Google bought Nest for $3.2 Billion… You can build your own for $70In case you aren’t familiar with the Spark Core, it was a kickstarter project for easily creating internet-connected DIY projects using arduino. Now the team set out to recreate the Nest Thermostat and not only accomplished the feat, but did it in one day for $70.I think I found my next DIY home improvement project. :)[blog.spark.io/2014/01/1…](http://blog.spark.io/2014/01/17/open-source-thermostat/http://click-to-read-mo.re/p/4SMX)