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<limpkin>
Seems we're not in the same time zone then aha :)
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<DocScrutinizer05>
[2016-05-06 Fri 02:55:13] <tmyklebu_> google chrome *actually is* malware. flash is just shitty.
<DocScrutinizer05>
[2016-05-06 Fri 02:55:50] <tmyklebu_> they advertise that it sends your keystrokes to the mothership and all.
<DocScrutinizer05>
[2016-05-06 Fri 03:00:11] <gci_admin> There is also Vivaldi browser, based on Chromium but without the spying. Or so I have heard.
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<arossdotme>
hmm yea the sure mono 300w amp board is odd that they say its 300w into 2ohm when the amp sound be able to do mono 300w 4ohm.... hmm
<arossdotme>
sound=should
<arossdotme>
looking at the datasheet again it seams the TI IC in the sure 300w board can only do 130w 1%THD into 4ohm in PBLT setup. so i guess its not as capable as i thought it was but the IC’s bigger brother is :D tas5630
<arossdotme>
so ill get the yj tas5630 board unless i get the IRS one... :/
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<DocScrutinizer05>
sorry for OT: 10.40.66.150 what an IP is this?
<DocScrutinizer05>
it's showing up in my 192.168.4.1/24 network
<DocScrutinizer05>
could this be a damn brainfscked windows7 PC that has a *hostname* like that?
<DocScrutinizer05>
MEH!!! 10.0.0.0 10.255.255.255 Class A network 10.x.x.x 10/8 Class A private address block.
<DocScrutinizer05>
now I wish I had a log of my DHCP leases... Well I have but that definitely wasn't a lease
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<DocScrutinizer05>
could somebody please lock up in same room Putin and Erdogan plus 3 similar bigmouthed fools to help him against Putin, and only let out one party after the other deceased?
<DocScrutinizer05>
or lose the key and forget about it
<DocScrutinizer05>
ooh and before I forget: Turkey out of NATO, *subito*
<DocScrutinizer05>
maybe take Hungary with you
<whitequark>
DocScrutinizer05: what if they unite
<whitequark>
i won't take the chance
<DocScrutinizer05>
((lock up in same room)) preferably at some unknown random location in Syria
<DocScrutinizer05>
somewhere in the territories that are not controlled by gvmt troops
<DocScrutinizer05>
and thus prone to random bombing
<wpwrak>
limpkin: best to just say what you have to say, then pick up the response the next time you're around. and eventually, convergence may occur :)
<limpkin>
Aha :)
<DocScrutinizer05>
you seen this? (well that's what German TV news report, so take with a grain of salt) Turkish police stops a truck convoy to Syria or similar. Erdogan declared this is humanitarian help. Reproters publsih internal documents that say opposite, and show photos of cargo of grenades in that convoy. Reporters get sentenced 5 years for treason
<DocScrutinizer05>
in front of court some random asshole shoots at the reporter
<DocScrutinizer05>
limpkin: anelok is the name
<limpkin>
Thanks, I had forgotten
<DocScrutinizer05>
np :-)
<DocScrutinizer05>
(Turkey) and that same Erdogan think he can extort EU to cancel visa requirements for turkish
<DocScrutinizer05>
this idiot hasn't understood yet that he couldn't do us a greater favor than overbidding his hand
<DocScrutinizer05>
merkel gone, Turkey refugee treaty void, EU forced to find some *decent* honest solution for the whole mess, Turkey never member of EU and no visa-free immigration either
<DocScrutinizer05>
ohwell you may dream, no?
<whitequark>
how do you select fuses?
<whitequark>
i have a slow-blow fuse guarding a compressor that normally draws 4A
<DocScrutinizer05>
by smell? ;-D
<whitequark>
T type 5A
<whitequark>
it blows after a few dozen cycles, hot to touch
<whitequark>
that should be adequate for motor startup
<DocScrutinizer05>
no, isn't
<DocScrutinizer05>
not really
<DocScrutinizer05>
might be >1s
<DocScrutinizer05>
anyway the startup bursts are >10A most probably and thus age the fuse
<DocScrutinizer05>
eventually it will just give up
<DocScrutinizer05>
use a 16A if you can get. The device is supposed to have a built in protector circuit anyway
<DocScrutinizer05>
see !OVERLOAD"
<DocScrutinizer05>
s/!/"/
<qi-bot>
DocScrutinizer05 meant: "see "OVERLOAD""
<whitequark>
yes, it does
<whitequark>
the fuse is to catch failures elsehwere
<whitequark>
it also has a pump, a fan, a control box...
<DocScrutinizer05>
Protector MRT20APK Current (A) 13.2
<whitequark>
also I would rather catch a failure early than wait 5+ minutes until the protector trips
<DocScrutinizer05>
your fuse is supposed to not blow before the protector engages
<whitequark>
why?
<whitequark>
also, hm
<DocScrutinizer05>
because you don't want to change it every other day?
<whitequark>
that section is rather confusing
<whitequark>
the "protector" is a bimetallic plate that measures the temperature of the compressor casing
<DocScrutinizer05>
it also is a heater in itself
<whitequark>
oh right
<DocScrutinizer05>
see the resistor in the circuit diagram symbol
<DocScrutinizer05>
so it's basically a fuse
<DocScrutinizer05>
and it's set up in a way so it only triggers when the compressor suffers overload for whatever reasons. AIUI it does so at nominally 13.2A
<whitequark>
well, there are two actions
<whitequark>
it also watches for overheat of compressor without overcurrent
<whitequark>
if there is no cooling of freon then the compressor can pump but get hotter and hotter
<whitequark>
e.g. if the fan died
<DocScrutinizer05>
yes, Iknow those fridge compressor circuits
<DocScrutinizer05>
most usual overheating reason is repeated starts
<whitequark>
hmmm
<DocScrutinizer05>
those compressors are not made to get started more than once every 5 minutes
<whitequark>
this chiller i designed doesn't appear to suffer much from repeated starts, i tried running it with hysteresis of 1°C
<whitequark>
and it doesn't even get hot if the duty cycle is not high
<DocScrutinizer05>
I just can report what I've seen in hundreds of fridges
<whitequark>
yeah, I believe you about fridges, I've read that too
<whitequark>
I am wondering what is the exact difference
<DocScrutinizer05>
I've seen it
<whitequark>
it's not the compressor itself but rather something else about the freon circuit, I think
<whitequark>
hang on
<whitequark>
I remember now what I read about repeated starts, the core of the issue was not repeated start itself, rather repeated start was a symptom
<DocScrutinizer05>
try to start your fridge 4 times in one minute, it will go into chillout mode
<whitequark>
overheat, protector trips, cools down, turns on, overheat...
<whitequark>
then at some point it fails because it's not made to be that hot that long
<whitequark>
re chillout mode: isn't that just the PTC starter?
<DocScrutinizer05>
seen the effect I mentioned, a several dozen times
<DocScrutinizer05>
no, that's the overload protection afaik
<whitequark>
so let's try this, i'll start this thing 20 times in 1.5 minutes
<whitequark>
is that enough?
<whitequark>
i'm certain enough that repeated starts themselves aren't the issue that i don't worry about this killing my chiller
<DocScrutinizer05>
enough for your 5A fuse? ;-) for sure
<whitequark>
yeah, with some higher rated fuse.
<DocScrutinizer05>
look, a fuse with 10A is sort of warranted to stay intact with 10A, but the other characteristics vary massively with type of fuse. A simple household fuse 10A T may survive 20A for a 15 minutes
<DocScrutinizer05>
a 20*5mm will not survive for one minute
<DocScrutinizer05>
prolly not for 10s
<whitequark>
ok so I started it about 50 times as fast as it would run, running it less than for 1s every time
<whitequark>
actually the 5A fuse survived it all
<whitequark>
this is sand-filled ceramic so I think it has a higher effective capacity because of all the sand dissipating the heat
<DocScrutinizer05>
get datasheets if you want to know for sure
<whitequark>
and no the compressor is barely warm
<DocScrutinizer05>
*shrug*
<DocScrutinizer05>
I got no more experienced anecdotes to contribute
<DocScrutinizer05>
whether it makes sense to use a 10A rated power module for a compressor rated 13.2A overcurrent protection, is another question
<DocScrutinizer05>
can't you use a larger fuse, like 10*30mm or whatever?
<DocScrutinizer05>
prolly integrated into the power module, eh?
<whitequark>
yep
<whitequark>
that was like half the point
<DocScrutinizer05>
ideally use a softstart circuit
<DocScrutinizer05>
I designed a really oldschool "russian design" softstart for a cinema projector 1600W Xenon transformer/rectifier: relay coil in parallel to the consumer (transformer), a 20 Ohm series resistor that gets shorted by the relay contact
<DocScrutinizer05>
the friggin transforme was a quarter ton
<DocScrutinizer05>
literally
<whitequark>
250kg for 1600W?
<whitequark>
that seems super inefficient
<DocScrutinizer05>
yep
<DocScrutinizer05>
it had a monster DC choke for smoothing the current
<DocScrutinizer05>
no significan capacitors
<whitequark>
seems like stupid wasteful design
<DocScrutinizer05>
plus the whole thing was adjustable
<whitequark>
oh like a variac?
<DocScrutinizer05>
Selen rectifiers
<DocScrutinizer05>
made in the 1930s
<DocScrutinizer05>
yes
<whitequark>
oh 1930s that explains it
<DocScrutinizer05>
nah, nowadays that's a 5kg SPSU
<DocScrutinizer05>
I guess the xenon was even just 800W, no 1600
<DocScrutinizer05>
40..70A * ~25V
<wpwrak>
limpkin: it's very slowly crawling forward. i now have the next hw design mostly finished (still needs a bit more work on CAD, and then the layout)
<limpkin>
great! last time i tried to access the website it was offline or had some problems though
<limpkin>
are you alone working on it?
<wpwrak>
limpkin: with all that, i think it's time to try to a crowdfunding campaign. that projects needs proper funding to be able to speed up, so that'll be critical.
<wpwrak>
oh, right ... lemme put it back into service ... it'll spit out a complaint about hte certificate but it'll work
<limpkin>
sending you a pm
<wpwrak>
so far i do most of the work, yes. some biz side discussions with dave ball (but we haven't created a company just yet), discussions on the qi-hw list with various members, and a few people have contributed a bit of code, but i'd say it's something like 98% me so far. that will have to change, too :)
<limpkin>
congrats
<DocScrutinizer05>
krhrhr, good luck with changing that
<DocScrutinizer05>
yeah, even when cold it seems that fused quartz under 3 atmospheres pressure is not exactly healthy
<whitequark>
fused quartz is a pretty good material to work with. very low coeff of expansion, and rather resistant overall
<whitequark>
but as any other glass it'll fragment
<DocScrutinizer05>
yeah, but when it breaks...
<DocScrutinizer05>
exactly
<whitequark>
i had an idea for a fused quartz dinner set
<DocScrutinizer05>
and when hot those lamps have iir 20 or 30 Atm pressure
<whitequark>
instead of dishwashing run it through an oxypropane flame
<DocScrutinizer05>
hehe
<DocScrutinizer05>
nice idea
<whitequark>
have you *seen* how much off the shelf fused quartz costs?
<whitequark>
and custom is going to run a small fortune
<DocScrutinizer05>
sure
<whitequark>
i actually bought a teacup (actually crucible used as a teacup) from fused quartz
<whitequark>
100ml $60 I think
<DocScrutinizer05>
:nod:
<DocScrutinizer05>
sounds about right
<whitequark>
might still consider doing it if i find a vendor, hehe
<whitequark>
but that sounds like custom mold... $$$ even in china
<DocScrutinizer05>
the problem will be: it's too fragile
<whitequark>
it's not very fragile
<whitequark>
I dropped it a bunch of times and I'm 80% sure regular glass would break before that
<DocScrutinizer05>
let it drop and then tell me again ;-)
<DocScrutinizer05>
ooh?
<whitequark>
like I dropped it from ~50cm into the metal sink and it actually *bounced*
<DocScrutinizer05>
wow
<whitequark>
would've defnitely shattered if the sink was ceramic
<whitequark>
stone even?
<DocScrutinizer05>
yeah, I think it's quite strong but zilch elastic
<whitequark>
idea: mill a dinner set from a silicon monocrystal
<DocScrutinizer05>
uiuiuiiiuiiiiuiiii
<whitequark>
same problem really, extremely strong but cannot absorb impact energy
<DocScrutinizer05>
I had the useless endpieces of a silicon monocrystal
<whitequark>
and it has to go somewhere
<whitequark>
oooh
<whitequark>
I actually hope to have a czochralski setup in maybe a year
<DocScrutinizer05>
maybe 3cm diameter on the cut side
<whitequark>
it *could* be used to grow Si although thats not what i need it for
<DocScrutinizer05>
wtf wrong with apt?
<DocScrutinizer05>
~die
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<whitequark>
but only up to 3-5cm in total dia, which means I'm not getting that dinner set :D
<DocScrutinizer05>
:-)
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<whitequark>
it's actually surprisingly simple to make
<whitequark>
and not even that expensive, just 3-4k for the diameter above
<whitequark>
.... if you know the right shop in russia, of course
<DocScrutinizer05>
hmm, looks like it's not *that* trivial to build
<whitequark>
it's not trivial or even very simple at all, it's just surprisingly simple compared to *expectations*
<whitequark>
that is i have not really considered it manageable for 1 person with a modest salary but it is
<DocScrutinizer05>
hmm, silicon melting point 1400°C, OK
<DocScrutinizer05>
not as bad as I thought
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<whitequark>
apart from that I'm getting a furnace capable of 1800°C. I want to play with brazing in inert atmosphere, custom ceramics, stuff like that