Hello folks! For my college project I am making a prototype in which I will demonstrate object selection or rejection with the help of Ultrasonic sensor as I am using a conveyor belt so I want to count the objects entering the belt and at the same time leaving the belt, so for that which sensor I should use? A Photo-resistor or an Infrared sensor. Wooden boxes will be used as objects and the selection/rejection criteria will be the size of the object.
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