How-To Geek on MSN

3 smart home upgrades you can make with a $24 Arduino board

3 DIY projects you can do to create a smart home with an Arduino board.
The New York Times

The Best Home Security System

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Rachel Cericola Rachel Cericola is a writer covering smart home. In addition ...