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Description。This is the Add-On kit for the SparkFun Digital Sandbox(DS)learning platform. With this add-on you will be able to perform the final three circuit experiments found in the DS Guide book which include making an electric musical instrument

Description。The SparkFun Weather Shield is an easy-to-use Arduino shield that grants you access to barometric pressure， relative humidity， luminosity and temperature. There are also connections on this shield to optional sensors such as wind speed， dir