Name: IR Infrared Obstacle Avoidance Sensor Module for Arduino Smart Car - UNIVERSAL CIRCUIT SYSTEM
SKU: UCS-0178
Price: 30.00 BDT
Availability: InStock

Product Overview

The IR Infrared Obstacle Avoidance Sensor Module is an essential, highly adaptable proximity-sensing device engineered for robotics, automation, and intelligent obstacle detection. Operating over a wide 3.3V to 5V DC power envelope, this compact module utilizes photoelectric reflection technology to scan its immediate path. It serves as a reliable electronic sensory node for microcontrollers (such as Arduino, Raspberry Pi, and ESP32), allowing automated hardware to perceive close-range objects and steer clear of oncoming collisions.

Advanced Optical Hardware & Signal Processing

The module achieves its contact-free detection capabilities through a tightly integrated dual-component layout:

The Infrared Emitter (Clear LED): This diode continuously radiates high-frequency infrared light waves into the surrounding environment. This spectrum of light remains completely invisible to the human eye.
The Photodiode Receiver (Black LED): The black casing acts as a physical filter to reject ambient daylight interference, focusing exclusively on bouncing infrared light. When the emitted beam encounters a physical surface or barrier, the light reflects backward and hits this photodiode sensor.
Onboard LM393 Voltage Comparator: To eliminate processing delays and erratic signal flutter, the analog voltage shift from the photodiode passes directly through a precision LM393 comparator integrated circuit (IC). This chip processes raw optical curves into a crisp, noise-free digital square wave that microcontrollers can parse instantly.

Tuning Ergonomics & Hardware Diagnostics

Precision Multi-Turn Potentiometer: The prominent blue trimmer screw provides immediate manual sensitivity adjustments. Rotating the potentiometer clockwise expands the detection envelope, while a counter-clockwise adjustment constricts it, giving you a functional working range of roughly 2 cm to 30 cm.
Dual Status LED Diagnostics: The module features two distinct surface-mount LEDs to streamline configuration:
- Power LED: Illuminates continuously when the module receives proper voltage across its input rails.
- Output/Signal LED: Instantly triggers when an obstacle enters the targeted threshold, giving visual confirmation that an active object is within range.

Clean 3-Pin Interface Pinout

The board terminates in a standardized 3-pin male header layout, allowing solderless breadboard deployment or quick-disconnect ribbon wire integration:

VCC: Main positive power line input (3.3V to 5V DC).
GND: System common ground connection pad.
OUT (Digital Output): Digital communication lane. It operates on an Active-Low logic matrix; the pin outputs a High (1) signal when the path is completely clear, and snaps to a Low (0) state the moment an obstacle crosses into its range.

Common Engineering Applications

Smart Robot Cars: Providing essential front and side obstacle awareness to prevent self-guided rovers from colliding with furniture or walls.
Line-Following Matrix Arrays: Utilizing multiple modules arranged facing the ground to distinguish between highly reflective white floors and dark black track lines.
Conveyor Product Counters: Positioning the sensor alongside a manufacturing lane to log a count increment each time a product crosses the beam path.
Touchless Sanitary Switches: Creating non-contact trigger mechanisms for automated dispensers, trash bins, or automatic smart mirrors.