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  • Actually, that's not quite the problem. They want to do nothing but drive the motor for several minutes. The problem is that while they are adjusting the pot (or before they get a chance to) it takes off on an undesired reading. It's possible the task could be re-organized to drive the motor for some period of time, and then read the analog input to decide if driving should continue - and that might be smarter, but it's not the goal that was stated. Commented Mar 29, 2018 at 15:38
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    @ChrisStratton For something like this there are many many ways of achieving the same thing. None are wrong. Either way, the underlying methodology of their existing program prevents any proper control and they need to re-think how to better do what they want. Commented Mar 29, 2018 at 15:45
  • @Majenko Thank you for clearing my misunderstanding about the delay() and analogRead(). I just find out a better way for my logic. Commented Apr 2, 2018 at 12:24