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QTR-1A Reflectance Sensor (2-Pack)
The QTR-1A reflectance sensor carries a single infrared LED and phototransistor pair in an inexpensive, tiny 0.5" x 0.3" module that can be mounted almost anywhere and is great for edge detection and line following. The reflectance measurement is output as an analog voltage. This sensor is sold in packs of two units.
Compare all products in Older QTR Sensors or Single-Channel QTR Reflectance Sensors.
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- How is the Pololu QTR-1A different from Parallax’s QTI sensor?
- The main difference is in the output interface: the Pololu QTR-1A has an analog voltage output that typically requires an analog-to-digital converter (ADC). Our QTR-1RC is much more similar to the Parallax QTI sensor.
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