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[00:39:24] <KimK> Tecan: There was at one time, not sure if it's still there, let me check.
[00:45:02] <KimK> Tecan: It says it's working, but I'm not sure what the torrent link is. Will the tracker URL do?
[00:48:21] <Jymmm> Hi KimK
[00:49:32] <KimK> Hi Jymmm, how are things?
[00:50:00] <Jymmm> KimK: Hanging in there as usual =) yourself?
[00:51:34] <KimK> Yes, same here, no big news.
[00:53:21] <Jymmm> Well, I guess that's a good thing (tm)
[00:57:28] <KimK> Tecan: OK, try this for the torrent link:
http://linuxtracker.org/download.php?id=eebd5ddae35ed3f9a0438efd0afbea467f456af1&f=ubuntu-10.04-linuxcnc1-i386.iso.torrent
[00:58:13] <KimK> Jymmm: Working on any projects lately?
[00:59:05] <Jymmm> KimK: Only cleaning up the chaos that is my garage. I can almost see bench top again =)
[01:00:21] <KimK> Jymmm: Ha, yes, I need to do something like that too.
[01:01:05] <Jymmm> KimK: Well, more of a necessity. Once cleaned up, then I can work finish a couple projects for the laser
[01:03:39] <KimK> Jymmm: That sounds interesting, maybe post some videos when you get it all sorted out?
[01:05:01] <Jymmm> KimK: Heh, not THAT type projects. I need to plumb in air and create a cutting table for the laser potentially with vacuum holddown using the exhaust blower as sucking power
[01:07:15] <KimK> Jymmm: Hey, two birds with one stone, I like it. Wait, vacuum holddown = low/no flow and high vacuum, while exhaust = high flow and low vacuum. Problem?
[01:08:31] <Jymmm> KimK: Adjustable deflector.... to be able to have JSUT enough holddown while still having enough exhaust too
[01:09:13] <Jymmm> KimK: Most smoke/fumes will come from the underside
[01:10:49] <KimK> Jymmm: Yes, that might work, I forgot that with a laser your cutting forces are pretty low, lol.
[01:11:25] <Jymmm> Yeah, just need to keep the thin material from curling mostly.
[06:50:26] <IchGucksLive> Hi all around the world
[06:56:01] <Guest85744> was schaust du denn live?
[07:03:14] <IchGucksLive> alles
[07:03:30] <IchGucksLive> Mount everest momentan die kraxeln schön
[07:03:40] <IchGucksLive> eng channel speking
[10:14:19] <mrsun> hmm, T nuts etc, how do you measure them ? ... it says "T nut for 10mm T slot" ... is that the slot that the bolt goes throught, or the bottom of the slot width etc?
[10:27:20] <cradek> the top skinny part
[10:28:05] <mrsun> so the place where the bolt goes throught then ? :)
[10:28:23] <mrsun> http://www.te-co.com/detail/tooling-components/t-slot-nuts-la.jpg <-- the B part there? :)
[10:30:37] <A2Sheds> yes the B
[12:07:28] <mrsun> hmm, seems the sieg x1 has 8mm ...
[12:07:35] <mrsun> smalest set of hold downs i can buy have 10mm
[12:12:43] <jdhNC> http://littlemachineshop.com/products/product_view.php?ProductID=2039&category=1062702310
[12:14:54] <mrsun> http://www.miteebite.com/products/t-slot_toe_clamp_e.html oh nice =)
[12:15:15] <mrsun> jdhNC, thats from littlemachineshop, not there im buying stuff atm :P
[12:41:57] <IchGucksLive> Hi all im loosless in finding a sketch to drive a DC brushed 24V 4A servo with A/B encoder to drive on parport of linuxcnc
[12:42:10] <IchGucksLive> someone can help me on this
[12:42:45] <jdhNC> do you have a servo drive?
[12:43:04] <IchGucksLive> no only the motor
[12:43:10] <IchGucksLive> no driver stage
[12:44:19] <IchGucksLive> http://www.youtube.com/watch?feature=endscreen jdhNC
[12:44:36] <IchGucksLive> Faulhaber same as in the viio
[12:44:42] <IchGucksLive> video
[12:57:19] <skunkworks> IchGucksLive: do you use eagle?
[12:57:57] <IchGucksLive> yes
[13:00:32] <skunkworks> IchGucksLive: probably over-kill and only lightly tested...
http://www.electronicsam.com/images/KandT/servostart/schem/latestcurrentlimit/
[13:02:34] <IchGucksLive> skunkworks: thanks
[13:05:13] <skunkworks> use at your own risk. :)
[13:07:22] <mrsun> skunkworks, that capacitor kinda steals the show doesnt it? :P
[13:07:30] <skunkworks> :)
[13:09:31] <mrsun> anyone more have trouble with youtube?
[13:15:03] <jdhNC> other than your link being incorrect?
[13:19:05] <skunkworks> seems to work here.
[13:19:25] <skunkworks> (youtube - not IchGucksLive's link)
[13:22:45] <IchGucksLive> B)
[15:07:57] <TRW_Aguascalient> Hi, some body with experience using the mesa 7i37COM isolation card?
[15:10:52] <cradek> I'm not sure what COM means, but I think the 7i37 is among the most commonly used mesa cards
[15:11:02] <cradek> so please ask your real question and I bet someone can help
[15:12:28] <TRW_Aguascalient> from the manual
[15:12:29] <TRW_Aguascalient> The 16 opto-isolated inputs have a common negative input and will
[15:12:30] <TRW_Aguascalient> operate with input voltages from 4 to 24 V.
[15:13:09] <cradek> aha, apparently COM means common
[15:13:14] <TRW_Aguascalient> this board has a connector labeled INC that is the common for all the inputs
[15:13:27] <cradek> this saves making a lot of little jumper wires
[15:15:48] <TRW_Aguascalient> if i connect the negative side of a 24Vcd source to INC and the positive side to IN0 nothing happens, no one of the surface mounted leds turn on and the value of the pin related with that input never changes from TRUE
[15:17:05] <cradek> my understanding is that the LEDs are not supposed to turn on in normal operation. They are indicators that you've hooked it up backward.
[15:17:14] <jdhNC> heh really?
[15:17:39] <andypugh> The onboard LEDs on at least some of the Mesa boards don't operate if the card isn't being polled.
[15:17:53] <jdhNC> what do you have the 7i37 hooked up to?
[15:18:01] <cradek> so if the related input never changes to true, perhaps you have a problem in your hal configuration, like not having added the card's read function to a thread, or you have an incorrect firmware, or are monitoring the wrong hal pin.
[15:18:28] <andypugh> Have you added hm2_5i23.0.read (or similar) to a thread. Has the watchdog bitten?
[15:18:30] <cradek> jdhNC: yes they are the reverse protection diodes that just happen to light up! :-)
[15:18:49] <jdhNC> that's kind of cool, nice side effect
[15:18:59] <TRW_Aguascalient> i can write the outputs with out trouble
[15:19:03] <jdhNC> I have a 7i37TA sitting here, but never hooked up
[15:19:19] <TRW_Aguascalient> is connected to a 5i20
[15:19:47] <mrsun> would the magnets of a magnet table suck throught thin paper? :)
[15:19:50] <mrsun> or tape
[15:19:58] <mrsun> or does it have to have real electrical connection ?
[15:20:56] <TRW_Aguascalient> no the watchdog has not bitten
[15:22:25] <mrsun> the table topside is off 0.02mm ... but it still needs work, so i was thinking of getting it ground now that ive measured it... so i was thinking of shimming the low side to match the high side while grinding, after that all surfaces should be flat to eachother :P
[15:22:32] <mrsun> atleast flat enough =)
[15:23:29] <andypugh> mrsun: Should be OK.
[15:23:54] <andypugh> mrsun: But why not shim under the table?
[15:24:07] <mrsun> andypugh, eh ? :)
[15:24:29] <mrsun> its under the table while grinding it
[15:24:31] <andypugh> Shim to level the table, not to level the work on the table
[15:24:48] <mrsun> andypugh, well cant realy shim the table on the machine can i :P
[15:25:01] <andypugh> I don't know, I am confused now.
[15:25:25] <andypugh> Normally you would grind the top of the table on the machine.
[15:25:43] <mrsun> while grinding the table i need to shim one side of it to make the top side of the table flat to the ways of the table
[15:26:01] <andypugh> Of course, if that has been done too many times before, then you might not want to do that.
[15:26:18] <TRW_Aguascalient> thanks for the tip about the leds, is in the manual but for a not native speaker some times is hard to catch the details
[15:26:47] <cradek> TRW_Aguascalient: did you set the parameters related to making the pins inputs?
[15:26:48] <andypugh> mrsun: No, if you are truing the table in-situ then you want it bolted down in place as it will be used.
[15:27:09] <mrsun> "in-situ" ?
[15:27:38] <andypugh> TRW_Aguascalient: I think cradek probably has it.
[15:28:00] <andypugh> hm2_5i23.0.gpio.001.is-input = true?
[15:28:05] <TRW_Aguascalient> i just set the outputs with is_output
[15:28:37] <andypugh> Ah, yes, it's that way round isn't it?
[15:28:47] <TRW_Aguascalient> i will tray i didt see that part in the hm2 section of the integrators manual
[15:29:05] <andypugh> TRW_Aguascalient: No, ignore me, I am wrong.
[15:29:06] <cradek> oh right, they default to input
[15:29:08] <cradek> hmm
[15:29:21] <cradek> are you positive you have the right bits?
[15:29:37] <mrsun> andypugh, what does "in-situ" mean ?
[15:29:48] <andypugh> in place?
[15:30:18] <cradek> TRW_Aguascalient: which 5i20 connector is it plugged into?
[15:30:57] <mrsun> andypugh, i dont see how much difference it would do ? :) as nothing realy presses on the table while its in place more then that very very small force from the gibs? :)
[15:30:57] <TRW_Aguascalient> p3, in p2 i have a 7i33 working nice with tow servos
[15:31:02] <andypugh> mrsun: Lets rewind... You have a magnetic table on a surface grinder, and the magnetic table isn't true to the ways?
[15:31:24] <mrsun> andypugh, no, the magnetic table is on the surface grinder and i want my table for the mill ground =)
[15:31:28] <mrsun> using that magnetic table :P
[15:31:33] <andypugh> Ah!
[15:31:47] <cradek> TRW_Aguascalient: check dmesg after loading the driver, to make sure you have the right pin numbers
[15:32:30] <andypugh> TRW_Aguascalient: Are you in Axis?
[15:32:32] <cradek> first one is hm2_5i20.0.gpio.025.in I think?
[15:32:43] <TRW_Aguascalient> ok i will thaks for the help guys, is so nice to have help like this
[15:33:20] <cradek> I think the inputs for 7i37 on P3 are hm2_5i20.0.gpio.025.in through hm2_5i20.0.gpio.039.in
[15:34:05] <cradek> also make sure hm2_5i20.0.read is in a running thread
[15:42:04] <mrsun> andypugh, so you think putting something realy thin inder one side wouldnt do anything even if its not made of steel ? :)
[15:42:54] <dvmirc> last time i checked magnetism acted through paper
[15:43:37] <andypugh> mrsun: I reckon so. What's the worst that can happen?
[15:43:53] <mrsun> andypugh, that the table moves and ruins stuff? :P
[15:44:28] <mrsun> aluminiumfoil aparently is 0.01 - 0.015mm thick, i guess i could use that =)
[15:44:39] <andypugh> Better might be to support the table on the bearing surfaces (you would need precision magnet-blocks)
[15:45:08] <andypugh> Shimming one end might bend the table, by the way.
[15:45:31] <mrsun> andypugh, its a whole side of the table that is 0.02 lower then the other side
[15:45:44] <mrsun> the bearing surfaces i cant get to without using something to offset it up like 1cm
[15:46:09] <andypugh> mrsun: Yes, but what do you know about the surface that you are going to have against the magentic table?
[15:46:43] <andypugh> It's no hood shimming the bottom face of the table if the ways are offset to that.
[15:46:47] <andypugh> (no good)
[15:46:54] <mrsun> andypugh, that its flat according to my measurments and its 0.02mm off :P
[15:47:23] <mrsun> andypugh, the surfaces are exactly the same amount off as the bearing surfaces according to my measurments
[15:47:29] <andypugh> mrsun: OK.
[15:47:31] <mrsun> so i guess the chinease has done something right atleast :P
[15:47:40] <mrsun> gonna measure some more tomorrow just to be sure =)
[16:00:08] <Jymmm> jepler: Just FYI... ~jepler@ ---> emc <--- /developer/pdpc.professional.jepler)
[16:00:28] <cradek> Jymmm: we're working on that... it's complicated
[16:00:28] <jepler> Jymmm: we're working on it.
[16:00:38] <cradek> thanks
[16:00:56] <Jymmm> It's all good, just so much crap thought it might have been an oversite.
[16:01:38] <Jymmm> =)
[16:31:01] <slime> finished
[16:31:04] <slime> http://amalas.eu/~slime/PROJECTS/CNC/vespa/
[16:31:39] <alex_joni> cool
[16:32:07] <bill20r3> Mmm vespa
[16:32:18] <bill20r3> I loves me some scooters.
[16:32:43] <pfred1> it doesn't look finished
[16:33:05] <slime> what?
[16:33:08] <slime> y?
[16:33:35] <bill20r3> I think that's a lambretta.
[16:33:36] <pfred1> it is in pieces
[16:33:38] <bill20r3> :-)
[16:34:18] <alex_joni> pfred1: last pic ;)
[16:34:20] <slime> pfred1: take a look at the last picture
[16:34:51] <pfred1> oh OK I didn't notice it was a picture I thought it was some other kind of file
[16:35:14] <pfred1> slime yes finished in
http://amalas.eu/~slime/PROJECTS/CNC/vespa/Holz-Laufrad_Vespa_Birke_gewachst_-_miokij_-_ueber_dawanda_com.03.jpg
[16:35:52] <pfred1> slime you make that seat yourself?
[16:36:15] <slime> my wife
[16:36:32] <pfred1> well she did a great job on it really caps it off
[16:36:34] <slime> she also made the design, cad, cam
[16:38:45] <slime> and now, u can buy one here
[16:38:47] <slime> http://de.dawanda.com/product/23573021-Holz-Laufrad-Vespa-Birke-gewachst
[16:40:51] <pfred1> there is a lot of information about G Code in the User Manual but I'm still not feeling like I am learning how to write the stuff is there any other reference that can show me how to write a simple program?
[16:41:44] <slime> why dont use a cam program?
[16:42:23] <pfred1> not what I'm looking to do now just need a program to calibrate my machine with
[16:42:31] <sirHOAX> http://tinyurl.com/7m3e5hg
[16:43:08] <pfred1> basically I want to write a program that will move one axis a specific distance then measure it to see if it moved the correct distance
[16:43:53] <slime> use the MDI
[16:44:24] <slime> to make a single move it makes no sense to write a program
[16:44:26] <pfred1> I'm not loking for alternatives
[16:44:37] <alex_joni> slime: nice, but a bit pricey
[16:44:54] <pfred1> I am looking for a tutorial that shows me how to write a basic G Code program
[16:45:31] <slime> alex_joni: i cant do it much cheaper
[16:45:40] <pfred1> slime yes you can
[16:46:02] <slime> i´m not obama :D
[16:46:30] <pfred1> slime 49.99
[16:46:35] <slime> rofl
[16:47:01] <andypugh> Definitely a Vespa, no space in front of the rear wheel for an engine :-)
[16:47:30] <andypugh> pfred1: That's G0
[16:47:45] <andypugh> Or G1 to do it slowly
[16:48:04] <pfred1> andypugh I thought you wanted me to play a game of chinese checkers for a second there
[16:48:09] <slime> andypugh: he will write a programm
[16:48:15] <slime> u forget the header ;)
[16:48:30] * pfred1 knows 0 about G Code
[16:48:36] <andypugh> You don't need a header for G0
[16:48:46] <slime> i know
[16:49:09] <slime> but if u run a programm u should use a header
[16:49:43] <pfred1> OK so lets say I wanted to move my Z axis 1 inch I just specify the axis then G0 1.0 ?
[16:50:02] <slime> G0Z1
[16:50:14] <slime> pfred1: up or down?
[16:50:21] <pfred1> slime that is what Godzilla has on his license plate
[16:50:49] <slime> hrhr
[16:51:03] <pfred1> well right not technically it is side to side because i have it layin down but yeah lets pretend it is up and down
[16:51:56] <pfred1> well I'll fire it up and try it out thanks
[16:51:58] <slime> G0Z1 is up in most cases
[16:52:03] <pfred1> GOZ1
[16:52:03] <slime> G0Z-1 is down
[16:52:09] <pfred1> ah OK
[16:52:27] <pfred1> I'll try both
[16:52:35] <pfred1> bbiab
[17:11:46] <pfred1> now I have to figure out why when I command my axis to move 1 it moves .233
[17:12:16] <pfred1> people say it is because of my scale value in my ini but as far as I can tell that is correct for my machine
[17:12:44] <pfred1> unless these lead screws I am using are not 10 TPI
[17:13:50] <andypugh> pfred1: It could be that. Or perhaps they are two-start threads?
[17:14:55] <pfred1> I am counting 11 lands in 1 inch
[17:15:21] <pfred1> but even it they were 11 TPI that still wouldn't make it off by this much
[17:19:54] <pfred1> beats me i just looked at the ini file looks right to me
[17:21:22] <pfred1> 400 steps per rev with a 10 TPI lead screw is a scale of 4000 right?
[17:21:49] <andypugh> Yes
[17:22:01] <pfred1> maybe my units is wrong?
[17:22:19] <pfred1> like what is .233 in metric?
[17:22:27] <JT-Shop> .233
[17:22:35] <pfred1> no .233 of an inch
[17:22:44] <andypugh> Are you editing the INI file directly?
[17:22:50] <pfred1> I am now
[17:23:52] <andypugh> 1mm is 0.0393"
[17:24:12] <andypugh> So I think you would notice if it was in metric
[17:24:54] <andypugh> You are moving approx 6mm.
[17:25:08] <andypugh> It may be that the accell/velocity are too high.
[17:25:40] <andypugh> Divide both numbers by 20 in the iNI and see what happens.
[17:25:50] <JT-Shop> .233" = 5.9182mm
[17:30:28] <archivist> any belt/gears between stepper and leadscrew
[17:30:56] <pfred1> archivist no just a piece of rubber hose
[17:31:17] <andypugh> Is it slipping?
[17:31:21] <pfred1> andypugh I have that set low
[17:31:25] <archivist> does the hose slip (common problem)
[17:31:30] <pfred1> well if it is it is one precision slip
[17:31:48] <pfred1> ah no it is accurate to 0.001 of an inch
[17:31:55] <slime> maybe the wron gcode active?
[17:31:58] <slime> G20/G21
[17:32:16] <pfred1> well on the display i can see the numbers
[17:32:33] <andypugh> I guess you would notice 0.767" of backlash.
[17:33:01] <pfred1> here is a question how come when I home my Z axis it goes to 0.085 and not just 0 ?
[17:33:18] <pfred1> all my other axises homed are just 0
[17:33:21] <pfred1> but X is this 0.085
[17:33:21] <andypugh> You have hoe switches?
[17:33:24] <pfred1> Z I mean
[17:33:27] <pfred1> no
[17:33:33] <pfred1> no home switches
[17:33:43] <slime> make a touch off
[17:33:52] <pfred1> ah OK
[17:33:54] <andypugh> Are you showing machine or relative coordinates (#)
[17:33:57] <pfred1> touch off will zero it?
[17:34:09] <pfred1> andypugh that is a good question
[17:34:17] <pfred1> let go try to figure out the answer
[17:35:02] <pfred1> relative actual and world are ah on?
[17:35:12] <pfred1> depressed what would I call it?
[17:35:30] <pfred1> what is the proper term?
[17:39:49] <andypugh> "#" ?
[17:40:00] <andypugh> A. "selected"
[17:40:28] <pfred1> I can't find touch off in tkemc
[17:40:33] <andypugh> You have "world" as an option?
[17:40:43] <pfred1> andypugh I appear to
[17:40:56] <pfred1> don't ask me what it is or means
[17:41:03] <pfred1> its all new to me here
[17:41:13] <pfred1> is that bad?
[17:41:27] <pfred1> how do I fix it?
[17:41:28] <andypugh> It's a surprise. Is this a gantry?
[17:41:37] <pfred1> it is supposed to be
[17:41:46] <andypugh> Ah, OK then.
[17:41:58] <pfred1> right now all I have is the Z axis laying sideways on my workbench
[17:42:18] <jdhNC> don't we all
[17:42:18] <pfred1> but just you and me know that I don't think the computer is wise to the fact
[17:42:59] <pfred1> I'd like to get this axis working how I think it should before I proceed
[17:43:06] <andypugh> If you are using a gantry config you probably have gantrykins in use, so you get World and Joint modes.
[17:43:17] <andypugh> Do you see numbers or letters for joint positions?
[17:43:20] <pfred1> well roll me a fatty
[17:43:41] <pfred1> just X Y and Z
[17:44:17] <pfred1> I don't know let me go look at it again for different numbers
[17:44:52] <pfred1> I found my -0.085 it is in work offsets
[17:45:19] <pfred1> I'll have to look into how to zero that out
[17:45:33] <andypugh> G92.1 I think
[17:47:34] <andypugh> in Python is "1" == 1 ?
[18:05:32] <Somethingelse> man freenode is hosed tonight
[18:07:08] <pfred1> if my machine was missing steps because it is set too fast would I be getting exactly the same movements all the time?
[18:07:42] <pfred1> slime wb
[18:08:15] <andypugh> pfred1: Oddly enough, maybe
[18:08:47] <andypugh> It will reach the same speed in very much the same place each time.
[18:09:09] <andypugh> You can possibly test that by helping it by hand to see if it goes further.
[18:09:39] <pfred1> andypugh I honestly do not think that is the problem because i had it set too fast saw what it did then and backed off considerably from that setting oh yeah and you're not stopping it with your hand either
[18:10:05] <pfred1> or helping it for that matter
[18:10:20] <andypugh> Adjust the scale until you get the right answer, then see what that answer is...
[18:10:52] <pfred1> you mean adjust the scale until 1 moves it one inch?
[18:11:02] <andypugh> My guess would be 17167.381974248927039
[18:11:22] <pfred1> so I just guess?
[18:11:59] <andypugh> Pretty much, as an experiment. Try 16000
[18:12:07] <pfred1> OK
[18:20:22] <andypugh> This is confusing me. "emc" launches 2.4.7, linucnc launces 2.5.0-pre
[18:36:38] <pfred1> 32800 is the magic scale number
[18:37:47] <pfred1> do I have like a setting set incorrectly or something? like maybe my steps per revolution or something?
[18:37:50] <JT-Shop> what is linucnc?
[18:38:03] <pfred1> I could swear I'm in half stepping mode with a 200 steps per rev motor
[18:38:21] <JT-Shop> the scale number is the only one that matters
[18:39:06] <pfred1> well I could fiddle with it some more but I got it really close to 1 inch with 32800
[18:39:18] <pfred1> like .998 or something
[18:41:14] <pfred1> I mean it is a wood router
[18:42:29] <pfred1> andypugh is 2.4.7 worth upgrading to?
[18:42:39] * pfred1 has 2.4.5
[18:43:19] <andypugh> It's an easy upgrade, I see no reason not to.
[18:43:39] <pfred1> andypugh well, I do have to build the rest of my machine
[18:43:53] <pfred1> I only have the Z axis done
[18:44:57] <pfred1> well, it isn't 100% done even I'm holding the motor bracket on with clamps
[18:45:46] <pfred1> I wanted to make sure it was in a godo spot before i drilled holes and fixed it permanently
[18:45:53] <andypugh> It sounds like you might be on 16x microstepping. And if you have a 2.5mm pitch screw rather than 10tpi then your magic number ought to be 32512.
[18:46:42] <pfred1> hmmm 16X microstepping? that means if I get into a lower mode maybe I can go much faster?
[18:46:47] <andypugh> (32512/32800)=.9912, so that's in the region too.
[18:46:54] <andypugh> Yes.
[18:47:00] <pfred1> I could swear I have the dip switches right but I'll have to flip them
[18:47:19] <pfred1> maybe my logic is reversed to how i think they are?
[18:47:20] <andypugh> Perhaps you have on and off confused, or are reading from the wrong end..
[18:47:31] <pfred1> yup something like that might be going on
[18:47:48] <pfred1> I have 2 switches that set the mode
[18:47:52] <pfred1> they're binary
[18:47:57] <andypugh> Is it a ballscrew?
[18:48:02] <pfred1> ha ha
[18:48:04] <pfred1> no acme
[18:48:22] <andypugh> OK, even then 2.5mm rather than 10tpi is pretty likely.
[18:48:26] <pfred1> next machine i build I'll go with the balls
[18:49:24] <pfred1> yeah when I counted the threads I counted 11 lands in an inch
[18:49:34] <pfred1> maybe I'm just not counting them right?
[18:49:59] <pfred1> I could have sworn I could count to ten but with this CNC stuff I'm questioning everything anymore
[18:50:39] <andypugh> You won't be able to tell 2.5mm from 10tpi with a ruler.
[18:50:59] <pfred1> I have to say the motor is running really smoothly for half stepping mode it could be 16 microstepping on me
[18:52:03] <andypugh> Night all
[18:52:06] <pfred1> nite
[18:52:09] <pfred1> thanks
[19:08:07] <pfred1> Now I have to fiddle with the step mode switches on my driver or I'll never get to sleep tonight
[19:13:30] * Jymmm hands pfred1 a glass of warm milk.
[19:13:43] <Jymmm> and by warm milk, I mean tequila!
[19:16:29] <pfred1> wholly driver IS smoke Batman!
[19:16:35] <pfred1> driver IC even
[19:17:42] <pfred1> I didn't know what I was going to do with the extras I bought anyways
[19:18:01] <PCW> Wrong switch?
[19:18:23] <pfred1> PCW I could swear I've changed modes when it was powered up before
[19:18:43] <pfred1> we won't be doing that again any time too soon though!
[19:18:56] <PCW> Well now you have more reason to swear...
[19:19:18] <Jymmm> pfred1: FWIW, I smoke to Mariss on the phone a ways back and he said that the #1 way to kill a drive is to disconnect it from the motor.
[19:19:20] <pfred1> I bought extras still a pain to put a new one in
[19:19:25] <Jymmm> s/smoke/spoke/
[19:19:44] <pfred1> Jymmm I just tried changing the step mode switches on my drive
[19:19:51] <pfred1> thing blew up!
[19:20:28] <Jymmm> pfred1: Yeah, they no like to be "disconnected" when powered.
[19:21:32] <Jymmm> pfred1: Mariss said even his "Vampire" drives wouldn't survive that kind of thing.
[19:23:11] <pfred1> Jymmm no the step mode siwtches
[19:23:15] <pfred1> not the motor
[19:23:56] <Jymmm> I found a 220 to 110 @ 700 Va (iirc) torroid the other day for $25. Even if I used 120VAC on the primary, I'd still get 60+ on the scondary wouldn't I? Not to mention the rectification to DC jumping it even higher I believe.
[19:24:17] <Jymmm> pfred1: Right, but that does change the interaction of the coils in the motors doens't it?
[19:24:35] <Jymmm> BEMF and all that.
[19:25:01] <Jymmm> I need around 50V
[19:26:01] <Jymmm> But, if I got brave... would reducing the number of turn on the secondary drop the voltage a bit?
[19:26:27] <Jymmm> I think VA rating is based on the wire gauge, not the number of turns.
[19:31:11] <pfred1> VA stands for Volt Amps doesn't it?
[19:32:27] <pfred1> OK bad IC out now to clean the board and drop a new one in
[19:51:50] <Jymmm> pfred1: Correct. It's the Wattage before/after the PF has been taken into consideration iirc.
[19:52:35] <Jymmm> http://en.wikipedia.org/wiki/Volt-ampere
[19:52:58] <Jymmm> http://en.wikipedia.org/wiki/Power_factor
[20:01:26] <Jymmm> JT-Shop: ping
[20:38:09] <pfred1> Jymmm if you change the volts you affect the VA and watts
[20:38:24] <pfred1> but I wouldn't lose sleep over the effect
[20:39:20] <pfred1> Jymmm does your transformer put out a little too much voltage?
[20:40:58] <Jymmm> pfred1: It's a torroid I found in a surplus store for $25 I was thinking about buying.
[20:41:23] <pfred1> Jymmm well after you rectify it and filter it it is going to put out even more
[20:41:43] <pfred1> about a third more than its AC rating
[20:42:00] <pfred1> the RMS bump
[20:42:04] <Jymmm> pfred1: Yeah, that's why I was wondering if I took out a few winds, would it reduce the VA too much?
[20:42:53] <pfred1> nah but lets say it is a 40 volt AC transformer after you filter it and rectify it you're going to have raw 52 DC
[20:43:44] <pfred1> plus unless it is a precision transformer what they say they are and what they put out are usually two different things they tend to the high side in my experience
[20:44:06] <pfred1> like 24 VAC transformers are usually around 28 VAC
[20:44:07] <Jymmm> Yeah, so me wanting 50VDC, I need like 36VAC on the secondary.
[20:44:19] <pfred1> yeah it is tricky to nail it
[20:45:01] <pfred1> I built an adjustable linear supply but it is only good to about 42 VDC
[20:45:22] <pfred1> somewhere in the 300 watt range
[20:45:44] <pfred1> I've only load tested it to 100 watts but it didn't even get warm doing that
[20:46:16] <Jymmm> Yeah, I even thought about having a 1000VA transfeorm made for me that you can adjust from 1 to 128 volts =)
[20:46:30] <pfred1> I think there may be a technique where you can float the ground on the regulator IC and get more volts out of it
[20:46:47] <pfred1> variac
[20:47:03] <pfred1> I have one but it only a 3 amp one they make huge variacs though
[20:47:16] <pfred1> 10 amp pretty common
[20:47:34] <Jymmm> I guess I could, I'd rather have a "solid" output voltage not what some wiper says
[20:47:50] <pfred1> then you need a regulator
[20:48:00] <Jymmm> nah
[20:48:25] <pfred1> this is the one I built
http://www.instructables.com/id/300-Watt-Linear-Power-Supply/
[20:48:28] <Jymmm> It's just that variac wipers get dirty and such
[20:48:59] <pfred1> it is super accurate
[20:49:11] <pfred1> like hundreth of a volt no sweat
[20:49:31] <Jymmm> cool, good for electronics testing
[20:49:52] <pfred1> yeah I need to make another one because the one i have is going on my CNC machine
[20:50:29] <pfred1> thing just had the juice to totally blow this one motor driver to smitherenes
[20:50:45] <pfred1> thing was just about to burst into flame before i shut it down
[20:51:05] <Jymmm> pfred1: I have one of these, just going to make a box that sits under it with a 0-n adj regulator in it
http://www.universal-radio.com/catalog/hamps/4082.html
[20:51:33] <pfred1> I worry about switchers being as steppers are so dirty to begin with
[20:51:51] <pfred1> I've had a lot of noise issues with my system I had to overcome
[20:52:06] <pfred1> long as it is clean though its good
[20:52:32] <Jymmm> Well, that PS is for my radio, electronics testing. Not for CNC stuff.
[20:52:44] <pfred1> yes it doesn't go high enough voltage
[20:53:14] <Jymmm> There's also a "remote control" for it that will adjust the voltage externally
[20:53:26] <Jymmm> thru a jack in the back
[20:53:26] <pfred1> a sense?
[20:53:47] <Jymmm> resistor controlled basically
[20:54:07] <pfred1> hmmm the way regulators work is they compare the voltage to a reference
[20:54:20] <pfred1> usually a zener diode
[20:54:29] <pfred1> but where you compare matters
[20:55:10] <pfred1> sort of like the star ground method but different
[20:55:38] <Jymmm> pfred1:
http://www.alinco.com/pdf.files/
[20:55:49] * Tecan waits for parts for laser engraver
[20:55:59] <Jymmm> select first PS in drop down
[20:56:05] <pfred1> Tecan CO2?
[20:56:09] <Tecan> ya
[20:56:19] <Tecan> bought a kit on ebay and the laser+ ps seperate
[20:56:21] <pfred1> what's your tube cost per hour to run?
[20:56:31] <pfred1> that is what scares me about those
[20:56:43] <pfred1> them tubes they don't last forever and they cost a fortune
[20:57:02] <pfred1> so you can pretty much break it down to what it costs a minute to run the things
[20:57:12] <Jymmm> pfred1:
http://i43.tinypic.com/1z38b5c.jpg
[20:57:13] <Tecan> not sure yet but the commercial ones seem to be worthy of price
[20:57:40] <Tecan> bbl girlfriends here to watch movies
[20:57:41] <Jymmm> Tecan: ebay link (if you dont mind)?
[20:57:46] <Tecan> sec
[20:58:01] <Tecan> http://www.ebay.ca/itm/160393738120?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
[20:58:19] <pfred1> Jymmm OK this is just a remote pot
[20:58:26] <Jymmm> pfred1: yeah =)
[20:58:34] <Jymmm> pfred1: but nice feature to have
[20:59:31] <pfred1> ah this is the linear guides not the actual laser itself
[20:59:59] <pfred1> I looked into lasers very expensive
[21:00:06] <Jymmm> pfred1: I can setup the external box I was talking about to set the PS to 5V, instead of the regulators trying to dissapate 15V as example.
[21:00:33] <pfred1> well it is a switching supply
[21:00:39] <pfred1> they just PWM down
[21:01:11] <pfred1> linears are the ones that get killed with big input output differtials
[21:02:07] <pfred1> Jymmm know one great place to get heavy duty transformers?
[21:02:30] <pfred1> find yourself a big old heavy boat anchor microwave oven on the side of the road and rewind it
[21:02:42] <pfred1> they're goot to like 2000 watts
[21:03:32] <pfred1> the transformers are always good in them it is the magnetrons that die
[22:50:40] <A2Sheds> http://www.youtube.com/watch?v=mxxdq6y8z8M just found this EMC2 5 axis cinci at MPM
[22:51:00] <A2Sheds> looks like the largest retro fit so far
[23:49:33] <alex4nder-> crazy
