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QTRX-MD-04A Reflectance Sensor Array: 4-Channel, 8mm Pitch, Analog Output, Low Current
| pitch × sensors | size (mm) |
output | max current | optimal range |
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|---|---|---|---|---|---|
| LED | board | ||||
| 8 mm × 4 | 29.0 × 20.0 | analog | 3.5 mA | 9 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) |
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QTRX-MD-04A Reflectance Sensor Array. |
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QTRX-MD-04A Reflectance Sensor Array, front and back views. |
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QTRX-MD-04A Reflectance Sensor Array dimensions. |
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Pinout diagram of a QTRX-MD-xA Reflectance Sensor Array. |
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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). |
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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. |
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The QTR Reflectance Sensor Arrays are available in many different sizes. |
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