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IR Reflectance Sensor Board, QRE1113GR, Digital Output

$ 0.79

Availability: 100 in stock
  • All returns accepted: Returns Accepted
  • Return shipping will be paid by: Buyer
  • Condition: New
  • Item must be returned within: 14 Days
  • Refund will be given as: Money Back
  • Brand: Unbranded

    Description

    IR Reflectance Sensor Board, QRE1113GR, Digital Output
    ROB-09454
    This QRE1113 breakout board features a digital output, using a capacitor discharge circuit to measure the amount of reflection. This tiny board is perfect for line sensing when only digital I/O is available.
    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. The output of the phototransistor is tied to a 10nF capacitor. The more reflective the surface is, the faster that capacitor discharges.
    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 capacitor will discharge faster than it would when pointed toward 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 simple
    analog-output version
    of this board.
    IR Sensor Board Features
    5V DC operating voltage
    25mA supply current
    Digital I/O compatible
    No ADC required
    Optimal sensing distance: 0.125" (3mm)