[sf-lug] SF-LUG meeting notes for July 5, 2020
tom r lopes
tomrlopes at gmail.com
Mon Jul 6 02:48:32 PDT 2020
>
>
> ---------- Forwarded message ----------
> From: Owen Peery <okpeery at gmail.com>
> To: sf-lug at linuxmafia.com
> Cc:
> Bcc:
> Date: Sun, 5 Jul 2020 15:27:44 -0700
> Subject: [sf-lug] SF LUG today
> Hi Everyone,
> Thanks for letting me join your meeting. I had to go abruptly as my dog
> started barking hysterically, due to some more fireworks going off. I hope
> to join again, I actually look forward to a face to face meeting sometime.
> The cafe you used to meet at, is close to my school.
>
> I'm trying to use motioneyeOS to setup a security camera on a Raspberry Pi
> 3b+ to monitor the area where we had the arson. I keep getting stuck as the
> directions I've seen are approximations, not really fully step by step, as
> I need, since I'm a bit of a newcomer to Linux. If anyone has done this
> before, let me know, I might have a few questions.
>
> Until next time . . .
>
>
Yes Owen, sorry I didn't get to meet you.
But I think, maybe you would be interested in the Berkeley.Pi group.
We meet 3rd Sundays 11am till whenever. Find us on the Jitsi page
meet.jit.si/Pi.BerkeleyLug
(note the new URL to match the current branding)
None of us is expert at the Pi, but are open to everyone trying
and learning new things.
I have not yet tried motioneyeOS Back in the day I did run
Zoneminder (https://zoneminder.com/) with some very cheap
IP cameras and it was alright but for picture quality. But I kinda found
that better cameras just get you a really good picture of someone
you don't know :-) (If you expect it is someone in your
neighborhood -- then that's a different story)
> ---------- Forwarded message ----------
> From: Bobbie Sellers <bliss-sf4ever at dslextreme.com>
> To: SF-LUG <sf-lug at linuxmafia.com>
> Cc:
> Bcc:
> Date: Sun, 5 Jul 2020 16:52:05 -0700
> Subject: [sf-lug] SF-LUG meeting notes for July 5, 2020
> Hi LUGers,
>
>
Also mentioned was the Jitsi client app here:
https://github.com/jitsi/jitsi-meet-electron
It is an App Image. I had no idea what an appimage was but
it seems to be self contained. Just download, make executable,
and double click.
Even easier just connect to theJitsi meet server in a browser.
Rick talked about working on a private Jitsi Meet server. Sounds like
he has just begun. Hopefully he'll have more to say next time.
Rick also mentioned a Raspberry Pi -like sbc with pci-e
The RockPro64:
http://wiki.pine64.org/index.php?title=ROCKPro64
It has an actual 4x pci-e slot on the board! Amazing.
And the price is not far from a Pi4.
> I have seen before the NanoPi M4 which has pci-e on
> header pins.
> http://wiki.friendlyarm.com/wiki/index.php/NanoPi_M4
> and Sata hat http://wiki.friendlyarm.com/wiki/index.php/NanoPi_M4_SATA_HAT
>> I mentioned at that someone has found pci-e on the Pi4 by
>> removing the USB 3.0 bridge chip.
>>
http://labs.domipheus.com/blog/raspberry-pi-4-pci-express-it-actually-works-usb-sata-gpu/
>> (requires a hot air soldering station and some experience)
>> Another person made a little 2-layer pcb that can be
>> soldered down instead of all those tiny jumper wires.
>>
https://hackaday.com/2020/07/01/adding-pcie-to-your-raspberry-pi-4-the-easier-way/
Late in the meeting we talked a little about running Linux on a
Chromebook.
The non-ancient Chromebooks have builtin Legacy boot option which
you can get if you enable Developer mode.
My Samsung Chromebox didn't have this option.
All ChromeOS devices run a Coreboot firmware (I can't find the
details on the Coreboot wiki but they are here on the Google Git:
https://chromium.googlesource.com/chromiumos/third_party/coreboot/)
Stock Coreboot images: https://johnlewis.ie/Chromebook-ROMs/shellballs/
Modified Coreboot firmware (UEFI support) at https://mrchromebox.tech/
Also find /u/MrChromebox on Reddit
Support for Atom Baytrail and later in 5.8 kernel:
https://www.phoronix.com/scan.php?page=news_item&px=Linux-5.8-Media-Updates
These Intel CPU's were meant to compete for the Tablet and cellphone
market but not much success. So kinda abandoned by Intel. And
much of the hardware is integrated into the CPU. Linux drivers have
taken a while to catch up.
I have a couple Baytrail 2-in-1 tablets. They are similar to the Intel
Compute Stick. Only 1 to 2GB ram and Emmc storage. 32bit UEFI
even though the CPU is 64bit. Used to be you needed a heavily
patched Linux to use much of the hardware. But later kernels
have sound, touch screens, etc, working. They run very nice
with LXDE. I think with a little bit of code you could get tablet
mode to work automatically in LXDE.
Anyways, That is what I remember of the meeting.
See you next time,
Thomas
Well I had tuned in early than every one to check the camera.
> It worked ok.
> But with Jitsi you need to use Firefox in the latest version or
> Chromium.
> I tried to use SeaMonkey but it is not compatible with Jitsi.
> Using is learning.
>
> One thing I think is very important is to do your updates before the
> meeting as we got to see someone running their updates on the Jitsi
> screen. Also asap you should get a name and at least an initial up
> on the Jitsi screen.
>
> On mine using Firefox 78.0.1 I set up in the Preferences that Jitsi
> was
> allowed to use the camera and microphone but while at the meeting i had
> go to my system volume control and increase the response from the
> microphone so that people could hear me. After the first adjustment
> I had to turn down the response as other people reported some extraneous
> noise.
>
> Further in the lower lower right hand corner of the Jitsi connected
> screen
> are three very small vertical dots. Clicking on these lets you add a
> name to the
> screen you are seen on then if the bandwidth is low you can reduce the
> video
> quality and you can put your background out of focus. Very handy for those
> of use with less attractive backgrounds.
>
> We were graced with the mutual presence of John S.; myself of course:
> Al Waley who was trying to debug a problem;
> Akkana P. from further east. She left early for outdoor activities;
> Thomas;
> Ken S. who had his own problems and left early;
> John ?
> Michael Paoli who seemed to be having camera problems and was sharing
> a terminal screen with us;
> and Rick M. who came late but was still there at 1 PM when I left.
>
> The main topic initially was the use of the equipment we have in
> front of
> us. That is how I learned about the 3 vertical dots and their utility.
>
> Then we talked about the fireworks which the unqualified were
> shooting off
> yesterday evening. I live in downtown San Francisco and we heard loud
> booming
> and at hand either gunshots or firecrackers. And I was up after
> midnight listening
> to this and other noise including sirens in the night. Rick was
> distressed because
> rockets were being used which is very dangerous in this dry weather.
>
> Lots of other people had stories about their neighborhood and even
> Akkana
> Peck in the Mid-West(Nebraska if I have that right) was shocked at the
> amount of
> fireworks available there. When I turned on the TV news at 6 AM they
> showed
> the pall of smoke hiding Oakland and the haze of smoke obscuring details
> of the
> East side of San Francisco. In addition to this we have learned that
> the smoke
> from firework is really bad pollution, unhealthy for living things and
> people.
> I think that is a shame because I remember the smell of the fireworks from
> early youth and now to learn it is poisonous. Bye-bye nostalgic
> explosives.
>
> Next topic was what are we doing during our Shelter At Domicile or
> SAD days.
> One of the attendees, Thomas, it may have been was happy to discuss
> exactly what
> he does as a Computer Sciences teacher from Kindergarten thru 8th grade and
> he has been trying to get computers refurbished to hand out to kids whose
> families are suffering computer shortages at this SAD time.
>
> We indulged in some reminisces about how much we learned or did not
> learn during our own school days. I for example learned to do
> interpolation
> on a slide rule though I never mastered the abacus. Nor did I retain a
> good
> hold on Calculus.
>
> I myself have been playing lots of Angband. This is a dangerous habit
> as I forget to eat and drink when playing which leads to gorging and
> dehydration. I am playing on MX Linux running in Virtual Box on my
> PCLinux on the Dell E6540 from which issue all the redundant verbiage
> you get to glance at from time to time.
>
> From there it went to discussion of various software, and a site
> that Rick
> M. is trying to learn more about.
>
> I suggested because my sound was not clear, that Rick should post
> to the
> LUG list and see what people with time on their hands can do. I am sorry
> but I was not able to to determine exactly what Rick was interested in
> at that point.
>
> Anyone attending the meeting is free to correct my omissions or
> incomprehension of the activities and asked to do so asap so that the
> membership not in attendance will not be mis-informed any longer
> than necessary.
>
> Next meeting should be on Sunday, August 2, 2020.
>
> Bobbie Sellers
>
>
>
>
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