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control dc motor using raspberry pi4

Hi

how i can read RPM from LM393 using raspberry pi4 

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@Andy_bk wrote:

Hi

how i can read RPM from LM393 using raspberry pi4 


That is a very good question considering an LM393 is a comparator IC...

 

We are going to need a whole lot more information to give you any meaningful response

 

I am going to guess that said LM393 is putting out one pulse per revolution. The general method of determining RPM is to count pulses during a set time period, basically a frequency counter. 

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Unfortunately, most readers of this Forum, including some real Experts, have not mastered the skill of being able to read the code that Posters fail to post. If we cannot see "what you did wrong", we are unable to tell you how to fix it. (Bob Schor 28 August 2018)
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