acs712_30A was not declared in this scope error

veeresh's picture

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Joined: Jun 07, 2020

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acs712_30A was not declared in this scope error
June 7, 2020 - 11:48am

igot error for the  project " IoT Based Electricity Energy Meter using ESP12 and Arduino" i am doing this project but i got the program executed  for node mcu but i get the error 'acs712_30A was not declared in this scope' for the arduino part . please help me where i went wrong.

Debasis Parida's picture

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Joined: Aug 22, 2019

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Hi, it seems the ACS712 sensor library was not installed correctly, so pls check that and if still problem persists, then paste the complete error you are getting.

Sourav Gupta's picture

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Joined: Feb 12, 2018

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Is #include "ACS712.h" declared?

 

Debashis Das's picture

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Joined: Dec 02, 2019

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The problems with the header file. if you have included the library with the Add .ZIP Library.. method, then you have to do #include <ACS712.h>  not #include "ACS712.h".

 

If you do #include "ACS712.h" the preprocessor is searching the library in the project directory, not in the predetermined directory.