ArduSensors are open source plug-in-play sensors for Arduino.  These were originally made for beginners to get started with Arduino, a very cool electronics prototyping platform, but anyone can use them.  I still play around with them all of the time, and I bet a ton of people that are experienced with electronics still love them.  That's why ArduSensors fit the whole crowd.  ArduSensors fit directly into t ...