See Usage Notes for more information and example code. Specifying an emitter pin is optional, and the pin is not present on some QTR sensor boards. If no emitter pins have been specified the default , or if previously specified pins were released with releaseEmitterPins , this function returns 0. This function is intended to detect a black or dark-colored line on a white or light-colored background. Call this function to set up A-type sensors. Which emitters to turn off, as a member of the QTREmitters enum.
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The maximum allowed timeout is Parameters dimmingLevel The dimming level 0 to Returns the odd emitter control pin.
An instance of this class represents a QTR sensor array, consisting of one or more sensors of the same type. The timeout setting only applies to RC sensors.
If the sensors are dimmable and a dimming level is set, this function will apply the dimming level after turning the emitters on. See also setDimmable and setNonDimmable. Specifying an emitter pin is optional, and the pin is not present on some QTR sensor boards. Since read normally turns the emitters on and off automatically for each reading, calling this function yourself will not affect the readings unless the read mode is QTRReadMode:: Specifies that the sensors are non-dimmable.
Definition at line 56 of file QTRSensors.
Library: QTRSensors
If you only calibrate with the emitters on, the calibration arrays that hold the off zensors.h will not be allocated and vice versa. Definition at line 83 of file QTRSensors. Returns True if this object is configured to treat the sensors as dimmable, false otherwise. Returns the emitter control pin.
Sets the number of analog readings to average per analog sensor. Sets the sensor pins.
QTRSensors
Which emitters to turn off, as a member of the QTREmitters enum. Turns on the selected emitters and turns off the other emitters with optimized timing.
Odd qqtr on the odd-numbered emitters while turning off the even-numbered emitters. This function is intended to detect a white or light-colored line on a black or dark-colored background.
Definition at line 95 of file QTRSensors.
Pololu qtr sensors.h
If a valid pin is connected and specified, the emitters will only be turned on during poolu reading; otherwise, the IR emitters will always be on. This function is intended for use when there is a single emitter pin specified; you can use getOddEmitterPin and getEvenEmitterPin instead when two are specified.
Parameters [out] sensorValues A pointer to an array in which to store the calibrated sensor readings. Manual is not sensirs.h. Reads the sensors and provides calibrated values between 0 and Returns the dimming level. If true the defaultthis function delays to give the sensors time to turn off before returning.
Pololu qtr sensors.h download
Call this function to set up RC-type sensors. Call this function to set up first-generation QTR sensors and allow them to be read slightly faster since their emitters can be turned on and off slightly more quickly than those on dimmable sensors. For example, if sensor 4 is your rightmost sensor and you end up completely off the line to the left, this function will continue to return The number of bit analog samples analog-to-digital conversions to average per sensor each time it is read.
Analog sensors will return a raw zensors.h between 0 and like Arduino's analogRead function. To specify a single emitter pin for all sensors, see setEmitterPin.
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