How can I control an LED via the serial monitor? - Programming Questions - Arduino Forum

Hello all, I would like to turn on a LED as soon as a sentence is entered in the Serial Monitor. I already have the first approach, but for now only with one letter. So currently it is so that the LED is turned on as soon as I enter the letter "Y". However, I would like to have it so that the LED is switched on when "Turn on yellow LED" is entered. So a sentence should be entered. How can I do this? Let me show you my first approach. Thanks a lot! const int yellowPin = 8; void setup() { pi

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