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2014-05-13 01:48 <nicksydney> guess so :)
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2014-05-13 07:18 <viric> Auhm
2014-05-13 07:18 <viric> reading about mk802iv
2014-05-13 07:18 <viric> they say: Create a RFS in NAND by entering "mkfs.ext4 /dev/mtdblock0"
2014-05-13 07:18 <viric> isn't this a bit crazy?
2014-05-13 07:20 <whitequark> #yolo
2014-05-13 07:21 <viric> yolo?
2014-05-13 07:23 <whitequark> http://www.urbandictionary.com/define.php?term=Yolo
2014-05-13 07:24 <viric> ah
2014-05-13 07:24 <viric> so you agree on the ext4 on mtdblock being a bit crazy :)
2014-05-13 07:24 <whitequark> exactly
2014-05-13 07:24 <whitequark> well, *maybe* it's ok if you have a NOR flash
2014-05-13 07:25 <viric> these explain the same: http://linux-rockchip.info/mw/index.php?title=Linux_on_NAND
2014-05-13 07:25 <whitequark> (maybe because placing an ext4 fs on a nor flash seems a bit pointless)
2014-05-13 07:26 <viric> the same, I mean, put ext4 on nand :)
2014-05-13 07:27 <whitequark> ahh, mtdblock has an underlying FTL: http://www.linux-mtd.infradead.org/faq/general.html
2014-05-13 07:28 <viric> hm better than nothing
2014-05-13 07:29 <viric> "And don't try to use it on NAND flash as it is does not handle bad eraseblocks. "
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2014-05-13 07:50 <wpwrak> hmm, to use Xn...Xnn component references or to use Xsnn, this is the question. where X is R, C, U, etc., s is the sheet number, and n the component's number.
2014-05-13 07:51 <wpwrak> pro Xsnn: you can tell by the component reference on which sheet to look. contra: references get long.
2014-05-13 08:00 <nicksydney> wpwrak: http://www.scorchworks.com/Blog/hot-glue-injection-molding/
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2014-05-13 08:08 <wpwrak> beat !
2014-05-13 08:08 <wpwrak> #s/b/n/
2014-05-13 08:10 <larsc> viric: yea, you should probably put a ubi layer between the mtd device and ext4
2014-05-13 08:11 <larsc> http://www.linux-mtd.infradead.org/doc/ubi.html
2014-05-13 08:12 <wpwrak> now ... hot glue guns seem to work with temperatures in the range 95-140 C. acrylic melts at 160 C. perhaps the mold doesn't even have to be metal then.
2014-05-13 08:12 <viric> larsc: and an ubifs
2014-05-13 08:12 <viric> why would I want ext4?
2014-05-13 08:13 <viric> does ubifs scale well to 16GB?
2014-05-13 08:13 <larsc> viric: if you want to use ext4 no ubifs
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2014-05-13 08:13 <whitequark> wpwrak: I'm afraid you'll have a hard time separating hot glue from acrylic
2014-05-13 08:13 <viric> no no, I don't care about the fs.
2014-05-13 08:13 <whitequark> although... I can probably even test that
2014-05-13 08:13 <viric> I'm just surprised the instructions I've found suggest to use ext4 over mtdblock
2014-05-13 08:14 <nicksydney> hopefully with Novena the days of cheaper oscilloscope is near :)http://hackaday.com/2014/05/09/bunnies-laptop-gets-a-900mhz-scope-addon/
2014-05-13 08:14 <larsc> viric: To be honst I don't know if there are advantages by using ext4 rtaher than ubifs, but if I had to guess I'd say no
2014-05-13 08:14 <wpwrak> whitequark: would be interesting. my hot glue experiments so far ended with the CCC glue gun overheating :-(
2014-05-13 08:16 <wpwrak> i wonder how much longer we'll have to read about miracle scopes with sky-high analog bandwidth and ridiculous sample rates :-(
2014-05-13 08:17 <wpwrak> i mean 1-2 GSPS is quite alright for a few hundred MHz, but 900 MHz analog bandwidth is just an absurd claim
2014-05-13 08:21 <wpwrak> the concept is nice, though. also the way he does probes.
2014-05-13 08:22 <wpwrak> whitequark: there are also all sorts of mold release that reduce stickiness. e.g., you could try olive oil. that should be good until about 190 C.
2014-05-13 08:28 <whitequark> hmmm
2014-05-13 08:33 <wpwrak> the nozzle may get a bit too hot, so you'd have to plan on having some room on the acrylic that can be melted
2014-05-13 08:35 <wpwrak> plan B: use wood. that plays nicely even with molten lead. one drawback is its porosity. wood + glue could be a bit of a challenge for the mold release :)
2014-05-13 08:35 <whitequark> nope, just put it in water
2014-05-13 08:35 <whitequark> (but that makes mold essentially usable once)
2014-05-13 08:35 <whitequark> honestly at this point I'm not sure if that glue is good for anything at all
2014-05-13 08:36 <wpwrak> have you tried it ?
2014-05-13 08:36 <whitequark> it doesn't stick very well to anything and even if it sticks moderately well, water makes it just fall away
2014-05-13 08:36 <whitequark> yes
2014-05-13 08:36 <whitequark> well, not for molds, for fixing stuff
2014-05-13 08:36 <wpwrak> well, that sounds perfect for molding ;-)
2014-05-13 08:36 <whitequark> but what would you use the molded parts for?
2014-05-13 08:36 <wpwrak> russian anti-stick glue, designed for DIY molding ;-))
2014-05-13 08:37 <wpwrak> cases ? prototypes ?
2014-05-13 08:37 <whitequark> uhh, cases? out of that rubbery shit?
2014-05-13 08:38 <wpwrak> doesn't it get fairly hard after a while ? hard enough for not overly demanding things as least
2014-05-13 08:38 <whitequark> not really, it's always kinda rubbery
2014-05-13 08:38 <whitequark> think very slightly harder than household silicone stuff
2014-05-13 08:38 <whitequark> although you may conceivably do a case for something waterproof if you make two molded parts and then fuse them together with heat
2014-05-13 08:38 <whitequark> but that last part sounds quite error-prone and hard to get right reliably
2014-05-13 08:39 <whitequark> perhaps if you get sticks out of something else than LDPE, say, I dunno, HDPE or PP, it would be much better
2014-05-13 08:39 <whitequark> but I'm unaware of where to get them
2014-05-13 08:42 <whitequark> whoa, there's like two dozen kinds of those sticks: http://www.alibaba.com/product-detail/translucent-hot-melt-glue-stick_549142428.html?s=p
2014-05-13 08:43 <whitequark> http://www.alibaba.com/product-detail/strong-sticky-hot-melt-glue-for_878903737.html glue for WHAT?
2014-05-13 08:44 <whitequark> "hot melt adhesive to be used on Mouse, fly, mosquitos and insect caputuring. "
2014-05-13 08:44 <whitequark> ...
2014-05-13 08:44 <whitequark> how exactly they imagine this working?
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2014-05-13 08:47 <whitequark> wow, I could never imagine there are SO MUCH different hot melt glues
2014-05-13 08:50 <whitequark> also, it appears that the regular sticks are EVA and not LDPE, though I did find pics of some LDPE sticks and now I know what that *really horrible really low quality* stick set was made of
2014-05-13 08:58 <wpwrak> (mouse capturing) easy: locate mouse, trap mouse, heat up glue, hold down mouse and dispense glue over mouse
2014-05-13 08:59 <wpwrak> and yes, there seems to be a lot of choices. apparently, the most common ones around here are made of silicone. so they're quite flexible.
2014-05-13 08:59 <whitequark> silicone?!
2014-05-13 08:59 <whitequark> seriously?
2014-05-13 09:00 <whitequark> I mean, to me it looks like they just want to call it "silicone" for some reason, it's not the actual matierla
2014-05-13 09:00 <whitequark> *material
2014-05-13 09:01 <whitequark> e.g. I was so far unable to locate anything on alibaba that was *actually* made out of silicone
2014-05-13 09:01 <whitequark> and not just "Silicone Hot Glue Stick / Material: EVA"
2014-05-13 09:02 <whitequark> like this: http://www.alibaba.com/product-detail/hot-melt-silicone_905474047.html
2014-05-13 09:02 <wpwrak> could be. though according to wikipedia, silicone exists in that role
2014-05-13 09:02 <whitequark> Main Raw Material: EVA,Eva ,Resin, Paraffin
2014-05-13 09:02 <whitequark> I'm sure it exists, I doubt it's actually sold in that form-factor
2014-05-13 09:09 <whitequark> apparently the most common industrial application of EVA glue is... diapers?
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2014-05-13 09:33 <wpwrak> and i felt bad for the hot-glued mice ...
2014-05-13 09:34 <wpwrak> btw, i managed to unclog my "dead" gun. seems that some ait gap may have formed that prevents the bar from heating
2014-05-13 09:34 <wpwrak> but ... i need to get larger bars. the ones they sold me where i bought the pistol aren't really compatible
2014-05-13 09:40 <wpwrak> there are also completely clear ("crystal") ones in the local market. interesting.
2014-05-13 09:42 <whitequark> any slightly blue-tinted ones? :D
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2014-05-13 09:45 <wpwrak> maybe if you melt them, mix in some paint, then extrude them back to bars :)
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2014-05-13 10:15 <nicksydney> wpwrak: http://www.st.com/web/en/catalog/tools/PF259562?ecmp=pf259562_enews_stnews_may2014&sp_rid=NjkwODI0MTY0NjkS1&sp_mid=8865405 another "Bluetooth SMART" :)
2014-05-13 10:19 * whitequark salivates at http://www.ebay.com/itm/360839272295
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2014-05-13 10:22 <nicksydney> whitequark: nice indeed
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2014-05-13 12:43 <wpwrak> whitequark: cute :)
2014-05-13 12:43 <wpwrak> nicksydney: and yet another closed architecture :)
2014-05-13 12:43 <wpwrak> nicksydney: you need to apply that filter first. there's tons of chips but almost all of them unsuitable because of lack of documentation
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2014-05-13 13:04 <wpwrak> whitequark: did you try to make mold ? (of acrylic)
2014-05-13 13:38 <viric> whitequark: this can hurt, if you bring it on your pockets
2014-05-13 13:45 <qi-bot> [commit] Werner Almesberger: modules/sod.fpd: added SOD-323 (master) http://qi-hw.com/p/kicad-libs/083e2b0
2014-05-13 13:48 <whitequark> wpwrak: not really, my CNC still doesn't work
2014-05-13 13:48 <whitequark> (I've been busy with the day job lately)
2014-05-13 13:49 <wpwrak> (cnc) oh, did it come up with new surprises ? how generous of it :)
2014-05-13 13:49 <wpwrak> well, s/surprises/challenges/  :)
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2014-05-13 13:50 <whitequark> wpwrak: nothing cnc-specific, the ages old hard drive just died
2014-05-13 13:51 <whitequark> I almost assembled together a replacement (had to use a SATA-IDE adapter), but I don't have a SATA data cable atm
2014-05-13 13:51 <whitequark> need to buy it
2014-05-13 13:51 <wpwrak> oh. time to make the DIY controller ?
2014-05-13 13:52 <whitequark> no, time to buy a cable
2014-05-13 13:52 <whitequark> I'm almost entirely satisfied with EMC2
2014-05-13 13:52 <wpwrak> damn :)
2014-05-13 13:53 <whitequark> one thing at a time, wpwrak, one thing at a time :)
2014-05-13 13:53 <wpwrak> yeah, i was hoping to catch you at the moment when you hate everything EMC2 does simply because it's unfamiliar, and make a nice little controller solution
2014-05-13 13:54 <whitequark> :D
2014-05-13 13:54 <whitequark> I never really hated any part of EMC2 except for the LPT port thingy
2014-05-13 13:54 <wpwrak> now that this moment has passed, i'll have to wait for someone else before i can try that again ...
2014-05-13 13:54 <whitequark> it's a great little project
2014-05-13 13:54 <whitequark> and far ahead any kickstarter shit that can't even interpret gcode properly
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2014-05-13 17:49 <roh> linuxcnc was bright enough to let the nist pay for developing the gcode interpreter ;)
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