[time-nuts] GPS module recommendation for Pi timing

[Hal Murray]

tshoppa at gmail.com said:
> You prominently mention both milliseconds and TOD RTC. Note that all common
> RTC chips (e.g. DS1307) only directly read out time to the previous second.
> They do not read out directly for milliseconds although you can try to
> interpolate based on seconds edge. 

Some of those chips have a pin that is intended to make an interrupt.




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