Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	3.3V - 5V DC
Output Type	Digital (DO) and Analog (AO)
Pin Configuration	3-Pin / 4-Pin Compatible
Detection Wavelength	700nm - 1100nm
Potentiometer	Adjustable Sensitivity Control
Comparator Chip	LM393
PCB Size	32mm x 14mm
Mounting Hole Diameter	3mm
Response Time	< 1ms
Application Compatibility	Arduino, Raspberry Pi, ESP32

6 reviews

Anonymous

Mar 29, 2026

Rating: 4/5

Good value, clear instructions needed

The sensor itself is high quality and responds quickly to light changes. I deducted one star because there were no printed instructions included, but I found plenty of examples online. Great for the price.

Anonymous

Mar 23, 2026

Rating: 5/5

Perfect for my solar tracker project

This photodiode module works exactly as described. The sensitivity adjustment via the potentiometer is very smooth, allowing me to calibrate it perfectly for outdoor lighting conditions. Easy to wire up to my Arduino.

Anonymous

Mar 19, 2026

Rating: 4/5

Great for learning electronics

Bought this for a university project. It helped me understand analog vs digital signals clearly. The LM393 comparator is a nice touch for stable switching. Works well with 3.3V logic too.

Anonymous

Mar 18, 2026

Rating: 5/5

Reliable brightness detection

I used this to automate my desk lamp based on room brightness. The digital output switches cleanly without flickering. The 4-pin layout makes it versatile for different breadboard setups.

Anonymous

Mar 17, 2026

Rating: 5/5

Exceeded expectations

Very sensitive even in low light conditions. I was able to detect subtle changes in brightness for my smart home automation system. Shipping was fast and the packaging protected the pins well.

Anonymous

Mar 14, 2026

Rating: 5/5

Compact and efficient

Small footprint but robust performance. I integrated four of these into a robot for line following and light seeking behaviors. They all performed consistently with minimal calibration differences.

5 FAQ

Q: Can this module be directly connected to a 5V Arduino Uno?

A: Yes, this module operates comfortably within the 3.3V to 5V range, making it fully compatible with the Arduino Uno's 5V logic levels.

Q: Does this come with header pins soldered?

A: No, the module typically ships without header pins soldered to allow flexibility for direct wire soldering or using your own preferred headers. You will need to solder them yourself.

Q: Is this sensor suitable for detecting infrared remote control signals?

A: While it has some sensitivity in the near-infrared spectrum, it is primarily designed for ambient light detection. For decoding IR remote signals, a dedicated TSOP IR receiver module is recommended.

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

A: AO (Analog Output) provides a variable voltage corresponding to the light intensity, while DO (Digital Output) gives a HIGH or LOW signal when the light crosses the threshold set by the potentiometer.

Q: How do I adjust the sensitivity of the sensor?

A: You can adjust the sensitivity by turning the blue potentiometer on the board clockwise to increase sensitivity or counter-clockwise to decrease it while exposing the sensor to your target light level.

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