Controlling widgets from device

Need Help With My Project
1

I have a simple led project
i.e. the blynk app has a button which turns the led on/off (toggle)
when the led is on the button is green when it is off the button is black
NOW
I added a physical button to the board (NodeMCU)
I wrote code so that when i press the button the led turns on/off (toggle)
to sum up
i can turn the led via the phone app and via the physical button

what i want is to notify the app when the physical button was pressed so it will change the button’s state

how do i do that?

2

digitalRead and VirtualWrite.

1 Like
3

thank you

4

https://examples.blynk.cc/?board=NodeMCU&shield=ESP8266%20WiFi&example=More%2FSync%2FSyncPhysicalButton

1 Like
5

thank you very much

6

Is there a way to add a button via code, or control visibility (hide/show)?
I am building a multiple device app.
I want to show only devices that are connected and hide the ones that aren’t.
Another option add dynamically buttons on the fly.

7

No but in code you can disable the widgets.

8

You also may consider Device Selector for your use case.