Hello and Welcome! If you have a technical question please check out our Forums. If you have an order or shipping question please refer to our Customer Support page. Please see all COVID-19 updates here and thank you for your continued support.


SparkFun will be closed on Tuesday, November 3rd because we are out voting! Orders placed after 2 pm MT Monday, November 2nd will ship on Wednesday, November 4th.

Member #133296

Member Since: May 9, 2010

Country: United States

  • SF, let us know on microprocessors whether the clock is crystal controlled, or resonator based. The difference between about +/- 2 seconds per day and about +/- 7 minutes a day can rule out some products for data acquisition or control when using internal time keeping. Sure, we could get a WWV receiver or buy an atomic clock (or even an RTC from you guys), but for about 20 cents difference or less and no hassle getting a crystal in the product works well for very many things.

No public wish lists :(