#emc | Logs for 2005-08-24

[00:00:00] <Jacky^> but its hard for me to think that peoples buy 40k euro machine for hobby ..
[00:00:12] <anonimasu> Oh, that's the local machineshop that has one..
[00:00:15] <Jacky^> if have not return
[00:00:24] <anonimasu> but I dont think they have any return on it..
[00:00:26] <anonimasu> not too much
[00:00:38] <anonimasu> but well 20 000eur wouldnt be too much..
[00:01:24] <Jacky^> to be onest, i've seen some commercial machine
[00:01:41] <Jacky^> about 30k euro, it seem to me a toy :\
[00:03:34] <Jacky^> look here: http://www.makxilia.it/centro_lavoro_cncsmart.html
[00:03:56] <Jacky^> you would buy it ?
[00:03:59] <anonimasu> hm..
[00:04:13] <anonimasu> I wouldnt ever buy a router.
[00:04:26] <anonimasu> I am not interested in wood..
[00:05:13] <Jacky^> but there are machine that can work wood and metal , right ?
[00:06:04] <Jacky^> maybe light metal
[00:07:22] <anonimasu> yeah
[00:15:18] <Jacky^> ouch
[00:15:26] <Jacky^> another plane crashed
[00:15:31] <AchiestDragon> shame i dont have a big enough workshop http://cgi.ebay.co.uk/Boko-F2-Milling-Machine-with-Beaver-head_W0QQitemZ7539870141QQcategoryZ12584QQrdZ1QQcmdZViewItem at the price would make a good cnc conversion project
[00:15:47] <anonimasu> Jacky^: where?
[00:15:51] <Jacky^> peru
[00:16:21] <anonimasu> got a link?
[00:16:35] <Jacky^> i'm whaching live TV
[00:16:39] <Jacky^> no idea..
[00:16:44] <anonimasu> ah found it
[00:16:53] <Jacky^> about 1 hour ago
[00:19:38] <Jacky^> AchiestDragon: nice
[00:26:07] <anonimasu> night
[00:26:57] <Jymmm> anonimasu router can do more than just wood =)
[00:27:44] <Jacky^> Jymmm: I hope..
[00:27:57] <Jymmm> lol
[00:28:03] <Jacky^> :)
[00:48:31] <Jacky^> anonimasu: ..
[00:48:59] <Jacky^> in chipload calculation, stepover should be considered ?
[00:50:04] <Jacky^> i'm already a little confused on it..
[01:32:09] <Jacky^> G night
[02:31:22] <Jymmm> hey John
[02:46:48] <Jymmm> I was actually able to test my machine!!! Not that the artwork was right, or that I have everything setup properly, or that the machien is still fubar'ed but I actually made some sawdust! WooHoo!!!
[02:55:55] <A-L-P-H-A> Jymmm, and how much have you paid for this?
[02:57:49] <Jymmm> everything? incl tax, shipping, accessoeries, tooling, material, etc?
[03:00:41] <A-L-P-H-A> sure
[03:01:41] <Jymmm> $3575
[03:01:47] <A-L-P-H-A> wow.
[03:02:15] <Jymmm> Well. it's not JUST the machien from them
[03:02:19] <A-L-P-H-A> hope you have fun, and make money off it.
[03:02:31] <Jymmm> That's the plan =)
[03:03:34] <Jymmm> router + 2yr instant replacement warranty, shopvac, gorilla rack, igus energy chain, dial indicator, etc, etc etc
[03:03:56] <Jymmm> it's all the lil shit that adds up real quick
[03:03:58] <A-L-P-H-A> how much was the igus energy cable chain?
[03:04:16] <Jymmm> $12 for about 6' =)
[03:04:25] <A-L-P-H-A> from igus directly?
[03:04:32] <A-L-P-H-A> got photos?
[03:04:38] <Jymmm> hell no =) electronics swap meet =)
[03:04:41] <A-L-P-H-A> oh.
[03:05:21] <Jymmm> Got a P3 733 for $15, and a thinkpad for $50 too
[03:05:37] <Jymmm> got real lucky.... usually not the case
[03:05:51] <Jymmm> maybe casue I was there at 4:30am
[03:05:59] <A-L-P-H-A> wtf? that early?
[03:06:11] <Jymmm> Yeah, opens at 5am closes at noon
[03:06:22] <Jymmm> once a month
[03:06:31] <A-L-P-H-A> and people are there at 5am???
[03:06:35] <A-L-P-H-A> to sell, and to buy shit?
[03:06:36] <Jymmm> no, at 4am
[03:06:50] <Jymmm> ppl from AZ show up to sell
[03:06:58] <A-L-P-H-A> this is in SF?
[03:07:02] <Jymmm> San Jose
[03:07:31] <A-L-P-H-A> hmm... I'm trying to remember if myth busters went to that place... like the yawning test thing
[03:07:39] <A-L-P-H-A> is there another San Jose in FL?
[03:07:51] <Jymmm> Myth Busters is in SF
[03:07:59] <Jymmm> M5 Industries
[03:08:04] <A-L-P-H-A> yeah, I know.
[03:19:01] <Jymmm> http://www.electronicsfleamarket.com/
[04:11:59] <CIA-9> 03jmkasunich * 10emc_HAL/farm_scripts/ (12 files): moved compile farm scripts into CVS, in the unused emc_HAL module
[04:58:05] <A-L-P-H-A> Jymmm, http://www.thesneeze.com/mt-archives/000408.php myth busters interview
[06:16:27] <Jymmm> kinda cool
[07:50:47] <xet7> Morning all :)
[07:51:48] <xet7> Could k3b be included in BDI 4.23?
[07:53:21] <xet7> And on BDI 4.20 Install's Grub section even if I select DOS/Windows as default to boot, Linux is still default after installing has finished
[09:40:13] <Jacky^> Gmorning
[09:40:40] <ValarQ> morning mr Jack
[09:40:50] <Jacky^> hello ValarQ
[09:50:43] <xet7> Morning Jack
[09:52:55] <Jacky^> hi xet7
[10:31:42] <[1]xet7> [1]xet7 is now known as xet7
[11:22:02] <anonimasu> Jacky^: les router can do metal, with that said, not all routers will do metal..
[11:22:52] <anonimasu> most can do light metalwork..
[11:26:28] <Jacky^> morning anonimasu :)
[11:26:33] <Jacky^> nice..
[11:27:16] <Jacky^> i'm playng whit PID on my machine
[11:27:32] <Jacky^> attempting to get high speed.. :(
[12:01:35] <Yuga> hey all
[12:01:51] <Yuga> finaly got the price of rack and pinion... i am almost ready to go now :)
[14:16:32] <anonimasu> Yuga: how does it look?
[14:51:17] <AchiestDragon_> AchiestDragon_ is now known as AchiestDragon
[15:16:42] <xet7> xet7 is now known as xet7_2
[15:40:55] <lilo> [Global Notice] Hi all. We're testing updates to hyperion, including a fix for mIRC /list, less +J overflow during netjoins, documentation updates and a fix for some of our users who have trouble maintaining a TCP connect for long periods of time. Please help us by using the testnet, server irc.freenode.net, port 9001 .... report any problems to #hyperion here! Thank you, and have a great afternoon.
[15:54:42] <xet7_2> xet7_2 is now known as xet7
[18:01:06] <Jacky^> 37 inches/min ..
[18:01:27] <Jacky^> max speed i can get, it seem already low for wood :(��
[18:02:47] <[1]xet7> [1]xet7 is now known as xet7
[18:04:28] <Jacky^> hello Jymmm
[18:04:30] <Jymmm> Howdy Y'all!
[18:09:08] <Jacky^> Jymmm: 37 inch/min
[18:09:18] <Jacky^> how fast is your machine ?
[18:09:28] <Jymmm> ~100IPM so far.
[18:09:40] <Jacky^> :(
[18:09:50] <Jymmm> using the xylotex board... 24VDC
[18:10:06] <Jacky^> and steppers..
[18:10:10] <Jymmm> yeah
[18:10:51] <Jacky^> well i played on tuning PID this morning
[18:11:18] <Jacky^> max speed i reached 37 iches/min
[18:11:40] <Jacky^> and sometime.. motor stalled
[18:11:54] <Jacky^> it's time to change all here
[18:12:35] <Jacky^> i found that tuning P variable take positive effect
[18:13:27] <Jacky^> any value used for I-D other than zero won't work
[18:13:48] <Jacky^> also FF1 seem have no positive effect
[18:13:57] <Jacky^> i tried all :\
[18:28:20] <Jymmm> Have you tried just moving the machine by hand and checking for play, binding, etc?
[18:28:41] <Jymmm> Got Grease?
[18:29:21] <Jacky^> Jymmm: yeah
[18:29:51] <Jacky^> i cheched all 1000 tomes :\
[18:29:55] <Jymmm> Most of the issues I have/had are more due to the machien itself, not the electronics/software.
[18:30:18] <Jacky^> i'm too ..
[18:30:50] <Jacky^> the motor are the hard limit
[18:30:59] <Jymmm> what size?
[18:31:19] <Jacky^> 200 step 2 A, unipolar
[18:31:25] <Jacky^> 54x54 mm
[18:31:31] <Jymmm> the oz in
[18:31:36] <Jacky^> no idea
[18:31:59] <Jymmm> mfg/model # ?
[18:32:02] <Jacky^> it s not documented
[18:32:14] <Jymmm> picture?
[18:32:28] <Jacky^> surplus motors made by MAE (italian..)
[18:32:40] <Jymmm> any numbers on it?
[18:33:13] <Jacky^> its model 22 on this page: http://www.micromed.it/Elettronica/stepper.htm
[18:33:37] <Jacky^> DX side there's a picture link
[18:33:57] <Jacky^> bah.. ad motors
[18:34:00] <Jacky^> bad*
[18:34:09] <Jymmm> DX ?
[18:34:19] <Jacky^> right
[18:34:24] <Jacky^> on the right
[18:35:07] <Jacky^> we call SX (left) DX (right)..
[18:35:20] <Jymmm> give me the model number off the motor
[18:35:24] <Jacky^> i forgot i was speak english :)
[18:36:08] <Jacky^> i give you all numers i see on label:
[18:36:18] <Jymmm> no, just the model number
[18:36:29] <Jymmm> begins with a single or dbl letter
[18:36:49] <Jacky^> HY200 2220 0210 AU06 A3278I
[18:37:02] <Jacky^> that all, where,
[18:37:20] <Jacky^> i think the model should be HY200 ..
[18:38:17] <Jacky^> Jymmm: but i thibk it's had to know more about it ..
[18:38:25] <Jacky^> probably an old motor
[18:38:34] <Jacky^> hard
[18:40:22] <Jacky^> robin_sz gave has suggest to me to try half winding on motor
[18:40:33] <Jacky^> infact, it work better
[18:41:04] <Jacky^> driving it in half stp mode, its also ok
[18:41:27] <Jacky^> i think it cant really go better
[18:41:35] <Jacky^> i just need to change it
[18:41:45] <Jacky^> :(
[18:45:24] <Jymmm> Jacky^: The NEW part number for your motor is: Y 20 2220 0210
[18:45:45] <Jacky^> how you can get it ? O_O
[18:45:46] <Jymmm> Jacky^ : Specs are here, page 6 : http://www.pennmotion.com/pdf/stp_bulletin.pdf
[18:46:11] <Jacky^> Jymmm: great
[18:46:19] <Jacky^> thanks a lot
[18:46:31] <Jacky^> you're incredible :P
[18:46:36] <Jymmm> It's called GOOGLE
[18:47:33] <Jacky^> :)
[18:51:45] <Jymmm> wiring is on page 19
[18:51:52] <Jymmm> read the whole PDF
[18:52:04] <Jacky^> looking ..
[18:52:04] <Jymmm> and pg 18
[18:54:18] <Jymmm> 91 OZ-in
[18:54:26] <Jymmm> bipolar
[18:54:42] <Jymmm> max voltage 75
[18:56:08] <Jacky^> but, the mine is unipolar
[18:56:40] <Jacky^> they mean when used as bipolar ?
[18:56:52] <Jymmm> no, yours can be both
[18:57:02] <Jymmm> depending on how it's wired
[18:57:08] <Jacky^> yeah
[18:59:03] <Jymmm> anyhow... you now have the specs for your motors, so you should be able to get a little better now.
[18:59:15] <Jacky^> 91 OZ-in how it seem to you ?
[18:59:26] <Jacky^> Jymmm: right, thanks :)
[19:00:02] <Jymmm> I'm not the one to ask, but seems a bit undersized for your application. Mine are 269oz-in, but I'm not using geckos either.
[19:00:30] <Jymmm> I could probably get more out of mine if I used higher voltage.
[19:00:52] <Jymmm> and geckos
[19:01:23] <Jacky^> yeah
[19:02:03] <Jacky^> i'm using 22 V unregulated PS
[19:02:16] <Jymmm> your motors can handle up to 75V
[19:02:31] <Jymmm> might try 48-50V if you can
[19:02:35] <Jacky^> but not the controller I suppose..
[19:02:52] <Jymmm> well, if the driver can handle that much I mean
[19:02:52] <Jacky^> max voltage for controller seem to be 30 V
[19:03:15] <Jacky^> a couple of L297-l298
[19:03:53] <Jacky^> i could get 8V more ..
[19:04:58] <Jacky^> another controller i'm using can work at 40 V
[19:05:14] <Jymmm> I'd try that if you have the PS for it.
[19:05:51] <Jacky^> i will search ..
[19:06:24] <Jacky^> i've a bit toroidal transformer but have too high voltage: 55 V
[19:06:43] <Jacky^> others are small.. 15 V
[19:07:11] <Jymmm> is your torroid 110/220 ?
[19:07:18] <Jacky^> 220 V
[19:07:30] <Jymmm> ah
[19:07:48] <Jacky^> here we have that voltage
[19:07:55] <Jymmm> see, I can cheat and connect 110 to the 220 side and get 50% on the output =)
[19:08:07] <Jacky^> cool :)
[19:08:26] <Jacky^> instead, I could just burn it ..
[19:08:34] <Jymmm> 55V in half = 27.5V * 1.414 = 38.9VDC
[19:08:40] <Jacky^> nice
[19:09:19] <Jacky^> I used 1N5006 diodes on PS
[19:09:42] <Jacky^> i was thinking if different diodes are used what happen..
[19:12:32] <Jacky^> 2 transformer can't be wired in series right ?
[19:16:19] <Jymmm> transformers can... to add the voltage, but each one has to have the proper current rating.
[19:16:24] <Jymmm> Example...
[19:16:45] <Jymmm> if I have two 12V @ 1A transformers
[19:17:11] <Jymmm> and I want 24V @ 1A, I can wire the secondaries in series.
[19:17:27] <Jymmm> But, if I want 24V @ 2A, then it wont work.
[19:17:36] <jepler_> You can get 12V @ 2A though, can't you?
[19:17:47] <Jymmm> If I want 12 @ 2A, then I can wire the secondaries in parallel.
[19:17:53] <jepler_> jepler_ is now known as jepler
[19:17:58] <jepler> * jepler wonders why he keeps getting an underscore
[19:19:31] <Jymmm> Jacky^ : Understand?
[19:20:24] <Jacky^> Jymmm: yeah
[19:20:32] <Jymmm> ok, cool =)
[19:20:42] <Jacky^> i 'm looking for the voltage output on my transformer
[19:20:49] <Jacky^> can't remember ..
[19:21:15] <Jacky^> it should have something like 15-0-15
[19:21:21] <Jymmm> heh, uses fuses BEFORE you connect power to it =)
[19:21:28] <Jacky^> :)
[19:21:57] <Jacky^> yeah, it have rapid fuse
[19:24:25] <Jacky^> ok, confirmed
[19:24:31] <Jacky^> 16-0-16
[19:24:42] <Jacky^> can't i get 30 V so ?
[19:25:06] <Jymmm> 16-0-16 is 32V
[19:25:14] <Jacky^> that's ok
[19:25:21] <Jacky^> capacitors are 50 V
[19:25:30] <Jymmm> 32*1.414 =45.3VDC
[19:26:04] <Jacky^> oh .. to high :(
[19:26:13] <Jacky^> after the diodes ?
[19:26:19] <Jymmm> VDC
[19:27:38] <Jacky^> * Jacky^ umpf ..
[20:14:27] <Jymmm> les!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[20:14:40] <AchiestDragon> the voltage rating of the caps wants to be bigger than the voltage of the circut ,with steppers and other inductive loads you need to take into account that there may be voltage spikes above the calculated voltage also
[20:14:40] <les> back
[20:15:03] <les> storm blew out some stuff including dsl router
[20:15:20] <Jymmm> les oh, bummer! I was wonering why I haven't seen you.
[20:15:42] <Jymmm> les telco line not grounded?
[20:16:21] <les> had to hook up the replacement on usb....the computer ethernet is not working either
[20:16:42] <les> not sure about tel line
[20:17:07] <Jymmm> les : Some surge supressor outlet strips have jacks for telco lines as well.
[20:17:11] <les> I just know big sparks came out of all the outlets
[20:17:12] <Jacky^> hi les :)
[20:17:17] <Jymmm> and cable/coax too (F connectors)
[20:17:22] <ValarQ> hi Jack :)
[20:17:23] <les> yeah have surge on tel and power
[20:17:42] <Jymmm> les Well, you're back at least =)
[20:17:51] <les> so I guess it popped the ethernet adapter on the mb
[20:17:56] <Jacky^> 'lo ValarQ
[20:17:56] <les> usb seems to work
[20:19:25] <ValarQ> * ValarQ tries to understand hal
[20:21:32] <Jacky^> les: question about wood and chipload ..
[20:22:02] <Jacky^> stepover can influence chipload calculation ?
[20:23:02] <Jacky^> i'm using 3 mm ballnose 0.3 stepover ..
[20:24:35] <Jacky^> i'm doing 37 IPM / 11.000 x 2 (flutes)
[20:25:10] <Jacky^> 0.0016
[20:28:17] <xet7> Does tool length compensation and radius compensation in emc work like changing user interface values for them (offsets) and running same G-Code again, without manually modifying G-Code?
[20:45:38] <jepler> If I understand what you mean, then yes. By changing emc's idea of tool lengths and diameters (or radii, whichever is in the tool file) the machine will pass through a different set of points when given the same file as input
[20:52:02] <xet7> ok thanks
[21:34:03] <Jacky^> anyone know how to calculate correct current for a stepper ?
[21:34:30] <Jymmm> Jacky^ : that url I gave you yerterday THAT YOU DID NOT READ!
[21:34:42] <Jymmm> the pdff from geckodrives.com
[21:34:46] <Jacky^> Jymmm: i've an half idea..
[21:35:19] <Jacky^> amper� = volt : ohm
[21:35:45] <Jacky^> but, i'm a little confused..
[21:35:51] <Jymmm> RTFM
[21:36:27] <Jacky^> max voltage for motor is 75 V, ampere phase 2.10, ohm 1.1
[21:36:48] <Jymmm> Go read the whitepaper Jacky^. it explains it all.
[21:37:03] <Jacky^> ok..
[21:37:30] <Jymmm> ohms law and calculating stepper current is not that straight forward.
[21:37:56] <Jymmm> the whitepaper explains it.
[21:38:03] <Jacky^> ok, thanks
[21:39:01] <les> getting any burning now?
[21:39:12] <Jacky^> hi les
[21:39:23] <les> hi jacky
[21:39:32] <les> storm blew out my modem
[21:39:46] <les> just got new one today
[21:39:52] <Jacky^> bad wheater ?
[21:40:00] <les> yes
[21:40:05] <Jacky^> :S
[21:40:15] <les> heh
[21:40:23] <Jacky^> crazy summer..
[21:40:31] <les> lost several things due to voltage surge
[21:40:51] <Jacky^> why do not use some diode on phone line ?
[21:41:02] <Jacky^> it could protect, i think ..
[21:41:39] <AchiestDragon> no a dioed would blow also ,, you need a proper spark gap or surge arrester
[21:41:46] <les> I had surge protectors on power and phone
[21:41:53] <les> some exploded!
[21:42:01] <Jacky^> ghghg ...
[21:42:07] <Jymmm> MOV's
[21:42:12] <les> yup
[21:42:49] <AchiestDragon> did you get the protector that offers a connected equipment garentee
[21:43:14] <les> no. but I think I had better!
[21:43:51] <les> I am out of business without dsl!
[21:43:57] <AchiestDragon> the one i got offers cover for surge damage to upto £30,000 of equipment
[21:43:58] <les> 6 days.
[21:44:27] <les> I think I will get something like that.
[21:44:49] <Jacky^> Jymmm: i'm thinking to buy a transformer 24 V
[21:45:17] <Jymmm> 24 * 1.414 = 33.936 VDC
[21:45:27] <Jacky^> yeah..
[21:45:39] <Jymmm> those motor can go up to 75V
[21:45:53] <Jacky^> i'm not sure abuot 2 controllers..
[21:46:00] <Jymmm> ah
[21:46:04] <Jacky^> i want to upload the schematic
[21:46:14] <Jacky^> i think it can work up to 30 V
[21:46:28] <Jymmm> contollers? I consider EMC to be a controller. You mean driver (like gecko) ?
[21:46:42] <Jacky^> yeah, driver
[21:46:54] <Jymmm> k
[21:47:59] <xet7> Has there been updates to tkEmc after BDI 4.20?
[21:55:15] <Jacky^> here's my driver: http://www.roboitalia.com/modules.php?name=coppermine&file=displayimage&pos=-1288
[21:55:37] <Jacky^> do you think i can use 34 V on it ?
[21:55:56] <Jacky^> click on image to enlarge ..
[21:56:35] <cradek> L298 can easily handle 34V
[21:56:51] <Jacky^> h cradek , will not burn ?
[21:57:05] <cradek> you will probably need a good heat sink
[21:57:27] <cradek> why not look at the L298 datasheet?
[21:57:42] <Jacky^> i can do it ..
[21:58:03] <Jacky^> but i'm not so expert :(
[21:58:23] <Jacky^> maybe all R values need to be changed..
[21:58:29] <Jacky^> if so, it's hard
[21:59:50] <cradek> 34V will be fine
[22:00:34] <Jacky^> cradek: I already have heat sink
[22:00:55] <Jacky^> I also added a small fan on any heat sink !
[22:01:00] <cradek> good
[22:01:16] <Jacky^> but the diodes ?
[22:01:22] <Jymmm> fans are for pussys
[22:01:23] <Jacky^> and other components ?
[22:01:51] <Jacky^> im only sure about electrolitic capacitor voltage
[22:01:57] <Jymmm> 1 sq in" chip, 42 sq in heatsink! =)
[22:02:00] <Jacky^> it is 50 V, can work ..
[22:02:23] <cradek> yes, as long as the electrolytics are rated high enough you will be fine
[22:03:03] <Jacky^> cradek: good :)
[22:03:56] <Jacky^> i want to take a look to the L298 datasheet
[22:04:30] <Jacky^> the mine is .. L298N
[22:05:03] <jepler> The sense resistors don't need to change just because the power supply voltage changes. Neither should the reference resistor on l297 since presumably that voltage is derived from the logic supply, not the motor supply.
[22:06:23] <Jacky^> jepler: cool :) tnx
[22:07:16] <Jacky^> ok, L298N seem can work with 46 V max
[22:07:50] <Jacky^> 34 V PS should be ok
[22:07:50] <jepler> Jacky^: "R2" sets the current? I see that it's a divider from the logic supply so it should be fine
[22:08:01] <Jacky^> jepler: yes
[22:08:20] <Jacky^> about current i'm reading..
[22:08:42] <Jacky^> I know, using half winding current should be half
[22:08:48] <Jacky^> if is right ..
[22:09:39] <les> Anyone know if the tool changer stuff on emc works? Looks like I am buying an ATC spindle.
[22:12:06] <jepler> Jacky^: I think the answer is not one half, but 1/sqrt(2). If the limit is about the power (heat) the motor can successfully dissipate, then that goes up with the square of the current... a 1 ohm winding with 1A current gives 1 watt, as do 2 1-ohm windings with .7A current each.
[22:13:39] <Jacky^> jepler: ok
[22:14:29] <Jacky^> my motors are 2.1 A/phase, I think to buy a transformer 24 V 6 A
[22:14:34] <Jacky^> it's ok ?
[22:14:42] <Jacky^> 3 motors ..
[22:15:26] <Jacky^> 6 A should be enough at that voltage
[22:15:58] <Jacky^> and using half winding on motors
[22:16:34] <Jacky^> probably, i could have current enogh for 2 axis more
[22:18:58] <jepler> I'm a little fuzzy on that. It seems like you want to compare power to power, not current to current.
[22:19:41] <jepler> you'll also need to figure out the required size of input capacitor to keep the ripple fairly low (gecko drives want <10%, which is probably not a bad standard to meet for l298-based drives)
[22:20:48] <Jacky^> i don't know much about .. I just read that more voltage = minor current
[22:21:30] <Jacky^> for PS i'm using 1000 uF /amper
[22:22:04] <Jacky^> :(
[22:22:05] <jepler> if you are supplying 2.1 A to 6 windings (2 windings each on 3 motors) that's up to 12.6 amps "instantaneous current", but over a longer period of time (1ms, maybe) the average current is substantially lower, depending on the ratio of on-time to off-time in the chopper.
[22:24:10] <Jacky^> i'm not suppling 2.1 A ..
[22:24:33] <Jacky^> beacuse motors are unipolar in half winding configuration
[22:25:02] <Jacky^> ideal current should be half, or how you sayd
[22:25:17] <Jacky^> but i'm non measuring it ..
[22:25:35] <robin_sz> meep?
[22:25:49] <Jacky^> i just regulate the current manually
[22:25:55] <Jacky^> hi robin_sz
[22:26:00] <robin_sz> Hi.
[22:26:11] <robin_sz> * robin_sz is beginning to hate Thunderbird
[22:26:37] <robin_sz> how fscking difficult should it be to change the password used for a mail account huh?
[22:29:00] <cradek> changing a password is not a function of a mailreader
[22:33:28] <jepler> cradek: not clear whether he meant "change the password thunderbird sends" or the thing you thought he meant.
[22:34:04] <cradek> oh, right
[22:34:07] <jepler> hm, the geckodrive white papers talk about the necessary power supply in terms of current, and they're probably smarter than I am...
[22:35:33] <Jacky^> jepler: i'm reading right now :) thanks
[22:37:43] <les> hi robin
[22:38:19] <les> oh...oops
[22:40:49] <Jacky^> I can turn motors with a hand..
[22:41:12] <Jacky^> this, probably, mean it have not enough torque
[22:41:32] <les> yes
[22:42:02] <Jacky^> also increasing current :\
[22:42:19] <Jacky^> i wil try increasing voltage tomorrow
[22:42:53] <Jacky^> the transf i'm using seem inadeguate
[22:43:14] <les> last nema 17 motors I used for a project would not tun by hand with a bare shaft
[22:43:47] <Jacky^> how much OZ-in ?
[22:43:51] <les> and I was only running about 1 amp
[22:44:06] <les> 35 in oz
[22:44:15] <Jacky^> Jymmm: helped me to find a datasheet of my motors
[22:44:28] <Jacky^> it have about 90 in oz ..
[22:44:36] <les> vextra?
[22:44:47] <Jacky^> nope, MAE
[22:44:55] <Jacky^> an italian product
[22:44:58] <les> I see
[22:45:02] <Jacky^> old too ..
[22:45:51] <les> Jacky it looks like I will be buying another router spindle for the machine
[22:46:00] <les> auto tool change!
[22:46:13] <Jacky^> cool :) congrats
[22:46:22] <Jacky^> great if work with emc
[22:46:22] <les> 3.7 kW 0-24000 rpm
[22:46:29] <Jacky^> nice
[22:46:35] <les> iso 30 taper tool holders
[22:46:38] <Jacky^> for wood only ?
[22:46:54] <les> Not sure...ceramic ball bearings
[22:47:10] <les> I think it can do metal
[22:47:21] <Jacky^> :)) nice
[22:47:56] <Jymmm> [10:35:39] <Jymmm> Jacky^: The NEW part number for your motor is: Y 20 2220 0210
[22:47:56] <Jymmm> [10:36:00] <Jacky^> how you can get it ? O_O
[22:47:56] <Jymmm> [10:36:01] <Jymmm> Jacky^ : Specs are here, page 6 : http://www.pennmotion.com/pdf/stp_bulletin.pdf
[22:47:59] <les> it is the HSD unit I mentioned a while back
[22:48:34] <Jacky^> Jymmm: ;P
[22:49:16] <Jymmm> les what you think of a $19 USdigital encoder and a lil uC + 1x16 LCD display? think it'll fly w/o too menay additional componenets?
[22:49:24] <Jacky^> les: arent you sure can work on emc yet ?
[22:49:25] <Jymmm> err 2x16 LCD
[22:49:37] <les> Jymmm the spindle has the power draw bar on it....just need a carousel or other mechanism
[22:49:49] <les> I am not sure it will work on emc
[22:50:05] <les> I don't think anyone has worked with that part
[22:50:07] <Jymmm> les Sorry, I was talking about a DRO
[22:50:24] <Jymmm> or DRO + EMC
[22:50:24] <les> all I need is one digital input and output though
[22:50:37] <Jacky^> les: yeah, but is interesting for all ;)
[22:50:42] <les> yes
[22:50:52] <Jymmm> les Heh, I meant for MY machine... to at least be able to measure/compensate for he slop
[22:51:09] <les> when working I have to do 24 or more manual tool changes a day
[22:51:19] <les> too much
[22:51:25] <Jymmm> les one an hour is all we ask =)
[22:51:52] <les> The router collet lasts only a couplw weeks
[22:52:27] <Jymmm> the collet only lasts that long? yeow
[22:54:03] <les> yup
[22:54:20] <Jymmm> well... QUIT STRIPPING THE THREADS! rotf
[22:54:29] <les> you don't want to wait till it starts slipping
[22:54:44] <les> it makes for some spectacular crashes
[22:54:47] <les> I know
[22:54:49] <Jymmm> and quit using an impact wrench to tight the damn thing =)
[22:54:58] <les> haha
[22:55:26] <Jacky^> les: what about the driver of your toolchanger ?
[22:55:39] <Jacky^> unknown components ?
[22:56:33] <Jymmm> les : Is lithium grease be ok?
[22:59:12] <Jacky^> seem a good product, for what i'm reading
[23:02:32] <les> lithium...hmmm
[23:02:35] <les> yeah
[23:02:51] <les> waterproof heh
[23:04:38] <Jacky^> is the geckodrive a lot better than L297-298 circuit ?
[23:04:52] <les> hmm almost no documentation on emc tool change feature
[23:08:16] <Jacky^> les: one day .. will you tell me wich brand tool you use/like :)
[23:13:56] <les> CMT is good
[23:14:17] <Jacky^> les: that what I tried
[23:14:36] <les> I use them a lot
[23:14:49] <les> good quality carbide
[23:16:57] <les> just get feed up and speed down...too low chip load will quickly dull any tool
[23:17:37] <Jacky^> :)
[23:22:54] <Jymmm> les GREASE, not narcotics!
[23:23:45] <Jacky^> Jymmm: i'm using VCR mechanical grease !
[23:23:51] <Jymmm> I'm running out to pickup a grease gun now. Gonna get a couple of grease cartridges at the same time.
[23:23:56] <les> If you are a ball bearing grease IS a narcotic
[23:24:06] <Jacky^> i don't know how good it is, but i've a lot :P
[23:24:22] <Jymmm> lol @ les
[23:24:53] <les> stuff at NAPA is fine
[23:24:53] <Jymmm> I just dont want the shit breaking down prematurely
[23:25:19] <Jymmm> les : they have a few different kinds.... axel grease, white litium grease, etc
[23:25:20] <les> it won't...machine tool grease always fails by contamination
[23:25:37] <Jymmm> be wht lit is pretty thin
[23:25:39] <Jacky^> les: right..
[23:25:46] <Jymmm> but wht litium is pretty thin
[23:25:56] <les> don't use the white stuff
[23:26:06] <les> use wheel bearing grease
[23:26:11] <Jymmm> ok, will do
[23:26:30] <Jymmm> I'm lazy and just gonna buy cartidge
[23:26:43] <les> right that is what I use
[23:26:57] <Jymmm> ok, bbiab.... off to Kragens!
[23:27:01] <les> k
[23:27:23] <Jymmm> I better take one of the zirk fittings with me...
[23:27:33] <les> yeah
[23:27:43] <les> some don't interchange
[23:29:41] <Jymmm> fuck................ no grease inside the slide at all
[23:29:58] <Jymmm> or at least none in the inside of the zirk fitting
[23:30:03] <Jymmm> ok, I'm off