#robotics | Logs for 2016-04-19

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[00:22:30] <anonnumberanon> I'm so tired it's nice, I'll finally be able to sleep I think.
[00:26:57] <Jak_o_Shadows> I need more solder so badly
[00:27:49] <anonnumberanon> theBear,
[00:28:05] <anonnumberanon> anythan happen today that's cray before I close my eyes?
[00:28:27] <anonnumberanon> you who knows all of the things
[00:30:46] <anonnumberanon> Jak_o_Shadows, whatcha been soldering? pictures?
[00:31:03] <Jak_o_Shadows> haven't actually broken out the soldering iron yet.
[00:31:24] <Jak_o_Shadows> It's the alternate power supply for the LCD screen i'm putting on a microphone mount
[00:32:31] <Jak_o_Shadows> Hoping 12, 2A (24W) is enough for the panel and the LED striplight i'm putting as a backlight
[00:40:20] <anonnumberanon> tried first with crocodile clamps and wire yet?
[00:41:01] <Jak_o_Shadows> nah
[00:41:12] <Jak_o_Shadows> It's a 12ish pin connector that I'd have to butcher apart
[00:42:21] <rue_house> today that boss said "they can take those solar cells and stuff them where the sun dont shine"
[00:42:33] <rue_house> he dosn't like the new brand the supplier is carrying
[00:45:16] <anonnumberanon> I'll take them cells sir, I can recycle them.
[00:45:36] * anonnumberanon machiavellychally installs them on house for free poewr
[00:46:05] <rue_house> http://ruemohr.org/~ircjunk/images/p1070958.jpg
[00:46:10] <rue_house> I was bad, I started a new cnc machine
[00:46:50] <anonnumberanon> You have to make sure all measurements and angles have to be really perfect and flat for this type of stuff yet?
[00:47:28] <rue_house> no, its a basic frame, everything bolted to it will be adjusted
[00:47:51] <rue_house> I'v learned to just compensate out all the errors
[00:47:51] <anonnumberanon> But to be honest yeah, that's bad you're making a new machine. It's okay though I'll take if off your hands once it is built (just prepare it to machine aluminum with nice precision).
[00:48:01] <rue_house> like the 25/2=13.5 that was *just* made with
[00:48:34] <rue_house> I have some schedule 80 pipe I almost used for it
[00:48:38] <rue_house> 1/5"
[00:48:40] <rue_house> 1.5"
[00:50:21] <rue_house> "IdeaSteelers. Let us do your thought to reality conversions."
[00:54:49] <anonnumberanon> <anonnumberanon> So I was reading the Trossen robotics forum the other day and something really puzzled me.
[00:54:50] <anonnumberanon> <anonnumberanon> This guy has started a humanoid biped thread.
[00:54:51] <anonnumberanon> <anonnumberanon> He started posting pictures of really nice work in making robot brackets and a body out of bar stock of aluminum.
[00:54:52] <anonnumberanon> <anonnumberanon> It was really neat.
[00:54:53] <anonnumberanon> <anonnumberanon> He had bough 8 servos of type Mx64 (I think they are like 250 dollars a pop). Installed them, everything was perfect, looked neat, was sick. The robot was ready to get ran for first time.
[00:54:54] <anonnumberanon> <anonnumberanon> Then he asked "but I have no idea how to make this thing move".
[00:55:05] <rue_house> "IdeaSteelers. Converting your thoughts to reality at 1300c"
[00:55:18] <anonnumberanon> Next thing you know he has abandoned the thread and some dude finds an ad on Ebay for 8 servos just like the ones in question...
[00:55:51] <rue_house> heh
[00:56:56] <rue_house> lots of really smart people have no attention span
[00:57:24] <rue_house> in a week they can master computer programming, write an awesome program, and then they abandon it all and pick up someting else
[00:57:27] <anniepoo> rue++
[00:58:23] <rue_house> ... is that an upvote?
[00:58:31] <rue_house> :D
[00:59:30] <rue_house> need to work out sliders for that thing
[00:59:48] <rue_house> I have some medium hard hdpe that I might use against metal
[01:01:20] <rue_house> I'll use stepper motors
[01:01:35] <rue_house> I have some 1.8 degree motors, nema23
[01:01:50] <rue_house> I can use them with threaded rod
[01:02:05] <rue_house> but I think I want to upgear them
[01:02:09] <Jak_o_Shadows> I wish I had some female usb sockets that came pre-wired
[01:02:18] <rue_house> 1:2
[01:02:25] <rue_house> 3.6 degrees
[01:02:41] <rue_house> on, lets say 5/16 rod, which is 16tpi?
[01:03:36] <rue_house> 18
[01:03:52] <rue_house> 18tpi, 3.6 degrees
[01:04:24] <rue_house> 18*360
[01:04:31] <rue_house> degrees per inch
[01:04:51] <rue_house> 6480 degrees per inch
[01:05:08] <rue_house> 3.6degrees
[01:05:13] <rue_house> is 1800 steps per inch
[01:05:58] <rue_house> 1:3 would be 1200 steps per inch
[01:06:51] <rue_house> next is 900 steps per inch, although I dont need it, I want about 1 thou
[01:07:18] <rue_house> 1:3.6 would be ideal then
[01:08:07] <rue_house> 36:10
[01:08:21] <rue_house> I wonder if I can find that in the huge pile of gears
[01:10:49] <rue_house> 1/2" is 13tpi
[01:11:55] <anonnumberanon> How long does a drill bit last for aluminum machining and is it expensive to replace.
[01:12:21] <rue_house> you mean milling with a drillbit or just drilling??
[01:12:58] <rue_house> including or excluding resharpening it?
[01:17:35] <rue_house> I can use the lathe to make whatever pitch thread I want
[01:17:44] <rue_house> nuts would be a pita
[01:18:08] <rue_house> TO CHINA!
[01:20:35] <rue_house> an acme tap is gonna set me back atleast $50
[01:20:42] <Jak_o_Shadows> well, that's one thing fixed for day
[01:22:08] <rue_house> ok, making acme taps is a good reason to buy drillrod
[01:24:41] <rue_house> ah wait a sec, if I make a steel tap, I can thread plastic or maybe aluminum
[01:25:05] <anonnumberanon> I was just asking a stupid question I feel.
[01:25:20] <rue_house> its ok, all questions are stupid
[01:25:24] <anonnumberanon> In my defense I know absolutely nothing about machining.
[01:25:41] <anonnumberanon> Well, machining using machines.
[01:25:44] <rue_house> with the right lube, cooling, feed rates, 1000's of holes
[01:25:53] <rue_house> and thousands more with resharpening
[01:27:23] <rue_house> I could use a non-screw drive...
[01:27:32] <rue_house> na, play ads up too fast
[01:32:12] <rue_house> hmm 5tpi would be ideal
[01:33:21] <rue_house> 1-3/4" bolt
[01:34:46] <rue_house> 3/4" comes in 10
[01:35:14] <rue_house> I would need to use pipe to lower the inertia
[01:36:11] <rue_house> with 5/16"-18
[01:36:41] <rue_house> 3600 steps per inch
[01:37:43] <rue_house> better than 14400
[01:38:09] <rue_house> so 1:2 if I can
[01:38:41] <rue_house> I wonder if the torque would work out
[01:39:03] <rue_house> those nema23 motors run whole laserprinters
[01:42:29] <anonnumberanon> my eyes are failing
[01:42:32] <anonnumberanon> nbed\
[01:42:45] <rue_house> unfortunatly, I'm wide awake
[01:42:58] <rue_house> tommorows gonna be hell
[01:45:10] <anonnumberanon> take some sleeping pills
[01:45:20] <rue_house> canada dosn't have any
[01:45:30] <rue_house> I was given gravall instead
[01:45:58] <rue_house> I think I'd be better off with ANY medication that said to not drive heavy equipment
[01:48:41] <anonnumberanon> lol
[02:05:29] <rue_bed2> I should see what medications say they may cause drowsyness
[02:06:18] <rue_bed2> I dont like any of the slider ideas that I have so far
[02:07:09] <rue_bed2> I wonder if I can just use metal to metal with some 60wt oil
[02:07:13] <Jak_o_Shadows> My stewart platform broke, and I think i've lost a piece of it
[02:07:18] <Jak_o_Shadows> I'll have to print a new one
[02:07:22] <rue_bed2> heh
[02:07:28] <rue_bed2> chicken-egg
[02:10:14] <Jak_o_Shadows> haha.
[02:10:23] <Jak_o_Shadows> Nah. But the 3d printer is somewhat disassembled.
[02:10:35] <Jak_o_Shadows> One of my z-rods is a bit bent. Not too bad though.
[02:10:46] <Jak_o_Shadows> I figure reassembling that whole stage might make it print nicer
[03:06:56] <theBear> anonnumberanon, nup, but now that i'm speaking to your dreamstate not-conscious head, umm, i dunno, dream of err, houndstooth and argyle, hill after hill, field after field, amber waves of argyle, with houndstooth encroaching rapidly from the south and around to the east, needless to say, the tension is LITERALLY palpable by this stage in the day.. you feel the way teh shit clings to the air ? shitstorm's a comin randy ...
[03:07:45] <theBear> heh, that was a bit heavy for anyone that isn't me or MAYBE zappa or the garcia feller before him, poor bastard ain't gonna be the same person he was when he closed those eyes last night
[03:07:49] <theBear> oh well, too late nate
[03:07:53] <theBear> err, too late now
[03:08:01] <theBear> stupid brain, and/or fingers
[03:08:35] <Jak_o_Shadows> por queno los dos
[03:10:33] <theBear> por que ? mi est non sprechen das es`panol
[03:10:40] <theBear> muy nacho !
[03:10:44] <theBear> farfeg neugen !
[03:11:00] <theBear> ai ai ai ! muy caliente !
[03:11:18] <theBear> are those bugle boy jeans ?
[03:11:49] <theBear> aiiieee ! my mind !
[03:12:30] <Jak_o_Shadows> ok, yeah, I was quoting that ol de paso advert
[03:13:41] <theBear> hmmmm... have i seen that one ?
[03:14:04] <Jak_o_Shadows> Surely
[03:14:08] <Jak_o_Shadows> You're alsotralian yeah.
[03:14:36] <Jak_o_Shadows> https://www.youtube.com/watch?v=NuEIsqeRR1o
[03:16:16] <theBear> i guess, definately never been in another country, tho i been swimming in at least 2 different oceans, so iguess i left it a few times
[03:17:30] <theBear> effin jeffin grumble mumble
[03:17:42] <theBear> and damn, that was over so quick i couldn't even tell if it was in yet !
[03:17:59] <theBear> heh, 3 times thru now and i still can't spot the non-english part
[05:30:28] <veverak> for that feeling
[05:30:33] <veverak> when you want run something on school server
[05:30:41] <veverak> newest version of python are 2.6 and 3.2
[05:30:52] <veverak> no pygame around and pip refuses to install it
[05:30:54] <veverak> great...
[06:14:31] <deshipu> refuses?
[06:34:18] <veverak> https://bpaste.net/show/fac7cc6fc2e2
[06:34:25] <veverak> but I will try to play with it
[06:59:42] <theBear> it simply flat-out refuses ! afaict <grin>
[06:59:58] <theBear> and it sounds more than just adamant ! and that dude could sing :)
[07:01:24] * theBear imagines up a band of musical ants, fronted by a very determined looking dude with a microphone, frozen just before starting to play
[07:01:49] <theBear> heh, ludicrous ! what crazy people think up this nonsense ? oh wait, that was my crazy head :-(
[07:02:21] <deshipu> why are you frenching up the punctuation?
[07:02:32] <deshipu> WHY?
[07:02:33] * SpeedEvil stands and delivers.
[07:02:35] <theBear> hmm, i wonder, i've never heard of any unions or exclusive clubs or secret societies or much of anything for crazy persons.. i'll look into that i think
[07:02:42] <SpeedEvil> https://www.youtube.com/watch?v=4B2a6l6wM2k - for theBear.
[07:03:06] <theBear> frenching ? i didn't use any apostrophethingsi don't understand, and moreso didn't use them in random middles of words 'cos i also don't remember where they go :)
[07:03:56] <theBear> wait, you one of those mental persons, like all current grammar check and autocorrectey things it would seem, that thinks punctuation/sentence-ending stuff shouldn't have a space before it ? 'cos that's just stupid
[07:04:27] <deshipu> it should have half-space
[07:04:29] <theBear> yeah, even stupider than the imaginary robot faces that thunk it !
[07:04:38] <theBear> my keyboard doesn't have one of them
[07:04:45] <theBear> should i go find the hacksaw ?
[07:04:54] <deshipu> but since you don't have that on irc, it's customary to skip it -- except for the more french areas of the world
[07:05:10] <theBear> SpeedEvil, heh, it was nothing like that in my mind ;-)
[07:05:18] <deshipu> because they have to be different from those pesky britons
[07:05:38] <deshipu> your mind is your sole responsibility, I'm afraid
[07:06:19] <SpeedEvil> I blame the bacteria.
[07:06:26] <deshipu> which one?
[07:06:56] <deshipu> that's what I call a "target-rich battle environment"
[07:06:56] <SpeedEvil> A surprising amount of neural machinery is in fact used by bacteria to sense their environment and is conserved in mammals.
[07:07:37] <theBear> in irc i use my own developed over many years grammar/punctuation and complete approach to irc writing, which i hope describes what i would be doing/how i would speak and pause etc, if you were here listening to my monotone drawl rants instead of getting the text version that you can imagine a more animated kinda voice for, even a little baby voice or one of those latenight tv ad "ooooh, i'm lonely, pleeeaase call me, sexy ! <whispered low> $5 first
[07:07:37] <theBear> minute then $4 for every minute or part thereof after, please get bill payers permission before wanking"
[07:08:21] <theBear> i like that hornblower series, but what little i saw of the movie i was unaware of a few nights ago, did not please me ! i tihnk a lot of it rests on the verywell chosen main players in the series
[07:08:25] <deshipu> conserved? it's not like we evolved from a bacterium -- we are more like confederations of bacteria descendants
[07:08:39] <theBear> the old grumpy captain guy and the yyoung hornblower and a few of his crew are just gold
[07:08:52] <theBear> well, taht's what i think
[07:09:07] <theBear> my head alone conseres universes of bacteria
[07:09:23] <theBear> oh, am i a mammal ? or are they the nocturnal dudes or i dunno, whales maybe ?
[07:09:57] <theBear> ooh, howbout otters ? is they mammal ?
[07:10:04] <deshipu> theBear: how should I know if you are a mammal? if you are, then happy mammaling, I guess
[07:10:08] <theBear> i'm a physics guybtw
[07:10:21] <theBear> deshipu, i spose we both gotta hope SpeedEvil knows
[07:10:34] <theBear> oh wait, i just said physics guy, is that a mammal ?
[07:10:50] <SpeedEvil> http://brainsciencepodcast.com/bsp/surprising-discoveries-about-synapse-evolution-with-seth-gra.html
[07:10:54] <deshipu> start by defining the meaning of the word "is"
[07:10:54] <theBear> i wonder, there MUST be irc channels with zoo or furry in their names hehe
[07:10:58] <deshipu> and then go from there
[07:11:13] <SpeedEvil> theBear: probably not on freenode
[07:11:35] <theBear> deshipu, i'll use a simple example to do that... "what it IS, where it'S (it's -> it is) at, yo !"
[07:11:50] <deshipu> theBear: you forgot the space before "'"
[07:11:50] <theBear> i assume we all on the same page now
[07:11:59] <deshipu> theBear: and before the ","
[07:12:14] <theBear> commas don't get them, or that was a half space, one of those
[07:12:14] <deshipu> and before and after the parens
[07:12:36] <deshipu> you are simply an inconsistent crazy person, admit it
[07:12:37] <theBear> parenthesis, mr lazy typey, or regular brackets if we programming technical stuffs
[07:12:49] <SpeedEvil> https://perens.com/
[07:13:00] <theBear> i'm not ashamed to admit i'm crazy, quite crazy indeed, and heck, there's justno hiding it most of the time anyway
[07:14:22] <deshipu> not hiding it very well
[07:16:22] <theBear> not trying mr not so smarypants :)
[07:16:37] <theBear> errr, have a T, ddo with itwhat you will
[07:16:45] <theBear> maybe lube my spacebar, if yer cool...
[07:16:55] <theBear> heh, never called it that before
[09:43:35] <rue_house> "Accuracy is the sum total of your compensating mistakes."
[09:43:37] <rue_house> oo I like that one
[09:47:08] <veverak> :D
[09:49:53] <rue_house> I have decided to move the left foot of the new cnc left by 1cm
[09:50:07] <rue_house> this will compensate it nicely
[09:50:14] <rue_house> for the error I made laying it out last night
[09:52:55] <rue_house> http://ruemohr.org/~ircjunk/images/p1070958.jpg
[09:53:06] <rue_house> I should be able to get my target of 20cmx10cm
[09:53:19] <rue_house> I'm thinking 20cm on the z?
[09:54:28] <rue_house> maybe that cross member should have been sideways and down...
[09:54:44] <rue_house> hmm, I can throw a backer under it
[09:57:10] <rue_house> ooo hydraulic hover slider plates...
[12:00:42] <z64555> yo yo yo
[12:08:19] <z64555> currently trying to pry off the cap of my old antenna to look at what circuitry it has
[12:08:23] <z64555> so far, the cap is winning
[12:11:31] <z64555> :/ looks like they might've welded the plastic together
[12:11:41] * z64555 sighs and gets out the hacksaw
[13:51:54] <z64555> vinyl tape, vinyl tape, where art tho?
[13:52:05] <z64555> It's been a while since I last used the stuff
[13:54:32] <robopal> vinyl tape = electricians tape?
[13:56:36] <z64555> yes
[13:57:01] <z64555> poly vinyl chloride, I think
[14:56:43] <z64555> trying to half-ass anneal a piece of coax right now. Going to use it for the 1/4 wave balun
[15:04:48] <SpeedEvil> err...
[15:05:14] <SpeedEvil> anneal? for 99.999% of coaXes, you are going to have a bad time
[15:06:46] <z64555> I got it bent into shape, and stuck it in the toaster oven at 200F for about 20 minutes
[15:08:03] <z64555> seems to have actually worked
[15:08:47] <z64555> its some very stiff RG400 , I used a zip tie to hold it into shape while it was cooking
[15:13:02] <SpeedEvil> Oh - it'll make the plastic softer.
[15:14:24] <z64555> while it's hot. when it cooled down it returned to its original stiffness
[16:29:59] <Snert_> did it hold shape?
[16:39:48] <z64555> yes
[16:55:30] <z64555> sigh. of course it would have helped if I had stripped the coax first
[16:59:21] <theBear> nah, then you'd have a weird angled strip/shield/end
[16:59:33] <theBear> just use a razor and some 'mad skillz'
[17:32:32] <anonnumberanon> Not bad for an eery story theBear.
[17:32:53] <anonnumberanon> oh hi z64
[17:33:10] <theBear> anonnumberanon, ahh, i trust you slept well then :) tho from memory i woulda said more surrealist than eery heh
[17:33:50] <anonnumberanon> The sleeping part was good. The wakening was tough.
[17:34:04] <theBear> with just a hint ofwatchacallit, umm, that thing where one sense mixes and/or seems to trigger another
[17:34:09] <theBear> synasthesia !
[17:35:18] <theBear> if you were a seasoned vet with sleep deprivation and/or dmt abusery, you'd know all about that... apparently some rare folks have it naturally in varying extents too, not surprisingly most of the noted ones are artists, often with heavy duty kinda art
[17:35:29] <theBear> and i use the term art/artist very generally here
[17:59:49] <Snert_> I use it very generally everywhere.
[18:00:19] <Snert_> if it ain't Van Gogh quality, then "artist" doesn't mean anything.
[18:00:37] <Snert_> a few blinkin' lites doing a colorshow ain't no VanGogh.
[18:02:41] <theBear> van gogh never had a guitar, err, i assume
[18:03:10] <theBear> is what i was going for, but i don't disagree with yer, i strongly agree actually :)
[18:03:17] <Snert_> certainly not electric. And if he did, it would be a violin.
[18:04:18] <theBear> lol "not this guy.... if he had an electric guitar, it'd be a violin ! that's just how he rolls, all defying logic and physical laws without breaking a sweat !"
[18:05:45] <Snert_> that's okay. It's only a short matter of time until a cisco router sits in every band's on stage equipment stack.
[18:06:59] <Snert_> Imagine that.... my 80" TV showing me a live concert.
[18:07:24] <theBear> aww, don't say that :( then again, i am retired, maybe i don't care anymore, and then it'll blow effing kids tiny mindballs if i ever play again, wandering up with big heavy "antiques" that make wacky noises, but ONLY if you plug them in with a bunch of cables
[18:07:51] <theBear> heh, you DO know that live concerts on home tvs already happens, like, regularly, i assume :)
[18:07:53] <orlock> Snert_: More likely something that doesnt suck ass so much
[18:07:55] <orlock> and is hipper
[18:08:03] <orlock> Juniper or PA
[18:08:40] <orlock> At least you get a usable amount of eth ports with junipers
[18:08:54] <Snert_> live concerts on TV, okay it's happening now. But I mean it happening as a matter of course. Every band has one.
[18:09:17] <Snert_> I just plug in the ip addy of my local bar and listen.
[18:09:46] <orlock> ah
[18:09:56] <orlock> unsure what cisco's have to do with audio streaming
[18:10:22] <orlock> be more likely a rebranded box by turtle beach or whoever
[18:10:37] <orlock> i forget the mob who did the sound cards with the 19" rack mounted breakouts with XLR
[18:12:36] <Snert_> Just the concept of a data router being a standard part of any band's equipment.
[18:12:53] <theBear> i got a big sexy cisco (well technically a tiny kinda-cisco, or big sexy not-branded-linksys) thing behind me, not only is it superduper, but turns out it's my first remotely practical possibly even at all do-able custom firmware (wrt/tomato kinda style) thingy that's not a computer or mobile etc, and being all fancy it got crazy specs, hundreds or mhz arm-y style, 128mb flash + serial flash for i guess initial bootstrap stuff etc etc, if i willing
[18:12:53] <theBear> to lose a few aerials and maybe some wireless class i never heard of before i can even pop out a card and have a free mini-pcie in there
[18:13:35] <theBear> layla/gina/darla effing, looks likei forgot the firstcompany too, but that was their initial matching set of interfaces
[18:13:45] <orlock> thats the one
[18:13:47] <theBear> unless turtle beach did one way waaay back i never saw
[18:13:50] <theBear> echo ?
[18:14:17] <Snert_> pretty soon, all instruments will have ip addresses.
[18:14:26] <theBear> turtle beach were beyond rare in this country, heh, even sb 1/1.5/2.0 weren't exactly common, not this state anyway, backwards as it still is
[18:14:39] <orlock> yeah
[18:14:41] <orlock> Event Layle?
[18:14:47] <theBear> not my ones, and i'm too lazy and broke for nw ones
[18:14:53] <theBear> event ! well played chap
[18:14:58] <theBear> and it was layla i sure
[18:15:06] <orlock> I've got a Turtle Beach card at home
[18:15:14] <theBear> well, i was sure :-(
[18:15:24] <orlock> it was a wavetable capable one but more onb the level of a SB 16
[18:15:34] <theBear> i got an old adlib gold put aside somewhere for giggles, but that was a bit later, and i got it very long after that
[18:15:39] <orlock> yeah, Layla, Gina
[18:15:43] <theBear> Darka
[18:15:45] <theBear> gar
[18:15:47] <theBear> Darla
[18:15:54] <orlock> i know some people who have them
[18:16:01] <orlock> TB now mainly do headphones?
[18:16:25] <orlock> there used to be an app you could use a TB card to do speaker response analysis
[18:16:52] <theBear> i think we had the small or medium one at the studios i was around for various reasons for a few years, nothing special really, but ya know, cd duplication service, looks better to have that rack with the sockets than a little 1/8" -> something snaking round the back of yer pc
[18:17:36] <orlock> i once remember using my SGI Indy for dumping audio from audio DDS to files
[18:17:45] <orlock> hold on, that would be plain old DAT
[18:17:46] <theBear> pretty sure "bassbox pro" the oldest and longest running speaker everything design program around, could do that, you just gotta setup a decent ref. mic and a 1meter boxless baffle that you can hang away from anything too close
[18:18:10] <orlock> because the Indy had the RCA based digital io at whatever the "master" level audio rate was
[18:18:14] <orlock> 28Khz?
[18:18:20] <theBear> which is standard practice btw, the 1meter baffle thing for spec measuring, at least for all but the stupid-biggest subs
[18:18:38] <theBear> master ? oh dat, 44.1 or 48khz
[18:18:50] <theBear> pretty sure the low qual with 22050, but that one might be off
[18:19:06] <theBear> ooh, lemme go look, seeing as the studio has been dug-out for the first time in a couple years
[18:19:44] <theBear> heh, only 44.1 and 48k, but that might just be cos it a pro/top of the range and later model one
[18:25:35] <z64555> anonnumberanon: ohai
[18:30:40] <theBear> haihai
[18:31:23] <theBear> ooh, now do we eat cake and tell each other we look great (lie that they ain't horrible and fat) and bitch about men while none are here to defend them ?
[18:31:56] <orlock> grr need to ressurect my desktop
[18:32:07] <orlock> trying to cad on the Dell without fast 3d is horrible
[18:32:09] <Snert_> dunno 'bout you, but I got my Man Card. Right here in my wallet.
[18:32:18] <SpeedEvil> theBear: I am now cooking cake.
[18:32:31] <SpeedEvil> theBear: blackcurrant and gooseberry cake
[18:32:48] <SpeedEvil> Well. Summer pudding
[18:35:00] <anonnumberanon> yeah this girl was being flirty and she then talked about her bf
[18:35:25] <anonnumberanon> im done talking to people in real life lol
[18:36:23] <theBear> i am now slow-footed buffalo, heh, indian-names are fun, ooh i mean they are fun, cooking cake :)
[18:40:46] <anonnumberanon> are you trying at heikus again? it should be 7 syllables
[18:41:36] <theBear> haikus, mr i obviously never learned to jap alphabet guy
[18:42:02] <theBear> and i think it 5 7 5 or something, but i ain't no poet, i'm way too macho and awesome to admit that publically !
[18:48:13] <anonnumberanon> me either
[18:48:38] <anonnumberanon> s/ e/ ne
[20:29:09] <z64555> er what
[20:31:31] <theBear> my thoughts precisely !
[20:36:51] <Montezuma> I concur
[20:40:50] <theBear> i do that sometimes
[20:43:22] <Jak_o_Shadows> Hmm. One day I shall have to buy more power supplies because my collection will run out
[20:44:08] <z64555> build some!
[20:44:53] <Jak_o_Shadows> pfft. Sounds like too much work.
[20:45:28] <Jak_o_Shadows> That said, I am currently looking at some bridge rectifiers - I have some AC-AC power supplies that are decent.
[20:45:29] <z64555> well, yeah, if you want to go all SMPC on it
[20:46:22] <z64555> AC-AC power supply? wut
[20:46:30] <Jak_o_Shadows> aka a transformer
[20:47:20] <z64555> yeah, but it doesn't sound right
[20:47:30] <Jak_o_Shadows> yeah
[20:49:32] <Jak_o_Shadows> If i recall correctly, it's only like 36V, 36W. But it'd rectify and DC-DC down to 12V or 6V, so i can get more current out yeah?
[20:50:36] <z64555> no, you'd do the AC transformation down to 12V or 6V first before rectifying
[20:51:15] <z64555> DC-DC transforms basically involve powering an oscilator to drive a transformer and then have the resulting signal rectified again
[20:51:58] <Jak_o_Shadows> yeah
[20:52:20] <z64555> The Wattage rating on a transformer is there so you don't burn up your secondary, IIRC
[20:58:34] <Jak_o_Shadows> This is for a modular wargaming terrain board system. The current plan is to run the rectified transformer output to each square, along with i2c (SDA, SCL) - so 4 wires. Then have dc-dc converters where I need them.
[20:59:01] <Jak_o_Shadows> Not running the lower voltage DC to each square because I have some 6V lights, and I don't want to run heaps of wires.
[21:02:47] <z64555> lamps or LEDs?
[21:05:30] <Jak_o_Shadows> lamps
[21:05:40] <Jak_o_Shadows> about 60mA each
[21:11:38] <z64555> are they always on, or controlled by something
[21:11:58] <Jak_o_Shadows> always on for first version, controlled by something when I decide/figure out how
[21:12:12] <z64555> If they're always on, then you can connect 2 of them in series with a 12V source
[21:14:00] <Jak_o_Shadows> That's true
[21:14:36] <z64555> Similarly, you could control them with a mosfet or a uC that can handle the higher voltages in pairs
[21:15:28] <rue_bed2> no jester, damnit
[21:15:35] <orlock> say, that reminds me
[21:16:08] <z64555> who's jester
[21:16:19] <orlock> i want to provide 16v @ 26A
[21:16:30] <orlock> from batteries
[21:17:20] <z64555> orlock hook a battery of cells in series to get the voltage, then stack the batteries in parallel to get the current
[21:17:20] <orlock> assuming i've got the weight spare, i'm guessing 3x 6v SLA batteries, but how to clamp it down from 18v to 16v?
[21:17:32] <z64555> oh, you're goign that way
[21:17:40] <Jak_o_Shadows> Yeah, my plan is to eventually use some mosfets with some gate drivers I have
[21:18:03] <z64555> orlock: Cheapest way is to use a voltage regulator. Best way is to use a Buck mode DC-DC converter
[21:18:07] <orlock> or i could use 10x AA's for 15v
[21:18:30] <orlock> sumo bot compitition, 3kg weight limit
[21:18:39] <orlock> i have motors and a nice motor controller already
[21:18:44] <z64555> AA's and the like don't have as much power density as the Lithium blends
[21:18:49] <orlock> motors + gearheads are about 450g each
[21:19:02] <orlock> so i have 2kg left for chassis and batteries
[21:19:21] <orlock> 13A per channel, 16v max
[21:19:57] <z64555> go for the buck converter
[21:30:12] <Jak_o_Shadows> I found the gripper I printed and assembled the other day
[21:30:16] <Jak_o_Shadows> I REALLY should test it
[23:50:27] <theBear> hmm, how in the eff can "time domain crosstalk" err, be something that makes sense ? crosstalk is crosstalk,it can't magically bend the laws of time and physics, can it ?
[23:51:16] <theBear> sidenote: it's a spec listed under dvi standard that err, not reopening it right now, but either cables or cables + either end socket must comply within