<wpwrak_>
that's a switch. but it doesn't look like any we have. maybe the top and bottom connections are case / shield
<nicksydney_>
that's from eagle and was wondering if we have something similar in kicad
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<wpwrak_>
SW4 is relatively similar. has four contacts, though (each side goes to two contacts)
<wpwrak_>
then we have SW-SPDT which is an ON-ON switch. the ON-OFF type is a bit less common nowadays because it's often just as much work to make an ON-ON switch instead
<wpwrak_>
we also have SW-SPDT-S4, which is SW-SPDT plus four shell connections
<wpwrak_>
if you want tacts switches, we have SW_PUSH and FSMRA2JH (contact plus two shell contacts)
<wpwrak_>
i think that's all the switches we have at the moment
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<nicksydney_>
i think will go with SW_PUSH
<nicksydney_>
wpwrak_: this kind of inductor http://ctrlv.in/297630 we don't have but something different right ?
<wpwrak_>
we have an inductor with just two terminals
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<nicksydney>
wpwrak_: this Balun configuration doesn't look correct ( http://ctrlv.in/297644 ) or I'm not correct...the pin 5 is to GND while there is a label 6 connect to GND too ? doesn't seems right
<wpwrak_>
there's also INDUCTOR, without the box
<wpwrak_>
not too uncommon to have multiple ground connections
<DocScrutinizer05>
wpwrak_: "U6"?
<DocScrutinizer05>
wpwrak_: sounds like an active component
<wpwrak_>
ah, that. well, could be. maybe there's more to it than meets the eye :) in which case there should be some label that tells you want chip it is
<wpwrak_>
#s/want/what/
<DocScrutinizer05>
yep
<DocScrutinizer05>
missing context, literally
<wpwrak_>
or maybe the person who picked the component reference U6 just had a strange sense of humor ;-)
<DocScrutinizer05>
in the end a schematics and the symbols used are way less of any "standard" than you might have expected
<DocScrutinizer05>
it's more like an art, with some commonly accepted styles based on common sense
<whitequark>
I'd like to watch cubist schematics
<whitequark>
er, look at
<whitequark>
or postmodernist
<wpwrak_>
the schematics you can actually watch may even be more fun :)
<whitequark>
wpwrak_: take LSD and stare on schematics for, say, motherboard ?
<nicksydney>
was looking around for to learn more about Balun configuration in schematics
<whitequark>
"everything is connected"
<wpwrak_>
whitequark: yeah, something along these lines :)
* whitequark
has learned an important thing today, the warnings against cleaning laser printers with flammable substances are there for a very good reason
<whitequark>
also it still works, that is after I've removed smouldering paper out of it
<nicksydney>
the switch is labelled as U6 on the left sidwe
<nicksydney>
wpwrak_: why balun need to have 2 track running from Pin 5 of the Balun to GND...thought 1 should be enough ?
<wpwrak_>
nicksydney: are you sure it's two separate traces in the layout ?
<wpwrak_>
whitequark: well, if you clean your printer with flammables, at least make sure they have plenty of time to evaporate into the surroundings :)
<nicksydney>
looking at the schematics isn't it ?
<nicksydney>
oh hang on..there is pin5 and 6
<nicksydney>
need to zoom in to see that properly ;)
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<whitequark>
wpwrak_: forgot to turn it off
<whitequark>
rather I *thought* it was turned off
<whitequark>
but it wasn't, and the air stream tripped some switch or somesuch
<whitequark>
resulting in quite entertaining picture with flames erupting out of every hole
<wpwrak_>
;-)
<wpwrak_>
the fact is that it's not because of russian customs that electronic toys don't reach you. what really happens is that they fight all the way against being shipped once they find out you're their destination :)
<whitequark>
lol
<whitequark>
but, so far all the toys have reached me easily!
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<DocScrutinizer05>
whitequark: (galden test) I still can spot some liquid moving along the "corner" of the glass, when tilting and spinning it
<DocScrutinizer05>
soon it will be too spread over the glass surface to spot it anymore
<DocScrutinizer05>
it always looks a bit like a mixture between school first class "I learn to write AAAAA BBBBB..." and a strange reminiscence to windows2.x resp DOS
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<whitequark>
heh. now twitter suggests me to follow almost exclusively heise-related accounts, and google puts the first link to a german page like third of the time
<whitequark>
it's quite creepy
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<whitequark>
ooh, my hotbed magnetic stirrer has arrived
<DocScrutinizer05>
magnetic stirrer, doesn't sound particularly useful for electronics purposes. Rather an equipment for chemical lab
<whitequark>
sure
<DocScrutinizer05>
but hey, maybe makes for a geeky teapot warmer with automatic stirring. Ideal for rock sugar ;-)
<whitequark>
I've got it for etching and preparing other solutions
<whitequark>
mainly for etching though. remember our discussion?
<DocScrutinizer05>
ooh, for preparing solutions it's for sure convenient
<whitequark>
exactly
<DocScrutinizer05>
sure I remember
<DocScrutinizer05>
:-D
<whitequark>
hrm. temperature not adjustable... fixed at 100°C
<DocScrutinizer05>
thought I been able to convince you not to waste money on that
<DocScrutinizer05>
ouch
<whitequark>
ouch indeed
<DocScrutinizer05>
so not even useful for teapots
<whitequark>
well, I'm pretty sure it's adjustable with a spare resistor or something
<whitequark>
:D
<DocScrutinizer05>
who knows
<DocScrutinizer05>
I've seen room heater fans where the fan motor been on a resistive voltage divider built from the heating err wires
<DocScrutinizer05>
extremely nasty and scary design
<whitequark>
ugh
<whitequark>
wow, it is so extermely... soviet in design
<whitequark>
manually soldered lm317 with legs bent *sideways*
<whitequark>
no, I should just take a photo of this
<whitequark>
hmm weird. there's a few patches left on board, which basically don't want to etch
<DocScrutinizer05>
I had a tiny bench vise made in USSR, which been extremely cheap (some 5 deutschmarks) and worked fine, despite the whole thing been covered by filler paste to get it in shape prior to painting it in usual metallic blue
<whitequark>
most of the copper thickness was removed, so it's not surface thing
<DocScrutinizer05>
o.O
<whitequark>
seems kinda like crystals if you look at it at an angle. you know, like zincified steel
<whitequark>
this kind of reflection
<DocScrutinizer05>
copper impurities?
<whitequark>
and it just sits there for 10 minutes already and doesn't etch, despite all other parts etched fine
<whitequark>
well idfk
<DocScrutinizer05>
weird
* wpwrak_
wonders how much longer until you give in and get the HCl ;-)
<DocScrutinizer05>
russian product?
<wpwrak_>
russian chemistry. probably too radioactive. disturbs the chemistry :)
<whitequark>
DocScrutinizer05: nope, MGChemicals
<whitequark>
... same guys who sold me that shitty printer film
<DocScrutinizer05>
I mean the PCB
<whitequark>
exacrly
<whitequark>
*exactly
<whitequark>
etchant is russian
<DocScrutinizer05>
ooh
<wpwrak_>
*giggle*
<whitequark>
wpwrak_: what?
<DocScrutinizer05>
they seem to be experts in fake sub-par quality stuff
<whitequark>
DocScrutinizer05: I even scratched that copper and... newsflash... NOTHING HAPPENS
<whitequark>
like it just sits there with a scratch
<wpwrak_>
"etchant is russian" that explains it :)
<whitequark>
how on earth scratched copper in etching solution is not etching
<DocScrutinizer05>
well, when it's no copper
<DocScrutinizer05>
simple as that
<whitequark>
ok, it's definitely not going to etch
<whitequark>
lemme just throw another chunk of PCB there, even without resist
<DocScrutinizer05>
make MGChemicals eat it!
<whitequark>
I should leave another angry Amazon review
<wpwrak_>
maye sure you scrub off the oxides first
<DocScrutinizer05>
err, depending on etching fluid you usually don't need to worry about oxides
<whitequark>
wpwrak_: I didn't do that and it etches just fine
<wpwrak_>
yes, but since it already acts kinda weird in that role, i'd try to even the odds
<DocScrutinizer05>
it's rather like etching fluid is like very strong flux
<wpwrak_>
ah, good. maybe the other one just had some odd contamination.
<DocScrutinizer05>
impurity, told ya
<whitequark>
wpwrak_: no, I mean at surface
<whitequark>
the other one was just fine at the surface as well
<whitequark>
it's just at the end of etching where the devil hides
<wpwrak_>
with toner transfer, some adhesive residue is often the culprit if something just doesn't want to etch
<DocScrutinizer05>
some bored worker threw his snack wrapper paper on the copper bar before it gone thru the roles thinning it
<wpwrak_>
well, etching is always at the surface. if it's not exposed, it won't get etched :)
<whitequark>
oooh wait, interesting effect
<wpwrak_>
now comes the cold fusion
* wpwrak_
turns on CNN
<whitequark>
I think I figured it out
<whitequark>
the etchant is too concentrated
<DocScrutinizer05>
or even a beer bottle lid
<larsc>
the cold fusion?
<DocScrutinizer05>
LOL
<whitequark>
in fact it is concentrated enough that when I place a board in it, the etchant *crystallizes on the board*
<wpwrak_>
quick, describe it before the radiation kills you
<whitequark>
literally, there appear hard white crystals on the surface
<whitequark>
obviously preventing any more access to the copper
<DocScrutinizer05>
that's kinda same effect as with acid in steel tank
<DocScrutinizer05>
old news
<whitequark>
and if I wash it under tap water, they just wash away, meaning they're water-soluble
<whitequark>
DocScrutinizer05: passivation is a different effect
<whitequark>
but I see what you mean
<DocScrutinizer05>
slightly
<DocScrutinizer05>
the copper salt created from copper and etchant still needs to be able to solve in the liquid
<DocScrutinizer05>
in a saturated solution this will probably fail
<DocScrutinizer05>
btw you're not supposed to use 99% alcohol for desinfection. Kinda for same reasons
<DocScrutinizer05>
bacteria just dehydrate and survive
<whitequark>
oooh you're right
<whitequark>
could be CuSO4
<whitequark>
instead of etchant
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<whitequark>
or even a mixture of both
<whitequark>
it surely looks like copper crystals...
<wpwrak_>
with HCl + H2O2, you can tell simply by the color if the chemistry is right :)
<whitequark>
"if your face is blue, you're doing it just right?