Blynk 2.0 Digital pin to Virtual pin

[PeteKnight]

@apo8ira7

i would like to know if this way to add virtual pins in correct

You’re not exactly “adding” the virtual pin, you’re adding a function in your code that will be triggered when the value of the virtual pin changes. The datastreams for those virtual pins still need to be defined in the Blynk 2.0 web dashboard.

There’s more info on virtual pins here…

Using Virtual Pins to control physical devices

I thought I’d write a guide about how to use virtual pins with app widgets such as buttons, to control physical devices such as relays, LEDs etc… Why use virtual pins anyway? I’d always recommend using virtual pins over physical pins when developing your code. There are a number of reasons, but here are what I consider to be the main ones: Virtual pins are hardware independent. This means that it’s far easier to port your code from one hardware platform to another in future (when you realise…

Pete.