Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Sensor Type | TCRT5000 Infrared Reflection |
| Operating Voltage | 3.3V - 5V DC |
| Output Signal | Digital Switching (0 and 1) |
| Detection Distance | 1mm - 25mm (Adjustable) |
| Comparator Chip | LM393 |
| PCB Dimensions | 32mm x 14mm x 8mm |
| Potentiometer | Sensitivity Adjustment Included |
| Indicator LED | Power and Output Status LEDs |
| Mounting Hole Diameter | 3mm |
| Application | Line Following Robots, Obstacle Avoidance |
Anonymous
Mar 27, 2026
Rating: 4/5
Solid performance in ambient light
I was worried about interference from room lighting, but these modules handle normal indoor lighting conditions very well. They do struggle a bit under direct sunlight, but that is expected for IR sensors. Overall very satisfied.
Anonymous
Mar 18, 2026
Rating: 5/5
Fast shipping and works great
Arrived well packaged. The IR emitter and receiver are well aligned. I tested the obstacle avoidance function and it reacts quickly when an object is within 1cm. Highly recommended for small robotics projects.
Anonymous
Mar 09, 2026
Rating: 5/5
Reliable and compact
We bought a bulk pack for our university lab. Students find them very easy to interface with both Raspberry Pi and Arduino boards. The output is clean digital signal which simplifies coding for beginners.
Anonymous
Mar 07, 2026
Rating: 5/5
Easy to use for beginners
This was my first time working with infrared sensors. The three pins (VCC, GND, OUT) make wiring incredibly simple. The onboard LED indicator helps visualize when the sensor is triggered, which is great for debugging.
Anonymous
Mar 07, 2026
Rating: 4/5
Good value but needs careful calibration
Great little module for the price. It took me a few minutes to get the distance right using the screwdriver adjustment, but once set, it detects black tape on white paper perfectly. Just ensure your voltage matches your microcontroller.
Anonymous
Mar 06, 2026
Rating: 5/5
Perfect for my Arduino line follower
These sensors work exactly as described. The sensitivity potentiometer makes it very easy to calibrate for different floor surfaces. I used four of them on my latest robot project and the line tracking is smooth and responsive.
Q: What is the maximum sampling rate for line tracking?
A: The LM393 comparator provides a very fast response time, typically in the microsecond range. The actual sampling rate will depend on your microcontroller's code efficiency, but the sensor itself is not a bottleneck for standard line-following speeds.
Q: Is this compatible with 3.3V logic systems like ESP32?
A: Yes, the module operates on a voltage range of 3.3V to 5V. The digital output is compatible with 3.3V logic levels, making it safe to connect directly to ESP32 or similar boards.
Q: Can this sensor detect clear glass obstacles?
A: Infrared sensors like the TCRT5000 rely on light reflection. Clear glass may allow IR light to pass through rather than reflecting it, so detection can be unreliable depending on the angle and thickness of the glass.
Q: How do I adjust the detection distance?
A: There is a blue potentiometer on the back of the PCB. Use a small Phillips head screwdriver to turn it clockwise to decrease sensitivity (shorter distance) or counter-clockwise to increase sensitivity (longer distance). Test with a target object while adjusting.
Q: Does the package include mounting screws?
A: No, the package includes only the sensor modules. Mounting screws are not included, but the standard 3mm hole size fits most common M3 screws available at hardware stores.
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