GaCuest | 4 Feb 19:08 2016
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Re: fosdem2016

En 4 de febrero de 2016 en 0:47:41, Luke Kenneth Casson Leighton (lkcl <at> lkcl.net) escrito:
> On Wed, Feb 3, 2016 at 10:52 PM, Wookey wrote:
> > +++ Luke Kenneth Casson Leighton [2016-02-03 19:02 +0000]:
> >> > I had a quick look but failed to find details of the screen, keyboard,
> >> > boards and 3D parts online, other than scattered through many mailing
> >> > list-messages. Never mind info like the above. Is there a page that
> >> > actually has the info someone keen would need to get started?
> >>
> >> eek - sorry :) i usually maintain a page that has them but haven't
> >> put it together yet - give me a mo and it'll be at
> >> http://rhombus-tech.net/community_ideas/laptop_15in/
> >
> > OK, cheers. So battery and touchpad not available in ones and keyboard
> > suppiers are idiots. So some associated faff there :-)
>  
> yyeahh... there's a whole stack of that
>  
> >> the boards i want to do another run in the next few weeks, wookey, so
> >> if you'd like to buy some you'd be most welcome. i don't want to get
> >> too many done in case they need modifications. they're only
> >> single-sided 2-layer 1.5mm thick so are "bog standard" i.e. dirt
> >> cheap. i think this time i'll get them made up rather than do the
> >> component assembly myself.
> >
> > I am interested, but I was a little put off by the prices you listed
> > last time at $120-150 per board and 3 boards.
>  
> a qty 5 figure is $1700 for the CPU Cards (including components and
> assembly). a qty 5 figure for these 2-layer single-sided PCBs is
> going to be waaay less than that. i'd put a guess of around $60 for
(Continue reading)

Wookey | 4 Feb 01:27 2016

Re: fosdem2016

+++ Luke Kenneth Casson Leighton [2016-02-03 23:47 +0000]:
> On Wed, Feb 3, 2016 at 10:52 PM, Wookey <wookey <at> wookware.org> wrote:

> a qty 5 figure for these 2-layer single-sided PCBs is
> going to be waaay less than that.  i'd put a guess of around $60 for
> PCB1, $50 for PCB2 and $50 for PCB3. 

OK, that's a lot more doable.

> > I could
> > afford it but a) I'm tight and b) I don't like buying electronics
> > unless I'm fairly sure I'm going to get decent use out of it (all that
> > eco-thinking).
> 
>  good for you!  so the question becomes: is it worthwhile for you to
> spend the time as an early adopter, to help "prove the concept" - i'm
> pretty sure it'd be possible to find a home for the end result (i have
> to give one to dr stallman for example).

verses debian cross-compilers, fixing troggle, drawing up a major cave
survey backlog, insulating the rest of this house, flogging the
e-moped taking up space in the shed or getting my humidity/temp
sensors and LED lighting finished :-) I need to retire, and then learn
to start projects at a lower rate than finishing them for a while. :-)

>  you've seen the lichee A64 source code from the a64 sdk, right?
> links and mirrors were discussed here about 2 months ago,

I downloaded it after those mails yes. But not looked inside. 

(Continue reading)

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fosdem report

http://rhombus-tech.net/articles/fosdem2016/

awesome.  i'm completely out of steam now, happily relaxing at the
2go4 hostel, going ice-skating this evening and back in den haag
tomorrow :)

---
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podcast interview with liliptuting

http://liliputing.com/2016/01/interview-with-eoma68-libre-laptop-developer-luke-kenneth-casson-leighton.html

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liliputing article

http://liliputing.com/2016/01/eoma68-libre-laptop-features-upgradeable-cpu-card.html
nice to see!

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fosdem2016

well um i'm here.. an entire week early :)  long story, but having
booked the train tickets and hostel, nobody actually told me i was on
the wrong day because of two separate and unrelated pieces of
confusion / misprints!  i decided rather than go back home to simply
stay a week, having brought everything - soldering-iron, ruler,
pliers, scissors, laptop, the works - with me all this way.  15kg
suit-holding bag on wheels.... and in my infinite wisdom i decided
that it would be an interesting experience to come to belgium on
skates.  with a 15kg wheeled bag.

so, anyway, i'll be volunteering for setup on the friday, i have the
laptop to demo, am registered for a lightning talk on saturday
morning, this might change if there's a full hour slot available (i'm
on short-notice standby).

it'll be fun.  the http://2go4.be is pretty good, the no 71 bus goes
straight to ULB, there's a walk each end of about 250 metres... am
enjoying the accidental circumstances...

l.

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EOMA68 laptop partially assembled

http://rhombus-tech.net/community_ideas/laptop_15in/news/EOMA68_Libre_15.6in_Laptop_partially_assembled/

lots to get fixed for another iteration...

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floor covered in bits of plastic and circuit boards...

http://rhombus-tech.net/community_ideas/laptop_15in/news/EOMA68_Libre_15.6in_Laptop_parts_pre_assembly/

:)

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libre laptop 3d print run 90% done

holy cow there are *twenty five* separate parts in the laptop's
casework.  that's just nuts.  if someone had said to me, "yeah you're
gonna be making a 3d printed laptop, you'll need to do it in 25
separate parts" i would have said, "naah, you're having a laugh -
surely it doesn't have to be that complex" which in the past has been
my cue to run like hell from any project whenever someone uses the
phrase "surely it doesn't neeeeeed to be as complex as alll
thaaaat"... :)

anyway i'm nearly done - i just have the touchpanel holder to redo,
and the battery, pcb1 and keyboard tray supports that run off of it.
the parts are all trimmed / adjusted (some details in the join points
are just too small to be able to 3d-print accurately with filament),
so i should be able to begin assembly in a day or so.

fuuun.

l.

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laptop casework, jz4775 cpu card, fosdem 2016

hi folks,

right.  i've moved on to re-printing the 3d casework of the laptop,
most of that will be in higher-temperature ABS.  i'm about 50% the way
through that, so another 2-3 days and i'll have an assembled
prototype.  some bamboo 1.5mm plywood panels are arriving from a U.S.
supplier (the only one in the world that sells online 1.5mm bamboo!)
are arriving shortly.

the jz4775 cpu card, it turns out that digikey sent the wrong PMIC.
bizarre story: the ACT8600-QJ162-T became popular in the past few
months because of a smartwatch that was developed in china using the
ingenic jz4775 reference design.  so the formerly popular
ACT8600-QJ601-T suddenly became UNpopular, leaving the world's last
remaining supplier as being digikey.  so, that's a china-made PMIC,
which got shipped to the U.S. (customs-charge), got shipped back to
china (customs-charges), then provided by the agent to the factory,
then the factory put it on the PCB, then they sent that to me (customs
charges)... and then it turns out to be the wrong f*****g IC.

naturally it took a whole lot of shouting at digikey to get them to do
a full audit of the stock of ACT8600-QJ601-T PMICs, but i've placed an
order for replacements - to be sent directly to me - and will be
putting those on when they arrive.  also, only 1 out of the 6 PCBs
happened to _not_ have solder-bridges under the DDR3 RAM ICs, so i've
ordered some replacement DDR3 RAM and will be having a go at putting
on 78-pin BGAs with the IRDA solder station.  it'll be fun to try.
ok.... correction: it'll be fun to succeed.

also even though it's short notice i'm looking to go to fosdem 2016
(Continue reading)

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EOMA68-jz4775 first usb-loader hello-world success

http://rhombus-tech.net/ingenic/jz4775/news/

yippeee!  the jz4775 cpu card didn't blow up, instead it announced
itself on the usb bus, and i was able to modify a CI120 usbloader i
found, to upload a UART0-based "hello world" program.  next phase
would be to initialise the DDR3 RAM, then compile and upload u-boot
into DDR3 RAM and execute it.

all very exciting

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Gmane