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2016-04-24 13:25 <eintopf> they told the most are in african
2016-04-24 13:25 <eintopf> and it's difficult to get them because war
2016-04-24 13:25 <eintopf> another question
2016-04-24 13:25 <eintopf> what are the benefits exactly smd led and a normal led
2016-04-24 13:25 <eintopf> except the form factor
2016-04-24 13:26 <whitequark> eintopf: there's the congo minerals
2016-04-24 13:26 <whitequark> but congo doesn't contain *most* tantalum, neither it even supplies the majority of it used today
2016-04-24 13:26 <whitequark> typical telly fud
2016-04-24 13:27 <whitequark> and there's no difference except the form factor
2016-04-24 13:27 <eintopf> http://uclu.org/sites/uclu.org/files/cfci_image_1_copy.jpg
2016-04-24 13:27 <eintopf> ahh
2016-04-24 13:28 <eintopf> yea, but mean "bloody hands" in this case because the situation
2016-04-24 13:29 <eintopf> how to get the resource, child work, not safety
2016-04-24 13:29 <eintopf> now I never wants to buy a new smartphone
2016-04-24 13:30 <eintopf> and the google guy already laughed about me because I have currently an old nexus 4
2016-04-24 13:30 <eintopf> ...
2016-04-24 13:30 <eintopf> with half broken display
2016-04-24 13:30 <whitequark> that picture is bullshit
2016-04-24 13:30 <whitequark> just like anything else with extraordinary claims and no sources
2016-04-24 13:31 <eintopf> http://ddc.arte.tv/folge/mobiltelefonie-2-2-die-dunklen-seiten
2016-04-24 13:31 <eintopf> I saw this documentation
2016-04-24 13:31 <eintopf> but it's in german
2016-04-24 13:32 <eintopf> they told the same, it's like blood diamonds but they name it blood minerals
2016-04-24 13:32 <whitequark> I don't know german unfortunately
2016-04-24 13:32 <eintopf> :(
2016-04-24 13:32 <whitequark> yes, blood minerals, conflict minerals, etc, are a problem that exists
2016-04-24 13:32 <whitequark> DRC coltan is the major manifestation
2016-04-24 13:33 <whitequark> however, there are regulations in place in EU and US that require tracking the supply chain of coltan, likewise with diamonds
2016-04-24 13:33 <eintopf> I see
2016-04-24 13:33 <whitequark> so saying that iphones rely on conflict tantalum is incorrect
2016-04-24 13:33 <eintopf> ahh
2016-04-24 13:33 <eintopf> okay
2016-04-24 13:33 <whitequark> what *is* correct is that iphones are assembled on a foxconn factory with ~400 suicides per year
2016-04-24 13:34 <eintopf> ok
2016-04-24 13:34 <whitequark> well, probably lower now, since there was an outrage over this, but I doubt the conditions there improved all that much
2016-04-24 13:35 <eintopf> ok.
2016-04-24 13:36 <eintopf> and another question about wire, I have some of these magnetic wire
2016-04-24 13:36 <whitequark> you mean varnish-covered magnet wire?
2016-04-24 13:36 <eintopf> I need to google it, wait
2016-04-24 13:36 <eintopf> yes
2016-04-24 13:36 <eintopf> it looks exactly like that, when I solder at the line the isolation will be gone
2016-04-24 13:37 <whitequark> I recommend clearing the varnish before soldering, it can interfere with forming of the joint
2016-04-24 13:37 <eintopf> but I think it has a different name
2016-04-24 13:37 <whitequark> burn it off with cigarette lighter. sandpaper also works in a pinch, but much slower
2016-04-24 13:38 <whitequark> it's also called "transformer wire"
2016-04-24 13:38 <eintopf> can I use that wire also when it lays inside a electric cicruit?
2016-04-24 13:38 <whitequark> "inside"?
2016-04-24 13:38 <eintopf> on some board components, etc
2016-04-24 13:38 <whitequark> yes
2016-04-24 13:38 <whitequark> keep in mind that sharply bending it will flake off the varnish
2016-04-24 13:39 <eintopf> ah, not bending it. Ok
2016-04-24 13:39 <whitequark> for a thin hookup wire, I recommend PTFE-coated wire
2016-04-24 13:39 <whitequark> multistrand
2016-04-24 13:39 <eintopf> and these are so small, I could use them directly @ smd led
2016-04-24 13:41 <eintopf> or should I use "kynar wire"
2016-04-24 13:41 <eintopf> mhh
2016-04-24 13:41 <eintopf> because all people use kynar wire
2016-04-24 13:42 <whitequark> kynar is another fluorinated polymer
2016-04-24 13:42 <whitequark> should be at least as good as PTFE
2016-04-24 13:42 <whitequark> so go ahead
2016-04-24 13:43 <whitequark> pvdf (kynar) to ptfe is what pvc is to pe
2016-04-24 13:44 <eintopf> ok.
2016-04-24 13:45 <whitequark> generally... all fluorinated polymers offer excellent physical and chemical resistance
2016-04-24 13:46 <whitequark> as long as cost allows i always prefer them
2016-04-24 13:59 <roh> is pvdf also self-lubricating?
2016-04-24 14:00 <roh> like ptfe and pom :)
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2016-04-24 14:30 <whitequark> no idea here
2016-04-24 14:31 <whitequark> looks like not
2016-04-24 15:36 <DocScrutinizer05> ((foxconn factory with ~400 suicides per year)) they mounted nets so jumping out the window doesn't work anymore for suicide
2016-04-24 15:37 <DocScrutinizer05> dunno if they also did anything else to actually improve the situation, prolly not
2016-04-24 15:57 <whitequark> I think they made some minor concessions
2016-04-24 15:57 <whitequark> but that doesn't really change anything
2016-04-24 15:57 <whitequark> DocScrutinizer05: btw, import feature almost ready to ship...
2016-04-24 15:57 <whitequark> in solvespace
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