I can't read the Virtual Pin of LED Widget

[PeteKnight]

@mfatihtuz

I’ve looked some websites to get the idea behind this problem

You’re probably best to start 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…

@mfatihtuz

I’m using 2 ESP-01S modules to turn on/off relay according to DHT1

The ESP-01 isn’t a great choice as ot only has two useable pins and is difficult to work with because of its form factor. Also, communication between two devices needs to be done via the Blynk server using Automations. Each ESP-01 needs to be a separate Blynk device with a unique auth token.

Pete.