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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 #341341

Member Since: July 27, 2012

Country: United States

  • Why no current limiting resistors? After doing some calculations, it would appear that the voltage across the LEDs is way to high. The only thing that I can think of is that the software running on these is pulsing the LEDs. Turn on the row, small delay, Turn off the row, large delay. Repeat for all remaining rows. Is this a far assumption? Doesn’t this reduce the life of the LEDs? What happens if the software crashes?

  • How much current can be drawn from this board, on the ground and 5 volt rails? Are they capable of 4 amps?

No public wish lists :(