Pololu QTRX-HD-31A Reflectance Sensor Array: 31-Channel, 4mm Pitch, an (Item 4431)
Product Features:
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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…
Price as on: 2019-10-06 15:00:16