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ID: 1203003
zł14.55
Tax included

zł11.83 tax excl.

Single-channel reflectance sensor from the QTR-MD series, 8 mm wide, featuring an RC output and a side-entry connector. Designed for line detection, surface contrast measurement, and edge detection in mobile robotics and automation systems. Pololu 4140

6 weeks
Awaiting delivery
Kamami is the official distributor of electronic modules and Pololu robotic parts. All products of this brand in our offer are original and come directly from the manufacturer.

Description

The Pololu 4140 QTR-MD-01RC-S module uses a 940 nm IR emitter and a phototransistor to measure reflected light from a surface. The RC output allows measurement via a microcontroller’s digital I/O pin – the discharge time depends on the reflectance level. Lighter surfaces result in shorter pulse times, while darker surfaces produce longer discharge times.

The maximum sensing range is 30 mm, with an optimal working distance of approximately 5 mm, enabling stable and repeatable performance in line-following applications. The 2.9–5.5 V supply voltage range ensures compatibility with common 3.3 V and 5 V microcontrollers.

The IR LED current can be dynamically adjusted across 32 dimming levels, allowing adaptation to ambient lighting conditions and reduced power consumption. Maximum current draw at full LED brightness reaches 32 mA.

Compact dimensions and a 4-pin JST SH side-entry connector simplify integration into small mobile platforms and support convenient cable routing parallel to the PCB.

                                                                         p1203003-127632.jpg

Features

  • Dimensions: 8.1 × 15.2 × 5.5 mm
  • Weight: 0.4 g
  • Sensor type: QTR
  • Number of channels: 1
  • Output type: RC (measurable via digital I/O)
  • Maximum range: 30 mm
  • Optimal range: 5 mm
  • Operating voltage range: 2.9–5.5 V
  • Connector: side-entry, 4-pin JST SH
  • IR LED current: 30 mA (adjustable, 32 levels)
  • Peak wavelength: 940 nm
  • Maximum current draw: 32 mA (at maximum LED brightness)
  • PCB dev code: irs21c3
  • Other PCB marking: 0J158523
1203003

Data sheet

Type of sensor
QTRX
Output type
digital
Number of sensors
1
Power supply voltage
2,9 - 5,5 V

Manufacturer BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20

Responsible person BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20

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