#linuxcnc | Logs for 2014-01-25

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[02:20:34] <Deejay> moin
[07:54:30] <heathmanc> Spindle/VFD issue resolved. Not sure what was wrong, reset back to factory, made one autotune run, fired up linuxcnc and it just worked
[07:58:30] <jthornton> I hate when that happens
[08:34:24] <Jymmm> Hate it more whn it DOESNT happen
[08:41:24] <archivist> it is happening....weather outside looks horrible
[08:42:36] <archivist> lightening to thunder time is rather short
[08:43:05] <Deejay> get outside and let a kite fly :D
[08:45:16] <Jymmm> archivist: Got your LinuxCNC Approved lightening rod(s)?
[08:46:32] <archivist> moving away now, it is up to 3 secs
[08:46:59] <Jymmm> What was the rule? 1 second per mile?
[08:51:03] <archivist> its something like that
[08:55:00] <mozmck> Isn't it the speed of sound? In that case it is 4.6891 seconds per mile :)
[08:57:10] <Jymmm> When you see the flash of a lightning bolt, you can start counting seconds and then divide to see how far away the lightning struck. If it takes 10 seconds for the thunder to roll in, the lightning struck about 2 miles or 3 kilometers away.
[08:58:20] <Jymmm> http://science.howstuffworks.com/nature/climate-weather/storms/question182.htm
[08:58:53] <Jymmm> 1 mile = 5 seconds, 1KM = 3 Seconds
[09:00:04] <Jymmm> It's funny the trivial things we remember as kids
[09:21:31] <Tom_itx> what if there are no seconds to count?
[09:21:33] <Tom_itx> hide?
[09:21:59] <archivist> duck
[09:22:10] <Jymmm> Tom_itx: Place you head between your legs and kiss your ass goodbye.
[09:22:44] <Tom_itx> one hit a tree not 30' from the house late last year
[09:23:25] <Jymmm> Tom_itx: do you have lightening rods on the house?
[09:23:29] <Tom_itx> brown stripes all down the tree and unearthed the ground around it's base
[09:23:57] <Tom_itx> popped the bark off where it hit
[09:24:15] <Jymmm> instant steam
[09:24:34] <Tom_itx> instant soiled britches
[09:24:42] <Jymmm> lol
[09:26:14] <Jymmm> You've seen these before http://upload.wikimedia.org/wikipedia/commons/e/e4/PlanePair2.jpg
[09:26:38] <Jymmm> Works on flesh too http://api.ning.com/files/0EIhDCoNWiaM0lgbcr3ic5VDGRfq7VPuhmTi6okSEwx8HJSXtz1UcMM3AYFvIk0qBBWw-smxZhuTlIP2FNReqlQ5Ig*JCqMB/lightningLichtenberg_figures.jpeg
[09:35:58] <Tom_itx> nice tatoo
[09:36:20] <Jymmm> Tom_itx: ...and the speed of light =)
[09:36:26] <Jymmm> s/and/at/
[09:36:43] <Tom_itx> don't have to wait around feeling all those needle pricks
[09:37:18] <Jymmm> Yeah, you get ten times the pain all at once ;)
[11:40:31] <CaptHindsight> http://www.youtube.com/watch?v=iZE0DYiExr8#t=63 after watching this video I'm glad they have licensing for PE's to design things like bridges
[11:44:15] <eric_unterhausen> that looks pretty disgusting
[11:44:33] <eric_unterhausen> and the mechanism looks silly
[11:44:41] <CaptHindsight> Turd-o-matic
[11:46:35] <MarkusBec> wobelwobel
[11:47:10] <MarkusBec> mechanism looks crapy like a makerbot :)
[11:49:38] <eric_unterhausen> probably has 50 patents
[11:50:18] <IchGuckLive> hi all
[12:12:44] <IchGuckLive> hi all B)
[12:13:45] <IchGuckLive> http://www.youtube.com/watch?v=PkBes1XgfnI DVD engraver today build
[12:13:57] <IchGuckLive> its on a normal Mill
[12:14:27] <IchGuckLive> without blanking just Z height focus control
[12:15:24] <IchGuckLive> Einar_: does you mashine run as expected today
[12:25:50] <Tom_itx> regular DVD laser?
[12:26:02] <Tom_itx> did you need to focus it?
[12:26:48] <IchGuckLive> Zaxis is the focus
[12:26:52] <Loetmichel> IchGuckLive: that sounds not so good.
[12:27:01] <IchGuckLive> about neer exact 2"
[12:27:02] <Loetmichel> the mechanics i meant
[12:27:16] <IchGuckLive> Loetmichel: at this low speed
[12:27:19] <Tom_itx> how did you determine that?
[12:27:22] <Loetmichel> something in the drive train is resonating
[12:27:38] <IchGuckLive> at over 1500mm/min lower noice
[12:28:34] <IchGuckLive> Tom_itx: easy go down to 5mm and pull up as long as it burns Smoke is visabel
[12:28:58] <Loetmichel> IchGuckLive: i meant: there is some play in your drive train, at least it sounds that way
[12:29:01] <IchGuckLive> if in the green glase the Red Laser beam is near white then you are in focus
[12:29:30] <IchGuckLive> Loetmichel: agree but on L298/l297 its that way
[12:29:47] <Loetmichel> it hasnt to be
[12:30:10] <IchGuckLive> agree aslo but i let it on PCB its not
[12:30:42] <Tom_itx> any dvd burner will do?
[12:31:04] <Loetmichel> http://www.youtube.com/watch?v=o53RsosYwGg <- that is a l297 driver board also
[12:31:13] <Loetmichel> ans also relatively slow
[12:31:55] <Tom_itx> you wear goggles when doing it?
[12:32:05] <Loetmichel> IchGuckLive: i have a 50mW UV laser
[12:32:25] <IchGuckLive> wher did you got them
[12:32:27] <Loetmichel> that should work also... i sould check ;-)
[12:32:30] <Loetmichel> ebay
[12:32:46] <Loetmichel> at least the laser can brun black plastics
[12:32:48] <IchGuckLive> Tom_itx: it needs to be a 22x
[12:33:01] <Tom_itx> hotter beam?
[12:33:07] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=14322
[12:33:19] <Loetmichel> Tom_itx: more power
[12:33:23] <Loetmichel> :-)
[12:33:24] <IchGuckLive> Tom_itx: below 100mA it will do nothing
[12:33:32] <IchGuckLive> you need a 250mW diode
[12:33:43] <Loetmichel> the faster the more power the diode has
[12:33:53] <Tom_itx> where did you feed it the 5v from?
[12:37:13] <IchGuckLive> i got it inside the VCC porer line
[12:37:26] <Tom_itx> an IO pin not enough current?
[12:37:27] <IchGuckLive> i got a 5V VCC
[12:37:34] <IchGuckLive> no
[12:37:42] <Tom_itx> so drive a mosfet
[12:37:50] <Tom_itx> then you can turn it on and off better
[12:42:17] <IchGuckLive> you need constand 4mA to not burn the Diode then a signal that gets the full 250ma on
[12:42:56] <Tom_itx> pwm?
[12:43:32] <IchGuckLive> at your own it shortens the livetime but increses the power to near 400mW
[12:44:12] <Tom_itx> why 4ma constant?
[12:44:33] <Tom_itx> start with 4ma then switch to 250ma to burn?
[12:50:22] <IchGuckLive> hi to the new irc yousers of the linuxccn channel
[12:50:38] <IchGuckLive> just ask if we can help you
[12:51:48] <onyedi> hello, can anyone help me test a dual drive setup? My x axis has dual steppers, but i cannot seem to test both of them at the same time, when i run the test only one stepper is driven. Any suggestıons?
[12:52:37] <onyedi> x axis runs fine in linuxcnc main
[12:52:56] <IchGuckLive> onyedi: gantry
[12:53:25] <CHNCguy> Hey Hey Guys ;)
[12:53:39] <IchGuckLive> onyedi: plese post your hal to pastebin
[12:54:01] <IchGuckLive> Loetmichel: whar Break out board do you use
[12:54:04] <onyedi> i dont have it with me sorry it is at work
[12:54:20] <IchGuckLive> ok what brek out board do you use
[12:54:31] <onyedi> pmdx 126
[12:54:51] <IchGuckLive> nice and the drivers are
[12:55:08] <onyedi> leadshine dm876
[12:55:09] <IchGuckLive> i guess you use 2 drivers for your X
[12:55:23] <CHNCguy> I got a pretty simple question: I am running mesa 7i76/5i25 and need to control spindle speed and direction. How would I effectively be able to reverse the motor direction for rigid tapping on a cnc lathe? 0-10vdc for speed, I understand that, but as for switching to go into reverse how does linux handle that? An output? A Relay? Thanks :D
[12:56:10] <onyedi> yes
[12:56:15] <IchGuckLive> CHNCguy: your VDF has a extra pin for that
[12:56:47] <onyedi> IchGuckLive: yes each stepper has its own drive
[12:57:02] <IchGuckLive> onyedi: ok then its easy
[12:58:10] <CHNCguy> let me scroll through the manual, http://www.soonwell.com/ebay_file/user_manual/Inverter-Manual.pdf
[12:58:59] <IchGuckLive> onyedi: you only need to output step and dir to 2 more pins
[12:59:26] <onyedi> IchGuckLive: i setup the pins 2-3 and 6-7 for the x axis, the gantry runs fine when jogged , the problem is with the testing
[12:59:44] <CHNCguy> Hey IchGuckLive, Can u look at 4.2 in the manual, I don't really see a pin... for reverse
[13:00:17] <IchGuckLive> onyedi: what woudt you like to test
[13:00:29] <IchGuckLive> onyedi: 2 diles
[13:00:39] <IchGuckLive> move 120+mm forward
[13:00:43] <IchGuckLive> and reverse
[13:01:00] <IchGuckLive> then setup the dilas and do it again
[13:01:08] <IchGuckLive> and you got your backlash
[13:01:28] <IchGuckLive> onyedi: on homing only home on one side
[13:01:46] <IchGuckLive> CHNCguy: i m on
[13:02:14] <onyedi> IchGuckLive: i would like to test using Stepconf and find the best velocity and acceleration ratio, so when i try to test the X axis it just moves only one stepper not both of them
[13:02:48] <onyedi> IchGuckLive: but main program runs fine as well as jogging manually
[13:02:56] <IchGuckLive> onyedi: use nomal entry
[13:02:57] <onyedi> IchGuckLive: cuts are fine also
[13:03:10] <IchGuckLive> onyedi: what V is on the stepper
[13:03:19] <IchGuckLive> Driver !
[13:03:25] <onyedi> 60v
[13:03:39] <IchGuckLive> ok cable length
[13:03:48] <onyedi> 2m
[13:03:59] <IchGuckLive> you are good to go 5m/min
[13:04:07] <onyedi> yes
[13:04:22] <IchGuckLive> use 2000 2000 5000 8000 for timing
[13:04:23] <onyedi> it goes 5m flawless
[13:04:46] <IchGuckLive> and 85mm/sec with 250mm/s²
[13:04:57] <IchGuckLive> then you are ok
[13:05:05] <IchGuckLive> why woudt you like to go faster
[13:05:53] <onyedi> let me rephrase the problem; when using Stepconf, X axis test only moves one stepper.
[13:05:54] <IchGuckLive> onyedi: open up the INI and change the Baseperiod down from 100000 to 30000
[13:06:22] <IchGuckLive> onyedi: that is normal as it internal did not use HAÖL
[13:06:39] <IchGuckLive> the interpreter makes its own config
[13:06:54] <IchGuckLive> so its not posible to test gantry in stepconf
[13:07:02] <onyedi> ok so there is no way to use the Stepconf to test a dual stepper gantry?
[13:07:25] <onyedi> ok thank you for your answer
[13:07:27] <IchGuckLive> its only a setup not a test
[13:08:23] <IchGuckLive> CHNCguy: i see no reverse pin
[13:08:39] <CHNCguy> I think I figured it out, there is an input on terminal x1 and x2, and you can set p3.01(1) for forward and p3.02(2) for reverse (manual page 29). :)
[13:08:52] <CHNCguy> will that work?
[13:09:00] <onyedi> one more question, with pmdx -126 i cant seem to use charge pump even if i put pin 17 as the charge pump. any suggestions? Without chargepump everything is ok.
[13:13:36] <IchGuckLive> CHNCguy: that is the goal
[13:14:03] <CHNCguy> Cool thanks ;)
[13:14:43] <pcw_home> unfortunately that VFD doesn't seem to be configurable for 2 wire ENABLE/DIR mode
[13:14:45] <pcw_home> so will need and external relay for direction change
[13:16:31] <CHNCguy> well i think its, check out page 30 in the manual P3.08
[13:16:44] <CHNCguy> it says 2-wire control
[13:17:04] <IchGuckLive> P3.08
[13:17:23] <CHNCguy> how would I go about and set it up?
[13:18:16] <pcw_home> Yeah but FOR/REV 2 wire mode unfortunately the 7I76 spindle control outputs only support ENABLE/DIR
[13:18:42] <IchGuckLive> he can use GPIO
[13:19:16] <archivist> there seems to be a 0= -100% and 10=100% mode
[13:19:56] <CHNCguy> which would be best? And how would I set it up?
[13:20:18] <CHNCguy> You guys are awesome by the way :D
[13:20:18] <IchGuckLive> onyedi: http://wiki.linuxcnc.org/cgi-bin/wiki.pl?About_Charge_Pumps
[13:22:54] <IchGuckLive> onyedi: did you set correct mode on the pmdx
[13:22:55] <archivist> see page 43 for a graph going through 0
[13:23:47] <pcw_home> seems possible but not clear how to setup:
[13:23:49] <pcw_home> 2:3-wire control mode1: X4 is the multifunctional input terminal. Run command is given by X1, direction command by X2.
[13:23:50] <archivist> seems to be the PID mode
[13:24:31] <onyedi> yes I did config 1 is on (charge pump wişth normal mode), i assumed chargepump will work with just setting the pin 17 as chargepump in linuxcnc
[13:25:39] <CHNCguy> archivist, so if I output 5v it will be 0 or stopped, and 0v is max -100% (is this reverse?) and 10v is 100% (is this forward?)
[13:25:40] <IchGuckLive> so open close close 1-3
[13:26:01] <onyedi> yes exactly
[13:26:19] <onyedi> i can make it work with another software
[13:26:23] <archivist> CHNCguy, that is my assumption yes, I think some experimentation is needed
[13:27:11] <onyedi> and when i turn config 1 off, it works as expected without the chargepump
[13:27:51] <onyedi> wikipage says i need to loadrt charge_pump
[13:28:04] <IchGuckLive> did you do that
[13:28:08] <onyedi> nope
[13:28:18] <IchGuckLive> then it wont work
[13:28:23] <onyedi> its a fresh installation of ubuntu and linuxcnc
[13:28:38] <CHNCguy> Yes I agree, so how exactly does linuxcnc handle to output with the 5i25 and 7i76? Meaning when I say S5000 (m3 clockwise) in gcode, how will it know to output 10vdc on spindle output pin. And If Input S5000 m4 (clockwise), it will out put 0vdc?
[13:28:38] <onyedi> i just installed it today and gave it a try
[13:28:46] <IchGuckLive> ok
[13:28:59] <IchGuckLive> onyedi: where are you from USA Europ
[13:29:06] <CHNCguy> i mean counterclockwise*
[13:29:10] <CHNCguy> for m4
[13:29:15] <onyedi> Turkey
[13:29:23] <IchGuckLive> im in germany
[13:30:07] <onyedi> planning on visiting next year
[13:30:30] <IchGuckLive> onyedi: so add the 4 lines to your hal
[13:31:24] <IchGuckLive> onyedi: http://linuxcnc.org/docs/html/man/man9/charge_pump.9.html
[13:33:05] <CHNCguy> Archivist, Will i need to set anything within linux or the hal file or ini to handle the spindle speed and output voltage?
[13:33:54] <onyedi> thank you i will try that, this wiki link you gave explains it all :)
[13:34:14] <onyedi> sorry i am a newbie for linuxcnc
[13:34:29] <IchGuckLive> NP thats why we are here
[13:34:54] <onyedi> good day to you all
[13:35:07] <onyedi> time for a nap
[13:35:09] <onyedi> :)
[13:35:48] <IchGuckLive> im also off BYE ;-)
[13:46:42] <archivist> CHNCguy, you need someone who has done solid tapping with a similar vfd, I have not
[13:47:56] <archivist> either mill or lathe
[13:49:47] <CHNCguy> True, I think JT converted his CHNC and uses rigid tapping
[13:50:13] <CHNCguy> Has anyone here done rigid tapping with a vfd? IchGuckLive?
[13:55:25] <archivist> I imagine it will just work when you have scaled it right
[14:01:27] <CHNCguy> Normally how do you set 7.5v for 2500 rpm? or 5v for 0? or 2.5v for -2500rpm?
[14:02:44] <owhite> Hello people. I'm using gmoccapy and it looks really great. Does anyone have experience running two monitors with 12.04? I'm wondering how difficult it is to set up one touchscreen running gmoccapy, and the other would be a "regular" desktop.
[14:03:04] <archivist> http://linuxcnc.org/docs/html/examples/spindle.html
[14:03:20] <CHNCguy> Thanks archivits ill read it ;)
[14:18:01] <CHNCguy> archivist, can u look at page 44 in the manual? do you see where it says,p3 group? there is a forward and rev enable pin, can I use this?
[14:18:46] <CHNCguy> nevermind, this doesnt do much :D
[14:27:59] <CHNCguy> hey guys, i figured out I can run the vfd in 2 wire more on page 45 of the manual http://www.soonwell.com/ebay_file/user_manual/Inverter-Manual.pdf figure 8-7. But how do I set up linuxcnc to actuate the relays to select forward reverse and stop?
[14:29:54] <CHNCguy> i need 2 relays, k1 and k2, if k1 and k2 are open the drive stops, if k1 is Closed and k2 is open the drive runs forward, if k1 is open and k2 is closed it runs in reverse. How would I set up linux to output accordingly?
[14:38:15] <pcw_home> the VFD manual does seem to suggest that a enable/dir mode is available:
[14:38:17] <pcw_home> 2:3-wire control mode1: X4 is the multifunctional input terminal. Run command is given by X1, direction command by X2.
[14:39:02] <CHNCguy> which page are u refering too?
[14:40:18] <pcw_home> bottom of page 45
[14:41:16] <CHNCguy> Yes I see that, but it wants a logic of relays to sense dir and stop commands, how would I set up linux to make this work?
[14:41:23] <CHNCguy> i have 7i76 board
[14:41:50] <pcw_home> No relays needed if it can do ENABLE/DIR
[14:42:37] <CHNCguy> do you know what I would need to hook up? I see the 3 wire but i am confused as how to get it to work
[14:42:44] <CHNCguy> on page 46
[14:42:44] <eric_unterhausen> all of the vfd's I have ever bought have forward/reverse/stop
[14:42:52] <pcw_home> I would play with a couple switches and seen if it can do ENABLE/DIR mode
[14:42:58] <eric_unterhausen> so it's not really enable/dir
[14:43:46] <CHNCguy> Hi eric, i have similiar experiences, have u looked at page 45 http://www.soonwell.com/ebay_file/user_manual/Inverter-Manual.pdf in this manual?
[14:43:59] <pcw_home> Most can do enable/dir but not all
[14:46:36] <CHNCguy> I think I can set up some relays for the fwd rev logic. But this would all be so much easier If I can just use this lower limit function on page 43
[14:47:24] <CHNCguy> where 0v from linux on spindle output voltage pin = -100% (rev) on the drive, and 5v= 0 (stop) and 10v = +100 (fwd) on the drive
[14:47:33] <eric_unterhausen> too bad their 2-wire mode is so stupid
[14:47:36] <CHNCguy> can this be done within linux and the hal?
[14:47:46] <CHNCguy> I know right.......
[14:48:21] <pcw_home> I think 3 wire mode 1 is correct if the text is correct
[14:49:27] <pcw_home> (the mode description text is _above_ the drawing)
[14:49:52] <eric_unterhausen> 3 wire mode description is really hard to understand
[14:50:43] <CHNCguy> I know... so let me get this straight, if sb1 is closed, x1 gets a com signal and it goes forward
[14:51:08] <pcw_home> it says X1 is run and X2 is direction in that mode
[14:51:12] <CHNCguy> if sb3 is closed and x2 gets the signal for com, it goes reverse
[14:51:42] <CHNCguy> ?
[14:52:13] <CHNCguy> So then do I have to switch sb1 and sb2? and sb2 and sb3 at the same time? it says stop command by normally closed sb2
[14:52:18] <pcw_home> 2:3-wire control mode1: Run command is given by X1, direction command by X2, X4 is normally close input.
[14:52:27] <pcw_home> (from page 45)
[14:54:22] <zeeshan> guys
[14:54:35] <zeeshan> should the step and dir signals be getting constant +5v when the breakout board is powered?
[14:54:36] <CHNCguy> that would only give me fwd or rev? But not both...
[14:55:53] <pcw_home> I am assuming direction means direction
[14:56:38] <eric_unterhausen> that's just crazy talk
[14:56:47] <pcw_home> zeeshan: depending on step polarity and current direction, possibly
[14:57:03] <CHNCguy> ahhhh I got it LOL tricky beast. Check this out, page 45. 0:2-wire control mode 1, if I output no change to k1 and k2 the drive is in stop mode
[14:57:13] <CHNCguy> if I close k1 it goes forward
[14:57:21] <CHNCguy> if i open k1 it stops
[14:57:25] <zeeshan> pcw_home: do you work at automation technologies?
[14:57:26] <zeeshan> :)
[14:57:31] <CHNCguy> if I close k2 it goes rev
[14:57:38] <CHNCguy> if I open k2 it stops
[14:57:49] <CHNCguy> right?
[14:58:38] <eric_unterhausen> yes
[14:58:47] <CHNCguy> whoot! lol
[14:59:29] <pcw_home> Thats a for/rev mode so you need a relay to do that with the 7I76
[14:59:30] <pcw_home> It looks like it may support a DIR/ENABLE mode (3 wire mode 1)
[15:00:23] <pcw_home> (but I would try with a couple switches)
[15:00:26] <eric_unterhausen> I would set up 3 wire mode one and test it
[15:01:07] <CHNCguy> gotcha, thanks guys, so I would just set up the hal pins net spindle-fwd motion.spindle-forward => parport.0.pin-16-out
[15:01:07] <CHNCguy> net spindle-rev motion.spindle-reverse => parport.0.pin-17-out
[15:01:35] <pcw_home> Umm I thought this was for a 7I76
[15:01:41] <CHNCguy> or change the pins to what I want, i have 24vdc for the IO's it will give me 24vdc out on those pins right?
[15:01:55] <CHNCguy> Yes it is, I just copied and pasted those from the link here
[15:02:00] <CHNCguy> http://linuxcnc.org/docs/html/examples/spindle.html#_spindle_direction
[15:02:15] <CHNCguy> Those are probably not the right pins but I just wanted to ask
[15:02:55] <CHNCguy> What pins would they be GPIO something something right?
[15:03:02] <pcw_home> Theres a bit more work because the spindle speed value is signed
[15:04:06] <CHNCguy> signed? Not sure what u mean
[15:04:29] <pcw_home> basically you wire the motion spindle_on pin to 7i76_spinena and motion spin forward (or rev) to 7I76 spin_dir
[15:05:27] <pcw_home> but you need to put the spindle speed through a absolute value component
[15:05:29] <pcw_home> (since it will be negative for reverse spindle speeds)
[15:06:04] <CHNCguy> the voltage will be negative on the output to spinena?
[15:06:22] <CHNCguy> If so how would I include that absolute value component so it only outputs positive?
[15:12:07] <CHNCguy> pcw_home
[15:14:34] <zeeshan> guys i have to go buy a parallel port cable
[15:14:55] <zeeshan> any db25 cable that says "Parallel Printer Cable IEEE1284"
[15:14:59] <zeeshan> should be wired straight through?
[15:15:12] <CHNCguy> i would pin it out to be sure zeeshawn
[15:15:24] <zeeshan> i will definitely do that
[15:15:53] <zeeshan> IEEE 1284 is a standard that defines bi-directional parallel communications between computers and other devices
[15:16:00] <zeeshan> thats a good sign :)
[15:35:19] <CHNCguy> true
[15:35:32] <CHNCguy> Zeeshawn do you have a spindle vfd??
[15:37:12] <zeeshan> yes
[15:37:28] <CHNCguy> how did you set it up for forward and reverse?
[15:37:54] <zeeshan> they're on manual machines right now
[15:38:04] <zeeshan> on one machine its just using the keypad (you can remotely mount it)
[15:38:09] <zeeshan> and on the other its a selector switch
[15:38:55] <CHNCguy> Oh, I am trying to get mine to wiork with linux
[15:39:07] <zeeshan> using step and dir?
[15:39:12] <zeeshan> 10V?
[15:39:12] <CHNCguy> I was just curious about what voltage was needed as the spindle voltage
[15:39:22] <CHNCguy> The analog 10v
[15:39:49] <zeeshan> i haven't gotten to the point where i setup spindle control from the computer ":)
[15:39:53] <zeeshan> just have done it manually through switches
[15:45:08] <CHNCguy> ohh ;0
[15:52:00] <Deejay> gn8
[15:52:16] <CHNCguy> night
[15:56:02] <CHNCguy> JT-shop, so how would I make that abs component?
[15:57:07] <CHNCguy> Hey Guys I am trying to make a value statement for the output of my 7i76 to my vfd, the vfd only accepts +0-10v for speed
[15:57:44] <CHNCguy> I can run the run the drive in reverse with switches no prob. But how do I make sure the output of the spindle pin is always +
[15:57:45] <CHNCguy> ?
[15:57:47] <JT-Shop> first you load a component then you add it to a thread then you can connect it up in hal
[15:58:02] <JT-Shop> http://linuxcnc.org/docs/html/man/man9/abs.9.html
[15:59:00] <CHNCguy> so... loadrt abs.N.out ?
[15:59:12] <JT-Shop> good guess
[15:59:25] <CHNCguy> ;) where would I put this line in the hal file?
[15:59:28] <JT-Shop> loadrt abs
[16:00:01] <JT-Shop> I usually load all my components in the start of the main hal file
[16:00:28] <zeeshan> CHNCguy:
[16:00:29] <JT-Shop> http://linuxcnc.org/docs/html/hal/basic_hal.html
[16:00:30] <zeeshan> hi
[16:00:37] <JT-Shop> read the first few paragraphs
[16:00:54] <zeeshan> i dont know if this helps
[16:00:55] <zeeshan> http://cnc4pc.com/Files/EMC2.txt
[16:00:58] <zeeshan> http://www.cnc4pc.com/Store/osc/product_info.php?products_id=161
[16:01:10] <zeeshan> thats what they do for spindle control for 0-10v vfd control
[16:03:50] <CHNCguy> JT-Shop not much of that makes sense to me :), Not yet at least :D
[16:03:57] <CHNCguy> Thanks zeeshan ill read it now
[16:04:12] <JT-Shop> CHNCguy, basically you put the abs between the motion.spindle-speed-out
[16:04:46] <JT-Shop> CHNCguy, it will, just keep reading it while I search for an example
[16:04:52] <JT-Shop> I don't have much time atm
[16:05:02] <CHNCguy> I appreciate any help JT ;)
[16:09:06] <JT-Shop> oh guess what my spindle uses 0-10v http://pastebin.com/ie9YpsEi
[16:10:14] <CHNCguy> ;)
[16:10:19] <CHNCguy> So how did u set up your hal?
[16:10:28] <JT-Shop> so much for the old memory
[16:10:32] <CHNCguy> haha
[16:10:35] <JT-Shop> the pastebin is my hal
[16:11:01] <CHNCguy> ohh cool, I can't view it here but I will get it tonight and check it out :)
[16:13:58] <MrSunshine> Loetmichel, when reground the spindle now the chirping sound is gone and it can plow material like hell without breaking the router bit =)
[16:14:12] <MrSunshine> so i guess i was right it was the runout of the spindle causing the problem =)
[16:14:46] <MrSunshine> from 0.1mm runout to 0.01mm runout now (runout in spindle cone is 0 but ER collet has runout) ALOT of vibrations is gone from the spindle and sounds alot nicer =)
[16:14:53] <JT-Shop> adjusting the tracks went well!
[16:15:10] <CHNCguy> tracks? what u building JT? :D
[16:15:41] <JT-Shop> I just brought home a John Deere 350 bulldozer
[16:15:49] <CHNCguy> WOW :D
[16:16:20] <CHNCguy> cool, does it run?
[16:16:39] <JT-Shop> the old gal runs good
[16:17:08] <CHNCguy> JT, did you apply 10v power to your pins 1 and 3 on tb4? http://www.mesanet.com/pdf/parallel/7i76man.pdf page 13
[16:19:06] <CaptHindsight> JT-Shop: get tired of the Spyder? :)
[16:20:05] <JT-Shop> CHNCguy, my CHNC has a 5i20
[16:20:28] <JT-Shop> been too cold to ride the Spyder
[16:21:11] <CHNCguy> but did you still have to apply a 10vdc reference voltage to the spindle input for the output?
[16:21:48] <JT-Shop> I don't understand that question
[16:22:25] <JT-Shop> http://www.gnipsel.com/files/chnc/wiring/7i33_TB-1.pdf
[16:22:44] <CaptHindsight> I was eyeing this the other day http://www.ebay.com/itm/380713886099 10 TON YARD CRANE
[16:23:08] <JT-Shop> nice
[16:23:30] <JT-Shop> http://www.gnipsel.com/images/JD350B/350b01.jpg
[16:23:56] <MrSunshine> http://blog.cnccookbook.com/2013/12/02/runout-versus-tool-life/ good reading to understand a bit about runout and tool life =)
[16:24:06] <CHNCguy> the 0-10v output from the card which goes to a vfd, where does the 10vdc come from?
[16:24:16] <CHNCguy> Nice tractor :D
[16:24:33] <MrSunshine> with those calculations, before my grinding of the spindle cone i had an expected life of the tool at like 1 - 2% :P
[16:24:42] <JT-Shop> from Aout2 on the 7i33
[16:24:50] <JT-Shop> what tractor?
[16:25:02] <Loetmichel> MrSunshine: congrats!
[16:26:10] <CHNCguy> your doser :)
[16:27:23] <MrSunshine> Loetmichel, ta =)
[16:27:35] <heathmanc> anybody recommend some good small limit/home switches?
[16:28:02] <Loetmichel> heathmanc: i use these all the time: http://www.cyrom.org/palbum/main.php?g2_itemId=560
[16:28:04] <CHNCguy> small microswitch from radioshack or ebay (the one with the small roller on the end)
[16:28:22] <Loetmichel> cheap as fuck and less than 0,01mm error when run over sideways
[16:28:42] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=7414
[16:28:48] <Loetmichel> http://www.cyrom.org/palbum/main.php?g2_itemId=7411
[16:29:20] <Loetmichel> i.e: less than 2 steps difference when checking the position multiple times
[16:29:39] <heathmanc> seems fair enough
[16:29:41] <Loetmichel> even in that dirty conditions
[16:30:32] <Loetmichel> CHNCguy: these switches with the roller at the end have some play usually, not so good actually for reference switches.
[16:30:51] <heathmanc> will be using an index pulse with them
[16:37:10] <zeeshan> Loetmichel: do you like proximity limit switches?
[16:39:03] <CHNCguy> well limit switches ;)
[16:39:31] <CHNCguy> JT-shop, does our encoders have the index pulse? Do you have the wiring info for the encoders?
[16:43:27] <heathmanc> what I would prefer, is a round plunger type, small
[16:43:51] <Jymmm> microswitch
[16:44:01] <heathmanc> http://www.super-tech.com/root/taig/pix/STA-MicroMill/ASM14_m.jpg
[16:44:15] <heathmanc> it is for a taig mill, so one just like this would be great
[16:45:13] <zeeshan> does that trip at full plunge dept
[16:45:15] <zeeshan> depth
[16:45:20] <zeeshan> or just asap the plunger moves
[16:46:00] <heathmanc> that I don't know
[16:46:06] <zeeshan> its not that big of a deal :P
[16:46:08] <zeeshan> you can always space it
[16:46:17] <heathmanc> right
[16:46:33] <zeeshan> http://www.motiontek.ca/pdf/PSR4.pdf
[16:46:33] <JT-Shop> somewhere in the middle
[16:46:34] <zeeshan> i like those
[16:46:54] <zeeshan> but they wouldnt work for homing :P
[16:48:07] <JT-Shop> that's what my CHNC has on for homing
[16:48:27] <zeeshan> its consistent?
[16:48:59] <JT-Shop> down to the index yes
[16:49:10] <zeeshan> wow i did not know that
[16:49:26] <eric_unterhausen> I have some inductive sensors too, hoping to do switch/index homing
[16:49:29] <heathmanc> just need something to get in the ballpark and use the index
[16:49:44] <heathmanc> i am considering something inductive
[16:50:12] <zeeshan> i guess the repeatibility of a non contact switch would be better
[16:50:20] <CHNCguy> Thanks JT, heres an interesting questions, would an x or z axis encoder work for a spindle encoder?
[16:50:37] <zeeshan> CHNCguy: why go through the trouble
[16:50:39] <zeeshan> when you can get this:
[16:50:58] <zeeshan> http://www.cnc4pc.com/Store/osc/product_info.php?cPath=25&products_id=129
[16:51:00] <zeeshan> so cheap :D
[16:55:13] <CHNCguy> I have one of those lol :)
[16:56:21] <zeeshan> =D
[16:56:33] <CHNCguy> You need at least 100ppr encoder to work right I believe, that would require you to make 100 perfect dots or holes for the sensor to pick up
[16:56:44] <CHNCguy> works great with mach 3, not so great for linux LOL
[16:57:05] <zeeshan> water jet can hold 0.003" tolerance
[16:57:06] <zeeshan> ;D
[16:57:10] <zeeshan> outsource? :D
[16:58:26] <CHNCguy> There are waterjets that can hold better than that...theres one from germany that makes clock parts 0.0005" accuracy
[16:58:33] <JT-Shop> puppy seal of approval http://imagebin.org/288739
[16:58:57] <CHNCguy> nice JT
[16:59:26] <CHNCguy> are the spindle encoders the same as the axis encoders, they look the same and mount the same....
[16:59:30] <Jymmm> JT-Shop: Which track did the dog pee on?
[16:59:33] <CHNCguy> JT-shop
[17:09:56] <JT-Shop> she just supervises
[17:13:54] <nilsht> Anyone know a place to buy cheap depth setting/marking rings for bits?
[17:17:19] <eric_unterhausen> lathe
[17:23:23] <bpuk> If PCW is about: I'm looking to upgrade my router from mach - currently using a Gecko G540. I have linear encoders ready to fit. Planning to fit a 5i25 - the external port will be used for the g540, do you have a daughtercard that will give 4 encoder inputs and a 0-10v output for the VFD?
[17:26:08] <bpuk> gah. Ignore that - I'm being an idiot - the G540 has a 10v output. So I just need a 7I85
[17:26:32] <Tom_itx> JT-Shop you been out playin in the dirt today?
[17:32:43] <JT-Shop> not yet, I was fixing a wiring problem in my buddies barn who happens to own a trailer that can haul heavy loads... worked out great he hauled the dozer home for me
[17:33:09] <JT-Shop> I need to service it and fix a few minor things and she is ready to push dirt
[17:40:26] * Jymmm read that as JT-Shop servicing the winows
[17:40:33] <Jymmm> widows*
[17:41:12] <Jymmm> ..one LAST time.
[17:45:10] <heathmanc> a dozer is like an ultimate man's tool
[17:45:31] <JT-Shop> I need to get some track grease and a low pressure grease gun for the track rollers
[17:46:07] <rob_h> u been spending more money JT-Shop i see
[17:46:27] <JT-Shop> lol, can't take it with you
[17:46:32] <Jymmm> JT-Shop: just grab some gloves, grab a handful of track lube and slather it on baby!
[17:46:35] <rob_h> that is very true
[17:47:01] <JT-Shop> hi rob_h
[17:47:05] <CHNCguy> thanks for all the help JT and the gang ;) Till next time ;D
[17:47:10] <CHNCguy> GN8
[17:47:13] <JT-Shop> Jymmm, it don't work that way
[17:47:19] <JT-Shop> CHNCguy, have fun
[17:47:20] <rob_h> CHNCguy, CHNC encoder stock is 4000PPR btw
[17:47:35] <JT-Shop> and thank rob_h for the spindle hal
[17:47:36] <rob_h> axis ones cant rember what they are but they are the same, fix the bracket
[17:47:42] <Jymmm> JT-Shop: That's not what she said
[17:47:43] <CHNCguy> it is?
[17:47:55] <rob_h> u have fanuc motor still?
[17:48:04] <CHNCguy> ya
[17:48:12] <CHNCguy> the 200+lb monster motor LOL
[17:48:13] <rob_h> i saw your VFD question above, i just got in was reading over logs real fast
[17:48:22] <CHNCguy> any help?
[17:48:27] <rob_h> says ur drive is close loop vector only
[17:48:38] <CHNCguy> You can set it to vectorless
[17:49:03] <rob_h> mode where does not use a ecndoer yea openloop... closeloop needs encoder feedback from motor
[17:49:09] <CHNCguy> there is 2 settings, there is an auto tune in the beginning manual to set it for vectorless
[17:49:26] <CHNCguy> the vfd can be blind, linuxcnc will tell it what speed and direction right?
[17:49:35] <CHNCguy> With the encoder feedback
[17:49:48] <rob_h> i have found over years running real spindle motors in openloop vector does not work too grate.. well not for our use, hoppy use would work fine i guess
[17:50:03] <rob_h> soon as slap encoder feedback on they come back tolife almost as good as a real spindle drive
[17:50:05] <CHNCguy> well the spindle does have a encoder inspide of it
[17:50:14] <CHNCguy> inside*
[17:50:42] <CHNCguy> I was reading the fanuc manual for the drive and the CHNC schematic, it has a pulsing mechanism, I assume is an encoder....
[17:50:52] <rob_h> inside motor yes
[17:50:58] <CHNCguy> When I mean spindle, I mean the motor
[17:51:01] <rob_h> a gear type wheel and a pickup
[17:51:07] <rob_h> but its sine and cosine output
[17:51:20] <CHNCguy> So we cant use it for my vfd?
[17:51:46] <rob_h> only if you convert it to square wave, or have a drive option that can read in sine cosine. i have not read your manual
[17:51:53] <rob_h> only look realy quick and saw what modes it did
[17:52:21] <rob_h> what size VFD did u get? motor in our CHNCs mine and johns are the 5.5kw motors
[17:52:36] <CHNCguy> i have a 7.5kw motor
[17:52:43] <CHNCguy> I got a 7.5kw vfd
[17:52:54] <rob_h> urs a CHNC 1 or 2
[17:52:57] <CHNCguy> 2
[17:53:06] <CHNCguy> II SP
[17:53:06] <rob_h> maybe they added a bigger motor for some reason then
[17:53:25] <CHNCguy> it is for sure a 7.5kw, it says it on the name plates
[17:53:36] <rob_h> sure.. so 44amp motor?
[17:53:56] <CHNCguy> not sure about the amperage, but I checked this before buying the VFD
[17:54:17] <rob_h> says on same plate 30min and const ratings
[17:54:20] <CHNCguy> I don't have it near me to check, it weighs about 200+ lbs though....just the motor, not including the plate
[17:54:41] <rob_h> i know our mills have the 7.5kw motors on them
[17:55:20] <CHNCguy> Mmm ill double check :)
[17:55:21] <rob_h> but our chnc 1 are not 1:1 gearing i found... motor does 6000rpm but spindle is only doing 5000rpm
[17:55:35] <rob_h> dont know about 2 maybe its 1:1 why a bigger motor
[17:56:07] <CHNCguy> probably
[17:56:12] <CHNCguy> how heavy is yours? :)
[17:56:26] <rob_h> so if u have not checked that yet... when u run VFD and it says its doing 4000rpm say and linuxcnc says spindle encoder is less then probly know why
[17:56:38] <rob_h> how heavy what? the motor
[17:56:44] <CHNCguy> yes, just curious
[17:56:51] <rob_h> pritty much the same id have to look in manual to see
[17:57:03] <rob_h> but 5.5kw and a 7.5kw motor is much diff in size
[17:57:03] <CHNCguy> See, I am completely retrofitting it
[17:57:38] <CHNCguy> I took the entire lathe out including motor and am mounting it on a benchtop style setup
[17:57:48] <CHNCguy> the enclosures were crap
[17:57:54] <zeeshan> what vfd aare you using btw?
[17:58:03] <rob_h> whats the model number of VFD
[17:58:24] <zeeshan> teco and eaton drives use 0-10v input as one way to control the speed
[17:58:42] <CHNCguy> its a Hyria Inverter 10hp SL series SL-275EE
[17:59:00] <zeeshan> chinese special!
[17:59:00] <zeeshan> :D
[17:59:07] <rob_h> single phase
[17:59:11] <CHNCguy> 3phase input
[17:59:42] <CHNCguy> I have many of these and they work great, just havnt used them in conjunction with a linux or cnc
[17:59:53] <zeeshan> looks very much like my eaton drive
[17:59:59] <zeeshan> guaranteed its got 0-10v control ;D
[18:00:07] <CHNCguy> It does have 0-10v control
[18:00:11] <rob_h> yea but these fanuc motors and other real spindle motors do love to be driven unlike a normal induction motor
[18:00:30] <zeeshan> usually the finned type motors like vfd
[18:00:45] <CHNCguy> If the drive cant run it good, ill get something else, no biggy ;)
[18:00:45] <zeeshan> those sheet metal ones don't
[18:01:00] <zeeshan> it should run it good
[18:01:07] <zeeshan> just hook it up in manual mode and get it running like that first
[18:01:12] <zeeshan> before trying to computer control it
[18:01:18] <rob_h> does this VFD havea heavy duty mode and normal/light mode?
[18:01:47] <zeeshan> is it sensorless vector
[18:01:54] <CHNCguy> I don't know about heavy duty or not but I know it can run 30mins at 150% its rating
[18:02:02] <CHNCguy> it is sensorless vector
[18:02:06] <zeeshan> sweet
[18:02:07] <CHNCguy> or sensed vector
[18:02:08] <zeeshan> so its so easy to setup then
[18:02:16] <CHNCguy> you can choose
[18:02:23] <zeeshan> you dont really need sensed vector for turning applications in my opinion
[18:02:38] <rob_h> depends how much cut you take ;)
[18:02:42] <CHNCguy> The setup calls for a simple auto tuning with no load and it sets all the paramaters
[18:02:50] <zeeshan> the only place from what i've read that sensed vector shines is at 0-5hz
[18:02:52] <CHNCguy> like winding current and all that
[18:03:00] <zeeshan> the sensorless vector works great at all otehr frequencies
[18:03:16] <zeeshan> yea you can't have any pulley connected to it when auto tuning
[18:03:38] <zeeshan> after you're done autotuning, you will rarely see speed flucations
[18:03:38] <rob_h> it might alarm out on some things in auto tune too
[18:03:49] <rob_h> as fanuc motors are built very speshial for high HP high speed
[18:04:05] <zeeshan> i thought fanuc motors were servers
[18:04:07] <rob_h> some moan about induction readings and such due to the values
[18:04:07] <zeeshan> *servos
[18:04:09] <CHNCguy> I know I have to get a braking resistor....
[18:04:34] <rob_h> 1kw brake resistor should do
[18:04:42] <CHNCguy> mine are 3 phase motors
[18:04:49] <zeeshan> ah okay
[18:04:50] <CHNCguy> not dc
[18:05:04] <rob_h> he means on spindle motors more newer machines are true servo motors
[18:05:14] <rob_h> just very high speed, hight HP servo motors
[18:05:15] <zeeshan> yea cause at work we could index the spindle
[18:05:20] <CHNCguy> ohhh
[18:05:22] <zeeshan> at various positions so milling can be done
[18:05:25] <rob_h> yea u can on induction motors
[18:05:32] <rob_h> just need a realy good vector drive
[18:06:01] <rob_h> i just put a yaskawa on our mill. and that thing runs the mitsubishi motor sweet now.. orientates it nicly
[18:06:18] <zeeshan> yaskawa makes nice drives
[18:06:23] <rob_h> afew other drives i have tryed, well they cant do it very well.. yaskawa does have a spindle firmware installed tho
[18:06:25] <zeeshan> expensive though!
[18:06:43] <rob_h> well i throught it was not bad priced, 1600 including tax and encoder board
[18:06:47] <rob_h> 40amp drive
[18:07:05] <CHNCguy> hey rob are u running linux on urs? or the old control?
[18:07:09] <rob_h> every one else was around that price too
[18:07:29] <rob_h> linuxcnc on, CHNC , Superslants 2x off, leadwell VMC
[18:07:42] <rob_h> soon to be a 2nd VMC when i get time
[18:07:52] <rob_h> and a 3rd superslant with power tooling when i get time
[18:08:01] <rob_h> thats a 4 axis machine also
[18:08:26] <CHNCguy> I got a guy thats gonna give me 2 cincinatti vmcs that I can convert to linuxcnc, you think its worth the effort?
[18:08:35] <rob_h> love to change the sliding head over but that will have to stay mitsubishi for now as no way linuxcnc can handle all them axis
[18:08:55] <rob_h> cinci not my kinda machine
[18:09:04] <rob_h> but depends on the machine etc...
[18:09:35] <rob_h> if needs new ball screw bearings, are screws in good condition, how about spindle bearings.. what slides like etc etc
[18:09:46] <CHNCguy> Im still learning this linuxcnc stuff, its taking a while...
[18:10:10] <rob_h> i rember doing my firm machine the VMC lol.. took awhile yea
[18:10:39] <rob_h> now days seems to take ages putting wires in
[18:13:23] <CaptHindsight> rob_h: how many axes would that be?
[18:13:47] <rob_h> for?
[18:14:55] <rob_h> CHNCguy, page 45 of manual shows u how to wire vfd, then u just need to feed a 0-10v analog from mesa card to the drive and away you go
[18:15:31] <CaptHindsight> rob_h: " to change the sliding head over"
[18:16:25] <rob_h> erm, 6 only a citizen L16 VIII , but its more having use of working with sub spindle while main is working with out putting two PCs in side and linking them
[18:17:00] <rob_h> im sure some day soon dev guys will have multi linuxcnc instanaces working on one machine :)
[18:18:09] <CHNCguy> thanks rob, well gn8 guys :)
[18:18:13] <CHNCguy> thanks zeeshan
[18:18:17] <CHNCguy> that JT
[18:18:23] <CHNCguy> and more :)
[18:18:32] <zeeshan> gnite np!
[18:18:33] <CHNCguy> Oh and archivist :D
[18:18:33] <rob_h> ok night
[18:18:45] <rob_h> if need more info showt
[18:56:07] <archivist> rob_h, a bit of live switching between hal pins I think for the sliding heads, but where they are different is axes starting moves early during another's move
[18:56:59] <archivist> I think humans gcode writing is going to be special on them
[18:57:08] <rob_h> dont think would work.. as need to profile with X Z Y and X2 Z2 also
[18:57:27] <rob_h> its standard Gcode, just got sync codes
[18:58:11] <archivist> well having played with hobbing one can sync axes
[18:58:13] <rob_h> the same how our 4 axis lathe works so can use both turrets at once.. then just wait for top one to finish etc
[18:58:58] <rob_h> i need to use sub spindle slides to pickup parts out main spnidle, then do back work.. while main spindle does front work
[19:00:01] <archivist> I can see a need for independence of front and back motion also
[19:00:08] <rob_h> also have power tooling for front spindle, and indexing
[19:00:47] <archivist> mine has back tooling too, drilling
[19:01:23] <rob_h> i have one slide with a single power holder... then one with 3 holder slots at exspense of less turning tools
[19:02:04] <archivist> but thinking of not using the drilling assembly and making it more like a citizen
[19:02:14] <rob_h> if it came to conversion id prob make spindle C axis also
[19:04:23] <rob_h> the driven guide bush makes it dam noisy machine tho
[19:04:24] <archivist> soon be time to stare at them at mach2014
[19:04:33] <rob_h> lo ye
[19:04:55] <rob_h> and the bar feeds that cost nearly as much as the machine next to them
[19:05:23] <archivist> mine has a single tube feed
[19:05:33] <archivist> human reload
[19:05:37] <rob_h> what this had shown in the manual
[19:05:59] <rob_h> but it came with nothing and i think they had a full auto on it also as multi socket on there and plc is ready for it
[19:07:01] <archivist> when i did some time on a capstan the tube barfeed was noisy
[19:07:23] <rob_h> ye we got rid of our air ones from all the lathes now too
[19:07:39] <rob_h> changed them all to hydrolic, finish is much better also no bar rattle
[19:08:46] <rob_h> just changed our lathes to a new neat oil also now... so more water based there. gone to a easter based oil
[19:10:28] <rob_h> ri late now. so sleep time
[19:10:48] <archivist> at the last job the machines ran on neat oil
[19:11:18] <archivist> bed is the only warm place here
[19:12:06] * Jymmm hands archivist a gallon of gas and box of matches
[19:12:21] <rob_h> no more bed
[19:19:53] <Jymmm> I need to make a fixture to hold multi thin (0.050") parts and be able to flip them over. I'm thinking like three layers, the outter two being 1/8" for rigidity. What I can't figure out is how to "clamp" or fasten them together so the pieces are still at the same height.
[19:20:42] <Jymmm> Max dimension about 24" x 12"
[19:23:05] <Tom_itx> double back tape
[19:23:08] <Tom_itx> superglue
[19:23:12] <Tom_itx> ....
[19:24:21] <Jymmm> The pieces are small, the fixtures are to un/load them into the laser. Then flip over to do the backside.
[19:27:21] <Jymmm> I dont think glue or tap is the right answer.
[19:27:47] <Tom_itx> what is?
[19:28:35] <Jymmm> Robotic feeder system, but I'm not there yet.
[19:28:44] <Jymmm> maybe magnets?
[19:29:18] <Tom_itx> you didn't specify the material
[19:29:25] <Tom_itx> you're cheating
[19:29:58] <Jymmm> I could glue the magnets to whatever
[20:47:13] <someone972> I finally got the jogging on my diy cnc controller working with integer math
[20:48:31] <someone972> Turns out the overstepping problem I had was due to integer truncation when calculating the delay to the next step
[20:48:39] <someone972> Adding 0.5 fixed that right up
[20:55:11] <someone972> So what's the best way to calculate the maximum acceleration?
[20:58:18] <Jymmm> =< speed of light in a vacuum
[20:58:43] <someone972> ha!
[21:15:06] <Jymmm> archivist: It's hella slow to load, but you might like this... http://www.viralnova.com/randall-woodworking/?utm_source=newsletter&utm_medium=email&utm_campaign=aweber
[21:29:25] <owhite> hey people.
[21:30:20] <owhite> could anyone hook me up with documentation for the hal component oneshot? I cant find out if it uses units as seconds or milliseconds.
[21:32:42] <cradek> owhite: man oneshot
[21:33:33] <owhite> cradek: sorry. I should have known.
[21:33:45] <cradek> eh, it was nothing :-)
[21:35:07] <owhite> I promise, I always try to get an answer from the documentation.
[21:47:23] <Tom_itx> then what would we do?
[21:48:30] <Tom_itx> also look at edge
[21:48:37] <Tom_itx> very similar