comparator output, signal clean, good waveform, driving ability is strong, for more than 15 ma;
- 7 with adjustable potentiometer to adjust light brightness;
- N/A
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LM393 Light Detection Sensor Module Tutorial: Analog Light Sensing, Digital Thresholds, and Arduino Examples
This tutorial is a comprehensive, practical guide to the LM393 Light Detection Sensor Module (Leobot Product #222). This module combines a photoresistor (LDR) with an LM393 comparator, providing both analog light level output and a digital ON/OFF output with an adjustable threshold. You will learn how the module works internally, how to wire it correctly, how to tune the sensitivity, and how to use it reliably with Arduino.
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