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The LED current-limiting resistor is set to deliver approximately 17 mA to the LED when VIN is 5 V. The current requirement can be met by some microcontroller I/O lines, allowing the sensor to be powered up and down through an I/O line to conserve power.
This sensor was designed to be used with the board perpendicular to the surface being sensed, and narrow-angle lenses built into the infrared LED and phototransistor packages allow it to be effective to a range of about 1? (25 mm). Because of its small size, multiple units can easily be arranged to fit various applications such as line sensing and proximity/edge detection. The QTR-L-1RC is sold in packs of two units.
Specifications:
Dimensions: 0.3? ? 0.35? ? 0.12? (without optional header pins installed)
Operating voltage: 5.0 V
Supply current: 17 mA
Output format: digital I/O-compatible signal that can be read as a timed high pulse
Optimal sensing distance: 0.125? to 0.25? (3 mm to 6 mm)
Maximum recommended sensing distance: 1? (25 mm)
Weight without header pins: 0.006 oz (0.2 g)
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УЛ1184464:419