4-Channel Infrared Detector Module for Line Tracking and Obstacle Avoidance

4-Channel Infrared Detector Module for Line Tracking and Obstacle Avoidance
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  • Product Code:SQ1139
  • Availability: 1000
  • $0.85
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Tags: channel infrared detector, IR line tracking module, obstacle avoidance sensor, LM393 IR module, TTL infrared sensor, Arduino line follower, 4-channel IR sensor, adjustable IR detector, robot tracking sensor, Infrared Detector Module

The 4CH-INFRARED-DETECTOR-SQ1 is a four-channel infrared reflective sensor module designed for line tracking and obstacle avoidance in robotic and automation projects. The module combines four independent infrared emitter–receiver pairs with an LM393 voltage comparator circuit, converting reflected IR light into clean, digital TTL-level outputs that can be read directly by an Arduino, ESP32, STM32, or any microcontroller with digital inputs. Each channel operates independently, allowing the module to detect edges, obstacles, or contrasting surfaces across four sensing points simultaneously.

The module is built on a main board measuring 44mm × 40mm × 12mm, with each individual sensor head measuring 25mm × 12mm × 12mm. Each channel has its own onboard potentiometer, enabling individual adjustment of detection sensitivity and threshold. Detection distance is adjustable from 1mm to 60cm, with the most stable performance at shorter ranges; white surfaces reflect the farthest, while darker surfaces reduce the effective range. The detection angle is specified at 35 degrees, giving each sensor a focused forward field of view suitable for line following and directed obstacle sensing.

The 4-channel infrared detector module operates from a 3.3V to 5V DC supply and provides a 6-wire output interface carrying the TTL-level channel signals. Output behavior is active-low: when an object enters the detection range, the corresponding channel output goes low (TTL 0) and its indicator LED lights up; when the path is clear, the output remains high (TTL 1). The operating temperature range is -10°C to +50°C, and the board includes 3mm mounting holes for secure installation on robot chassis and brackets. Typical applications include line-following robots, smart car obstacle avoidance, assembly line counting, edge detection, and black/white line tracking.

4-channel infrared detector module Application

  1. Line-following robots and smart cars
  2. Obstacle avoidance in mobile robots
  3. Black/white line tracking and edge detection
  4. Assembly line counting and production monitoring
  5. Cliff and drop-off detection for robotic platforms
  6. Omni-directional object sensing in automation
  7. Arduino and microcontroller robotics projects
  8. Presence detection in security and automation systems

4-channel infrared detector module Specifications

  1. Product Model: 4CH-INFRARED-DETECTOR-SQ1
  2. Module Type: 4-channel infrared reflective sensor module
  3. Comparator IC: LM393 (per module class)
  4. Number of Channels: 4 independent IR channels
  5. Supply Voltage: 3.3V to 5V DC
  6. Output Signal: TTL digital (active-low: LOW when object detected)
  7. Output Interface: 6-wire connector
  8. Detection Range: 1mm to 60cm (adjustable)
  9. Detection Angle: 35°
  10. Sensitivity Adjustment: Individual potentiometer per channel
  11. Indicator: LED per channel (lights on detection)
  12. Main Board Dimensions: 44mm × 40mm × 12mm
  13. Sensor Head Dimensions: 25mm × 12mm × 12mm (per sensor)
  14. Mounting Hole Diameter: 3mm
  15. Operating Temperature: -10°C to +50°C
  16. Logic Thresholds (per reference class): LOW < 0.8V, HIGH > 2.0V
  17. Output Current per Channel (per reference class): 10mA typical, 20mA max

Features

  1. Four independent IR emitter–receiver pairs on a single main board
  2. LM393 comparator circuit for stable and accurate digital detection
  3. TTL-level active-low outputs compatible with 3.3V and 5V microcontrollers
  4. Individual potentiometer on each channel for adjustable sensitivity
  5. Detection range adjustable from 1mm to 60cm
  6. 35-degree detection angle for focused sensing
  7. Per-channel indicator LEDs for visual detection feedback
  8. 6-wire output interface for straightforward wiring
  9. 3mm mounting holes for robot chassis and bracket installation
  10. Wide 3.3V to 5V supply compatibility
  11. Operating temperature range of -10°C to +50°C
  12. Suitable for line tracking, obstacle avoidance, and edge detection
Electrical Parameters
Voltage DC 3.3-5V
Physical Parameters
Size Control board : 42mm x 38mm x 12mm & Searching unit : 25mm x 12mm x 12mm

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