TCRT5000 Infrared Reflective Sensor HiLetgo 10pcs Module for Arduino

Description

Product Overview

The HiLetgo TCRT5000 infrared reflective sensor module is engineered for precision distance detection in a compact footprint. Each module measures just 0.55 × 0.55 × 1.26 inches and weighs 1.13 ounces, making it ideal for space‑constrained robotic platforms, line‑following cars, and edge‑detection systems. The sensor combines a high‑sensitivity infrared emitter with a phototransistor, while the integrated LM393 comparator translates the analog light intensity into a clean digital output (0 or 1) that can be read directly by microcontrollers such as Arduino, ESP32, or Raspberry Pi.

Operating voltage ranges from 3.3 V to 5 V, allowing flexible power configurations for battery‑powered or USB‑powered projects. The detection range spans 1 mm to 25 mm, providing reliable response for close‑range obstacles, reflective lines, or surface variations. The module’s pins are clearly labeled for VCC, GND, and OUT, simplifying wiring and reducing setup time for hobbyists and engineers alike.

Manufactured by HiLetgo, a reputable supplier of electronic components, the sensor enjoys a strong track record of quality and consistency. With a customer rating of 4.5 stars from over 50 reviews, users praise its durability, accurate response, and ease of integration. The product is not discontinued and remains a popular choice in the Photoelectric Sensors sub‑category, ranking #20 among its peers.

Technical specifications highlight a response time of less than 200 µs, ensuring rapid detection suitable for high‑speed applications. The LM393 comparator provides hysteresis control, reducing false triggering caused by ambient light fluctuations. The module’s PCB layout incorporates a ground plane and shielding traces that minimize electromagnetic interference, delivering stable performance even in noisy environments.

HiLetgo subjects each sensor to a rigorous batch testing process that includes temperature cycling, vibration resistance, and long‑term reliability checks. The result is a component that meets industrial standards for durability while retaining the affordability required for prototyping and educational use. Detailed datasheets and reference schematics are available on the manufacturer’s website, facilitating rapid development and customization.

Usage

In robotics, the TCRT5000 module serves as the eyes for obstacle‑avoidance algorithms. By mounting the sensor on the front of a mobile robot, the controller can instantly detect an object within the 1‑25 mm range and trigger a turn or stop command, preventing collisions. The same principle applies to autonomous line‑following cars, where the sensor reads the contrast between a dark line and a light background, enabling smooth navigation along predefined tracks.

Beyond mobile platforms, the sensor is valuable in industrial automation for detecting the presence of objects on conveyor belts, monitoring material levels in containers, or verifying the position of moving parts. Its low power consumption and digital output make it compatible with PLCs, custom PCB designs, and wireless sensor networks, expanding its applicability to smart home devices, educational kits, and prototype development.

For Arduino enthusiasts, a typical wiring setup involves connecting VCC to the 5 V pin, GND to ground, and the OUT pin to a digital input. Sample code uses the digitalRead() function to monitor the sensor state and execute conditional logic based on the returned HIGH or LOW value. Libraries such as “IRremote” or “SimpleTimer” can further streamline timing and event handling, allowing developers to focus on higher‑level behavior.

In line‑tracking applications, adjusting the sensor’s mounting height between 2 mm and 5 mm yields optimal contrast detection. Users often pair the TCRT5000 with a pair of motors and a PID controller to achieve smooth, responsive steering. The module’s fast response time enables real‑time adjustments, essential for navigating curves and intersections without overshoot.

Industrial users benefit from the sensor’s ability to operate in harsh conditions. Its plastic housing resists dust ingress, while the LM393 comparator tolerates supply voltage variations, ensuring consistent output even when power quality fluctuates. Integration with SCADA systems is straightforward, as the digital signal can be fed into a digital input module for remote monitoring and alarm generation.

Why Choose Us

Choosing the HiLetgo TCRT5000 module means investing in a component that balances performance, affordability, and reliability. The sensor’s built‑in LM393 comparator eliminates the need for external circuitry, reducing overall system cost and simplifying board layout. Its robust plastic housing protects the delicate infrared elements from dust and minor impacts, extending lifespan in demanding environments.

HiLetgo provides comprehensive technical support, including detailed datasheets, wiring diagrams, and example code for popular development platforms. Customers benefit from a responsive after‑sales service that assists with troubleshooting, firmware integration, and bulk order inquiries. With fast worldwide shipping and a proven track record in the industrial and scientific market, the module is a trustworthy choice for both prototype and production runs.

Quality assurance is a cornerstone of HiLetgo’s manufacturing process. Each batch undergoes statistical process control (SPC) and is inspected for optical alignment, electrical continuity, and mechanical integrity. The company holds ISO‑9001 certification, underscoring its commitment to consistent product standards and continuous improvement.

Beyond the product itself, HiLetgo nurtures an active community of makers and engineers. Online forums, tutorial videos, and open‑source repositories provide practical guidance, code snippets, and project ideas. This ecosystem accelerates development cycles and reduces time‑to‑market for innovative applications ranging from educational robots to commercial automation solutions.

Key Features

• Compact size (0.55 × 0.55 × 1.26 in) fits tight spaces in robots and drones
• Wide operating voltage (3.3 V‑5 V) ensures compatibility with most microcontroller boards
• Digital 0/1 output via LM393 comparator simplifies integration without extra components
• Detection range of 1 mm‑25 mm provides accurate obstacle and line detection for diverse applications
• Dedicated technical support and documentation from HiLetgo for quick project deployment

FAQ

What is the optimal mounting distance for reliable line detection?

The sensor performs best when positioned 2 mm to 5 mm above a high‑contrast line. This distance balances reflected light intensity and ambient interference, delivering a stable digital signal for most Arduino‑based line‑following projects.

Can the module operate with a 3.3 V power supply?

Yes, the TCRT5000 module is designed to work from 3.3 V up to 5 V. At 3.3 V the output threshold shifts slightly, but the LM393 comparator still provides a clean high/low signal suitable for most 3.3 V microcontrollers.

Is the sensor suitable for detecting non‑metallic objects?

Because the sensor relies on reflected infrared light, it can detect any surface that reflects IR, including plastic, wood, paper, and certain fabrics. Dark or matte surfaces may reduce reflectivity, so adjusting the mounting height or adding a small reflector can improve detection.

How many modules can I connect to a single Arduino board?

Each module uses a single digital input pin, so you can connect as many sensors as you have available pins. For larger arrays, consider using a port expander or multiplexing technique to manage multiple inputs efficiently.

What troubleshooting steps should I take if the sensor output is unstable?

First, verify that the power supply is within the 3.3 V‑5 V range and that the ground connections are solid. Next, check for ambient infrared sources such as sunlight or strong LED lighting that may interfere with the sensor. Adding a small resistor (10 kΩ) between VCC and the OUT pin can provide additional hysteresis, reducing noise. Finally, ensure the sensor is clean and free of dust, as contaminants can scatter infrared light and cause erratic readings.

Can I use the TCRT5000 module in a wireless sensor network?

Absolutely. The module’s digital output can be fed into a low‑power microcontroller with a wireless transceiver (e.g., nRF24L01 or ESP‑Now). By transmitting the sensor state over a mesh network, you can monitor multiple points in a factory or building without extensive wiring, enabling scalable and flexible automation solutions.