Built by @tamberg during http://bilbaomakerfaire.com/meet-the-makers-2015/
Video of how it works https://www.flickr.com/photos/tamberg/22978920380
Made from 12 ESP8266. Each slice controls 5 minutes, plus a certain hour.
Slices independently get the time from the Web, then display their part.
Setup is simplified through a D-Link DIR-505 repeater / access point.
Note that ESP is also the ISO three-letter country code for Spain.
Why so many esp's? One esp can control 246 Neopixel Leds.