QTRX-HD-31RC - module with 31 reflectance sensor with RC (digital) output

Module with five ITR20001/T reflective sensors. Powered with the voltage from 3.3 V to 5 V, it has analog outputs. It can detect objects at a distance of up to 5 mm. Waveshare Tracker Sensor

Reflective sensor with digital output, enabling obstacle detection, with adjustable trigger threshold using a built-in potentiometer. The module can be connected directly to a microcontroller and development kits such as Arduino, Raspberry Pi, STM32 or ESP32

Reflective Optical Sensor with Transistor Output, Vishay, RoHS

Module with an analog IR reflective sensor. It consists of an IR diode and a phototransistor which measures the intensity of the reflected light. Used, among others in line tracking robots. Cytron MAKER-REFLECT

Module with 7 QTR type optocoupler with analog output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 40 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4247

Module with 16 QTRX type optocoupler with RC (digital) output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 50 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4356

A compact line-tracing board designed for Raspberry Pi Pico, BBC micro:bit, and Arduino projects. Equipped with three phototransistors, it generates an analog output voltage proportional to the substrate\'s color, enabling precise control of autonomous vehicles. The board is solderless and ready to use, with a standard 2.54mm connector for easy integration with prototype breadboards. Kitronik 5337

Matrix module of six reflection sensors for the Zumo robot. The module allows you to easily add line detection or edge detection to the robot. Pololu 1419

Module with 11 QTRX type optocoupler with analog output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 40 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4411

Module with 5 QTRX type optocoupler with RC (digital) output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 40 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4305

Module with 16 QTR type optocoupler with analog output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 50 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4256

Module with 3 QTRX type optocoupler with RC (digital) output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 30 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4343

Infrared sensor module with TCRT5000. Can be used to detect objects in close proximity or detect lines in "Line Follower" robots

Module with 7 QTRX type optocoupler with analog output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 40 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4407

A reflective sensor that precisely measures the intensity of light reflected from a surface using an IR LED and a phototransistor. It offers a long detection range—optimally around 20 mm, and up to 80 mm—thanks to the QTRXL sensor with a built-in lens and adjustable LED brightness. It generates a digital RC signal that\'s easily read by microcontrollers like Arduino or Raspberry Pi. Pololu 4540

Module with 1 optocoupler type QTRXL with RC (digital) output. It is supplied with the voltage from 2.9 to 5.5 V, detects objects at a distance of up to 80 mm. Pololu 4501