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Home / Computer Hardware, Monitors & Peripherals / Ambient Light Intensity Detection Module for Arduino Photoresistor Sensor

Attributes

Brand -
Category Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin -
Operating Voltage 3.3V - 5V DC
Output Signal Digital (DO) and Analog (AO)
Sensor Element Photoresistor (LDR)
Detection Range 100 - 10000 Lux (Approximate)
PCB Dimensions 32mm x 14mm x 8mm
Mounting Hole Diameter 3mm
Comparator IC LM393 Wide Voltage Comparator
Interface Type 3-Pin PH2.54 Connector
Adjustment Sensitivity Potentiometer
Net Weight 2.5 grams

5 reviews

A

Anonymous

Mar 30, 2026

Rating: 5/5

Perfect Arduino match

Plug and play with my Uno board. The pinout is standard and the example code found online works immediately.

A

Anonymous

Mar 18, 2026

Rating: 3/5

Needs calibration

Had to spend time adjusting the threshold for digital output. It works but expect to tweak settings for your specific environment.

A

Anonymous

Mar 14, 2026

Rating: 5/5

High quality build

Soldering is solid and the PCB looks professional. No issues with noise on the signal line during testing.

A

Anonymous

Feb 20, 2026

Rating: 5/5

Great for automation

Used this for a smart lamp project and it works flawlessly. The analog output gives nice granular data for adjusting brightness levels.

A

Anonymous

Feb 04, 2026

Rating: 4/5

Good but sensitive

Works well however the sensitivity potentiometer is quite touchy. Took some time to calibrate exactly where I wanted it.

5 FAQ

Q: Does this module support 3.3V logic levels?

A: Yes, the module operates comfortably between 3.3V and 5V, making it suitable for both Arduino and ESP32 projects.

Q: What is the maximum cable length for the sensor?

A: We recommend keeping connection wires under 50cm to prevent signal noise and voltage drop issues.

Q: Do I need a specific library to use this?

A: No specific library is required. You can read the analog pin using standard analogRead functions in the Arduino IDE.

Q: Is this sensor waterproof for outdoor use?

A: No, this module is not waterproof. It is designed for indoor use or must be housed in a protective enclosure for outdoors.

Q: Is the output analog, digital, or both?

A: This module provides both Analog (AO) for continuous light levels and Digital (DO) for threshold switching.

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