This is a functional button from portal! Mine is set to just light up a bit, but it would be simple to have some wires trailing out attached to an Arduino to wreak all kinds of havoc (opening doors, etc.). Fairly easy to make, and no dual extruder needed. This is functional, so it presses and spring...By: Zulubo
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from Instructables: exploring - technology - robots http://ift.tt/1tI8ZaW
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