#qi-hardware IRC log for Friday, 2014-03-14

DocScrutinizer05AL03. mhm03:19
DocScrutinizer05I'd say every human not deaf should be able to hear the difference in sound when the pump gets blocked03:20
DocScrutinizer05anyway objects in pump are most common problem of dishwashers. You can't imagine the way people treat their dishwashers. Like if they had no waste bin. peas and toothpicks are only the more non-exciting things to find in blocked pump03:22
DocScrutinizer05btw usually the water goes out easily when you simply lower the exhaust hose below the level of the inner tubing of the dish washer03:24
DocScrutinizer05I've seen people placing ther dishwasher on top of e.g. fridge, so the hose went strauight down direction kitchen sink. Then they wondered why no water stays in dishwasher, or rather "why doesn't it work?"03:26
DocScrutinizer05btw the pump's motor design is kinda funny, with just a AC magnet around a plastic tube with some magnetic rotor inside. Obviously it has no dedicated direction it will spin towards03:29
DocScrutinizer05suboptimal efficiency but ultra-simple design :-D03:30
DocScrutinizer05usually any problematic object shouldn't be able to pass the filter. So first of all check if the filter fits tightly without bypass where a toothpick or pear or chicken bone can pass through03:32
wpwrakrugged design :)03:32
wpwrakyeah, no idea how it got past03:32
DocScrutinizer05strings are nasty03:32
DocScrutinizer05or plastic foil stripes03:33
DocScrutinizer05they wrap around the "propeller" of the pump03:33
DocScrutinizer05btw absolutely same problem in many washing machines03:34
DocScrutinizer05just usually no toothpics but mostly coins that block the pump03:34
wpwrakhehe :)03:34
wpwrakso you worked in household appliances service for a while ? :)03:35
DocScrutinizer05honestly people not even removing coarse remnants from dishes before placing those dishes into dish washer makes me angry03:36
DocScrutinizer05wpwrak: I did almost all that is somehow related to electricity or technics at large03:36
DocScrutinizer05In TV I seen nerds preparing their salmon in a plastic bag inside the dish washer :-)03:42
Action: DocScrutinizer05 idly wonders if changing POP port of MX would cause any problems03:44
DocScrutinizer05obviously I can't change SMTP port03:44
DocScrutinizer05but at least those lines:03:45
DocScrutinizer05 pam_unix(pop:auth): authentication failure; logname= uid=0 euid=0 tty= ruser= rhost= 03:45
DocScrutinizer05 pam_succeed_if(pop:auth): error retrieving information about user daniel03:45
DocScrutinizer05I rather would like to get rid of03:45
DocScrutinizer05sometimes 100s of kB per day03:46
DocScrutinizer05and I can't find a way to block those by fail2ban, IP missing in logs03:47
DocScrutinizer05damn cyrus03:48
wpwrakif you change the SMTP port, you'll get a lot less spam :)03:59
DocScrutinizer05but POP should be fine, no? just like ssh04:01
DocScrutinizer05maybe I should open the telnet port as honeypot?04:03
DocScrutinizer05and the regular port 2204:04
wpwrakpop depends on who else uses it. if you're alone or all your users are good enough with technology to adapt whatever they use, sure04:04
DocScrutinizer05yep, alone04:04
wpwrakleave telnet open and they'll think it's a cisco ;-)04:05
DocScrutinizer05and then cyrus, go figure!04:05
DocScrutinizer05that's what you get when professional sysops set up your box04:06
DocScrutinizer05cyrus for one mail account, and a cms for one webpage04:06
DocScrutinizer05nah, I got no cms there, at least that04:07
whitequarkDocScrutinizer05: should've used a peristaltic pump!09:51
whitequark\o/ galden arrived to my post office11:07
wpwraktime to ready the bathtub12:00
DocScrutinizer05time for BBQ12:56
Action: DocScrutinizer05 HMMM's @ http://www.koreaittimes.com/images/imagecache/large/opticaltrackpadmodulesamples.JPG12:57
DocScrutinizer05http://www.koreaittimes.com/images/imagecache/large/optical trackpad module samples.JPG12:58
Action: DocScrutinizer05 HATES fools adding spaces to URLs12:59
nicksydneyinteresting http://yurichev.com/writings/RE_for_beginners-en.pdf13:20
wpwrakzrafa: btw, how are the libswd experiments going ? have you been able to make contact ?14:29
zrafawpwrak: hehe.. many experiments.. all were bad news. But the good news is that we still continue trying :)16:12
zrafawpwrak: we tested sie+ubb and libswd.  16:12
zrafawpwrak: against our little experimental board with mk2016:12
zrafawpwrak: using the debug option in libswd we just GOT ACK 7 ... like if every answer from mcu are all 1s. (the 3 bits as ack it should send)16:14
zrafawpwrak: your code sends the proper "code" to change "jtag to swd" in mk20. I read the 16 bits from manual reference16:15
zrafaof mk2016:15
zrafato switch from jtag to swd16:15
zrafawpwrak: the good news are that kl26 is pin compatible with the mk20 we have. So we are making a new little test board with a mkl26, to try to test your software and verify that it works, then we can be sure that our board is okey at least. Then, after that (if that is succefull) to continue with mk20 and to try to understand why mcus is not working for us16:17
wpwrakack 7 means that the chip doesn't even notice you're talking to it :(16:19
zrafawpwrak: yeah :(16:19
wpwrakbut good idea to try the kl26. eliminates possible "stupid" incompatibilities16:20
zrafawpwrak: maybe the reset sequence is different. If I understand correctly is that we need to switch from jtag to swd in mk20. But in kl26 you just have swd right?16:20
wpwrakhmm, could be. but in any case i'm sending the switch sequence16:22
zrafayes, I read it and it is okey for the mk2016:23
zrafawpwrak: btw, which endian is this thing?16:24
whitequarkwohoo, got galden back from post office16:25
whitequarkwhoever placed that office must be a huge jerk who likes to watch people suffer.16:25
wpwrakzrafa: little-endian16:27
wpwrakwhitequark: how many wolves did you have to shoot ?16:27
whitequarknone, but I was a little uncomfortable in three busses with a package with the value clearly declared on the outside of it.16:29
whitequarkhm, I seem to have hit some kind of delivery jackpot. another package incoming in an hour16:30
whitequarkwpwrak: regarding that MDF-based, um, equipment from yesterday. it seems that retrofitting my CNC to use some other head except whatever it uses right now will be problematic16:33
whitequarkit's too monolithically built for any replacement to work16:33
whitequarkso I thought about building a platform with changeable heads for the cases where the frame must not withstand significant stress of cutting16:33
whitequarkhopefully also much cheaper16:34
whitequarkyou'd need... MDF, ballscrews, rails, a few screws and that's it I think?16:34
zrafawpwrak: these are our little test home uni made boards : http://fz.hobby-site.org/hp660lx/freescale/16:41
wpwrakzrafa: hehe, cute :)16:43
whitequark(and then wpwrak asks me why do I want solder stop_)16:44
wpwrakwhitequark: ball screws sound fancy16:44
whitequarkwpwrak: hmm? what would you use for a CNC?16:44
wpwrakwhitequark: well, it's just a fixed platfornm, isn't it ?16:45
whitequarkwhat do you mean by 'fixed' ?16:45
whitequarkrails are there for holding load. ballscrews are the linear actuators for moving it, one that have practically no backlash16:46
wpwrakso you'd replace the whole Z axis ? incl. stepper ?16:49
whitequarkno, I mean I want to build an entirely another machine, with properly changeable heads but on much weaker (also cheaper/easier to work with) frame16:49
whitequarkplus I'd get to fail quite a bit more while doing that. failing is always fun16:50
wpwrakoh, i see :)16:50
whitequarkthe need to make a frame out of aluminium deters me. but mdf is definitely something I can handle now16:51
whitequarkso that was a nice idea16:52
wpwrakyeah, mdf is easy16:52
wpwrakmaybe also consider acrylic, especially if things can get wet16:53
whitequarkhmm, maybe just cover mdf with urethane varnish?16:53
whitequarkacrylic tends to fracture16:54
whitequarknot to mention thick acrylic can get quite pricey16:54
wpwrakif you need that kind of strength, maybe buy an old tank, then strip it ?16:55
whitequarkstrength? no, not strength. I think it can be nontrivial to make holes in acrylic so that it doesn't shatter16:56
whitequarkor do you mean thickness?16:56
wpwrakas long as you drill/mill them, that should be alright. if you insist on using a gun to make the holes, the story may be different, though16:58
whitequarkno no, that would be DocScrutinizer05's specialty16:59
DocScrutinizer05using a gun for holes in acrylic is just a matter of caliber and bullet velocity17:25
DocScrutinizer05there's little a carefully crafted impact of a specially designed projectile can't do. even greate cups in alu blocks: 8mm steel ball projectile @ 28000m/s17:27
DocScrutinizer05or use explosives. I heard they can create nearly perfect little (~1mm or smaller) holes even in glass17:29
DocScrutinizer05though a projectile caliber of <0.5mm at *really* high velocity will work all the same17:30
DocScrutinizer05prolly use tungsten carbide for that one17:31
DocScrutinizer05right mass and hardness17:32
whitequarkwhy am I not surprised?//17:40
DocScrutinizer05oops, 23000FT/s18:09
DocScrutinizer05not meters18:10
DocScrutinizer05http://www.spudfiles.com/miniature-cannon-database/topic21636.html :-D18:13
virickyak: paul advices are enough by now18:20
viricI think we can take that it works18:21
viricI didn't have any reason to think that gpg wouldn't work18:21
DocScrutinizer05whitequark: WUT? Russia and Krim call maidan demonstrants fascists and then invite Front Nationale and other oltra-conservative nationalist neofascist parties from whole Europe for referendum observers?18:28
DocScrutinizer05makes really a LOT of sense ยก :-/18:29
DocScrutinizer05Putin is a zynical asshole, telling he's concerned about safety of Russian people in Ukraine and particularly Krim, then we see those Russian people beat up and kill pro-ukrainian demonstrants at Krim. And now this new idiocy of turning stuff into the diametral opposite with inviting fascist vote observers18:31
zrafawpwrak: no luck with kl26 :(18:32
zrafawpwrak: what could be wrong?? :(18:32
zrafawpwrak: we have connected 3.3V, GND, SWD_CLK SWD_IO and RESET18:36
zrafaI am testing with ben and ubb, no sie18:36
DocScrutinizer05whitequark: ooh, Russia block internet news portals that don't tell the right "truth"19:08
DocScrutinizer05well, seems I heard about that some years ago already, so no surprise. And suddenly I know where from the Trukish idiot got that idea19:09
DocScrutinizer05old stupid totalitarian method of controlling the masses shows its inferiority vs the western new nifty method to even better control the masses19:11
wpwrakzrafa: hmm ... do you have a scope ? if yes, the would be the moment to get it out ...20:20
DocScrutinizer05shameless commercial: http://neo900.org/news-0009-progress-update-march22:24
wpwrakneat ! about the samsung thing, isn't it sweet when the competition does all the advertizing for you ? ;-)22:32
DocScrutinizer05yep, indeed :-P22:33
DocScrutinizer05maybe I should contact Marin of Zeit-online, her article about Neo900 still missing22:34
zrafawpwrak: my WWII scope which rodo gave me23:59
--- Sat Mar 15 201400:00

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