QTR-HD-31A Reflectance Sensor Array: 31-Channel, 4mm Pitch, Analog Output
Pololu item #: 4231
Brand: Pololu supply outlook
Status: Active and Preferred 
RoHS 3 compliant
Price break Unit price (US$)
1 27.82
5 25.59
25 23.55

backorders allowed

pitch × sensors size
(mm)		 output max current optimal
range
LED board
4 mm × 31 125.0 × 16.5 analog 30 mA 495 mA 5 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 and separate controls for the odd and even emitters. 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 50 mm. This version features the traditional-style QTR sensors without lenses.

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

Compare all products in High-Density (HD) QTR Arrays.

 Description Specs (15) Pictures (7) Resources (6) FAQs (0) On the blog (1) Distributors (3) 

The following is a list of official distributors who have purchased this product in the last year. You can also order directly from this website (we ship worldwide) or visit our full list of distributors.

Colombia

Poland

Turkey

Related Categories

High-Density (HD) QTR Arrays
Medium-Density (MD) QTR Arrays
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