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[00:33:45] <skunkworks> zlog
[00:33:46] <zlog> skunkworks: Log stored at
http://tom-itx.no-ip.biz:81/~tom-itx/irc/logs/%23linuxcnc-devel/2015-05-28.html
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[00:38:59] <Tom_itx> awfully quiet
[00:41:05] <skunkworks> Too quiet.
[00:44:37] <Tom_itx> that RR post you showed me what was the significance of the numbers on the right?
[00:44:58] <Tom_itx> it looked to me that mach had higher feeds?
[01:02:16] <skunkworks> peak acc/vell
[01:03:15] <skunkworks> cavel
[01:03:21] <skunkworks> heh
[01:04:03] <skunkworks> vel
[01:06:33] <skunkworks> acceleraation calculated from velocity
[01:08:56] <Tom_itx> that's the result from your encoder inputs?
[01:09:45] <Tom_itx> i think they're too busy digging their way outta software upgrades
[01:19:22] <skunkworks> I am pretty sure they are correct as the linuxcnc logging is pretty close - just a little over 30in/s^2 - and you can manually calculate the acc from the slope of the velocity.
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[09:35:12] <tinkerer> parport
[09:36:04] <tinkerer> oups... just noise
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[12:29:23] <skunkworks> https://www.youtube.com/watch?v=QUt-7tHbgC0&feature=youtu.be
[12:29:58] <skunkworks> is it me - or does that not look anywhere near 35000mm/m (1377in/min)
[12:37:50] <pcw_home> 35000 MM/M looks about right ( maybe a second to traverse full range = 20 inches? )
[12:38:20] <archivist> looked "not slow"
[12:38:59] * archivist waits for skunkworks to get one of them to measure it
[12:39:05] <pcw_home> (though the Shapeoko probably bends quite a bit with .4 G accel)
[12:43:11] <skunkworks> ok
[12:43:49] <skunkworks> I was trying to decide if I was awake enough to figure out scale :)
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[12:44:21] <skunkworks> I have an uno - which I think will run it. Just not here at the moment
[12:47:59] <skunkworks> https://groups.google.com/forum/#!topic/machinekit/13CyJvWyN90
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[14:20:29] <ssi> 1377ipm isn't all that fast
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[14:32:06] <mozmck> yeah, only 1.304mph
[14:33:28] <ssi> haha
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[14:59:54] <jthornton> my ink jet is out of ink time to buy a laser printer
[15:00:07] <ssi> yeah
[15:00:15] <ssi> I haven't bought an inkjet in decades
[15:00:31] <ssi> aside from the high end photo printers
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[18:12:59] <skunkworks> grbl is pretty neat for what it is.. It was pretty painless getting the arduino flashed and a gui running (picked a popular java based interface)
[18:20:26] <skunkworks> heh - trajectory planning is hard :)
[18:21:21] <skunkworks> it cornering tollerannce is set to .01mm and it seems to go over it's acceleration limits only by about 2X
[18:21:34] <skunkworks> its
[18:21:55] <skunkworks> if you set it to .1 (.0039") it goes over by 3 times +
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[18:40:00] <skunkworks> default cornering tolerance (what ever that means exactly) .01mm took 10:32
[18:40:07] <skunkworks> http://electronicsam.com/images/KandT/testing/grbl/grblplot.png
[18:40:32] <skunkworks> the arduino was set to 30in/sec^2 and 500ipm
[18:40:55] <skunkworks> some plots of that run
[18:40:56] <skunkworks> http://electronicsam.com/images/KandT/testing/grbl/grblhalscope1.png
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[18:41:45] <skunkworks> http://electronicsam.com/images/KandT/testing/grbl/grblhalscope2.png
[18:41:58] <skunkworks> now with the tolerance set to .1 (.0039")
[18:42:11] <skunkworks> http://electronicsam.com/images/KandT/testing/grbl/grblplothigher.png
[18:42:30] <skunkworks> http://electronicsam.com/images/KandT/testing/grbl/grblhalscopehigher.png
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[19:04:37] <cradek> halscope is awesome
[19:04:49] <cradek> it's extremely neat you can use it in this way
[19:05:05] <skunkworks> isn't it?
[19:05:37] <cradek> I bet that's the first time that stuff has been measured
[19:05:56] <skunkworks> probably... It is probably just therory that it works ok.
[19:06:01] <skunkworks> Theory
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[19:06:27] <skunkworks> it isn't bad - that whole program ran with no hickups other than the violations. It is impressive.
[19:07:19] <skunkworks> I really need to get a decent working running average componant
[19:08:21] <skunkworks> the one I hacked together doesn't work well with zero crossing.
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[19:12:30] <cradek> what if you just sample with a much slower thread?
[19:13:10] <skunkworks> that is how I am doing it now. I am ddt'ing over about 60ms
[19:13:26] <cradek> ah
[19:13:28] <skunkworks> so you get the boxcar acceleration plots.
[19:13:39] <skunkworks> I was hoping for something better
[19:17:17] <skunkworks> zlog
[19:17:17] <zlog> skunkworks: Log stored at
http://tom-itx.no-ip.biz:81/~tom-itx/irc/logs/%23linuxcnc-devel/2015-05-29.html
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[19:20:10] <skunkworks> http://imagebin.ca/v/22PTVKng92NW
[19:20:25] <skunkworks> that is what the rolling average componant did at zero crossing
[19:20:43] <cradek> that looks really familiar
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[19:42:24] <skunkworks> linuxcnc running it
http://electronicsam.com/images/KandT/testing/grbl/linuxcnc1.png
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