IR Obstacle Avoidance Sensor Module (Infrared Proximity Switch)
Give your robotic projects and automation grids the power of sight with the IR Obstacle Avoidance Sensor Module. Precision-engineered by Muonix, this compact, highly responsive sensor uses infrared light to detect obstacles and surface barriers in real-time without requiring physical contact.
Operating on a simple light reflection principle, the module beams an invisible infrared signal forward. If an object breaks the path, the light bounces back into an onboard receiver, instantly flipping a digital output pin to alert your microcontroller. Manufactured under strict lead-free guidelines, it is the ultimate eco-friendly choice for smart whiteboards, obstacle-avoiding cars, automated factory conveyor counters, and touchless washroom dispensers.
Key Features
Precision Distance Adjustment: Equipped with an onboard multi-turn potentiometer that allows you to finely tune the detection range from 2 cm up to 30 cm to perfectly suit your environment's ambient lighting.
Dual Signal Processing: Powered by the highly stable LM393 comparator microchip, ensuring clean, noise-free digital square waves that eliminate false triggers.
Instant Visual Diagnostics: Features two onboard SMD LEDs—one serving as a dedicated Power Indicator and the other lighting up instantly as an Obstacle Status Indicator whenever an object is detected.
Ambient Light Resistance: Designed with a matched infrared transmitter (Tx) and receiver (Rx) pair that actively Filters out standard room lighting interference for stable indoor operation.
Breadboard & Bracket Friendly: Includes a pre-drilled M3 mounting hole, making it incredibly easy to screw onto robotic chassis panels, custom brackets, or 3D-printed enclosures.
Technical Specifications
Feature | Specification |
Operating Voltage | 3.3V to 5V DC Nominal |
Operating Current | $\ge 20\text{ mA}$ |
Detection Range | 2 cm to 30 cm (Adjustable via Potentiometer) |
Output Signal Type | Digital Output (TTL Low/High Level) |
Active Logic State | Outputs a LOW (0V) signal when an obstacle is detected |
Detection Angle | 35° Cone Angle |
Onboard Chipset | High-Precision LM393 Comparator |
Board Dimensions | 32 mm x 14 mm x 7 mm |
Lead-Free & Soldering Safety
100% Lead-Free PCB: The base circuit board paths are constructed from eco-friendly, lead-free materials, aligning fully with standard global electronic safety and RoHS compliance norms.
Pre-Soldered Header Pins: The interface connection tracks are factory-mounted with standard 0.1-inch (2.54mm) pitch headers using clean, high-grade lead-free solder wire—offering instant, non-toxic hardware testing on standard breadboards.
Superior Joint Durability: The premium lead-free solder tracks resist thermal expansion and joint crystallization under continuous running conditions.
🛡️ Compliance Note: Fully RoHS Compliant & Lead-Free profiling makes this sensor completely safe for educational engineering workshops, university electronics labs, and consumer electronic product manufacturing.
Hardware Wiring & Pin Mapping
The module breaks out a 3-pin header for quick and straightforward plug-and-play wiring:
VCC: Connects to the +3.3V or +5V DC power pin of your microcontroller (Arduino, ESP32, Raspberry Pi).
GND: System Ground Reference.
OUT: Digital Output Pin. Directly connect this pin to any digital input or interrupt pin on your microchip.
State: Stays HIGH (VCC) in free space; drops LOW (0V) immediately when an obstacle reflects the IR beam.
Common Applications
Obstacle Avoiding Robots: Mount multiple sensors on a wheeled robot chassis to allow autonomous navigation, turning away before colliding with walls or table legs.
Conveyor Belt Object Counter: Place the sensor along a production track to count items or components as they pass by and break the beam.
Touchless Sanitizer/Water Dispensers: Act as an invisible proximity trigger to cycle small DC pumps whenever a hand is placed in front of the nozzle.
Smart Door Alarms: Install it inside door frames to trigger localized security alarms or turn on room lights upon opening.
Package Includes:
1 x IR Obstacle Avoidance Sensor Module (Pre-Soldered, Lead-Free)