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) |
| Comparator Chip | LM393 |
| PCB Dimensions | 32mm x 14mm |
| Mounting Hole Diameter | 3mm |
| Indicator LEDs | Power LED and Output Status LED |
| Potentiometer | Multi-turn Sensitivity Adjustment |
| Compatible Platforms | Arduino, Raspberry Pi, STM32, ESP32 |
| Application | Line Tracking, Obstacle Avoidance, Counting |
Anonymous
Mar 25, 2026
Rating: 5/5
Great for learning embedded systems
As someone new to electronics, this module made it easy to understand digital inputs. The onboard LEDs give immediate visual feedback which helps a lot during debugging.
Anonymous
Mar 20, 2026
Rating: 4/5
Good quality, easy to wire
Very straightforward to connect to my microcontroller. The output is clean and responsive. I deducted one star because the included pins were slightly bent, but nothing a quick fix couldn't solve.
Anonymous
Mar 20, 2026
Rating: 5/5
Excellent obstacle avoidance performance
I was worried about sunlight interference, but these hold up well indoors and even in shaded outdoor areas. The detection range is consistent once calibrated.
Anonymous
Mar 20, 2026
Rating: 5/5
Bought 20 for our school club
We used these for a student competition. Every single module worked out of the box. They are robust enough to handle being mounted and remounted by beginners repeatedly.
Anonymous
Mar 14, 2026
Rating: 5/5
Perfect for my Arduino robot car
These sensors work flawlessly for line tracking. The sensitivity adjustment is very precise, allowing me to tune it perfectly for black tape on a white floor. Great value for the price.
Anonymous
Mar 06, 2026
Rating: 4/5
Solid basic sensor
Does exactly what it says on the tin. It's a standard reflective IR pair. Don't expect long-range detection, but for close-proximity tasks like line following, it is ideal.
Q: Can I use this underwater?
A: No, this module is not waterproof. The electronic components and open PCB design will be damaged by water. It is designed for dry, indoor, or protected outdoor use only.
Q: What is the maximum current draw for this module?
A: The typical current consumption is around 20mA when the IR LED is active. Please ensure your microcontroller pin or power source can supply at least 30mA to be safe.
Q: Can this sensor detect clear glass objects?
A: Infrared reflective sensors generally struggle with transparent materials like clear glass because the IR light passes through rather than reflecting back. It works best on opaque surfaces.
Q: How do I adjust the detection distance?
A: There is a blue potentiometer on the board. Use a small screwdriver to turn it clockwise to increase sensitivity (longer range) or counter-clockwise to decrease it. Test while moving an object toward the sensor.
Q: Is the output compatible with 3.3V logic boards like ESP32?
A: Yes, the module operates between 3.3V and 5V. The digital output is compatible with 3.3V logic levels, so you can connect it directly to an ESP32 or Raspberry Pi GPIO.
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