A simple evening hack to control a relay connected to some Christmas Lights from a Phone browser. The relay is conected to a GPIO of an ESP8266, which hosts a webserver and serves files stored on the SPIFFS file system. The web pages can be updated remotely via the browser (http://ChristmasLight.local/edit).

• USB (phone changer) powered
• SPIFFS filesystem to store webpages
• File uploads to SPIFFS filesystem via browser
• OTA firmware update (using ArduinoOTA)
• mDNS to advertise host name
• Page doesn't scroll around on iOS Safari