This is my first contact with NodeMCU and Lua (and this wonderfull forum BTW).
My script allows to trigger a camera with a smartphone (including self-timer and intervalometer).
I tested it with a Canon DSLR, but it should work with any camera with built-in shutter switch terminal.
This is how it looks like on my phone:
The thing:
And the code:
https://github.com/CosmicMac/ESP8266-remote
Any feedback is welcome.
Cheers!