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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 #104919

Member Since: January 6, 2010

Country: United States

  • I understand that the 3 to 8 decoder and the extra pin from the microcontroller selects 1 of the 9 rows of LEDs but how does it know which of the 3 LEDs in that row to select? I apologize for the trivial question but my friends and I have been analyzing this for some time and we’re still scratching our heads @_@.

No public wish lists :(