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SparkFun will be closed May 25, 2015 for Memorial Day. Orders placed after 2pm on Friday the 22nd will ship out on Tuesday. Thanks!

Member #455671

Member Since: July 19, 2013

Country: United States

  • Looking closely at the picture it appears the grounds are tied together and form a ground plane on the back side of the the board. So, they provide a common ground for whatever two circuits or boards you are translating levels between. Not hooking them up would cause the signals to float and give unreliable results.

No public wish lists :(