Month: December 2010

Snail mail push alerts

Getting iPhone push notifications from objects in your physical world is possible using an Arduino with an Ethernet Shield, a PHP-enabled web server and an iPhone app called Prowl. In this video, I show how to set up a mailbox so that it pings your phone when snail mail is delivered, but it’s very easy […]

How a quartz watch works

This is great explanation of how the piezoelectric effect of quartz is used to keep accurate time. via Reddit The amazing everyday wristwatch: We never think about it, but only because engineers have made it so reliable and durable that we don’t need to. At its heart lies a tiny tuning fork made of the […]