In the center of the sensor module, you have the main pyroelectric sensor that allows IR rays to pass ... Connect the PIR sensor's VCC (or +) pin to the Arduino's 5V output. Connect the GND (-) pin of ...

If you do not know about LED and ultrasonic sensor (pinout, how it works, how to program ..), learn about them in the following tutorials: -Arduino-LED tutorial ...

the array and the LED, respectively, work as the reference element and the contactless cursor of a biaxial position sensor. By means of a proper method of readout and processing of the pyroelectric ...

Abstract: A sensor is presented to measure translational displacement exploiting the position-dependent signals generated by pyroelectric films when excited by a movable LED that works as a ...