[time-nuts] Oncore 1pps driver & LED
hmurray at suespammers.org
Thu May 4 16:14:39 EDT 2006
> I'd like to put an LED near the Oncore module that blinks on the 1pps.
> What's the best way to wire this up?
Some GPS boxes turn off the PPS signal when they don't have enough good satellites.
For those, a PIC works well as a LED driver: on solid when PPS is flapping, blinking when PPS is not changing, off when there is no power.
Obviously you can use your favorite tiny CPU. I happened to have a PIC programmer handy.
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