Help in blynk terminal setup

[PeteKnight]

@gendiaaa

yes please can you help me how to use the BLYNK_WRITE(V1) callback and one of the param.asvariable type commands

Read this:

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…

@gendiaaa

i used terminal.available() and also terminal.print in the .cpp file but its making error

There is no terminal.available, and terminal.print isn’t designed to be used in that way.

Pete.