Mayhew Labs' Mux Shield is another of these extremely useful Arduino extension shields. If you have ever worried about not having enough analog inputs (for example for larger sensor-based installations), Mux Shield is exactly for you. It features three multiplexers and allows you to connect 48 analog/digital inputs or digital outputs in many combinations.
Mayhew Labs also joined the disaster relief effort for Japan and is generously donating 50% of profits from each purchase to help people who were adversely effected by the Tohoku earthquake, tsunami and Fukushima nuclear accident.
Now available on InMojo: Mayhew Labs' Mux Shield
InMojo supports the Open Source Hardware Definition v1.0