[arm-allstar] Pi3B vs Pi2B temperatures

[Sam Skolfield]

 Thank you everyone for your response. Doug, Neither have ventilation,
which was why I found it bizarre that the new 3b was way hotter than the
2b. Today I dug out another to be with the same case, and temperatures were
The same as my old 2b, perfectly  acceptable. Makes sense that the heat
sinks need air across them.


 Thank you,
-SS

On Tue, Jul 16, 2019 at 7:46 AM "Doug Crompton via ARM-allstar" <
arm-allstar at hamvoip.org> wrote:

> Sam,
>
>  You mentioned being in plastic enclosures. Does it have any ventilation? I
> use small fans on all my nodes with heatsinks. I modified cases to mount
> the fans. You do not have to move much air to reduce the temperature.
> Running a 12V fan on 9V or using a series resistor reduces the speed and
> extends fan life. This is also highly dependent on ambient temperature and
> CPU usage. All of my Pi's are in a fairly constant 72F environment. I am
> typically in the 40-50C green range on all of them and several run in turbo
> mode.
>
>
> *73 Doug*
>
> *WA3DSP*
>
> *http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*
>
> On Tue, Jul 16, 2019 at 5:51 AM "Sam Skolfield via ARM-allstar" <
> arm-allstar at hamvoip.org> wrote:
>
> > Hello all,
> > I've been running a simple node on a Pi2B for a year now, a single node
> > with a voter instance. It's always displayed around 107º-113º, typically
> > 107
> > º. Last night I just set up a fresh install on a brand new Pi3B with
> > heatsink kit with the same voter setup, and was surprised to see it up in
> > the 120º range. I ran top on both servers and compared, they seemed to
> have
> > a similar load. I swapped microSD cards and sure enough the new Pi3B
> still
> > ran hot! Both Pis are in plastic enclosures. Perhaps the adhesive
> heatsink
> > compound is hurting more than helping? I'm curious if anyone has had
> > similar experience.
> >
> > --
> > KJ6QFS
> > Sam Skolfield
> > _______________________________________________
> >
> > ARM-allstar mailing list
> > ARM-allstar at hamvoip.org
> > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
> >
> > Visit the BBB and RPi2/3 web page - http://hamvoip.org
> _______________________________________________
>
> ARM-allstar mailing list
> ARM-allstar at hamvoip.org
> http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
>
> Visit the BBB and RPi2/3 web page - http://hamvoip.org

-- 
KJ6QFS
Sam Skolfield