14-year-old Sebastian Alegri wasn’t injured in the 8.8 magnitude earthquake which shook his home country of Chile and claimed over 500 lives in 2010, but he was shaken up enough to decide they needed a better warning system.
After the tsunami in Japan earlier this year, Alegri heard about Japan’s earthquake warning system and wondered if there was an affordable version he could use. He modified a $75 Quake Alarm by replacing an internal circuit with an Arduino board to interpret its readings and connected the setup to his server. 5 to 30 seconds before a perceptible earthquake, it automatically tweets a warning to his @AlarmaSismos account
TheNextWeb : http://thenextweb.com/la/2011/07/18/meet-the-chilean-teen-who-warns-of-earthquakes-on-twitter