#emc | Logs for 2009-11-13

[00:01:08] <MarkusBec_away> MarkusBec_away is now known as MarkusBec
[00:17:31] <Jymmm> nope
[00:29:23] <pfred1> I had a Dremel blow up from thermal expansion
[00:29:37] <pfred1> turning it on and off made the magnets crack
[00:30:30] <pfred1> Jymmm if you had an air compressor those cheap pneumatic hammers work well for small concrete jobs
[00:30:39] <archivist_emc> I use a dremel nearly every day, one failed ad 30k with a segment off the commutator
[00:31:02] <pfred1> I've had a lot of bad luck with Dremel brans tools
[00:31:36] <pfred1> I have two RTX B&D clones now among other high speed spindle tools
[00:31:56] <pfred1> if i really need to die grind I break out my CP 825
[01:23:43] <MarkusBec> MarkusBec is now known as MarkusBec_away
[01:34:08] <geo01005> hmm, I'm confused. Is it not possible to net a signal to a pin that is and I/O type like the gain pins on a PID component?
[01:39:28] <geo01005> I have a spinbox that I would like to connect to the Pgain pin of a PID component.
[01:39:57] <geo01005> The spinbox has a float pin with the OUT direction.
[01:40:21] <geo01005> The PID component's Pgain pin is and I/O float pin.
[01:47:35] <geo01005> I suppose I don't understand what a I/O pin is.
[01:47:57] <pfred1> I/O I/O its off to work I go!
[01:48:26] <pfred1> geo01005 I think an I/O pin is something little dwarves mine with
[01:48:56] <geo01005> ahh I see.
[01:50:11] <geo01005> the COMP docs say that and io pin can be read or set.
[01:50:38] <geo01005> The PID docs says that the Pgain is a parameter, but it isn't, it is a io pin.
[01:51:19] <pfred1> geo01005 me, I just ain't got that far yet I'm still putting my machine together
[01:51:55] <pfred1> geo01005 I have read some of the docs that your issue seems to relate to to me at least
[01:52:23] <pfred1> geo01005 andquite honestly I didn't see much use for too much of that except maybe for system debugging
[01:53:07] <geo01005> I have a system that requires different gains for different setups... I may have to figure out some work around.
[01:54:48] <pfred1> geo01005 hmm that doesn't sound like much fun
[01:55:02] <pfred1> geo01005 can't just set it and forget it?
[01:55:19] <pfred1> geo01005 is this a spindle speed tach or something?
[01:55:26] <geo01005> nope... it is and EDM like process.
[01:55:33] <pfred1> ah
[01:55:37] <pfred1> you're a sinker
[01:55:56] <pfred1> we had one of them in a shop I worked in
[01:56:04] <pfred1> but we just used it to drill carbide
[01:56:10] <geo01005> I don't want to have to restart with a new configuration for a different current setting.
[01:56:34] <pfred1> man like what it your electric bill?
[01:56:54] <pfred1> everytime i fire up my welder i cringe
[01:57:10] <geo01005> only 2.5kw.
[01:57:21] <pfred1> oh only OK ;)
[01:57:33] <pfred1> * pfred1 sees the money flying
[01:57:51] <geo01005> Well I'm going to go home. If anybody could explain this to me I'll be watching the log.
[01:58:21] <geo01005> Thanks for your help pfred1, talk to you later.
[01:58:35] <tomp> geo01005: it may not be changeable during 1 run of emc2, like: it is a param, and can be read & write but not changed on fly
[01:58:42] <pfred1> ah I'll be where you're at eventually hopefully
[01:59:01] <geo01005> tomp, it is a pin not a parameter.
[01:59:03] <pfred1> I noticed that while I was reading
[01:59:40] <tomp> correct , you can read the thing & you can set the thing, kinda sounds like a param despite the name 'pin'
[02:00:00] <tomp> acts like one, called by another
[02:00:45] <tomp> the idea is, it may not be changeble on the fly despite any nameimg convention, (what works is the truth )
[02:01:03] <geo01005> hmm, is there any way around that?
[02:01:53] <geo01005> Like create a RT comp with a IN pin and and IO pin, when the IN pin changes, change the IO pin?
[02:01:58] <pfred1> just have to live with it
[02:02:31] <geo01005> IO pins like the index signal do change while EMC is running.
[02:02:36] <tomp> dunno, duplicate components,each with thier own gain, but selectable? (swag)
[02:02:47] <pfred1> or keep on trying different stuff sometimes i go crazy and something sticks to the wall eventually
[02:03:05] <tomp> discuss in #emc-devel with a guru?
[02:03:16] <pfred1> tomp that is what I was thinking
[02:03:28] <pfred1> just make different instances for all
[02:03:42] <tomp> i can honestly and accurately say that i dunno ;)
[02:03:51] <pfred1> the old sledgehammer approach
[02:04:17] <pfred1> sometimes it doesn't pay to be elegant
[02:04:23] <tomp> or 'mechanincly' lie at the hardware level, shifting gains
[02:04:36] <tomp> with some mux choosing which gain
[02:04:47] <pfred1> I know it pains me but sometimes just got to throw the kitchen sink at things
[02:05:31] <geo01005> hmm, I'll hop on #emc-devel a little later.
[02:05:41] <tomp> hah i interface one edm by programming a device that faked button bushes ( old agie/elox sinker used for texturing... edm for time, not depth )
[02:06:23] <geo01005> ha.
[02:06:39] <tomp> couldnt get the prints, but had the operator manual.
[02:06:53] <geo01005> could have made a robot that actually pushed the buttons ;)
[02:07:06] <tomp> hacking a kbd matrix is cheaper
[02:07:29] <geo01005> Well I
[02:07:34] <geo01005> Well I'm taking off.
[02:07:57] <tomp> good luck, btw i dont see current governing gain, but ok
[02:11:26] <pfred1> tomp it did back in the tube daze ;)
[03:03:08] <tomp> 'chube' as my aussie friends say
[03:03:31] <tomp> good for for hi-freq, great on carbide
[04:51:24] <Dave911> logger_emc:mark
[04:51:24] <Dave911> I'm logging. I don't understand 'mark', Dave911. Try /msg logger_emc help
[04:52:15] <Dave911> logger_emc:bookmark
[04:52:15] <Dave911> Just this once .. here's the log: http://www.linuxcnc.org/irc/irc.freenode.net:6667/emc/2009-11-13.txt
[05:19:54] <tom4> tom4 is now known as tom3p
[05:53:15] <Coder4life> morning emc fans
[10:20:30] <MarkusBec_away> MarkusBec_away is now known as MarkusBec
[11:55:34] <piasdom_> g'mornin all
[13:28:47] <MrSunshine_> yey, turned etc the Z axis today ... so i can mount it in some way :P
[14:54:37] <MrSunshine_> heh eno wonder the bad precision in the mill, the lock nuts had screwed themselfs up like 1mm on each axis :P
[14:54:45] <MrSunshine_> replaced with new ones now :)
[14:55:07] <Jymmm> SWPadnos: 1.5TB = $99
[14:55:14] <MrSunshine_> could use something to check repeatability on the mill with
[14:55:52] <SWPadnos> Jymmm, there was a sale with 1.5TB at $85 on NewEgg, but the particular drive had a string of really bad reviews (was a Seagate)
[14:56:16] <Jymmm> SWPadnos: oh joy
[14:56:43] <SWPadnos> probably the most "1" ratings I've seen on any product actually (1 is the lowest)
[14:57:17] <Jymmm> SWPadnos: Yeah, it's abut the time to move on to the next hdd mfg.
[14:57:40] <Jymmm> Usualy it's every 6-9 years.
[14:57:45] <MrSunshine_> an ordenary digital "shootmeasure" (wtf is it named .. ) wouldnt give very accurate result would it? :)
[15:02:12] <archivist> digital verniers are pretty good if used properly
[15:05:29] <jepler> oh cool -- someone's working on a hal schematic editor again. http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?HalSchematicsUsingGschem
[15:06:09] <cradek> neat, and gschem >> eagle for this purpose
[15:06:11] <jepler> (I wonder who; I don't see a name)
[15:06:21] <SWPadnos> tomp was doing that before
[15:15:58] <tom3p> been fiddling again, looks promising, but its gschem to hal file
[15:47:02] <Dave911> >> probably the most "1" ratings I've seen on any product actually
[15:47:04] <Dave911> Wow and for a Seagate drive. IMO they have been the best HDs available for quite a while... Perhaps they have gotten too cheap. I've been having problems with PC power supplies - they got too cheap also. The cheap ones I have purchased in the last 1-2 years are simply junk waiting to kill your motherboard.
[15:48:33] <Dave911> >>oh cool -- someone's working on a hal schematic editor again.
[15:48:34] <Dave911> That is very cool... I'd really like to see that progress....
[15:51:02] <Dave911> This is slightly off topic - but do you guys have a feel for what Part programmers are making these days - the guys that take Autocad files, run them through CAM programs and make Gcode part programs and perhaps help setup CNC machines with tooling etc? Or simply hand code part programs? Is that a 40K per year job or a 50K per year job ... or less or more ??
[15:52:30] <cradek> no clue except I'm sure it varies by region
[15:52:41] <MattyMatt> round about that I'd guess. local market forces may apply
[15:53:25] <cradek> Dave911: you might dig around for similar threads on http://www.practicalmachinist.com/
[15:53:30] <cradek> it comes up all the time
[15:54:01] <Dave911> ok, thanks for the tips.
[15:54:06] <MattyMatt> when firms scream for someone like that, they really scream, so i guess first to arrive can name their price
[15:54:59] <MattyMatt> and then they look you in the eye, tell you about the crdit crunch, and name theirs
[15:55:39] <MattyMatt> first to blink loses. wear sixguns
[15:59:10] <MattyMatt> plan B is to convince a trad engineering firm that they need cnc :) start on a low wage, end up with a seat on the board
[16:00:07] <MattyMatt> that's my plan if all the local gcode jobs disappear the day I'm ready to work
[16:00:48] <archivist> jobs are disappearing
[16:03:51] <MattyMatt> at a faster rate than appearing, atm, but they are still appearing
[16:10:30] <MarkusBec> MarkusBec is now known as MarkusBec_away
[16:18:15] <MarkusBec_away> MarkusBec_away is now known as MarkusBec
[16:35:23] <tom3p> i just saw a post for a position in portland, they wanted a guy to program mastercam, build wedm fixtures, run 2 wedm's and offered 18$/hr. thats crap!
[16:37:48] <SWPadnos> well, if you get $18/hour for each machine, that's not too bad
[16:38:14] <SWPadnos> (2x$18 for the WEDMs, plus $18 for the fixture making, since you can do all that at once :) )
[16:45:56] <tom3p> zaphod beebelbrox had a 3rd arm fitted to help with his ski-boxing' ( or was that so he'd run 2 wedm's , a mil, a grinder and a cad system?)
[16:51:07] <SWPadnos> the second head also helps, I'm sure
[16:52:22] <anonimasu> hehe
[16:53:19] <gweepprefect> only if it's old-style BBC TV show two heads and not the recent movie interpretation of two heads.
[16:54:40] <tom3p> gottago, bbl
[16:55:47] <SWPadnos> I'm thinking of the books. I haven't seen the BBC or Hollywood shows
[16:56:07] <frallzor> hello girlieboygirls
[16:57:00] <archivist> its more the hairy gorilla type in here
[17:13:02] <livid> livid is now known as alexm
[18:17:32] <gweepprefect> first first CAM->real parts on my machine last night.. http://www.tangentaudio.com/?p=193
[18:17:56] <gweepprefect> s/first first/first/
[18:18:48] <frallzor> thought you wrote first fist cam
[18:19:19] <gweepprefect> heh
[18:19:29] <gweepprefect> operating on far too little sleep this week
[18:26:52] <frallzor> looks nice
[18:27:46] <frallzor> is that button made from pom?
[18:28:15] <gweepprefect> what's pom?
[18:28:38] <frallzor> a plastic
[18:29:02] <gweepprefect> it's corian (very dense plastic)
[18:29:32] <gweepprefect> it's an acrylic polymer
[18:30:02] <frallzor> i dont know all english terms but it could be pom afaik :P
[18:30:43] <gweepprefect> corian is most frequently used for kitchen and bathroom countertops
[18:31:18] <frallzor> hmmm might not be pom then no
[18:31:26] <frallzor> pom = delrin
[18:31:26] <gweepprefect> http://en.wikipedia.org/wiki/Corian
[18:31:38] <L84Supper> Corian iirc is the trademark by Dupont
[18:31:54] <gweepprefect> ah, ok, the P is polyacetal, which is what i knew as the generic name for delrin
[18:32:15] <gweepprefect> l84: yeah, and the inventors of it as far as i know
[18:32:27] <gweepprefect> it's hard and dense and fairly easy to machine
[18:32:51] <gweepprefect> i happened into buying about 300lbs of it many years ago
[18:34:06] <L84Supper> they add alumina for scratch resistance
[18:34:11] <frallzor> * frallzor misses his mill
[18:34:21] <frallzor> I want to mill NOW =(
[18:34:28] <gweepprefect> presumably it's also good at dulling my tools
[18:34:35] <archivist> mine is in bits :(
[18:34:56] <frallzor> Mine is non-existing :P
[18:35:04] <L84Supper> yeah, aluminum oxide is just shy of diamond for hardness
[18:35:06] <gweepprefect> i've had mine as a manual machine since about May, and as a CNC machine since last weekend
[18:35:43] <L84Supper> it's what the anodic layer becomes when aluminum is anodized after sealing
[18:36:21] <gweepprefect> and presumably the thin layer of naturally oxidized aluminum (any virgin piece you pick up will likely have a thin coating)
[18:37:56] <L84Supper> a few micron thick layer on aluminum doesn't dull the tools much but when it's mixed into the polymer it comes into contact with the tool all the way through
[18:38:11] <frallzor> http://vimeo.com/7030856 *input sad music here*
[18:38:40] <gweepprefect> i haven't done a ton of machining with it yet, i will keep an eye on tool sharpness
[18:39:16] <L84Supper> just use your solid diamond tools and it's no problem :)
[18:39:46] <gweepprefect> hehe.. those were the ones i bought for $2 each online, right?
[18:40:59] <L84Supper> or maybe genuine cubit zirconium .... not the fake cubit zircon :)
[18:44:07] <L84Supper> silicon carbide and Cubic boron nitride is harder than aluminum oxide as well
[18:45:13] <frallzor> lets change the subject, I miss the ability to mill too much now :P
[18:49:12] <L84Supper> anyone know the popular suppliers of t-slot framing in England?
[18:49:51] <archivist> L84Supper, the ally extrusion stuff?
[18:50:27] <L84Supper> archivist : yes
[18:50:50] <archivist> it all seems to be imported
[18:51:58] <L84Supper> I did find one of the only plants in the world that can extrude steel and it is in England
[18:52:11] <archivist> and I just took catalogs home this last week
[18:52:34] <archivist> thats nice to know
[18:53:36] <L84Supper> archivist : Bosch or Maytec? they seem to be everywhere
[18:54:11] <archivist> bosch rings a bell
[18:54:38] <archivist> im 10 miles from the pile of catalogs :(
[18:57:38] <gweepprefect> 80/20 is the common company for that stuff in the USA, not sure if they have a european branch
[19:00:38] <yoyoek1> hi
[19:02:28] <frallzor> hello mr girl
[19:02:45] <frallzor> or Miss Man if you prefer
[19:03:36] <yoyoek1> frallzor: ?
[19:04:07] <frallzor> Mr/Miss yoyoek1?
[19:04:36] <yoyoek1> !girl
[19:05:29] <yoyoek1> frallzor: did you sean some girl plaing with cnc mill?
[19:05:32] <cradek> frallzor: that's boorish, you know, especially the hundredth time
[19:06:03] <frallzor> well I dont know what ya all are
[19:06:39] <frallzor> and assuming thing allways comes back to bite you =)
[19:07:21] <cradek> "frallzor> hello girlieboygirls" is because you think we might not all be male and you don't want to be insensitive or assuming? bullshit
[19:07:38] <cradek> anyway, carry on
[19:07:40] <frallzor> no thats a hello
[19:08:26] <frallzor> if you get offended just say so and ill stop
[19:08:44] <SWPadnos> it's not particularly offensive, but it is kind of juvenile IMO
[19:09:33] <cradek> yeah, you acting in a laughable and boorish way doesn't offend me, it just makes me not take you seriously.
[19:09:44] <gweepprefect> agreed
[19:09:50] <cradek> anyway, like I said, carry on
[19:17:46] <frallzor> gweepprefect got a pic on the inside of that device?
[19:18:18] <gweepprefect> which device?
[19:18:28] <frallzor> or who posted the button-video? 09
[19:18:30] <frallzor> =)
[19:19:01] <gweepprefect> do you mean a PIC microcontroller, or a picture of the inside of the device?
[19:20:43] <frallzor> inside of the device, center of focus, the button
[19:21:20] <gweepprefect> no.. the enclosure doesn't exist yet, this was just testing out the idea
[19:21:28] <frallzor> oh ok
[19:22:48] <gweepprefect> the clear polycarbonate ring mounts to the faceplace, the button moves freely inside of it. behind the whole assembly is a PC board with a 12mm tactile switch directly behind the button. the LEDs go on the PC board as well
[19:23:06] <frallzor> smds?
[19:23:26] <gweepprefect> that's probably what i'll end up using
[19:23:30] <gweepprefect> a ring of them
[19:23:55] <frallzor> 4 should be enough if you looked at the 360 =)
[19:24:25] <gweepprefect> my light pipe kind of sucks, it didn't look great with 4 lower brightness LEDs, but i'll try it with 4 better SMD LEDs and see how it looks
[19:24:31] <gweepprefect> and also try to improve the light pipe in the next attempt
[19:24:49] <frallzor> whats the issue with it?
[19:25:05] <gweepprefect> getting even lighting across the whole ring
[19:25:21] <gweepprefect> i cheated for the picture that's at the end of the video, it's over a fairly bright lamp
[19:25:27] <frallzor> polished the surface that should "absorb" the light?
[19:25:47] <gweepprefect> no, no polishing yet, beyond a little work with 400 sandpaper
[19:25:55] <gweepprefect> i may try MEK vapor polishing
[19:26:07] <frallzor> clear surface on the inside and non-clear outside could work nicely
[19:27:18] <gweepprefect> i think it came out well considering it's my first attempt at going from CAM to part, ever.
[19:30:26] <frallzor> * frallzor wants to cam and mill too
[19:33:41] <cradek> looks neat. the glow will be cool.
[19:34:37] <gweepprefect> no matter what i do, it'll look better than what my friend has his amp in now, which is a couple of pieces of wood.. :)
[19:59:37] <frallzor> well wood is nice :P
[20:01:02] <frallzor> GOD I hate vista
[20:01:09] <frallzor> shitload of gigs MIA
[20:16:28] <frallzor> http://www.pici.se/p/kcdZDPJhG/ does this feel "real"?
[20:59:48] <pjm_> evening all
[21:57:12] <MattyMatt> I've seen nema17s as strong as my nema23s and only $9.95 from Jameco
[21:57:21] <MattyMatt> life is good in america :p
[21:57:42] <Jymmm> MattyMatt: prove it, lets see a torque curve graph.
[21:59:38] <Jymmm> MattyMatt: Nothing personal, just that there's a LOT of Snake Oil out there.
[22:02:01] <frallzor> who makes the curves? couldnt they be "faked" too then if not a third party checks?
[22:02:27] <MattyMob> http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=1581231
[22:02:32] <MattyMob> the contender
[22:02:55] <Jymmm> Sure, but usually anyone willing to go the effort has something to prove backing up their statements.
[22:03:28] <MattyMatt> ah I can read the pdf in comfort now
[22:03:42] <archivist> frallzor, there are testing machines available to measure steppers,but I didnt like the price when I saw one
[22:04:40] <MattyMatt> bleh 30 oz-in, I'm a FUD
[22:04:56] <MattyMatt> bigger is better
[22:05:30] <MattyMatt> strong for the size tho
[22:09:53] <SWPadnos> MattyMatt: http://www.automationdirect.com/adc/Shopping/Catalog/Motion_Control/Stepper_Systems/Motors_-z-_Cables
[22:25:41] <Jymmm> Came anyone think of a way to charge two 12V batteries that are wired in series for 24V ?
[22:25:55] <Jymmm> s/came/can/
[22:27:09] <frallzor> shouldnt a normal charger for 24V work?
[22:27:34] <Jymmm> These are gel-cell batteries.
[22:27:44] <Jymmm> 12v@7.5Ah
[22:28:24] <mikegg> two 12V chargers in series :)
[22:28:26] <frallzor> afaik you shouldnt do that anyway then
[22:28:40] <frallzor> if they take the charge differently it might damages them
[22:28:49] <frallzor> *damage
[22:29:26] <eric_unterhausen> a decent lead-acid charger will go to trickle charge at some point
[22:29:28] <Jymmm> Hmmm, What it I tap between the batteries, no nm.
[22:29:36] <eric_unterhausen> so you wouldn't want to use them in series
[22:30:12] <eric_unterhausen> we have some robots with 24v batteries, we charge them separately
[22:30:35] <Jymmm> eric_unterhausen: 24v batteries -or- 2 12v batteries in series?
[22:30:42] <eric_unterhausen> 2 12v in series
[22:31:04] <Jymmm> eric_unterhausen: and you charge them as 12V batteries individually?
[22:31:10] <eric_unterhausen> we have the series connection in a plug which is replaced when we are charging
[22:31:14] <archivist> battery means cells in series, two batteries is just more
[22:31:20] <Jymmm> Ok, that's what I thought.
[22:31:51] <Jymmm> I can't think of a way to do it without using a relay, and that seems icky.
[22:32:05] <MattyMatt> all batteries are in series anyway. if they are used together than it's just 12 cells instead of 6
[22:32:05] <eric_unterhausen> you could charge in series
[22:32:19] <eric_unterhausen> lead acid works ok that way
[22:32:31] <eric_unterhausen> it's just that you can't easily buy a 24v charger
[22:32:33] <Jymmm> eric_unterhausen: These are sealed gel-cell
[22:32:40] <frallzor> same shit
[22:32:42] <frallzor> but with gel
[22:32:46] <eric_unterhausen> charges the same way
[22:32:49] <frallzor> the acid is bound in the gel
[22:33:03] <MattyMatt> they need a current limiter, to stop them asplode
[22:33:19] <MattyMatt> they can't handle much hydrogen emission
[22:33:20] <LawrenceG> use a UPS to charge them..... smart ups 700 is a 24v system
[22:33:40] <Jymmm> LawrenceG: a lil overkill =)
[22:33:40] <LawrenceG> not real fast, but cheap
[22:33:46] <MattyMatt> golf cart charger?
[22:34:11] <LawrenceG> build a charger with a maxim free sample charger chip and a few parts
[22:34:39] <Jymmm> LawrenceG: Still doens't accoutn for two 12V bat in series
[22:35:16] <MattyMatt> if they are used together, so are in a similar state of charge, no problem
[22:35:24] <frallzor> get 2 cheap 12v-chargers and do it the old fashion way =)
[22:36:02] <Jymmm> frallzor: I could use one 12v charger, the batteries are still wored in series though. That's what I need to overcome.
[22:36:22] <MattyMatt> 4 way connector.
[22:37:09] <MattyMatt> on the vehicle plug, short the link, on the charger plug, have 2x12V chargers in parallel
[22:37:24] <Jymmm> The batery pack isn't removed from the load when being charged.
[22:38:06] <MattyMatt> then get a 24V charger
[22:39:28] <frallzor> get a ctek MULTI XT 4000
[22:39:31] <MattyMatt> universal laptop supply. "A at up to 24V. close
[22:39:42] <MattyMatt> ^2A
[22:40:11] <frallzor> ctek is the way to go, good and safe
[22:40:21] <Jymmm> ctek?
[22:40:34] <frallzor> http://www.ctek.com/EN-US/Default.aspx
[22:40:37] <Jymmm> Hmmm... http://www.batterystuff.com/battery-chargers/24-volt/gel-cell/GU2607A.html
[22:42:28] <MarkusBec> MarkusBec is now known as MarkusBec_away
[22:42:30] <Jymmm> How in the hell are they doing that?
[22:43:34] <eric_unterhausen> easy, isolated outputs
[22:44:08] <MattyMatt> fed from 2 windings
[22:45:25] <frallzor> keep in mind that charger is for 2x 12 not in series
[22:45:39] <Jymmm> But they do say 24V
[22:45:44] <Jymmm> 2610A Connections: The 2610A can be used on 2 12 volt independent batteries.
[22:45:44] <Jymmm> It may NOT be used for a 24 Volt system, the outputs may NOT be wired in
[22:45:46] <Jymmm> series. The 2610A may be used to charge one single battery. When doing
[22:45:48] <eric_unterhausen> yeah, if they are in series
[22:45:48] <Jymmm> this, a 12 Gauge jumper wire must be added between output posts DC +
[22:45:50] <Jymmm> #1 and DC + #2.
[22:46:15] <Jymmm> But the charger doens't have an output connection, which tis the only way I could see that it coudl do that.
[22:46:23] <frallzor> it can charge either 1x 12 or 2x 12,
[22:46:36] <Jymmm> That's still 12V, they say 24V
[22:47:19] <frallzor> or 2x 24v too even
[22:47:20] <Jymmm> and they say NOT for a *single* 24V battery.
[22:47:35] <Jymmm> so, nfc.
[22:48:25] <MattyMatt> yeah it looks like it won't do them while connected
[22:49:34] <DaViruz_> the description says 24v series explicitly, i'm guessing the reason it can't do a single 24V battery is something else
[22:49:46] <DaViruz_> improper load balancing between the output channels perhaps
[22:55:11] <frallzor> listen to DaViruz_ for minimal failure
[22:55:44] <MattyMatt> contact the supplier and manufacturer, and get the straight word
[22:55:51] <MattyMatt> s/and/or/
[22:56:08] <Jymmm> wth is a "AGM Battery" ? Looks like it's ref deep cell,
[22:56:13] <DaViruz_> those specifications is pretty poorly written
[22:56:15] <DaViruz_> ambigious
[22:56:23] <Jymmm> MattyMatt: I'm trying, on hold.
[22:57:09] <Jymmm> AGM == Absorbed Glass Mat - never heard of it
[22:57:33] <MattyMatt> just googled myself
[22:57:35] <Jymmm> http://www.dcbattery.com/agmtech.html
[22:58:29] <Jymmm> Nice.
[23:00:15] <MattyMatt> i want one in my car
[23:00:36] <MattyMatt> that won't stop the mystery drainage tho
[23:00:49] <MattyMatt> killed 2 batteries so far
[23:01:07] <Jymmm> I already told you how to troubleshoot that.
[23:01:33] <MattyMatt> yeah. no point until I have a new battery tho
[23:02:09] <MattyMatt> the old one is too shot to stay at 12V at 0A
[23:02:36] <mrbubble1> 24v lead acid packs charge at 27.6v (13.8v*2) that maybe too much if in circuit.
[23:03:30] <MattyMatt> 24 is just shorthand for 27.6. all chargers supply 27.6
[23:04:15] <Jymmm> http://www.westmarine.com/webapp/wcs/stores/servlet/westadvisor/10001/-1/10001/Electrical-Systems-24-Volts.htm scroll towards the bottom
[23:04:26] <Jymmm> dual voltage system
[23:08:23] <MarkusBec_away> MarkusBec_away is now known as MarkusBec
[23:18:03] <MattyXM> arr matey. hang the lubbers
[23:28:24] <MarkusBec> MarkusBec is now known as MarkusBec_away
[23:47:34] <Jymmm> Ok, they say when used to charge 2x12V=24V, it senses a "short" between the two charge banks then charges the system as a single 24V battery.
[23:47:59] <Jymmm> So somewhere in the charger there's probably a relay or some such thing.
[23:48:35] <Jymmm> Nice enough guy from batterystuff.com