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Move your palm forward and backward and observe the real time distance change through the FPV window.
Notes:
The distance measuring function of the infrared distance sensor is achieved mainly by the Time of Flight (ToF) camera. The
sensor sends out a modulated light pulse (such as infrared beams sent by the infrared distance sensor) which then reflects off the
object. ToF camera measures the distance between the sensor and the measured object by calculating the time (time of flight) the
light pulse takes to reflect off the object.