Sensors » Pololu QTR Reflectance Sensors » High-Density (HD) QTR Arrays »
QTR-HD-03A Reflectance Sensor Array: 3-Channel, 4mm Pitch, Analog Output
| pitch × sensors | size (mm) |
output | max current | optimal range |
|
|---|---|---|---|---|---|
| LED | board | ||||
| 4 mm × 3 | 13.0 × 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 30 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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