QTR-MD-04A Reflectance Sensor Array: 4-Channel, 8mm Pitch, Analog Output

Pololu item #: 4244
Brand: Pololu supply outlook
Status: Active and Preferred 
RoHS 3 compliant

Price break Unit price (US$)
1 4.22
5 3.88
25 3.57


backorders allowed

pitch × sensors size
(mm)
output max current optimal
range
LED board
8 mm × 4 29.0 × 20.0 analog 30 mA 62 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. 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 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…

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