Back
[00:00:18] <cradek> skunkworks: from the nml interface, you can issue an incremental jog of whatever length you need
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[00:05:01] <cradek> oh hey
[00:05:03] <cradek> 12 float IN 0 halui.jog.1.increment
[00:05:03] <cradek> 12 bit IN FALSE halui.jog.1.increment-minus
[00:05:03] <cradek> 12 bit IN FALSE halui.jog.1.increment-plus
[00:05:09] <cradek> you can just do it with halui
[00:07:36] <andypugh> That would be vaguely wacky
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[00:08:17] <andypugh> I can’t help feeling that if you are in a Python module then the Python interface makes more sense than NML or Halui
[00:08:27] <cradek> sure you're right
[00:08:35] <cradek> then you can send an mdi command directly
[00:08:51] <andypugh> mdi or raw emcconon
[00:08:57] <andypugh> (emccanon)
[00:11:01] <ssi> emoticon?
[00:11:05] <ssi> :D
[00:14:19] <andypugh> cradek: I think you can use emccanon.STRAIGHT_TRAVERSE(line,x0,y0,z0,0,0,0,0,0,0) in Python, but there are few examples. I think that is one of the very many things that mah added.
[00:16:08] <cradek> if so, you'd need to know the position of all the axes you don't want to move
[00:16:17] <cradek> an mdi command does that kind of thing automatically
[00:18:16] <andypugh> i suspect that might be covered, it seems likely. Perhaps missing arguments don’t move?
[00:18:28] <andypugh> I have never tried it.
[00:21:31] <andypugh> <points at the main channel, where there is a driver/kernel question>
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[03:44:52] <KGB-linuxcnc> 03Chris Morley 05stepconf-simulated-configs d7d16c8 06linuxcnc 03src/hal/components/parport.comp 03src/hal/components/sim_axis_hardware.comp components -add (sim) parport and sim_axis_hardware components * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=d7d16c8
[03:44:52] <KGB-linuxcnc> 03Chris Morley 05stepconf-simulated-configs e5ecfbe 06linuxcnc 10src/emc/usr_intf/stepconf/build_HAL.py 10src/emc/usr_intf/stepconf/pages.py 10src/emc/usr_intf/stepconf/start.glade 10src/emc/usr_intf/stepconf/stepconf.py stepconf -use new components to make a simulated config. * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=e5ecfbe
[03:49:40] <cmorley> ^^^ this branch adds ability of stepconf to make simulated hardware (sim limit and sim home, sim spindle encoder, no parport) configs.
[03:49:47] <cmorley> Opinons?
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[03:51:28] <memleak> i dont see why not :)
[03:52:01] <memleak> i like it, that way you dont need a parport or similiar to make / test configs
[04:03:06] <cmorley> yes. and can make arbitrary sized/optioned sim configs very quickly.
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[14:08:02] <jepler> pcw_home: spun some motors with u3 + 7i90spi last night. no new problems cropped up.
[14:08:05] <jepler> (servos)
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[14:10:22] <pcw_home> Thats good news.
[14:10:23] <pcw_home> I plan to add DPLL encoder sample re-timing next which will improve servo jitter tolerance
[14:14:07] <pcw_home> (absolute encoders already have this feature since they require a pre-trigger to start the serial read cycle)
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[14:46:44] <jepler> these little motors are funny
[14:47:21] <jepler> <200mA @ 30V
[14:47:25] <jepler> not much velocity or acceleration
[14:49:53] <pcw_home> thats pretty tiny
[14:50:10] <jepler> I'm sure their peak is higher, I haven't tried to stall them
[14:51:16] <jepler> tuned to 500u (20 counts) by this amateur
[14:51:57] <pcw_home> bare Hbridge drive?
[14:52:02] <jepler> your 7iwhatever
[14:52:19] <jepler> the one with 4 amps & encoders
[14:52:36] <pcw_home> 7I30
[14:53:17] <pcw_home> Small motors especially bare may be hard to tune at 1 KHz
[14:53:29] <jepler> they're not bare actually
[14:53:44] <jepler> years ago cradek made this little gantry homing test device
[14:53:52] <pcw_home> Ahh
[14:54:03] <jepler> I dunno if it was there the year you visited us in wichita
[14:54:19] <jepler> a couple of little nylon (?) blocks on leadscrews
[14:54:31] <pcw_home> I think it may have been
[14:54:49] <pcw_home> bbl dog walking time
[14:54:52] <jepler> see ya
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[20:44:09] <jepler> we were surprised by the low max velocity and low holding torque of these motors with the 7i30. eventually jmk soldered an inductor in series with the motor. the peak current doubled and the velocity went up over 4x
[20:44:43] <jepler> I dunno if he's going to do that to the other motor, or just declare the mystery of low performance solved
[20:57:00] <skunkworks> wow
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[21:10:24] <jepler> I think the estimated motor inductance was 15mH, so the current limit is reached very quickly, and even in slow decay mode the current decayed really rapidly, so you only got a fraction of the average current
[21:10:30] <jepler> if jmk were here he'd explain it accurately
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[21:16:34] <skunkworks> I think you channelled jmk very nicely..
[21:17:00] <skunkworks> minus the maths...
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[22:25:40] <jepler> seb, cradek: terrible implementation of single-step
http://paste.debian.net/plain/127523
[22:27:10] <jepler> seb_kuzminsky: ^^
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[22:33:18] <seb_kuzminsky> ossom, thanks
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[22:51:42] <jepler> be warned, it fails all the runtests because it always fails at shutdown
[22:52:02] <jepler> the way I created a component to own thread pins/parameters is too tricky, I guess
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