• That means if we're using a watch crystal to get decent timekeeping, we can't use C15 for something else. Is this correct?

  • Yep, that's it... Otherwise it's fine to use, but C13-C15 can't supply quite as much current.

  • Gaah! What a pain! (it happens to be very inconvenient for me to lose that pin, as it's in the middle of a keypad connector, which I can't really move out of the way)

    IMO, this should be probably mentioned on http://www.espruino.com/Clocks

  • Thanks, yes, I'll update it.

    I guess you could cut the track and then wire another pin up in place?

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So C15 is one of the pins used for an external crystal...

Posted by Avatar for DrAzzy @DrAzzy