How To Use ESP NOW For Two Way Communication

Our next experiment we will put the ESP32 in a 2-way Broadcast mode. You’ll need at least two ESP32 boards to do this experiment, but it is more fun if you have three or more!
We will have an LED and pushbutton attached to each of our ESP 32 boards.
All the LEDs will remain in the same state on every board. So if one is on, they are all on. The pushbuttons can toggle the LED states, any pushbutton will affect all the LEDs.
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[@khanhthinh353]

Sorry can i use this for dev kit esp32 ?
I am beginer of this

[@buddhimaamarasinghe9997]

Super explanation, If possible, put a link of these codes below, Thanks.

[@LetsCodeForTheOlderFolks-dt2vx]

Thanks for the comment. I think it is better to code yourself so you learn.

[@joergfoerster8043]

I would like to extend your code.