It’s the same protocol, just without the photons. With a simple web-interface running on the ESP8266, they can control the AVR 2308 from a smartphone’s browser anywhere in the house.

He used a DHT22 library written for the ESP8266 to read data from the sensor, and wrote a CGI script to display the data on a web page. [Martin] also added buttons to control a GPIO pin as a proof ...

For this example during a session of Sunday night hacking an Adafruit ESP8266 Feather HUZZAH is used to control NeoPixels or a relay. In short, no external server, gateway, service, computer ...