Each sensor provides a separate digital iomeasurable output. The qtr8rc reflectance sensor array is intended as a line sensor, but it can be used as a generalpurpose proximity or reflectance sensor. Qtr8a reflectance sensor array australia core electronics. It prints the sensor values to the serial monitor as numbers from 0 maximum reflectance to minimum reflectance followed by the estimated location of the line as a number from 0 to 5000. Pololu qtr8a and qtr8rc reflectance sensor array user. The qtr8a reflectance sensor array is intended as a line sensor, but it can be used as a generalpurpose proximity or reflectance sensor.
Qtr8a sensor outputs the qtr8a reflectance sensor array has eight distinct sensor outputs, one from each ledphototransistor pair. How to program a qtr8rc reflectance sensor array youtube. These outputs are analog voltages ranging from 0 v to vcc which must be between 3. Arduino library for the pololu qtr reflectance sensors. The module is a convenient carrier for eight ir emitter and receiver phototransistor pairs evenly spaced at intervals of 0. Pdf arduino library for the pololu qtr reflectance. Purpose of this video is to explain what parts of the code you actually need in order to use the line following sensor, since the majority of the code includes buttons, servos and an ultrasonic. Users guide for the qtr8a reflectance sensor array. Pid based line following robot with pololu qtr 8rcsensor. Pid based line following robot with pololu qtr 8rc sensor array. Pololu qtr reflectance sensor application note printable pdf information about using the pololu qtr reflectance sensors, including differences between atype and rctype sensors and sample oscilloscope screen captures of sensor outputs. Pdf qtr8a and qtr8rc reflectance sensor array users.
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