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QTRX-MD-08A Reflectance Sensor Array: 8-Channel, 8mm Pitch, Analog Output, Low Current

Pololu item #: 4448 26 in stock
Brand: Pololu
Status: Active and Preferred 
RoHS 3 compliant
 Free add-on shipping in USA 
This item could qualify for free shipping Free shipping in USA over $40 

Price break Unit price (US$)
1 9.43
5 8.68
25 7.98
100 7.34


backorders allowed

pitch × sensors size
(mm)
output max current optimal
range
LED board
8 mm × 8 61.0 × 20.0 analog 3.5 mA 17 mA 10 mm

This array of IR LED/phototransistor pairs is great for precisely identifying changes in reflectance (like line detection). It operates from 2.9 V to 5.5 V and offers dimmable brightness control independent of the supply voltage. In general, the closer the object, the higher the contrast between light and dark readings, but high-reflectance objects are generally detectable out to around 40 mm. This version features high-performance, low-current QTRX sensors with lenses.

Alternatives available with variations in these parameter(s): sensor type sensor count sensor pitch output type Select variant…

 Description Specs (15) Pictures (7) Resources (6) FAQs (0) On the blog (1) 

QTRX-MD-08A Reflectance Sensor Array.

QTRX-MD-08A Reflectance Sensor Array, front and back views.

QTRX-MD-08A Reflectance Sensor Array dimensions.

Pinout diagram of a QTRX-MD-xA Reflectance Sensor Array.

Demo of IR LED dimming and independent even/odd control on the QTRX-HD-07x (as seen through an old digital camera that can see IR).

Schematic diagrams of individual QTR sensor channels for A version (left) and RC version (right). This applies only to the newer QTRs with dimmable emitters.

The QTR Reflectance Sensor Arrays are available in many different sizes.


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