Answered by : colorful-copperhead-89evw2nsg6k6

You declare variables in the scope of setup(), and you try to use them in the scope of loop(), so the compiler tells you that you haven't declared them to be used in the scope of loop() . . .

Source : https://forum.arduino.cc/t/solved-variable-not-declared-in-this-scope-after-declaring-in-setup/471208 | Last Update : Sat, 14 May 22

Answered by : huldar

Is there a syntax error anywhere? A missing '(' og a missing ';'?

Source : https://forum.arduino.cc/t/function-was-not-declared-in-this-scope-solved/637201 | Last Update : Mon, 28 Jun 21