Electronics » Sensors »QTR-1A Reflectance Sensor
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 applications. The reflectance measurement is output as an analog voltage.
Documentation and other informationInformation about using the Pololu QTR-xA and QTR-xRC reflectance sensors, including sample oscilloscope screen captures of sensor outputs. Information about installing and using the C/C++ libraries provided for use with Pololu products. A guide to using the Pololu QTRSensors library with Arduinos and Arduino-compatible devices like the Pololu Orangutan robot controllers. A reference to commands provided in the Pololu C/C++ and Arduino libraries for the AVR. File downloads
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