<xiangfu>
DocScrutinizer05: I bought 4 N900 phones.
<DocScrutinizer05>
:-D
<xiangfu>
DocScrutinizer05: I think I will receive them in 2 or three days.
<DocScrutinizer05>
do those sellers offer more of them?
<xiangfu>
DocScrutinizer05: Yes.
<DocScrutinizer05>
great! :-)
<xiangfu>
someone have more then 500.
<xiangfu>
most of them have less them 100 devices.
<DocScrutinizer05>
yes
<DocScrutinizer05>
less than 100 is quite normal
<xiangfu>
(500 one): the price ~100USD.
<xiangfu>
the four devices I have bought from 40USD to 120USD.
<xiangfu>
DocScrutinizer05: I am not sure if I can send it to you before Chinese New Year. it is like all people stop working. I will let you know when I receive them.
<xiangfu>
DocScrutinizer05: do you need me do anything on the device before I send it out?
<xiangfu>
I can disaccemble them. :)
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<DocScrutinizer05>
please don't worry abut sending them to me quickly, rather evaluate if they are decent quality :-)
<xiangfu>
DocScrutinizer05: ok
<DocScrutinizer05>
the price is "normal"
<DocScrutinizer05>
and expected
<DocScrutinizer05>
(~100USD)
<DocScrutinizer05>
we can handle that
<DocScrutinizer05>
:-D
<DocScrutinizer05>
great news indeed. Many many thanks!
<xiangfu>
nope.
<xiangfu>
DocScrutinizer05: just FYI: we own a small factory with a SMT line and some people there.
<DocScrutinizer05>
good to know
<DocScrutinizer05>
maybe we could for example have those 500 disassembled by you before shipping them to us. would make sense since here we have no resources to do that job, unless I dedicate 4 weeks to it ;-)
<DocScrutinizer05>
of my time
<xiangfu>
DocScrutinizer05: Yes. that is what I though. we can disassembled them.
<DocScrutinizer05>
QA and disassemble
<xiangfu>
I will try that first in two days.
<xiangfu>
:)
<DocScrutinizer05>
I'll link you to the service manual
<DocScrutinizer05>
L3_4 is a comprehensive technical ,amual about repair and all
<DocScrutinizer05>
manual
* xiangfu
downloading
<DocScrutinizer05>
irrelevant for you
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<xiangfu>
we don't need to disassemble them like the "EXPLODED VIEW". right?
<xiangfu>
do you need this: MEMORY_CARD_PCB, CAMERA_MOD_5MP, QWERTY DOME SHEET?
<wpwrak>
xiangfu: (wiki page) nice !
<wpwrak>
the "combines binary" is something a bit exotic, though. not what people would normally use. the regular path is boot loader with swd and then, ever after loading the application with dfu
<DocScrutinizer05>
xiangfu: we might need the domesheets, though that's terrible mess to scavenge and re-use
<DocScrutinizer05>
we prolly don't need the 5MP cam module, we are using a different variant
<DocScrutinizer05>
memory-card-pcb is a immanent part of main PCB
<DocScrutinizer05>
connected to main PCB by a embedded inner layer of flex PCB
<DocScrutinizer05>
xianfu: (hope you read chanlog) we don't need complete display half disassembled, actually we'd prefer to have it "pre-"assembled to simply connect it to the main PCB
<DocScrutinizer05>
xianfu: actually in Nokia_N900_RX-51_Service_Manual_L1L2_v1_0.pdf please stop disassembling with photo #15, #16
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<DocScrutinizer05>
we need QA on the complete display half: scratch free, display OK (no dead pixels), front camera and indicator RGB LED and IR proximity sensor working, earpiece working
<DocScrutinizer05>
test shall be done against a known-good main PCB
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* whitequark
got a tig welder
<whitequark>
soon, custom vacuum gear
<kyak>
a what?
<whitequark>
welder that uses a tungsten electrode in inert gas (argon)
<whitequark>
you need that for stainless
<whitequark>
and most vacuum stuff is made from 316L
<kyak>
oh damn.. i only wonder how you get all this stuff with the current rate exchange :)
<whitequark>
the biggest issue was finding 316L filler rods in qty of less than 5kg. 5kg of those cost like a whole new welder
<whitequark>
argon is insanely cheap. 300 RUB ($5 for everyone else) for a 10L cylinder
<whitequark>
I'm told it costs at least an order of magnitude more overseas
<kyak>
had to google some of the stuff.. you couldn't get 316L is russia?
<whitequark>
I could easily get them in 5kg boxes
<whitequark>
it took two days to find a local place that sells you them one by one
<whitequark>
same for TIG torch accessories, really, but the rods are really fucking expensive
<whitequark>
now the last part I need is some source material, which proves most problematic of it all
<whitequark>
no one wants to sell someone a 20x20cm square of 316
<kyak>
i guess it could rise suspicion :)
<whitequark>
huh? why?
<whitequark>
it's just more economical, and I guess more lazy, to sell huge 2x3m sheets
<kyak>
ehm, why not? i, the person "from outside", don't see a single reason why you would want a 20x20 piece of metal
<kyak>
my next question was - what were you going to do :)
<whitequark>
and why would that be of any concern to you?
<kyak>
nah, not to me..
<whitequark>
behold, the most toxic of all USSR mentality, in the chat right next to you
<whitequark>
if a person does something you could not think of, they must be doing something /weird/! they must be crushed before they actually have a chance at success!
<kyak>
that's quite right
<whitequark>
it's actually quite telling that the people actually selling me shit have /never/ asked what i want it for. they either sell or decide it's not worth it for them
<whitequark>
it's always the 'policymakers' who get these ideas
<whitequark>
can't make anything, make a policy, i guess
<kyak>
let's put it aside, what are you doing right now?
<whitequark>
a chamber for magnetron sputtering
<whitequark>
(not the microwave kind)
<kyak>
ok, after a bit of google translate i (maybe) get it. What's it for?
<whitequark>
I actually have no idea how it's called in russian
<whitequark>
also no argon, so the films are all oxidized to hell
<whitequark>
but that one can be built using a dumpster and determination
<whitequark>
I have a proper MOSFET-based power supply and feedback for process control
<whitequark>
and a nicer chamber, soon
<kyak>
ok ,so what's your end mission anyway?
<whitequark>
short term, I want to make a GC-MS
<whitequark>
it requires some impressive chamber making skills, and somewhat less impressive HV RF power supply skills
<whitequark>
specifically a QMA-based MS
<whitequark>
I've had a productive conversation with a guy who makes those for a decade or two, I have a good idea of what electronics will I need
<whitequark>
chamber, not as much so, but should be doable
<whitequark>
long term, CMOS ICs. it'll actually require sputtering (those metal gates!), and RIE, and CVD (both of which use really similar equipment to a sputterer), and a QMA (without the GC part), and a bunch more things
<kyak>
oh, man, too much for me to google.. so you want to make device to analyze what is contained in a given sample of matter?
<whitequark>
yeah
<kyak>
veryfancy!
<whitequark>
it's not a star trek tricorder
<whitequark>
because it requires fairly complex and extensive calibration
<whitequark>
but it's a very useful device
<kyak>
is it for your own entertainment or is it your work project?
<whitequark>
entertainment
<kyak>
does it matter what to analyze (gas, liquid, etc? )
<whitequark>
well, the mass spectrometer works with ions
<wpwrak>
kyak: i guess at work he builds wormhole generators ...
<whitequark>
ionization is actually a topic unto itself
<whitequark>
you could ionize gases, or vaporized liquids
<whitequark>
or you could smash ions into a surface, and sputter some ions
<whitequark>
called secondary ion mass spectrometry
<kyak>
whitequark: so you need to take action on that matter? like, ionieze it?
<whitequark>
v. useful for analyzing the "slices" of surfaces
<whitequark>
like the exact composition of an oxide film on steel, shit like that
<whitequark>
yeah
<whitequark>
in a GC-MS you get a gas inside the spectrometer
<whitequark>
usually you vaporize a liquid. the GC column is held at 100-200°C
<kyak>
wpwrak: whatever he builds, i only hope it works for good of mankind: ))
<whitequark>
wpwrak: lolnope. smartphone apps
<whitequark>
and until recently, websites on ruby on rails
<kyak>
like that --^ :)
<kyak>
whitequark: ok, cosindering i only understand 10% of what you say, it's still very interesting. how the hell is this entertaining?
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<wpwrak>
i guess the real objective is to have a talk for the next EHSM. the sort of talk that will discourage all further submissions :)
<whitequark>
converse question, how the hell is any of shit people usually find entertaining is not boring as hell
<kyak>
i mean, entertaining is good, but doing real profit in production/ whatever?
<whitequark>
well
<whitequark>
these skills are quite rare, much more so than your typical webdev shit
<whitequark>
and they are valued well if you know the right people
<whitequark>
but this is not why i work on it
<whitequark>
wpwrak: actually inspired by EHSM here
<whitequark>
met the MS guy at EHSM
<kyak>
i'm telling you, this shit is valued, "even" in russia :)
<whitequark>
people doing this stuff in russia are stuck a few decades ago
<whitequark>
hell, the MS guy (from Poland, which is ex-USSR) was surprised when I showed him that you can /simulate circuits on a computer/
<whitequark>
quote: "wow, you can do that?!"
<kyak>
still the wikipedia article mentiones some "soviet time" publictions
<whitequark>
well, warsaw pact
<whitequark>
yes, there was quite some impressive work done
<whitequark>
but i mean. these people still consider a turbomolecular pump 'too complex' and 'new' and 'expensive'
<whitequark>
and sit on their crappy oil diffusion pumps
<whitequark>
which are just... i don't know why would anyone ever want to use that
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<kyak>
yep, i don't know what you are talking about, but i understand what you mean
<kyak>
still, i'm seeing sometimes (by the duties of me job) people and organizations who are doing very crazy things
<whitequark>
I don't doubt that, I have seen it
<whitequark>
but also things that are heroic only if you pretend it's still 1970
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<kyak>
that, too
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<whitequark>
have you /seen/ the welding equipment that /still sells/?
<whitequark>
they use a 200-kg rectifier and a 100-kg rheostat to control current
<whitequark>
to do the job that a 10kg IGBT-based inverter does much better
<whitequark>
they /still manufacture those anew/
<kyak>
whitequark: i'm wondering, why don't you find a job that satisfies you both mentally and financually? I mean, some doing some ruby shit for money and crazy state-of-the-art the entertainment?
<kyak>
just doesn't make sense...
<whitequark>
because i have attention span of a fruit fly and i don't want my financials to be dependent on whether i get bored with the cool thing i came up with yesterday
<whitequark>
and ruby shit is already boring to the extreme, it can't get any worse by design
<whitequark>
that's half the reason.
<whitequark>
the second half is that current state of the art requires years of investment just to get up-to-date
<whitequark>
and it pigeonholes you into a specific position in specific industry
<whitequark>
whereas as it is, i'm free to go as wide as it pleases me
<whitequark>
it'll be /nowhere/ near state of the art
<whitequark>
ever
<whitequark>
because state of the art means hundreds of people
<kyak>
so it's you personal freedom that's more important?
<whitequark>
i suppose? if it's going to be for fun
<whitequark>
also, ruby pays well. my last job (pre-crisis) was 90kRUB net
<whitequark>
in a place that does cutting edge research in RU they'll give you twenty if you're lucky
<whitequark>
that's a choice between rent and food :]
<kyak>
and getting to your question.. i don't know of those companies. But i know of companies who build atomic stations abroad, and that's pretty state-of-the-art - and also companies who are into military and space, and there are pretty fascinating things going on
<whitequark>
(atomic stations) lol
<whitequark>
state-of-the-art nuclear plants are /literally/ based on 1970s design
<whitequark>
because of regulatory inanity
<whitequark>
and space, really, too, compare what SpaceX does with what NASA did
<kyak>
you are not even close to knowing what's going on in those high regulated industries (like medicine, aerospace, and nuclear) - but let me assure you, we are very solid there :)
<kyak>
1970s design doesn't equal to bad
<whitequark>
i certainly hope so
<kyak>
also, it's not true
<kyak>
i mean, its not 70's design
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<whitequark>
so, where's our LFTR reactors? :]
<kyak>
let me google it for me :)
<kyak>
ah, i don't know.. i'll try to ask when i have a chance
<whitequark>
as far as I'm aware, the problem is that regulatory requirements are evolved to pigeonhole old reactor designs
<whitequark>
which are good at producing weapons-grade plutonium and not good at not producing shit that takes billions of years to degrade
<whitequark>
there are real problems with LFTR, which could be solved with more research, who almost no one does, because even a better LFTR reactor isn't going to be approved for operation
<kyak>
there is IEC61508 (which has according GOST) and also IEC 61513 which is followed here in RUssia.. and these regulations are definitely not from 70s
<whitequark>
they still favor the same old designs
<whitequark>
I don't know what happens in space, but I know that SpaceX lands their boosters and NASA or Energiya throw them in the dumpster
<whitequark>
and I really, really doubt that SpaceX made any fundamental breakthrough
<kyak>
ah! actually, not at all. Those standards are pretty generic and they support many design workflows. Including modern, such as model-based design
<whitequark>
I don't know further details from this point but this is a fairly common complaint by engineers from industry, so you'd have to find someone more educated than me
<kyak>
that's a fair complaint
<kyak>
if viric happens to visit us sometime, i'll be eager to tell you more :)
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<viric>
hi
<viric>
damn it, publicbt does not tell their own url in their website