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SparkFun will be closing early at 3:30 Friday 5/27 and remain closed Monday for Memorial Day (5/30). Orders placed after 2pm MT on Friday (5/27) will process and ship out on Tuesday (5/31).

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?

No public wish lists :(