#robotics | Logs for 2016-07-24

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[00:02:35] <codepython777> Buggs: thanks
[01:38:27] <Snert> vexpro has some nice looking stuff. Wish it was real pics
[03:17:09] <z64555> hm, seems the "best" way to sharpen a pair of dikes is to take them to a bench grinder and grind away the backside
[03:19:29] <z64555> trying to grind away from the front is slow, tedious, especially if you've got some decent steel
[03:20:44] <theBear> the err, whaddyou mean by the term dike exactly ?
[03:22:29] <z64555> http://1.bp.blogspot.com/-HaBwviwmzoQ/UtAgoT11wqI/AAAAAAAAAPk/HyDPHdG8iLY/s1600/Side_cutters.jpg
[03:25:41] <theBear> heh, howbout that ... where in the world they called taht at ?
[03:25:53] <z64555> Southern Texas, at least
[03:26:55] <z64555> probably common in the Americas
[04:07:06] <theBear> heh, you crazy foreigners and your slightly different terms for a very small % of things !
[04:07:43] * theBear tries to look excessively xenophobic to avoid being talked at by anyone different to how he is
[04:31:34] <z64556> hm, the tubes seem to be busted
[04:31:46] <z64556> orrr. perhaps my IP changed
[04:37:26] <theBear> heh, the ladies are always saying that pair of things to me it seems, or err, never, i mean never, not always, wow, that was close !
[15:35:21] * SpeedEvil ponders walking shed again.
[15:36:31] <deshipu> walking doesn't work that well at this scale
[15:36:53] <veverak> hmm
[15:37:11] <veverak> .scad to .urdf is more annoying than I thought
[15:40:32] <z64555> walking shed?
[15:41:05] <deshipu> https://geoffmead.files.wordpress.com/2012/06/baba-yaga-house.jpg
[15:41:51] <z64555> likely more trouble than what it's worth
[15:42:44] <z64555> could go with a quad or hex platform
[15:43:18] <deshipu> baba yaga disagrees
[15:45:13] <z64555> well, yeah, but baba yaga's house uses disembodied legs from a monster chicken
[15:45:55] <z64555> organic motor systems are higher mainetnance than inorganics
[15:46:43] <veverak> are they?
[15:46:55] <veverak> I thought that they tend to be fully self-mainentance
[15:47:15] <z64555> still gotta supply water, nutrients to them
[15:47:33] <deshipu> at least they are self-healing
[15:48:09] <deshipu> z64555: actually oxygen is the hard part
[15:48:34] <z64555> it's part of the blood transport system
[15:49:21] <z64555> aw jeez, now you done made me seriously think about cybernetics
[15:50:16] <deshipu> so sorry
[15:50:53] <deshipu> I guess inwertebrae would be easier
[15:50:59] <z64555> ideas about a "continous" lung
[15:51:12] <deshipu> insects basically just bathe in the oxygen-rich fluid
[15:51:19] <z64555> how organic lungs are self-cleaning to a degree
[15:52:41] <z64555> cybernetics is like, a forbidden field of engineering
[15:52:44] <deshipu> it's very hard and expensive nowadays to build anyting with mechanical parts that doesn't need maintenance once a year or such
[15:52:58] <z64555> oh B.S.
[15:53:33] <z64555> most consumer goods today are built to fail within a certain timeframe
[15:53:36] <deshipu> I have a friend who does maintenance on wind stations
[15:53:47] <deshipu> and solar panels
[15:54:07] <z64555> so you can buy the latest and greatest product instead of trying to supply refurb kits to update the old products
[15:54:31] <deshipu> there is a reason why voyager cost so much
[15:55:45] <deshipu> (apart from the fact of surviving outside Earth's magnetosphere)
[15:56:23] <z64555> that's likely due to design decisions, tight tolerances of materials
[15:56:41] <z64555> weight specifications
[15:57:24] <z64555> survivability from micro-meteors
[15:57:36] <z64555> and debris
[15:57:49] <z64555> all sorts of stuff
[15:58:31] <z64555> also, voyager is not a consumer product
[15:58:33] <z64555> :)
[15:59:21] <deshipu> right, nobody even tries that with consumer products, beacause it's so much cheaper to just fix/replace them periodically
[16:00:06] <veverak> yeah
[16:00:17] <veverak> I guess nature is not exactly ahppy about it
[16:00:32] <z64555> cheaper in terms of engineering design, not necassarily material cost
[16:01:54] <z64555> Some of the first home PC's use dual-inline chips. So when a new chip came out you could pull out the old chip and put in the new one
[16:02:25] <z64555> possibly a carry-over from the vacuum tube days, which had a notorious life time cycle
[16:03:11] <deshipu> well, I think CPUs still come in sockets
[16:03:24] <veverak> yeah
[16:03:32] <veverak> but socket lasts usuall for two generations at max
[16:03:34] <veverak> :0
[16:03:35] <deshipu> which makes little sense, since each new generation requires a different socket
[16:03:36] <veverak> :)
[16:03:44] <z64555> pretty much.
[16:03:56] <veverak> and things in IT lost support a much
[16:04:03] <z64555> Here, though, the socket is to allow cheaper grades of the CPU family to use with the same circuit board
[16:04:13] <veverak> that's one thing I like about app I work on...
[16:04:25] <veverak> it's perl application with 10year+ in development
[16:04:26] <deshipu> veverak: bit rot?
[16:04:32] <veverak> and it's still actively developet
[16:04:34] <veverak> and it's nice
[16:05:17] <z64555> The cheaper CPU's of the same family are sometimes the same chip design, but with some portions of the chip that are burnt out or otherwise not up to spec's of the other modules
[16:05:35] <z64555> part of the reason why overclocking is popular
[16:45:13] <theBear> nah, overclocking is popular cos of greed, the way things are manufactured and q-a'd and binned just makes some room for the whole overclocking thing to work, sometimes quite beyond what one expects
[16:46:22] <theBear> but pfft, back when you might add an extra 25 or even 50% to raw cpu clock rate and even associated buses and other stuff that is divded off the main clock that was a serious boost, but these days adding even a few hundred mhz on top of a few ghz * maybe 2 or 4 teeny cores, it ain't such a big payoff
[16:47:26] <theBear> that's what theBear says, and that's what he's always said, since a point in history where everything was in place for it to make any sesne at all of course :)
[16:47:34] <mumptai> i once had celeron-a 300MHz running stable at 450MHz
[16:47:39] <theBear> didn't really apply before the stuff it mentions yaknow, existed
[16:49:31] <theBear> mmm, i had a k6-2 somewhere in that kinda area and sitting around 440something when i finally settled with stability but still a good chunk of overclockyness involved, adn that machine ran flawlessly without any real changes at all for MANY years, often 24/7 after that, overclock -> success is what i said to myself the last time i saw the old err, battleaxe of a thing
[16:51:08] <mumptai> but that stuff is decades ago
[16:53:04] <theBear> your face is decades ago ! my production/live net server in the next room is gettin' damned close to 2 decades old in the mobo and hd dept's, and that poor old thing has literally served up all kinds of crap for me on tiny resources year after year with nothing more than the occasional psu fan or recap==replace psu and sortout details later, i often praise it for just kicking so much ass with so little fuss !
[16:53:53] <theBear> dig fucking.rememberit.com.au @ns.rememberit.com.au or so and once the 6gb mirror spins up feel the awesome power of coppermine 1ghz topped up with the max possible half a gb of pc100 ram !
[17:05:53] <mumptai> 5 years ago i replaced my last pentium-100 router with some fritzbox
[17:06:44] <mumptai> there was little to rationalize the extra power consumption ...
[17:07:53] <mumptai> but yeah, i guess it would still work when powered on
[17:19:49] <theBear> mmm,. at the moment i'm fairly decided that the old no-moving-parts beercan-chimney based p2 (well i got a modded slot1 + p3 chip all ready to just check the whole chimney deal can keep up next time i got it running for a bit) is my oldest still-in-use machine, mostly cos aside from nostalgic and emotional attachments, it's old and legacy enough to jam my old sbawe32's (with on-board slots for 30pin simms to hold samples for the emu8k synth/sampley
[17:19:50] <theBear> in a single chip feller, all of which works just perfect in my favourite impulsetracker, AND is as i recall the only other option than a fancy expensive then just impossible to find old gus card, if you wanna have some midi in/out AND be able to play/synth any samples/audio at the same time
[22:04:02] <anonnumberanon> https://www.youtube.com/watch?v=9rT-_3i2Q4s
[22:04:10] <anonnumberanon> encoders and stuff
[22:10:42] <anonnumberanon> I didn't know how encoders worked before and now I have a good idea of the types and their operation modes.
[23:08:52] <Snert> I'm pretty intrigued by them
[23:10:18] <Snert> closed loop control of motors is kinda fun.
[23:43:46] <anonnumberanon> Yeah I kinda want to get into it.
[23:44:18] <anonnumberanon> That is, if it makes me money or if it can help a fun project I already have (I wanted to make my own servo a while ago lol).
[23:45:55] <Snert> ummm well, making $ might be hard to do.
[23:46:13] <Snert> I can't make $ at this I'm sure