I just purchased a Blynk Board, and I have a question regarding virtual pins. The tutorial specifically instructs me to connect the terminal chat to V21, and a Value Display to V25. Connected to the Blynk board is a magnetic door switch set, from 3.3V to pin 16. And as I supposed, everything worked correctly… But I do not know why.
Why does the value display know to say ‘Open’ or ‘Close’? Is that the value that the magnetic switch sends? If so, why is V25 connected to pin 16 for that information to be relayed? Why does the terminal chat need to be connected to V21, and how does that know to print what it does?
I apologize if this is a rather simple concept I am missing, but I appreciate any and all help. Thanks,