2 way lighting circuit control with blynk and feedback updates

[Gunner]

@newdos

how do you install the new 2.4.0-rc2 core ???

But you just said you are using the Arduino Mega?.. so this ESP core will not help you, but here it is.

Releases · esp8266/Arduino

And of course for the Blynk beta lybrary, use this link…

[BETA] Blynk Library v0.5.0

The next Blynk Library release 0.5.0 is available for BETA testing. It includes some major changes in the internal logic, which can improve stability a lot, as well as make it easier to use. From the first glance, it can be hard to spot the difference, but in fact it enables you to run any number of Blynk commands (virtualWrite(), setProperty(), etc.) in a row! Among other changes (we’ll announce the full list with the 0.5.0 release), this also includes: ESP32 Bluetooth LE initial suppor…