QTR-HD-31RC Reflectance Sensor Array: 31-Channel, 4mm Pitch, RC Output
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 the traditional-style QTR sensors without lenses.
Specifications
- Dimensions: 125.0 × 16.5 × 2.5 mm (see the dimension diagram (1MB pdf) for more details)
- Operating voltage: 2.9 V to 5.5 V
- Sensor type: QTR
- Sensor count: 31
- Sensor pitch: 4 mm
- Full-brightness LED current: 30 mA (independent of supply voltage)
- Max board current: 495 mA
- Output format: digital I/O-compatible signals that can be read in parallel as timed high pulses
- Optimal sensing distance: 5 mm
- Maximum recommended sensing distance: 50 mm
- Weight: 8.5 g
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