Read and set calibration value about qtr-sensors-arduino HOT 6 CLOSED

see calibrationOn and calibrationOff

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What exactly do you mean? What have you already tried and why did it not work?

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First of all, look at the definition of struct CalibrationData in QTRSensors.h so you know what data that struct contains. Then use the C++ assignment operator (=) to set the values of each member. For examples:

sensors.calibrationOn.initialized = true;
sensors.calibrationOn.minimum = your_array_of_minima;
sensors.calibrationOn.maximum = your_array_of_maxima;

This seems like a general C++ programming question. We use GitHub issues to keep track of bugs and feature requests in the library, so if you need more help the more appropriate place to ask would be:

https://forum.pololu.com

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Note: the destructor of QTRSensors uses free to free those arrays, so you should either allocate your arrays yourself with malloc or by calling QTRSensors::calibrate (and then overwriting the values it stores in the newly-allocated arrays).

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