Weekend Projects – Hot/Cold LEDs

[youtube=”http://www.youtube.com/watch?v=Y2yZ2q9G6bc&feature=youtube_gdata”]
Complete instructions for this episode of Weekend Projects can be found at http://makeprojects.com/Project/Hot-Cold-LED/2445/1

Combine an Arduino, an ultransonic distance sensor, and some common components to build a classic “hot/cold” project. Once assembled, we’ll walk through the software “sketch” loaded onto our Arduino, and experiment with three variations of the “hot/cold” theme, all the while using the same circuit.