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We have made a new nice project...object following robot thats based on arduino...
this robot is made by using a ultrasonic sensor....
ultrasonic sensor:-
An Ultrasonic sensor is a device that can measure the distance to an object by using sound waves. It measures distance by sending out a sound wave at a specific frequency and listening for that sound wave to bounce back.
so..this sensor can find object with range and follow or avoid a object and human in specific distance..
