Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Operating Voltage | 3.3V - 5V DC |
| Output Type | Digital Switch (DO) & Analog (AO) |
| Detection Component | High Sensitivity Photodiode |
| Adjustable Sensitivity | Yes, via Potentiometer |
| Pin Configuration | 3-Pin and 4-Pin Options |
| Indicator LED | Power and Output Status LEDs |
| Comparator Chip | LM393 Dual Comparator |
| Board Dimensions | 32mm x 14mm x 5mm |
| Mounting Hole Diameter | 3.0mm |
| Application Range | Light Control, Robotics, DIY Electronics |
Anonymous
Mar 17, 2026
Rating: 5/5
Fast shipping and great performance
Arrived quickly and well-packaged. Tested immediately upon arrival; the LM393 comparator gives a sharp transition between high and low states. Highly recommended for automation tasks.
Anonymous
Mar 17, 2026
Rating: 5/5
Perfect for my Arduino project
This photodiode module worked flawlessly with my Arduino Uno. The sensitivity adjustment is very responsive, allowing me to set the exact light threshold needed for my automatic night light project.
Anonymous
Mar 11, 2026
Rating: 4/5
Good value, clear instructions needed
The sensor itself is high quality and reacts quickly to changes in light. I deducted one star because the pinout wasn't clearly labeled on the board, but a quick multimeter check sorted it out.
Anonymous
Mar 10, 2026
Rating: 5/5
Reliable and compact
I bought five of these for a line-following robot chassis. They are small, lightweight, and provide consistent analog readings. The digital output is also clean with no bouncing.
Anonymous
Mar 09, 2026
Rating: 4/5
Solid component for learning
Used this in a university electronics lab. It's robust enough to handle student handling and provides clear voltage changes. The 3-pin version is slightly easier to wire for beginners.
Anonymous
Mar 02, 2026
Rating: 5/5
Great sensitivity range
Impressed by how well the potentiometer works. You can tune it from detecting bright sunlight to just a dim room lamp. Exactly what I needed for my smart blinds controller.
Q: Are the mounting holes standard size for M3 screws?
A: The mounting holes are approximately 3.0mm in diameter, which fits M3 screws perfectly for secure installation on your project chassis or breadboard adapters.
Q: Can I connect this directly to a 3.3V microcontroller like ESP32?
A: Yes, the module operates comfortably within the 3.3V to 5V range, making it fully compatible with ESP32, ESP8266, and 3.3V Arduino boards without level shifters.
Q: What is the maximum current this sensor can switch?
A: The digital output is designed for logic signals and should not be used to drive high-current loads directly. Please use a relay or transistor if you need to control motors or high-power lights.
Q: Does this module output analog voltage or just digital signals?
A: This module features both outputs. The AO pin provides an analog voltage proportional to light intensity, while the DO pin provides a digital high/low signal based on your threshold setting.
Q: Is the potentiometer for adjusting brightness threshold or gain?
A: The onboard potentiometer adjusts the reference voltage for the comparator, effectively setting the light intensity threshold at which the digital output switches state.
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