Yip, I have a rather complicated example running now where i have multiple ESP’s connected the the application, but also communicating between themselves without needing any input from the application.
I.e. The one ESP has a PIR and via the Blynk bridge sends a digitalwrite to another ESP that triggers a relay to turn on a light.
I’ve been traveling and have not had a chance to take a video, will upload it this weekend.
Have a look at this thread: Why nobody uses bridge?
in the code I’m initializing the multiple devices as follows:
// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "PrimaryAuthCode";
//Auth Tokens for any additional projects that you would like to control
char auth1[] = "SecondaryAuth1";
char auth2[] = "SecondaryAuth2";
char auth3[] = "SecondaryAuth3";
//Bridge Widget on virtual pin 1 (not currently required in the app)
WidgetBridge bridge1(0);
WidgetBridge bridge2(1);
WidgetBridge bridge3(2);