SparkFun Line Sensor Breakout - QRE1113 (Digital)

Item number 59022 Brand Sparkfun Model ROB-09454 Share Write a review
SparkFun Line Sensor Breakout - QRE1113 (Digital)



Description Attachments

The SparkFun Line Sensor Breakout - QRE1113 (Digital) is a compact and versatile device that features a digital output. It uses a capacitor discharge circuit to measure the amount of reflection. This sensor is ideal for line sensing applications where only digital I/O is available. It is compatible with both 3.3V and 5V systems.

The QRE1113 IR reflectance sensor on the board consists of two components - an IR emitting LED and an IR sensitive phototransistor. When power is applied to the VCC and GND pins, the IR LED within the sensor lights up. A 100Ω resistor is included on the board and is placed in series with the LED to limit current. The phototransistor's output is connected to a 10nF capacitor. The quicker this capacitor discharges, the more reflective the surface is.

These sensors are commonly used in line-following robots. Since white surfaces reflect more light than black ones, the capacitor will discharge more quickly when directed at a white surface than at a black one. This makes it possible to differentiate between different surface colors and patterns.

The power input and output pins are conveniently brought out to a 3-pin, 2.54mm pitch header. For easy attachment, the board includes a single mounting hole. A compact size of 7.62mm x 13.97mm makes it easy to integrate into various projects.

SparkFun also offers an analog version of this board for applications that require analog I/O.

Key Features:

  • Operates at 5VDC
  • Requires a supply current of 25mA
  • Compatible with digital I/O
  • No need for an ADC
  • Optimal sensing distance of 3mm

Relevant Documents:

  • Schematic
  • Eagle Files
  • Datasheet (QRE1113)
  • GitHub

Properties

Brand information
Brand Sparkfun
ModelROB-09454
More infoGitHub - sparkfun/QRE1113_Line_Sensor_Breakout-Digital at V_1.1
Size info
Length18 mm
Width30 mm
Height4 mm
Weight1,4 g
Sparkfun
€ 5,35€ 4,45 Excl. VAT (NL)
Expected delivery date: Tuesday 17 December. ... pieces in stock Almost sold out
Show volume discounts Shipped from € 3,50 (NL) 30 days cooling-off Excellent service

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