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What mode should we put the Arduino pin to, for object detection to work with the IR Sensor?

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What mode should we put the Arduino pin to, for object detection to work with the IR Sensor?

(a) Analog

(b) Digital

(c) PCM

(d) TDM

The question was asked during an online exam.

The query is from IR Sensor in portion Interfacing of Sensors, Actuators, and Other Modules of Arduino

1 Answer

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Best answer
Correct choice is (b) Digital

For explanation: Having the input pin to digital on the Arduino, will give us a HIGH signal from the sensor whenever an object is detected to be in range of the sensor thus fulfilling its need. So, for object detection we can attain the required data simply by a digital HIGH or LOW signal.

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