Turn an Old Cell Phone Into a Smartwatch with an Arduino - Lifehacker

Lifehacker

Turn an Old Cell Phone Into a Smartwatch with an Arduino Lifehacker Using a Nokia 1100, Tinkernut walks you through pulling apart the old phone, connecting it to the Arduino, and setting up the software required to make this sucker work. By the end of the three-part series, you'll have a bulky, but totally DIY watch ...