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QTR-8A 8 Reflectance Sensor Board

Product Code
:
18116
Brand / Origin
:
Robotistan
Quantity
:
0
Without Vat
:
49.05 TL
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  • The QTR-8A reflectance sensor array is intended as a line sensor, but it can be used as a general-purpose proximity or reflectance sensor. The module is a convenient carrier for eight IR emitter and receiver (phototransistor) pairs evenly spaced at intervals of 0.375" (9.525 mm). Each phototransistor is connected to a pull-up resistor to form a voltage divider that produces an analog voltage output between 0 V and VIN (which is typically 5 V) as a function of the reflected IR. Lower output voltage is an indication of greater reflection.

    The LED current-limiting resistors for 5 V operation are arranged in two stages; this allows a simple bypass of one stage to enable operation at 3.3 V. The LED current is approximately 20-25 mA, making the total board consumption just under 100 mA.

    Technicial Specifications:

    • Operating Voltage: 3.3 - 5V
    • Operating Current: 100mA
    • Output format: 8 analog signal voltage
    • Output voltage range: 0 V-Supply Voltage Value
    • Ideal sensing distance: 3 mm
    • Maximum sensing distance: 6 mm
    • Dimensions: 67mm x 17mm x 4mm

    Documents:

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