Send value to hardware from app based on an "if...then...else" condition

[PeteKnight]

@sjgc

I guess you are referring tot he terminal widget

TBH, the Terminal widget would be my last choice. If it’s a number that you want to input then the Numeric Input or Step H/V widgets would be a far better choice.

Do you understand how to obtain the value from widgets attached to virtual pins, when that value changes?
It’s done using the BLYNK_WRITE(vPin) command, more info about working with 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.