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SparkFun Electronics will be closed on July 3rd, 2015 in observance of Independence Day. Any orders placed after 2:00pm MT on July 2nd will be shipped out after the weekend. Thanks!

Member #52138

Member Since: November 6, 2008

Country: United States

  • Yes, having the RTC battery input would be very useful, not to mention that the voltage regulator draws more power that the CPU in power down mode. Also, the voltage divider network to read the battery voltage uses 1Meg resistors, but the input impedance of the ADC is approximately 40K - huge measurement error!

No public wish lists :(