#emc | Logs for 2010-08-07

[12:38:27] <ChanServ> [#emc] "This is the #emc channel - talk related to the Enhanced Machine Controller and general machining. Website: http://www.linuxcnc.org/, wiki at http://wiki.linuxcnc.org/"
[12:38:43] <micges> cool ,thanks
[12:39:12] <skunkworks> thanks also, alex
[12:42:10] <alex_joni> np
[16:52:28] <skunkworks> heh - I just simulated a spindle using stepgen in velocity mode hooked into an encoder block. seems to work quite well.
[16:54:01] <skunkworks> the accelleration set by the stepgen makes it act like mass of the spindle
[16:54:01] <skunkworks> * skunkworks is sure there is an easier way ;)
[16:58:11] <Jymmm> skunkworks: whatcha doin?
[16:58:45] <SWPadnos> skunkworks, limit/limit2/limit3
[16:59:46] <skunkworks> I need to make a shift comp for shifting the Kearneys transmission
[17:00:07] <skunkworks> But I don't want to do it at the machine - so i need something that acts like the spindle
[17:00:42] <Jymmm> cordless drill?
[17:00:52] <skunkworks> virtually.... ;)
[17:01:10] <Jymmm> imaginary cordless drill?
[17:03:05] <Jymmm> you need a virtual shift comp?
[17:04:56] <Jymmm> skunkworks: I'm confused
[17:07:13] <skunkworks> to write the comp - I need something that 'acts' like the spindle so I can see if it is working correctly.
[17:07:55] <pcw_home> what SWPadnos said...
[17:08:48] <SWPadnos> yah, what I said
[17:09:24] <skunkworks> right - I think I have it working though - for what I need. stepgen in velocity mode -> encoder. that way I get velocity and counts. (I plan on using counts to see how many rotations the spindle motor has turned - that is all I have for the initial gear shift)
[17:09:47] <SWPadnos> toss in a small value sine (on the input) if you want ti simulate noise/speed oscillation
[17:09:56] <SWPadnos> s/ti/to/
[17:10:08] <skunkworks> pcw_home: did you see this? http://www.electronicsam.com/images/KandT/conversion/servo/x-zservo_mount.jpg
[17:13:27] <pcw_home> Yes, quite a retrofit pulleys dont seem parallel though, cant quite see which motor ls connected to which output shaft
[17:13:42] <SWPadnos> hmmm. actually, the noise should be added to the output
[17:13:53] <SWPadnos> of the limit3
[17:14:45] <pcw_home> (yep or the hf noise would be filtered out)
[17:16:11] <micges> pcw_home: hi
[17:16:28] <pcw_home> Not sure what you would call a slew rate limited filter (its not linear)
[17:16:30] <pcw_home> Hi micges
[17:16:31] <skunkworks> pcw_home: the pullys where not in the correct position in that picture.
[17:16:58] <skunkworks> put pretty close
[17:17:21] <micges> I wonder which of your product can be used as a replace of 5i20 on pci-less motherboard
[17:17:23] <micges> s
[17:17:40] <pcw_home> Does it have PCIE?
[17:18:00] <micges> probably yes
[17:18:26] <micges> but I don't know for sure (money decides)
[17:18:55] <pcw_home> If it has a one lane PCIE conn a 3X20 will do bu its expensive (we will have cheaper PCIE cards later this year)
[17:20:24] <micges> cool
[17:21:08] <pcw_home> The new 510 atoms have a mini-pcie connector If I get off my butt and make a cable adapter (minipcie -->cabled PCIE) those would be nice for cabled PCIE as well
[17:22:27] <pcw_home> skunkworks: I figured as much
[17:30:26] <Fox_M|afk> Fox_M|afk is now known as Fox_Muldr
[17:31:29] <micges> bbl
[17:32:49] <Jymmm> Hey Guys, google docs has a new drawing feature. You can either publish or share and LIVE edit a drawing between multipli people, and save as PNG, JPG, SVG, or PDF
[17:44:58] <IchGuckLive> good evening from Germany
[18:16:24] <Fox_Muldr> Fox_Muldr is now known as Fox_M|afk
[19:54:33] <Jymmm> In respect to HVAC and duct work.... You have a floor register which is the pretty grill ting you cover the duct work that's roughly 4"x10", what's the thing called that it connects to?
[19:54:45] <Jymmm> s/ting/thing/
[19:55:33] <Jymmm> One end is a 4x10 opening, the other end is 6 or 8" round
[19:58:17] <Jymmm> Hmmm, looks like it's called a "Stack Boot"
[20:58:06] <skunkworks> defuser?
[21:00:08] <boot|sleep> boot|sleep is now known as bootnecklad`
[21:19:57] <pcw_home> Isn't that whats used to melt the onto laser prints :-)
[21:20:14] <pcw_home> (melt the toner)
[21:23:57] <Jymmm> pcw_home: that would be "fuser"
[21:24:24] <Jymmm> This is what I was talking about http://www.homedepot.com/Building-Materials-Heating-Venting-Cooling-HVAC-Parts-Accessories/h_d1/N-5yc1vZ1xglZapt7/R-100209803/h_d2/ProductDisplay?langId=-1&storeId=10051&catalogId=10053
[21:24:36] <Jymmm> I think
[22:03:05] <skunkworks> comps are cool!
[22:03:37] <skunkworks> I think I have the initialization sequence working for the transmission
[22:08:36] <tom3p> micges: http://imagebin.ca/view/f3iABp.html ysn2axB8.html cTFV0Rg.html h6CIUu.html em0_8yOu.html dEajouE.html cA5o4-a0.html xQepsVpz.html gCJ0yob.html
[22:59:26] <andypugh> With a 110mm diameter x 100mm long iron casting, I wonder if having a core for the middle will actually cost a lot more than just making it solid and boring it out.
[23:44:12] <cradek> andypugh: your video is cool.
[23:46:08] <andypugh> The eccentric turning one?
[23:46:14] <cradek> yep
[23:46:44] <andypugh> it turned out well
[23:59:45] <WalterN> MattyMatt: poke