Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Operating Voltage | 3.3V - 5V DC |
| Output Type | Digital High-Level |
| Laser Wavelength | 650nm (Red) |
| Detection Range | Up to 2 meters (depending on ambient light) |
| Interface | 3-Pin Header (VCC, GND, OUT) |
| Modulation | Non-Modulated Continuous Wave |
| PCB Dimensions | 35mm x 15mm x 8mm |
| Mounting Hole Diameter | 3mm |
| Primary Application | Obstacle Detection & Line Tracking |
| Compatibility | Arduino, Raspberry Pi, ESP32 |
Anonymous
Mar 27, 2026
Rating: 3/5
Works but struggles in sunlight
As expected for a non-modulated receiver, it gets confused in direct sunlight. It performs perfectly in indoor or shaded environments though. Just know its limitations before buying.
Anonymous
Mar 22, 2026
Rating: 4/5
Solid component for the price
No issues with functionality. The pins are well-soldered. I deducted one star because the included header pins were slightly bent, but that was an easy fix.
Anonymous
Mar 19, 2026
Rating: 5/5
Reliable and compact
I bought five of these for a school project. All of them worked out of the box. The form factor is small enough to fit on tight chassis designs. Highly recommended for students.
Anonymous
Mar 14, 2026
Rating: 5/5
Great educational tool
Bought this to teach my kids about sensors. The wiring is simple, and there are plenty of code examples online. The laser emission is visible and helps visualize the beam path.
Anonymous
Mar 12, 2026
Rating: 4/5
Good sensitivity, needs calibration
The sensor is very sensitive to ambient light, so I had to adjust the potentiometer on the board. Once calibrated, it works great for line-following robots. Instructions could be clearer.
Anonymous
Mar 09, 2026
Rating: 5/5
Perfect for my robotics project
This sensor module worked flawlessly with my Arduino Uno. The high-level output is easy to read, and the detection range is consistent indoors. Great value for maker projects.
Q: Is the laser safe for children's projects?
A: The module uses a low-power Class 2 laser. While generally safe for brief exposure, users should avoid staring directly into the beam or pointing it at eyes. Adult supervision is recommended for younger students.
Q: What is the maximum detection distance in a dark room?
A: In optimal conditions with low ambient light, the sensor can detect reflective objects up to approximately 2 meters away. However, reliability decreases as distance increases; 1 meter is the recommended operational limit.
Q: Can this sensor detect black lines on a white surface?
A: Yes, this module is commonly used for line-tracking applications. You may need to adjust the onboard potentiometer to fine-tune the sensitivity for specific surface contrasts.
Q: Does this work with 3.3V logic boards like ESP32?
A: Absolutely. The module operates within a 3.3V to 5V range, making it fully compatible with ESP32, ESP8266, and standard 5V Arduino boards without level shifters.
Q: Can I use multiple sensors together without interference?
A: Since this is a non-modulated continuous wave receiver, using multiple units close together may cause cross-interference. For multi-sensor setups, we recommend staggering their activation times in your code or using modulated alternatives.
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