Hello everyone, I have been ask to extend a robot project which was previously designed by someone else. I have been following some tutorials on the net, it seems most of people uses digital pins to connect ultrasonic range finders. but, in this robot these sonar sensors are connected to pins 3 and 4 analog Input. I was wondering which one is the best approach and what is the difference.I do appreciate your time answering my questions. Thank you very much
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