Sync button in app with relay status

[Gunner]

FYI, my new, and overkill , example of App and Physical Button Syncing

C++ Blynk (Legacy) - Code Examples for Basic Tasks

#29 - (Triple ) Synced Virtual and Physical Buttons using ESP32 hardware Interrupts It has been awhile since I added to this topic… but here is my take on a common (at time of this posting) issue… synchronising Virtual and Physical buttons. I chose to make this example work with or without Server connection, and the Physical GPIO states take priority on the reconnection (EG The App is set based on the hardware). I also used three separate Virtual/Physical switch sets, just …

Now I can hook up three coffee makers for maximum burnage