#emc | Logs for 2009-06-30

[00:01:40] <Jymmm> skunkworks711: Then... DONT DO THAT!
[00:05:02] <Jymmm> =)
[00:30:27] <jimbo655> I figured out my problem last night... Defective reader on the linear scale. I have taken reader from the Z and put it in the X. What would you do for the Z scale. Buy heidenhain or go with something else?
[00:31:20] <kakeman> do i need some kind on interface board for drivers? opto isolation?
[00:32:09] <kakeman> when iconnect seperate drivers to LPT
[00:35:31] <kakeman> i don't think so
[00:37:03] <kakeman> good
[00:55:03] <PCW_> jimbo655: do either of the quadrature outputs change?
[00:55:05] <PCW_> If not maybe its a bad reader light bulb, its apparently tricky
[00:55:06] <PCW_> but some people have been successful replacing the bulbs
[01:19:56] <MikeGG> any encoder experts out there?
[01:20:07] <cradek> it's a trap!
[01:20:14] <MikeGG> heh
[01:20:16] <cradek> (just ask your real question - I bet someone can answer it)
[01:20:47] <MikeGG> what is the purpose of reading not A and not B?
[01:20:57] <MikeGG> you don't gain any additional position info right?
[01:21:12] <cradek> if you don't need to reverse, you don't need both channels
[01:21:19] <cradek> you will *lose* position information
[01:21:24] <MikeGG> just task the machine to count a higher frequency
[01:21:27] <cradek> because you lose half your resolution
[01:21:46] <cradek> yes this can be an advantage, if you are reading the encoder with something slow
[01:21:56] <SWPadnos> uh
[01:22:02] <MikeGG> my encoders have 20,000 counts per rev
[01:22:23] <SWPadnos> was the question about reading only one channel, or about using A and NOT A plus B and NOT B wires?
[01:22:24] <MikeGG> is that reasonable to try and count that on 3 axis machine through parport?
[01:22:27] <cradek> imagine a spindle encoder with a spindle that doesn't reverse. if you are reading it in software, you can turn the spindle twice as fast before reading fails, if you read only A
[01:22:34] <MikeGG> right SWpadnos
[01:22:47] <cradek> oh dangit
[01:22:55] <cradek> after all that, I misread the question
[01:22:57] <SWPadnos> ok, the only reason you would need the /A or /B wires is if you use differential receivers
[01:22:59] <SWPadnos> :)
[01:23:05] <SWPadnos> there's an unexpected not in there :)
[01:23:07] <cradek> differential signals are more immune to noise
[01:23:25] <cradek> you don't read them separately -- you hook them to a differential receiver
[01:23:38] <SWPadnos> hmmm. there's another reason, and that is if you have true differential transmitters, which I think would require use of differential receivers
[01:23:43] <MikeGG> thats what I thought. if you count all four signals. losing one count is less severe
[01:23:50] <SWPadnos> no
[01:23:54] <cradek> it's not four signals -- it's two
[01:24:00] <SWPadnos> a and not a are a pair of wires, with one signal on it
[01:24:03] <cradek> they are each a special noise-immune kind of signal
[01:24:04] <MikeGG> right
[01:24:07] <SWPadnos> think of not A as ground for A only
[01:24:38] <MikeGG> hrm
[01:24:55] <SWPadnos> do you know what differential signaling is?
[01:25:01] <MikeGG> not really
[01:25:02] <SWPadnos> ok
[01:25:33] <SWPadnos> basically, instead of having ground (always at 0) and a signal line which is either 0 or 1, differential changes both wires
[01:26:01] <SWPadnos> when the output is a zero, A is 0 and /A is 1 (probably 5V)
[01:26:11] <MikeGG> ah ok
[01:26:18] <MikeGG> wikipedia is good
[01:26:20] <SWPadnos> when the output is 1, A is 1 and /A is 0
[01:26:21] <SWPadnos> heh
[01:26:50] <MikeGG> the only thing that matters is the difference in signal
[01:27:03] <MikeGG> so if the wire picks up noise, the differencing cancels it
[01:27:04] <cradek> think of it like this: the signal comes in on two wires; to evaluate it, you subtract: A - /A = signal
[01:27:16] <cradek> special receivers do this for you
[01:27:18] <cradek> exactly
[01:27:32] <MikeGG> brillian
[01:27:33] <MikeGG> t
[01:27:35] <MikeGG> !
[01:27:50] <cradek> because it's (A + noise) - (/A + noise). notice the noise cancels.
[01:27:56] <MikeGG> got it
[01:28:27] <cradek> you can ignore /A and only consider A, but you lose those advantages.
[01:28:31] <MikeGG> so you don't get any additional pos'n information, just a more reliable signal. by reading /A, /B
[01:28:37] <cradek> yes
[01:28:58] <MikeGG> but only if you have a differential receiver?
[01:29:00] <cradek> and sometimes a faster top speed, since you don't have to do noise cancellation which necessarily slows down the reading.
[01:29:12] <cradek> yes
[01:29:28] <cradek> all real encoder reading hardware will take differential inputs
[01:29:38] <MikeGG> labview UMI ?
[01:29:47] <MikeGG> ...probably
[01:29:48] <cradek> flannel shirt ?
[01:29:52] <MikeGG> heh
[01:29:52] <cradek> (no idea)
[01:30:09] <MikeGG> National Instruments off the shelf motion control hardware
[01:30:43] <SWPadnos> * SWPadnos throws up
[01:30:57] <MikeGG> is good for science stuff but not real men stuff
[01:31:55] <MikeGG> heh. you would really blow chunks if you saw what my company paid for that stuff
[01:32:24] <MikeGG> is obscene
[01:33:35] <SWPadnos> I'm well aware of how expensive it is
[01:33:46] <SWPadnos> which is part of the sickening feeling
[01:34:47] <MikeGG> I'm trying to move away from it. but the encoders we are using are 20,000 counts/rev. I don't think the parallel port can handle that at the feeds we want.
[01:49:51] <Jymmm> SWPadnos: morning sickness?
[02:00:34] <jimbo655> PCW: Yes but thaey are dirty ( IE spikes where there should be none and erratic (output is not consistant)
[02:28:41] <jepler> skunkworks711: I finally got around to putting the eagle scripts up again, but of course under git now. http://git.unpy.net/view?p=eagle.git;a=summary
[02:36:11] <jimbo655> Ok here is another question... How does one automate the sensing of tool length when you are changing tools?
[02:37:09] <skunkworks711> jepler: Thanks - now I have to find the thread that I wanted to add it to ;)
[02:37:23] <cradek> there are two methods: use tool holders with repeatable lengths (and the tool table), or probe
[02:38:11] <jimbo655> Where does one come by a probe and how does this connect to the system?
[02:40:54] <cradek> jimbo655: you buy or make it; you can hook it to any compatible digital input you have. EMC doesn't care where the signal comes from - you hook it up in HAL like anything else.
[02:42:43] <jimbo655> So I am assuming it is just a limit switch or is it also an encoder or are there both types?
[02:43:43] <cradek> EMC's probing expects just a digital input, so it's more like a switch than an encoder.
[02:44:59] <jepler> it can be as simple as this, depending on your accuracy requirements: http://emergent.unpy.net/01216264526
[02:46:04] <jepler> (I touch off with the tool that requires very fine depth control; all subsequent tools have pretty loose depth requirements -- they just have to drill all the way through the circuit board I'm making)
[02:46:32] <jepler> (but as the blog entry mentions the short-term repeatability is pretty good)
[02:47:05] <jepler> contrary to what that photo shows, I probe at the base of the lever instead of the end
[02:48:18] <MikeGG> Check if you have continuity between your spindle and work holding. If your spindle has ceramic bearings it will be isolated. Then you can detect tool height using continuity
[02:50:07] <MikeGG> *should be isolated
[02:50:34] <cradek> you have to move VERY slowly to do that - any overshoot, and there always is some, is bad
[02:50:57] <cradek> (so I definitely wouldn't recommend that method)
[02:51:07] <jepler> the switch will continue to have some "give" after it closes..
[02:51:17] <cradek> right
[02:51:25] <MikeGG> http://www.theopticaledge.net/sites/default/files/MS-4-D.pdf
[02:51:30] <MikeGG> for your reading pleasure
[02:53:26] <Jymmm> jepler: you should try a long lever one and see what numbers you get
[02:56:37] <jepler> 'night guys
[02:57:33] <jimbo655> I would think with the optical and the switch It would take two passes for more accuracy. Fast to get close and a slow pass for for the final number.
[03:03:12] <toastydeath> molehill -> mountain?
[03:04:35] <Jymmm> That's a big ass 40 foot tall mole!
[03:04:45] <toastydeath> MOLEZILLA
[03:04:50] <Jymmm> LOL
[03:05:13] <jimbo655> Cradek: looks simple enough. 1 mil ait bad either.
[03:05:20] <toastydeath> after year soaking and mutating in Round Up (tm), he bursts from the depths!
[03:05:28] <toastydeath> anyway I have some machines with really ghetto tool probes
[03:05:39] <toastydeath> they're just metal button switches on an arm
[03:05:45] <toastydeath> and they get better than tenth repeatability
[03:05:52] <toastydeath> with zero effort or retakes on measurement
[03:06:07] <toastydeath> hand jogged
[03:06:30] <toastydeath> i'm not sure this is the brain surgery that is being discussed, but I could have missed part of the convo
[03:06:53] <cradek> I agree - make the simplest setup and test it first
[03:07:25] <Jymmm> tazer proximity sensor?
[03:07:59] <toastydeath> i suggest a switch with a flat metal button, lap it or something
[03:08:10] <toastydeath> if you jog slow, all your tools will trigger it the same way
[03:08:16] <toastydeath> done
[03:08:38] <cradek> I have a 1" flat round carbide insert I intend to use ... someday
[03:08:52] <toastydeath> sharp edge?
[03:09:18] <cradek> yeah but it's about the flat - I'd braze something to the back of it
[03:09:32] <toastydeath> hm
[03:10:02] <MikeGG> it is simple and it works very well.
[03:11:12] <Jymmm> I like the "I'm not touching you" proximity sensor... When you get close, you get socked in the arm!
[03:11:23] <toastydeath> we sent parts out the other day to get passivated, stainless steel
[03:11:35] <toastydeath> platers sent back parts that had like, carbon suet on them
[03:11:55] <toastydeath> they're ruined, but they want me to machine them anyway so they can reject shiny parts
[03:12:20] <Jymmm> toastydeath: job security?
[03:12:45] <toastydeath> i guess, i've got tons of that - the list of things I need to do this week is long, and this is going to take at least two more days
[03:14:01] <pcw> jimbo655: tried cleaning the reader? or swapping 11uA to TTL converter channels, maybe one is bad...
[03:14:02] <toastydeath> there's a +.0005/-.0000 slot on the part, and this carbon-ish stuff has corroded large pits in the material - 1"-2" wide and .010"-.015" deep
[03:14:18] <toastydeath> i'm not sure on what planet a +.015 error on a +.0005 slot is acceptable
[03:14:28] <toastydeath> but we're going to find out, goddamnit!
[03:18:29] <jimbo655> Here is what my work room looks like someday it may grow up to be a real shop.... http://i559.photobucket.com/albums/ss35/jimbo-colleen/IMG_0088.jpg
[03:20:06] <toastydeath> hey, cool
[03:21:43] <toastydeath> well on the way
[03:21:51] <toastydeath> not much need for a lathe?
[03:22:19] <cradek> they say if you only have room for one, get a lathe - I don't think I agree
[03:23:14] <cradek> I think I use the mill more, and for a bigger variety of stuff.
[03:23:57] <jimbo655> I have have a small 9x20 lathe have to find a hole for it. During my time as a machinist 25 years ago I worked with mills mostly. Lathes are not my favorite.
[03:24:31] <jimbo655> Maybe I will put the lathe in the wood shop.
[03:26:00] <toastydeath> cradek: i agree, it's really hard to say "this is what everyone does"
[03:26:07] <toastydeath> i really like lathes, though
[03:26:30] <cradek> I definitely use both in most nontrivial projects
[03:26:58] <cradek> but a boring head on the mill is more useful than a terrible lathe milling attachment
[03:27:12] <toastydeath> a boring head is a proper tool
[03:27:16] <toastydeath> a milling slide on a lathe....
[03:27:24] <toastydeath> not so much.
[03:29:17] <toastydeath> Now, get yourself a horizontal boring mill
[03:29:22] <toastydeath> done
[03:29:36] <cradek> I must not need it
[03:29:48] <toastydeath> ?
[03:29:56] <cradek> if I wanted to use up another chunk of floor space, I'd get a surface grinder first
[03:30:08] <toastydeath> good choice.
[03:30:43] <toastydeath> i just like the boring mill asthetic
[03:31:10] <cradek> heh
[03:32:09] <Jymmm> I tink it's funny that you have to choose your toys by the ability of floor space
[03:32:32] <cradek> funnier than by aesthetics?
[03:32:33] <Jymmm> floor/storage space
[03:32:46] <jimbo655> All I have for floor space is a 20 X 20 area under the garage. I have limits of what I can pile on My structure. But I will make do.
[03:32:47] <cradek> limited space is a fact of life
[03:32:47] <Jymmm> cradek: No, that that funny I guess....
[03:33:01] <cradek> I have a lot more of it than some - a lot less than others
[03:33:24] <geo01005_emc> anybody know anything about the -g option on pyvcp?
[03:33:24] <toastydeath> I'd take a boring mill over a horizontal, i guess
[03:33:29] <toastydeath> and have that as my sole milling machine
[03:33:34] <toastydeath> er, vertical
[03:33:36] <Jymmm> Not my fault you guys dont have 8ft wall that can support 50,000 lbs
[03:33:52] <Jymmm> :)
[03:34:10] <toastydeath> hey, don't forget the 14' garage door required.
[03:34:13] <jimbo655> The joys of living on a cliff
[03:34:36] <Jymmm> toastydeath: No need, just hinge the roof like a hatchback
[03:34:43] <toastydeath> hydraulics!
[03:34:47] <cradek> I had to machine a part on an angle plate saturday - it was a pain. I'd hate to have to do that all the time - vertical is nice.
[03:34:50] <toastydeath> man can you imagine the hinge
[03:35:00] <toastydeath> i dunno, i work horizontal all the time
[03:35:01] <Jymmm> nah, counterweight
[03:35:10] <toastydeath> I like it better than vertical mills for most stuff
[03:35:15] <cradek> huh
[03:35:24] <cradek> it's true I've never used one
[03:35:39] <toastydeath> it's got some quirks, for sure
[03:39:29] <Jymmm> cradek: When I said wall mount, I meant with the tool configuration rotated 90 degrees
[03:40:44] <Jymmm> I've been a packrat for so long that I can pack things in to 2" of the ceiling (thermal expansion), and 8" if there are sprinklers =)
[03:41:04] <Jymmm> And dont ask how I know 8" clearnace is required
[03:43:53] <toastydeath> a romantic date with a fire extinguisher?
[03:44:12] <Jymmm> Fire Inspector
[03:46:40] <toastydeath> oh,
[03:46:41] <toastydeath> .
[03:53:58] <Jymmm> Does anyone have a Bakers Square in theri area?
[04:50:43] <ds3> there is one in the bay area unless that closed down
[05:45:56] <Jymmm> They filed for BK in Calif
[05:46:26] <ds3> oh
[05:46:39] <ds3> guess I don't go up to Newark often enough to notice it
[05:46:46] <Jymmm> Closest I've found is Chicago
[06:57:00] <micges1> micges1 is now known as micges_plasma
[07:13:41] <hnu> how hard is it to set up hal for a stg card, would it differ from machine to machine?
[07:18:31] <hnu> this machie is working under emc1, could info from its emc.ini help in setting up hal?
[08:06:01] <micges> hnu: machine is working under emc1 and you want to set up emc2 configuration for it?
[09:25:04] <piasdom> g'mornin all
[12:08:56] <kakeman> what is IDC connector?
[12:10:27] <kakeman> http://en.wikipedia.org/wiki/Insulation-displacement_connector maybe
[12:30:10] <jepler> kakeman: yes
[13:51:14] <BJT-Work> When you connect a differential encoder to a 5i20 the A-, B-, and Z- just go to the ground pins (even pins)?
[13:55:32] <pcw> BJT: if you are connecting directly to a 5I20 (which only has single ended inputs),
[13:55:33] <pcw> the A-,B- and Z- remain unconnected
[13:55:35] <pcw> (they are outputs so you dont want to short them to ground)
[13:55:51] <BJT-Work> ok thanks Peter
[13:57:52] <pcw> If the outputs were truly differential (floating)
[13:57:54] <pcw> grounding the - outputs would make sense
[13:57:55] <pcw> but the plus and minus outputs are just the same signal
[13:57:57] <pcw> inverted but both referenced to ground
[13:58:01] <archivist> pcw, do you have cards for 4-20 ma analog in out?
[13:58:28] <archivist> pcw /me quoting for a job
[13:59:16] <pcw> No. not much analog I/O yet
[13:59:59] <archivist> hmm ok I just hate the NI and AB ptices
[14:00:25] <BJT-Work> thanks pcw, that kinda makes sense to me :)
[14:03:36] <BJT-Work> wow 50 BMG on sale for $3.99 each
[14:08:36] <geo01005> skunkworks, SWPadnos, ever have any USB problems with your goal3+ board?
[14:13:41] <skunkworks_> no
[14:13:52] <skunkworks_> geo01005: why - what is it doing?
[14:14:07] <geo01005> I'm wondering if I got a junk power supply, or if the motherboard is bad.
[14:14:50] <geo01005> Any USB device I have plugged in turns on for a few seconds, flickers and then stays off.
[14:15:13] <geo01005> I have only tried USB powered devices though.
[14:17:10] <geo01005> I was going to try to find another power supply to try.
[14:17:48] <geo01005> I wasn't very wise and just got a barebones kit, junk power supply and case.
[14:30:41] <skunkworks_> yeck
[14:34:44] <geo01005> yeah, I'll say.
[15:17:41] <skunkworks_> I have used some pretty crappy power supplys with success - like <$10 :)
[15:28:51] <skunkworks_> geo01005: what are you trying to hook in?
[15:29:05] <skunkworks_> (I could test it here)
[15:34:22] <skunkworks_> LawrenceG: How is it going?
[15:37:14] <jepler> hi jmkasunich_
[15:37:51] <geo01005> skunkworks_, right now I would be happy if the stupid keyboard and mouse would work. Bet later I'm going to be using a USB touch screen.
[15:38:17] <skunkworks_> wow - I am sure that is working correctly on my systems. :)
[15:38:49] <skunkworks_> uhoh - now jmkasunich_ is having connectivity issues? It is spreading ;)
[15:38:57] <jepler> wasn't usb pretty critical on swp's systems too?
[15:39:12] <skunkworks_> that was for the atom boards..
[15:39:15] <skunkworks_> IIRC
[15:39:16] <jepler> oh
[15:39:31] <skunkworks_> I really don't know what he was using the goal boards for.
[15:39:33] <geo01005> I would have got an atom, but I needed two pci slots.
[15:39:55] <skunkworks_> the goal has much better latency results than the atom
[15:40:26] <geo01005> I don't really need the supper high latency, I'm running hm2 stepgen.
[15:40:31] <skunkworks_> The atom is consistanly just under 20k while the goal is usually well under 10k
[15:40:34] <geo01005> low latency rather...
[15:40:50] <skunkworks_> yah - not as critical.
[15:41:02] <geo01005> Has anybody had USB problems like this on any board?
[15:41:19] <geo01005> Am I in my right mind to think it may be the power supply?
[15:41:32] <skunkworks_> can't say that I have. you say the keyboard also just powers up then powers down?
[15:42:01] <geo01005> yeah, powers on, works for a few second, then flickers and dies.
[15:42:15] <geo01005> I have been stuck using ps2 keyboard and mouse for now.
[15:43:22] <skunkworks_> stupid question - do you have both power connectors plugged into the motherboard (normal one and the 4 pin?)
[15:44:13] <geo01005> yeah, both connectors connected.
[15:44:45] <skunkworks_> hmm - internet just went out at home...
[15:45:35] <LawrenceG> skunkworks_, good morning, going great here new servo design is doing well... built a test stand to torture it
[15:45:51] <skunkworks_> nice! any pictures?
[15:45:53] <skunkworks_> ;)
[15:47:09] <LawrenceG> http://imagebin.ca/view/tydai2Y.html
[15:49:01] <LawrenceG> skunkworks_, those 135w scooter motors make quite a good servo motor...
[15:49:13] <LawrenceG> not bad for $15
[15:49:47] <skunkworks_> heh - that is awesome - love the 'jog' wheel (that is exactly how I hooked the mouse in to do these tests http://www.electronicsam.com/images/KandT/servostart/Fastermouse.png
[15:49:59] <skunkworks_> Nice!
[15:51:01] <skunkworks_> what kind of reduction are you thinking for your machine?
[15:51:06] <LawrenceG> yea.. easy encoder for testing
[15:52:35] <LawrenceG> actually, the motor has enough torque for direct drive, but because of critical speeds, it doesnt make sense to spin the leadscrew much faster than 1000rpm.. so 3-1 will fit very nicely
[15:53:01] <LawrenceG> of 1 to 3 motor to leadscrew
[15:54:57] <LawrenceG> that encoder in the picture is 1000 lines/rev (4000counts/rev).. its kind of large, but I have a bunch that were the right price (dumpster special)
[16:10:16] <skunkworks_> Nice industrial package
[17:42:54] <skunkworks_> crap - I missed jeplers post to the list. Oh well - redundancy is good - redundancy is good
[17:58:11] <eric_unterhause1> what post?
[17:59:31] <eric_unterhause1> about the freezeup?
[18:02:09] <archivist> a and thread
[18:02:13] <jepler> > I can see why 99% of computers LINUX free.
[18:02:24] <jepler> that guy is just sooooo ....
[18:02:29] <jepler> I can't figure out what word to end that sentence with
[18:02:35] <archivist> hehe
[18:03:11] <archivist> I just cant look sometimes
[18:04:52] <cradek> he seems to have trouble with virtually everything he tries. if only we could figure out what the common element is.
[18:07:07] <jepler> * jepler bites his tongue
[18:07:10] <jepler> I shouldn't have said anything
[18:07:15] <jepler> but that remark tweaked me
[18:07:22] <cradek> me too me too
[18:34:21] <skunkworks_> http://skycraftsurplus.com/index.asp?PageAction=VIEWPROD&ProdID=1877
[18:35:45] <skunkworks_> there where 20 this morning. - I ordered 12. The second I ordered them they switched to 'out of stock'(6 for my self and the rest for friends) so I don't know if I am getting them yet.
[18:36:45] <jepler> that stinsk
[18:46:53] <skunkworks_> oh well - just waited too long. :)
[18:47:25] <cradek> have you called?
[18:50:06] <skunkworks_> no - just waiting for a tracking number - guess I could call. Or email
[18:54:04] <skunkworks_> cradek: how was the runout on the pullys you bored out?
[18:58:26] <jepler> I don't think we measured after the reaming
[18:59:39] <cradek> I have only done one - the hole ended up not quite parallel to the pulley teeth, but the runout looks very small (looks like wobble, not runout)
[19:01:27] <skunkworks_> ah - cool
[19:02:08] <cradek> I ran a DTI up the pulley hole to the middle of the toothed region, and used that reading to center it
[19:02:27] <cradek> so the belt tension doesn't vary, even though the hole is imperfect
[19:02:27] <alex_joni> cradek: I think the common element is "trying"
[19:02:48] <cradek> I hope to do better next time, even though it was plenty good enough
[19:03:34] <skunkworks_> I was trying to decide if I wanted to get 1/4 inch hole pullys and make an adaptor. (turning the outside and boring the hole all in one setup.
[19:09:23] <jepler> it seems like that would be trouble for the setscrew
[19:09:53] <skunkworks_> I would run the setscrew through the adaptor.
[19:10:09] <skunkworks_> so it was tightening on the flat of the servo shaft.
[19:10:23] <anonimasu> if I had a cnc lathe, I'd make thoose conical couplings
[19:11:13] <archivist> dont need cnc to make taper lock
[19:11:44] <anonimasu> ofcourse, but it helps :)
[19:11:45] <micges> what behaviour is expected when I'm settings huge (1.0 mm) backlash? huge ferror?
[19:12:24] <micges> I'm asking becouse I had 10 mm ferror..
[19:13:25] <jepler> stepper? servo?
[19:13:32] <micges> stepper
[19:13:45] <micges> mesa
[19:13:52] <jepler> increase acceleration headroom
[19:14:08] <jepler> backlash uses "more acceleration" to take up the backlash in a controlled fashion
[19:14:28] <anonimasu> that sounds like the backslash on my big mill
[19:14:28] <jepler> It's either an additional acceleration equal to the inifile acceleration, or 1/2 of inifile acceleration, I forget which
[19:14:53] <anonimasu> it started compensating it smoother when I turned up the acceleration
[19:14:54] <micges> I see, thanks
[19:15:14] <anonimasu> before it got lagging behing and gain grew trying to take up backslash..
[19:15:24] <anonimasu> and it made the table jerk on reversal
[19:15:36] <anonimasu> (when running a handwheel)
[19:17:19] <jepler> are there any common computer screens with a wider ratio than 16:9? or is that the limit?
[19:18:32] <alex_joni> 1.85:1 and 2.39:1 are somehow common
[19:18:40] <alex_joni> but not so much for PC screens
[19:19:15] <alex_joni> 2.39:1 is for 35mm film ;)
[19:20:42] <alex_joni> there are some 17:9 displays
[19:21:00] <alex_joni> http://en.wikipedia.org/wiki/File:Vector_Video_Standards2.svg
[19:34:33] <skunkworks_> I emailed the company and they think they can fill the order. :) they found a descrepency in their inventory and took it down for a bit until they can get them counted.
[19:35:39] <skunkworks_> They think the have more
[21:44:39] <geo01005> the power supply dosen't seem to be cause of my USB problem.
[21:44:50] <dmess> hi all
[21:58:01] <jmkasunich_> jmkasunich_ is now known as jmkasunich
[21:58:19] <jmkasunich> that's better
[21:58:33] <jmkasunich> I wouldn't call one dropout "connectivity issues"
[21:58:44] <jmkasunich> especially since we've had thunderstorms here
[21:59:00] <jmkasunich> regarding boring/reaming of timing belt pulleys (I read back):
[22:00:03] <jmkasunich> I've done a couple different sizes. I stuck a scrap of fat aluminum rod in the lathe, bored about 3/8" deep to fit over the pulley, turned the OD just enough to get it concentric, then parted (or sawed) off the ring
[22:00:15] <jmkasunich> OD has to be bigger than the pulley flanges
[22:00:35] <jmkasunich> then split it, so you can put the two halves together over the flanges, and chuck (or collet) the outside of the ring
[22:08:29] <alex_joni> good night all
[22:30:25] <Jymmm> Eeeesh.... Bombed the garage last night. Even with the garage door open and three fans going (one of them can usually air out the house in 20 minutes) it took 3 hours to air out the garage!!!
[22:30:59] <Jymmm> And that's just *most* of it - enough to breath that is =)
[22:31:27] <SWPadnos> I told you to stop eating beans
[22:31:54] <SWPadnos> oh look. dinner
[22:34:54] <skunkworks> jmkasunich: Neat idea
[23:19:08] <dmess> sup Alpha
[23:24:54] <L84Supper_> has anyone looked at or started on a port of EMC to ARM ?
[23:25:20] <dmess> Wifey is on the move OUT... and I'm keeping the kids and house... attrition WORKS...
[23:25:25] <L84Supper_> I thought I had heard rumors in the past
[23:28:08] <L84Supper_> L84Supper_ is now known as L84Supper