[arm-allstar] Issues with DMK URIx USB

[Doug Crompton]

Jim,

 I assume that you have other Internet devices there that you DO have
contact with? If not It could be an Internet issue or router issue at the
site.

Power is often an issue but I would have to say that I run a dozen or more
Pi's each on wall warts of varying brands and have for years without a
problem. They do have to be spec'ed for the Pi and not some charger laying
around for your whatever. I did have problems with the encapsulated car
adapters. We had several fail and another issue I see with them especially
on the 3B and 3B+ is they put out either exactly 5v or even a little less.
Once loaded and by the time it reaches the Pi it often goes below the low
voltage trigger point. When this happens the red light on the Pi goes out
or goes out intermittently. This usually will not stop the Pi from
functioning but you will get low voltage kernel messages and it is not a
good thing. Most wall warts are rated at 5.2v @2A or more and the voltage
at the Pi stays at 5V or a little above.

Since most hams have a 12V master source of considerable current a board
such as this works very well. We use them and they are reliable. Just make
sure you adjust if to the correct voltage before use. Nominally 5.1-5.2V.
Also a good idea to fuse the input at 2A.

https://www.amazon.com/QLOUNI-Converter-3-0-40V-1-5-35V-Regulator/dp/B0788HNX1P


*73 Doug*

*WA3DSP*

*http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*


On Sat, Dec 22, 2018 at 6:21 PM "Jim Darrough via ARM-allstar" <
arm-allstar at hamvoip.org> wrote:

> Dang. K5CKS and I went up on the hill when his allstar Pi stopped
> responding to connect attempts, both via WinSCP and Supermon. Earlier it
> had done this and a power-cycle fixed it, but that only lasted a day.
>
> We assumed that the MicroSD card was corrupted, so wrote the backup
> image to a new one (well, not NEW, just a different one). System came
> back up fine, but did the exact same thing after we had come back down
> from the site.
>
> Has anyone seen this problem? I think maybe the RPi is having problems,
> but I can't prove that.
>
> 73 Jim KI7AY
>
> On 12/22/2018 15:40, "David McGough via ARM-allstar" wrote:
> > Kyle,
> >
> > My suspicion is either an RFI condition that occurs when transmitting, or
> > perhaps a ground loop.
> >
> > Have you tried transmitting into a dummy load and looking for these
> > errors?
> >
> > 73, David KB4FXC
> >
> >
> >
> > On Sat, 22 Dec 2018, "Kyle Krieg via ARM-allstar" wrote:
> >
> >> All,
> >>
> >> I've recently had issues with my DMK URIx USB with misc errors when
> >> transmitting.  It has been working fine for months and now these errors
> >> started happening.  Had to take a screen shot of the errors as I could
> not
> >> get them to display when SSH'ed into the Pi.
> >>
> >> https://photos.app.goo.gl/uCU9bTpGTTWPBp92A
> >>
> >> I'm running a Pi with the hamvoip image into the URI with a TYT9000 as
> the
> >> radio.
> >>
> >> Things I have tried.
> >>
> >> Swap out Pi
> >> Change power supply
> >> Rebuild the Pi node with a fresh image
> >> Swap out the URI for another URI
> >> Swap out the USB cable from Pi to the URI
> >> Check the connections to/from the URI to the radio
> >>
> >> Only thing I have not changed is the radio, which I would not think
> would
> >> be bad in this situation.
> >>
> >> Do I have a bad URI?
> >>
> >> Kyle
> >> _______________________________________________
> >>
> >> 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
> >
> --
> 73 Jim,KI7AY
> la ciruela de Panama
>
>
> ---
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