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Add Infrared Detection to Your Next Project

The TCRT5000 Infrared Reflectance Obstacle Avoidance Module is an infrared proximity sensor with digital output designed for presence sensing, short-range detection, and touchless automation. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.

Key details include The output format: digital switching output (0 and 1); Small plates PCB size: 3.2cm x 1.4cm.

Important: Infrared and optical readings change with target color, surface finish, distance, and strong ambient light. Test with your real target before final mounting.

Why you’ll love it

  • Key feature: With multi-turn precision potentiometer adjustable sensitivity adjustment
  • The working voltage of 3.3V-5V: The working voltage of 3.3V-5V
  • Using a wide voltage LM393 comparator: Using a wide voltage LM393 comparator
  • Controller output: digital switching output (0 and 1)
  • Compact size: 3.2cm x 1.4cm
  • Useful spec: 1mm ~ 25mm applicable

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What you can build

This sensor is a good fit for touchless dispensers, object counters, door triggers, small robots, and presence alarms.

Starter bundles

Pair it with an Arduino-compatible board, ESP32, or Raspberry Pi, plus a breadboard and jumper wires for quick setup and testing.

Recommended add-ons

Useful add-ons include a microcontroller board, jumper wires, and pull-up or pull-down support when needed, depending on how you plan to power, mount, and log the sensor.

Technical specifications

Product TCRT5000 Infrared Reflectance Obstacle Avoidance Module
The output format digital switching output (0 and 1)
Small plates PCB size 3.2cm x 1.4cm
Detecting the reflected distance 1mm ~ 25mm applicable
Category proximity presence sensors

Wiring & usage notes

Connect power and ground, then wire the output pin to a digital GPIO input. Check whether the module uses active-high or active-low logic in your code. Infrared and optical readings change with target color, surface finish, distance, and strong ambient light. Test with your real target before final mounting.

What’s in the box

1 × TCRT5000 Infrared Reflectance Obstacle Avoidance Module

Frequently Asked Questions

What does the TCRT5000 Infrared Reflectance Obstacle Avoidance Module measure? It is designed to measure light, reflection, or beam interruption.
Can I use it with Arduino, ESP32, or Raspberry Pi? Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.
How do I connect this Digital GPIO sensor? This sensor provides a digital switching-style signal that is easy to read from a GPIO pin.
Does it need calibration? Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.
Is it good for prototyping? Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.

Build with this board

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Notes from the bench

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