Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Operating Voltage | 3.3V - 5V DC |
| Detection Range | 2cm - 30cm (Adjustable) |
| Output Signal | Digital Switching Output (0 and 1) |
| Indicator LED | Power and Detection Status LEDs |
| Comparator Chip | LM393 Wide Voltage Comparator |
| Sensitivity Adjustment | Potentiometer for Fine Tuning |
| Mounting Compatibility | Compatible with LEGO Technic Pins |
| PCB Dimensions | 32mm x 14mm x 8mm |
| Application Type | Line Tracking and Obstacle Avoidance |
| Package Contents | 2x Infrared Sensor Modules |
Anonymous
Mar 22, 2026
Rating: 5/5
Great addition to our smart car kit
My son and I used these to upgrade his existing toy car into an autonomous vehicle. The response time is fast enough to stop before hitting walls. The LEDs provide good visual feedback during debugging.
Anonymous
Mar 10, 2026
Rating: 5/5
Perfect for my Arduino car project
These sensors work flawlessly for line tracking. The sensitivity adjustment is very responsive, allowing me to calibrate it perfectly for black tape on a white floor. Great value for a pair.
Anonymous
Mar 08, 2026
Rating: 5/5
LEGO compatible as advertised
I was skeptical about the LEGO compatibility claim, but the mounting holes align perfectly with standard Technic pins. It made building a custom sensor array much faster than designing 3D printed brackets.
Anonymous
Mar 08, 2026
Rating: 4/5
Good for classroom kits
Bought these for our high school robotics club. They are durable and easy to wire up. The only minor issue is that direct sunlight can interfere with the reading, but indoors they are excellent.
Anonymous
Mar 08, 2026
Rating: 3/5
Works well but range is limited
The sensor is reliable for close-range obstacle avoidance, but don't expect it to detect objects further than 25cm reliably. For the price, it's acceptable, just manage your expectations on range.
Anonymous
Mar 05, 2026
Rating: 5/5
Easy to integrate
Very straightforward to connect to an ESP32. The digital output makes coding simple; no need for complex analog reading logic unless you want to measure distance specifically. Highly recommended for beginners.
Q: How do I adjust the detection distance?
A: There is a blue potentiometer on the back of the PCB. Use a small screwdriver to turn it clockwise to increase sensitivity (range) or counter-clockwise to decrease it while testing with your target object.
Q: Is this compatible with Raspberry Pi GPIO?
A: Yes, since the module operates at 3.3V to 5V and provides a digital signal, it is fully compatible with Raspberry Pi GPIO pins. Just ensure you connect the VCC to the 3.3V or 5V pin accordingly.
Q: Can these sensors detect clear glass or transparent obstacles?
A: Infrared reflective sensors generally struggle with transparent objects like glass because the IR light passes through rather than reflecting back. They are best suited for opaque obstacles.
Q: What is the current consumption of each module?
A: Each module typically consumes around 10mA to 20mA when active, depending on the brightness of the IR LED and the state of the indicator LEDs.
Q: Are the pin headers pre-soldered?
A: No, the modules usually come with unsoldered pin headers to allow for flexible wiring options. You will need to solder them yourself or use jumper wires with friction fit if the holes are tight.
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