At left is a thermometer that displays the ambient room temperature on its maker’s computer screen. It was built by a friend using an Arduino circuit board. Arduino is an open source hardware control unit. He could plug in a humidity sensor and do a little more programming and his display would show the humidity in the room. He could add an altimeter, or a GPS sensor to display latitude and longitude. He could set up a website to put on view the temperature of the room where he works. He could add an accelerometer to signal earthquake activity (or theft of the device). He could have the unit send him text if the temperature in the room rose above 80 degrees. Etc., etc. By now business people, even those outside of IT, are sort of inured to the idea of ‘open source’ anything. But open source cause marketers still offers cause marketers countless opportunities. Two examples of open source cause marketing leap to mind. General Mills’ Box Tops for Education campaign is an open source cau...
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