#linuxcnc-devel | Logs for 2012-04-17

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[00:08:14] <jepler> KimK: in the MDI tab, tap M 3 <next> or M 4 <next> to get prompted to enter S.
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[00:18:39] <WillenCMD> anybody help me with a problem, i can't seem to get tklinux to start in sim mode on lubuntu
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[00:19:11] <WillenCMD> i have axis, keystick working
[00:19:23] <andypugh> WillenCMD: I think everyone here is also there..
[00:19:33] <WillenCMD> lol really
[00:19:40] <WillenCMD> damn
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[00:19:51] <andypugh> They might spot it easier here, though.
[00:21:25] <KimK> jepler: Thanks!
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[00:45:12] <andypugh> Hi jepler. Some semi-famous dude is on the other channel talking about comp :-)
[00:47:44] <skunkworks__> semi-famous?
[00:50:04] <andypugh> Well, depending on your background and age, less famous than MattyMatt
[00:50:38] <skunkworks__> ah - I remember that..
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[00:54:55] <skunkworks__> logger[psha]:
[00:56:05] <skunkworks__> andypugh: is he using a different name? or am I dense?
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[13:23:39] <ysli> cradek: hi
[13:24:12] <ysli> I've fixed the s-curve target positioning bug
[13:26:32] <ysli> also, I've modified the blending algorithm for S-Curve
[13:26:51] <ysli> the patch was sent to your mailbox
[13:27:27] <ysli> How could you append 7 git patch files into a single mbox file?
[13:39:00] <JT-Shop> strangely enough the instruction are here http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Translation
[13:41:37] <ysli> JT-Shop: thanks
[13:41:46] <ysli> cat 0*.patch >| shortname.mbox
[13:42:18] <JT-Shop> actually Dewey showed me how and I just copied from him
[13:44:13] <cradek> ysli: man git-format-patch, see --stdout
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[13:49:11] <ysli> thanks
[13:49:55] <cradek> ysli: thanks, it applies, building and testing now
[13:54:16] <cradek> result is better but still not correct: http://timeguy.com/cradek-files/emc/ja3-jerklimit2.png
[13:56:42] <cradek> http://timeguy.com/cradek-files/emc/ja3-jerklimit2-reversals.png
[13:57:49] <cradek> ysli: do you not see these results when you test?
[13:58:16] <ysli> I use different plot tool -- gnuplot
[13:58:42] <cradek> ok I don't know why you'd do that, but you should see the same results
[13:59:16] <ysli> the accel of "ja3-jerklimit2.png" is a little bit odd
[13:59:29] <cradek> yes
[13:59:37] <ysli> I haven't saw that kind of acceleration in my plot
[14:00:14] <ysli> I agree that there are around 5~10 based period mismatch
[14:00:34] <ysli> but the acceleration should not be like that
[14:00:40] <cradek> and there is almost no blending: http://timeguy.com/cradek-files/emc/ja3-jerklimit2-reversal-closeup.png
[14:00:45] <ysli> I will try to find out why
[14:00:55] <cradek> thank you! I hope you find it.
[14:01:38] <ysli> for blending, you need to set "G64 P0.1"
[14:01:58] <ysli> that P<tolerance> is mandatory
[14:02:06] <cradek> then that is a bug, can you fix it?
[14:02:11] <ysli> otherwise it will treat the tolerance as 0
[14:02:26] <ysli> and the result would be no blending
[14:02:51] <cradek> we need to have blending by default, since that is the previous behavior
[14:03:09] <ysli> I agree
[14:03:46] <ysli> I will work on the blending behavior first
[14:04:17] <cradek> http://timeguy.com/cradek-files/emc/ja3-jerklimit2-blending-g64p0.1.png
[14:04:30] <cradek> I get this different but still incorrect behavior with g64 p0.1
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[14:06:11] <cradek> my max accel in the ini is 508, but I get some accels of 967
[14:06:28] <cradek> also jerk would be very high at those points
[14:06:39] <cradek> I have not plotted jerk but I could do that
[14:07:21] <cradek> I have max vel 30.48, acc 508, jerk 20000
[14:07:47] <ysli> that is because you have very large acc
[14:08:15] <ysli> and you had SMLBLND enabled on your tp.c
[14:09:08] <cradek> are you saying I should undefine SMLBLND because it is not working yet?
[14:09:49] <cradek> I don't know anything about the code, I'm just trying to help evaluate the behavior
[14:11:09] <ysli> you should enable the SMLBLND
[14:11:49] <ysli> what's the g-code for ja3-jerklimit2-blending-g64p0.1.png
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[14:12:22] <cradek> ok, I think it is enabled since I have #define SMLBLND
[14:12:27] <cradek> gcode: http://pastebin.com/raw.php?i=Gg4K9MWN
[14:14:20] <ysli> There's must be the bug of SMLBLND
[14:14:27] <ysli> I will look into it
[14:15:34] <ysli> and verify it with your settings before submitting patch
[14:15:56] <ysli> it might take another 3 days :-)
[14:18:13] <cradek> thanks!
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[15:01:21] <alex_joni> micges: check the log .. some exciting more work from ysli
[15:01:59] <micges> thnaks
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