4431-POLOLU QTRX-HD-31A Reflectance Sensor Array: 31-Channel, 4mm Pitch, Analog Output, Low Current

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US$46.82
4431-POLOLU
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QTRX-HD-31A Reflectance Sensor Array: 31-Channel, 4mm Pitch, Analog Output, Low Current

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 50 mm. This version features high-performance, low-current QTRX sensors with lenses.

Specifications

  • Dimensions: 125.0 × 16.5 × 3.0 mm (see the dimension diagram (1MB pdf) for more details)
  • Operating voltage: 2.9 V to 5.5 V
  • Sensor type: QTRX
  • Sensor count: 31
  • Sensor pitch: 4 mm
  • Full-brightness LED current: 3.5 mA (independent of supply voltage)
  • Max board current: 68 mA
  • Output format: analog voltages (0 V to VCC)
  • Optimal sensing distance: 10 mm
  • Maximum recommended sensing distance: 50 mm
  • Weight: 8.5 g

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