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IR Reflectance Sensor Board, QRE1113GR, Analog Output US$2.95

ROB-09453
IR Reflectance Sensor Board, QRE1113GR, Analog Output


This QRE1113 breakout board features an easy-to-use analog output, which will vary depending on the amount of IR light reflected back to the sensor. This tiny board is perfect for line-sensing applications and can be used in both 3.3V and 5V systems.

The board's QRE1113 IR reflectance sensor is comprised of two parts: an IR-emitting LED and an IR-sensitive phototransistor. When you apply power to the VCC and GND pins, the IR LED inside the sensor will illuminate. A 100Ω resistor is on board and placed in series with the LED to limit current. A 10kΩ resistor pulls the output pin high, but when the light from the LED is reflected back onto the phototransistor, the output will begin to go lower. The more IR light sensed by the phototransistor, the lower the output voltage of the breakout board.

These sensors are used widely in line-following robots. White surfaces reflect much more light than black, so, when directed toward a white surface, the voltage output will be lower than when at a black surface.

The power input and analog output pins are brought out to a 3-pin, 0.1"-pitch header. The board also has a single mounting hole.

The board measures 0.30 0.55 inches (7.62 13.97 mm).

There also is a digital-output version of this board which can be used to get an analog light reading delivered to a digital input on your MCU.

IR Sensor Board Resources


Optional Recommended Products for this Item
Rectangular Pin Header, Male, 1x40 Single Row, 2.54mm Spacing+ US$0.75
Pack of 12 Prototyping Wires for 0.025-inch Square Pins+ US$6.90

This product was added to our catalog on Tuesday 20 December, 2011.

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