Rasclock (PCF2127 ) Hardware Clock FreeBSD 12.0

[Stefan Parvu]

> It's a bit frustrating that the Afterthough site has no info on what's
> different between various revs of the rasclock.  My v4.2 has a row of
> through-holes on the edge of the card where you can add pins and get at
> various signals.  One of the signals is VBAT, any chance you could get
> a scope or meter on that and see if the voltage really is low, and
> whether it drops over time, like something really is draining the
> battery?  

right. looks like that. Of course I could try another rasclock 4.0 - I have
3 around. I can test with another clock and then I could test with raspbian
to see if this is OS related or hdw. 

Then I will gget soon rasclock 4.2 - so then I could try exactly the version you
have. Except the board would be different. Not sure if thats important but
something might be different between RBPI2 and RBPI3B+ 

> Also, I wonder if there's any difference between its behavior
> when it's mounted on the rpi versus if you take it off and set it aside
> for a few hours.  Like maybe on an rpi3 there is current somehow
> leaking back into the rpi circuitry.

Hmm. I could test first this one. I could set and fix the time. The power off
the thing for coupld of hours or until morning and then plug it back to my
board and check if there is any difference. thats a good point.


Stefan