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QTR-8RC Line Following Reflectance IR Sensor Array


Product Details

  • Product: Reflectance sensor array or IR sensor array
  • Module: QTR-8RC
  • Dimension: 74.93mm x 12.7mm x 3.175mm
  • Colour: red
  • No of IR pair: 8
  • Package contains: 1 x QTR-8RC reflectance sensor array module 


Additional Info
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  • Prices shown are inclusive of GST.
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  • QTR-8RC is a reflectance sensor array but intended as a line sensor. It can be used as a general-purpose proximity IR or reflectance sensor. The device has 8 pairs of IR LED and Phototransistor mounted on a 9.525 mm pitch. 

    Each phototransistor in the module is followed by a pull-up resistor that forms a voltage divider and produces an analog voltage output between 0 to 5V as the function of the reflectance sensor. All the outputs are independent but LEDs are paired to halve the current consumption. The LEDs are controlled by MOSFET with a gate normally pulled high that allows LEDs to turn off by setting the MOSFET gate at low voltage. 


    • No analog to digital conversion requires
    • Improved sensitivity over voltage-divider analog output
    • Parallel reading of multiple sensors is possible


    • Operating voltage: 3.3 to 5V
    • Current supply: 100mA
    • Output voltage range: 0V to supplied voltage
    • Output format: 8 digital I/O compatible signal
    • Sensing distance: 3mm
    • Maximum sensing distance: 9.5mm


    QT8R IR Array Sensor Pinout


    • Line following robot
    • DIY electronics and robotics projects


    SKU: DSM095 Categories: , ,

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