What it is
The ShillehTek IR Infrared Obstacle Avoidance Sensor Module for Arduino Robot is an active infrared proximity sensor that emits IR light and reads the reflection to detect nearby obstacles—ideal for Arduino smart car chassis, 2WD/4WD robots, and short-range touchless triggers indoors. A built-in potentiometer lets you dial in the detection zone so your rover can stop or turn before hitting walls, furniture, or other robots.
Pins
Refer to the silkscreen labels on the board/module and the listing photos for exact pin names. This type of Arduino robot sensor module commonly provides power pins and a single digital output that changes state when an obstacle is detected.
Technical Specifications
| Item | Details |
|---|---|
| Sensing method | Active IR transmitter/receiver proximity reflection |
| Detection range | Adjustable via onboard potentiometer (typically ~2 cm to 30 cm) |
| Output signal | Digital logic output; described as low-level (0 V) on detection |
| Mounting | Central mounting hole for easy chassis installation |
| Typical applications | Arduino robot obstacle avoidance, short-range indoor automation triggers |
Frequently Asked Questions
How do I connect an IR obstacle avoidance sensor module to an Arduino Uno?
Match the module’s power pins to your Arduino power and connect the module’s digital OUT pin to any Arduino digital input. Use the silkscreen labels on the board and listing photos to confirm the exact pin names before wiring.
What does the output do when the sensor detects an obstacle?
This module is described as providing a low-level logic output (0 V) immediately upon detection. In code, read the digital pin and trigger a stop/turn behavior when the detection state is active.
How do I adjust the detection distance on the ShillehTek IR sensor module?
Turn the onboard potentiometer to tune the sensing range; the listing describes a typical adjustable zone of about 2 cm to 30 cm. Test by moving an object toward the sensor and adjusting until it triggers at your desired distance.
Why does my IR obstacle avoidance sensor work inconsistently on some surfaces?
IR reflection sensors can respond differently depending on how reflective, dark, angled, or textured a surface is. Re-tune the potentiometer for your environment and mount the module facing the direction of travel for best results.