Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	3.3V - 5V DC
Output Type	Digital Switch (DO) & Analog (AO)
Pin Configuration	4-Pin (VCC, GND, DO, AO)
Detection Component	High Sensitivity Photodiode
Adjustable Threshold	Yes, via Potentiometer
Indicator LED	Power and Output Status LEDs
PCB Dimensions	32mm x 14mm x 5mm
Mounting Hole Diameter	3.0mm
Compatible Platforms	Arduino, Raspberry Pi, STM32
Application Range	Light Control, Brightness Detection, Smart Lighting

6 reviews

Anonymous

Mar 28, 2026

Rating: 5/5

Perfect for Arduino Projects

This sensor module works flawlessly with my Arduino Uno. The analog output gives smooth readings for light intensity, and the digital threshold is easy to adjust with the onboard potentiometer. Great value for the price.

Anonymous

Mar 17, 2026

Rating: 5/5

Does exactly what it says

Simple plug-and-play functionality. I connected it to a 5V relay module to control a lamp based on ambient light, and it switched perfectly at dusk. The adjustment screw allows for precise tuning.

Anonymous

Mar 15, 2026

Rating: 4/5

Great for classroom kits

We use these in our robotics workshop. They are durable enough for students to handle and solder. One unit had a slightly loose header pin, but it was an easy fix. Overall, a solid educational tool.

Anonymous

Mar 03, 2026

Rating: 5/5

Excellent Analog Response

The analog output voltage scales linearly with light intensity in my testing environment. It made calibrating my data logging script very straightforward. No noise issues observed.

Anonymous

Mar 02, 2026

Rating: 4/5

Good sensitivity, clear instructions needed

The photodiode is very sensitive and reacts quickly to changes in light. I wish it came with a printed pinout diagram, but I found the details online easily. Works great for my automatic night light project.

Anonymous

Mar 01, 2026

Rating: 5/5

Reliable and Compact

I bought five of these for a home automation system. All of them performed consistently. The form factor is small enough to fit into tight enclosures. Highly recommended for hobbyists.

5 FAQ

Q: How do I calibrate the sensitivity for my specific room lighting?

A: Use a small screwdriver to turn the blue potentiometer on the board while monitoring the DO pin or the status LED. Turn it until the output switches at your desired light level.

Q: Is the photodiode sensitive to infrared light or only visible light?

A: The photodiode is primarily sensitive to visible light, though it may have some minor response to near-infrared wavelengths. It is optimized for general ambient light detection applications.

Q: What is the difference between the DO and AO pins?

A: The AO (Analog Output) pin provides a continuous voltage proportional to the light intensity. The DO (Digital Output) pin acts as a switch that goes high or low when the light level crosses the threshold set by the potentiometer.

Q: Does this come with jumper wires included?

A: No, the package includes only the sensor module itself. Jumper wires and headers need to be purchased separately if you do not already have them.

Q: Can this module be used directly with a 3.3V microcontroller like ESP32?

A: Yes, the module supports an operating voltage range of 3.3V to 5V, making it fully compatible with 3.3V logic systems like the ESP32 or ESP8266 without needing a level shifter.

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