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 #226422

Member Since: May 18, 2011

Country: United States

  • If I power an UNO or a MEGA via USB, I get accurate readings, but if I power it via Vin (5v) the readings are off. 5v reads 6.2v and 12v reads 14.7.

    Is this because it is scaled for 3.3v? In any case, is there a solution?

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