Видео ютуба по тегу Was Not Declared In This Scope Arduino

Variable Scope and fixing error: '_______' was not declared in this scope?

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How to fix the compilation error : ‘ledcSetup’ was not declared in this scope

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Como resolver o erro " 'POSITIVE' was not declared in this scope " na IDE do Arduino - Tutorial 35

Managing Arduino Tabs - Avoiding 'was not declared in this scope'

'input' was not declared in this scope Arduino programming code

exit status 1'SensorPin' was not declared in this scope//How to fix the error while compiling//part4

Arduino: Getting error 'Serial' was not declared in this scope

'analogwrite' was not declared in this scope Arduino programming code Error.

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Arduino Due error: 'analogReadResolution' was not declared in this scope

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Arduino Error: "Type" not declared in this scope

Arduino: Variable was not declared in this scope (2 Solutions!!)