YouTube Tutorial -->https://www.youtube.com/watch?v=1X6FeuUiMUY
Alexa skills to control ESP8266 without opening a router's port/firewal.
In This project you will be able to control You TV with Alexa & Google Home.
Download this project and unzip.
Copy following folders to "C:\Program Files (x86)\Arduino\libraries"
Connect, Capture, Update and flash your NodeMcu sketch
Create IFTTT templates and add Heroku app URL as an end-point
Test and enjoy.