#linuxcnc | Logs for 2013-08-27

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[00:35:38] <nspiel> how can i read about what the core hal components of the default 7i43 setup are in order to integrate them in the default scara config
[00:36:18] <Tom_itx> dmesg will show you the components loaded from the bit files
[00:36:52] <Tom_itx> there is a chart somewhere iirc though
[00:39:37] <Tom_itx> the firmware configurations are in the integrators manual
[00:40:47] <Tom_itx> http://linuxcnc.org/docs/EMC2_Integrator_Manual.pdf
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[00:45:45] <Tom_itx> section 6.11
[00:45:52] <Tom_itx> section 16.11
[00:52:06] <nspiel> thanks tom that was what i was looking for
[00:52:57] <Tom_itx> the actual pins can be found with dmesg once you load the pin file
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[01:01:04] <nspiel> im kind of confused because i have the arm getting encoder feedback now with the default 7i43 small file
[01:01:40] <nspiel> and the scara default config is so different its not as easy as copy and paste to get the fpga configured right
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[01:12:33] <nspiel> tom theres not that much that it says on 16.11 configurations that is of use
[01:14:19] <Tom_itx> those are the 'core' hal components for the bit files
[01:15:15] <Tom_itx> how many pwmgens do you need?
[01:15:22] <Tom_itx> how many encoders do you need?
[01:15:33] <Tom_itx> define them in the ini
[01:15:42] <Tom_itx> find the pins with dmesg
[01:15:58] <nspiel> 4 and 4
[01:16:10] <Tom_itx> what firmware do you have loaded?
[01:16:26] <nspiel> svst4_4
[01:16:50] <Tom_itx> any leftover pins can be configured as GPIO
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[01:17:12] <Tom_itx> so the SVST4_4 has 4 encoders and 4 pwmgens
[01:17:49] <Tom_itx> 18.11
[01:19:01] <nspiel> im also confused because the default scara config and the default 7i43 config are sooooo different
[01:20:04] <Tom_itx> well you said you need 4 encoder and 4 pwmgens
[01:20:14] <Tom_itx> so you have the bit file you need
[01:20:22] <Tom_itx> find out what pins they are on
[01:20:40] <Tom_itx> look at how the pwm is mapped in the scara file and map them to those pins
[01:22:33] <nspiel> it looks like the scara doesnt even have pwm
[01:22:43] <nspiel> thats where i am confused
[01:26:53] <Tom_itx> does it have [AXIS_X] sections?
[01:27:22] <Tom_itx> in the ini
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[01:40:27] <nspiel> for some reason when i start up plug in my 7i43 then open lcnc with the scara default config i type in dmesg and get all the encoder pins and outputs from the 7i43
[01:40:39] <nspiel> but its not configured in the hal or ini yet
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[01:41:50] <Tom_itx> but you have the pinout
[01:41:54] <Tom_itx> that's what you need
[01:42:24] <nspiel> what do u mean
[01:42:29] <Tom_itx> dmesg even tells you what they are
[01:42:50] <Tom_itx> you're not gonna find them in the ini or hal, they're part of the driver you loaded on the first line
[01:43:05] <Tom_itx> but you know what pins they are connected to because of dmesg
[01:43:35] <Tom_itx> PwmGen #0 would be the first axis
[01:43:37] <Tom_itx> etc
[01:44:12] <nspiel> the first line on the hal?
[01:44:14] <nspiel> or the ini?
[01:44:17] <nspiel> the ini right?
[01:44:23] <Tom_itx> and it also tells you what io pin it is wired to
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[01:45:07] <atom1> CONFIG="firmware=hm2/7i43-4/SVST2_4_7I47B.BIT num_encoders=2 num_pwmgens=0 num_stepgens=4"
[01:45:16] <Tom_itx> the one similar to that in your ini file
[01:45:21] <nspiel> yeah i have that
[01:45:33] <Tom_itx> so you know what you have defined right there
[01:45:40] <Tom_itx> dmesg tells you where they are wired
[01:45:44] <Tom_itx> IO pins
[01:45:46] <nspiel> except CONFIG="firmware=hm2/7i43-4/SVST2_4_7I47B.BIT num_encoders=4 num_pwmgens=4 num_stepgens=0"
[01:46:00] <Tom_itx> axis0 is related to the first group
[01:46:01] <Tom_itx> etc
[01:46:38] <Tom_itx> so print out the 7i43 pinout page and label them acording to dmesg
[01:46:48] <Tom_itx> and you know where to wire your axis
[01:46:58] <nspiel> im lost
[01:46:58] <Tom_itx> and encoders
[01:47:28] <atom1> [ 561.339626] hm2/hm2_7i43.0: IO Pin 000 (P4-01): StepGen #0, pin Step (Output)
[01:47:38] <atom1> that's from my dmesg listing
[01:48:29] <atom1> i know from that that my first stepper step io will be on IO 00 Pin P4-01
[01:48:55] <atom1> and the direction pin will be on IO 01 P4-03
[01:49:23] <atom1> they are all listed in dmesg
[01:49:42] <Tom_itx> acording to what you said in the config = line
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[01:50:22] <Tom_itx> so you know your first axis (axis0) will be related to the pins on PWMGEN #0
[01:50:35] <Tom_itx> i can't make it any clearer
[01:51:03] <Tom_itx> yours will be different because i'm using steppers and you're using servos
[01:51:40] <nspiel> but the hal config for scara is nothing remotely close to the one from 7i43 small
[01:51:45] <nspiel> where it makes sense
[01:51:54] <Tom_itx> does it have axis sections?
[01:52:02] <nspiel> no it doesnt...
[01:52:26] <Tom_itx> it must have something related to them somehow
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[02:55:21] <CaptHindsight> archivist: heh, the discussion about the camera system and cross hairs was on the ML
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[03:40:40] <nspiel> is it worth it to read the whole integrators manual to understand building hal files and ini files
[03:41:03] <jdh> it's better than watching teevee
[03:41:35] <nspiel> lol
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[04:20:55] <nspiel_> getting this config for my scara working is impossible. im gaining nothing from reading the integrators manual
[04:26:35] <nspiel_> the literature is so hard to understand
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[05:26:49] <nspielbe> is there a way to figure out the encoder rev/inch empirically from unknown hardware
[05:32:56] <CaptHindsight> rotate the encoder one rev and count the number of pulses
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[05:34:11] <nspielbe> no not pulses per revolution- revolutions per inch- it should be a factor of the motor gearing
[05:36:40] <CaptHindsight> yes
[05:37:23] <nspielbe> but i dont know how the motors are geared
[05:37:33] <CaptHindsight> why is it a mystery? you don't have access to the motor?
[05:37:45] <nspielbe> i do
[05:37:54] <nspielbe> but i dont have a datasheet or anything
[05:38:35] <CaptHindsight> can't you count the number of turns while moving it an inch?
[05:39:04] <kengu> that is what I would do
[05:39:07] <nspielbe> while moving what an inch?
[05:39:16] <CaptHindsight> what is actually moving an inch?
[05:39:31] <nspielbe> yeah sorry
[05:40:09] <CaptHindsight> whats the motor turning? a ball or lead screw? a rack?
[05:41:11] <nspielbe> a robot arm joint
[05:43:07] <CaptHindsight> this for the SCARA?
[05:44:38] <nspielbe> yeah
[05:44:52] <nspielbe> im trying to code the ini but i think its going to be super hard to calibrate the scaling
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[07:12:23] <DJ9DJ> moin
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[07:49:34] <Loetmichel> mornin'
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[08:19:55] <RyanS> I don't get it.. What does the square block achieve? http://www.cnczone.com/forums/mini_lathe/113580-camlock_tail-stock-2.html#post834815
[08:25:07] <archivist> it raises the force to the cam
[08:25:19] <archivist> clamping force
[08:26:59] <RyanS> yeah but wouldn't the piston be sufficient by itself? it's not like the square block is attached to the tail stock
[08:27:53] <archivist> it has compressive force when clamped.
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[08:28:47] <archivist> cam rotates and lifts the piston against the block
[08:28:49] <RyanS> oh, piston goes upward, and block goes down
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[12:44:38] <exco> .
[12:45:10] <exco> I want my pyvcp meter to recognise the axis offset ... how?
[12:46:19] <archivist> define "recognise the axis offset"
[12:47:15] <exco> well my pyvcp meter shows 0 but I set an axis offset because home is at 105°
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[12:47:36] <exco> so HOME_OFFSET = -105
[12:47:42] <exco> but the meter shows 0
[12:48:13] <archivist> touch off to 105
[12:48:15] <exco> which is connected to scale.0.in
[12:48:40] <exco> touch off?
[12:52:02] <archivist> but there is a home_offset in http://www.linuxcnc.org/docs/2.4/html/config_ini_homing.html#r0_1_3
[12:58:13] <exco> yes, but it doesn't show in the meter
[13:00:01] <cpresser> exco: i am not 100% sure i understand your problem. but basically, after homing (eg. home-switch-trigger), the control travels 105 units and then considers this position as zero
[13:00:28] <cpresser> if you dont want that behaviour, dont use an offset
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[13:24:20] <exco> cpresser, no that's all good. I just want my pyvcp meter to show the correct position
[13:24:40] <exco> the cyvcp panel believes home is 0 though i have an offset of 105
[13:26:26] <cpresser> exco: does your pyvcp-meter show a different position than the regular DRO?
[13:26:52] <Jymmm> pcw_home: I picked up the 18650's =)
[13:27:29] <cpresser> if yes, you just neet to select a different pin. ' halui.axis.0.pos-relative' might do
[13:27:44] <exco> thanks, will check, cpresser
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[13:36:47] <exco> cpresser, coarse-pos-cmd?
[13:37:26] <cpresser> exco: that does not sound like the current position
[13:38:00] <exco> that's what the number in the preview window shows
[13:39:36] <cpresser> type 'halcmd show | grep pos' and see which one you want to be displayed :)
[13:40:56] <exco> thanks, coarse-pos-cmd suits me fine (for the moment that is)
[13:42:05] <cpresser> the DRO in the preview window might show another number it you use G54 coordinate systems. depending on what you want the relative position is more usefull
[13:42:21] <cpresser> but that is up to you, i dont know your application
[13:45:01] <exco> thanks, I'll write that down and keep it in mind for later
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[17:02:02] <c60> Any idea why an Axis would intermittently stop jogging with no error message?
[17:03:43] <archivist> sluggish feel to key presses?
[17:04:44] <archivist> keep running after release of a key for a bit?
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[17:06:35] <IchGuckLive> hi all B)
[17:08:25] <c60> no, not sluggish, stops immediately upon release, but sometimes just stops while it's jogging.
[17:08:51] <c60> Seems to only be 1 axis though
[17:08:52] <archivist> accidently press another key?
[17:08:57] <c60> nope,
[17:09:41] <archivist> I have been seeing some jogging oddities on my 5 axis, worse if up for a few days
[17:09:54] <c60> I also have a joypad hooked in for jogging, and it doesn't exibit the same problem when I use it.
[17:10:10] <c60> mine seems to be worse first few hours, then it seems to go away
[17:10:15] <archivist> os version?
[17:10:27] <c60> 10.04 ubuntu, is there any other?
[17:11:05] <archivist> older machines are still on older OSs
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[17:11:58] <IchGuckLive> i got a setup video on youtube for joypad
[17:12:20] <archivist> c60 from what mine is doing I suspect the OS screwing with key presses before axis sees stuff
[17:12:56] <archivist> c60 I also see errors on this non cnc box when the load is high
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[17:13:32] <c60> hmm, I'm confused why it is only on the one axis, the side arrow keys, or numpad 4/6
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[17:14:16] <archivist> probably the axis you use more so you notice it more?
[17:16:01] <c60> not really, it's the longer axis, and it won't move more than a few hundres mm's
[17:17:00] <c60> but it's not consistent, sometimes it moves 600mm sometimes 100mm, sometimes 35,
[17:18:32] <archivist> under high load on 8.04 when typing on irc I see multiple characters when I only type one. which is clearly OS related as there is no cnc on this box
[17:19:06] <Tom_itx> dirty key contact? key bounce?
[17:19:23] <archivist> no its only during high load
[17:19:57] <cradek> > I also have a joypad hooked in for jogging
[17:20:12] <cradek> this is surely your problem. turn on debug and you'll see abort messages.
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[17:22:17] <cradek> if it only happens on X I predict you'll see spurious EMC_AXIS_ABORT ..., +0 coming from your joystick
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[17:23:46] <c60> cradek: where do I turn on debug?
[17:24:19] <cradek> first run from a terminal, not an icon. then machine/set debug level, turn on Task Issue
[17:24:37] <c60> has to be run from terminal?
[17:24:47] <cradek> well if you want to see the output, yes
[17:27:06] <c60> so I have lots of EMC_AXIS_ABORT,
[17:27:28] <cradek> that message is what stops a continuous jog
[17:28:04] <c60> so how can I resolve? I thought having the joypad only activate when a button is pressed would do that,
[17:28:11] <c60> but apparently not.
[17:28:47] <cradek> well I'd unplug the joypad and toss it in the trash or give it to someone who plays video games. then I'd get a jogwheel.
[17:29:06] <cradek> but you might want to futz with the deadband settings etc and try to get it to behave
[17:30:35] <c60> It was more a novelty to get the joypad working, I'd rather just use my iphone.
[17:30:42] <cradek> hahaha
[17:31:27] <cradek> ok I have no idea what your setup is
[17:32:37] <c60> well I was using vlc, not ideal, but worked for dialing in my z's since it's on the other end of the table from the computer terminal
[17:33:10] <cradek> I don't know what vlc is
[17:33:19] <c60> oh, sorry, vnc
[17:33:25] <c60> screen sharing
[17:33:32] <cradek> how big is the mill?
[17:34:03] <cradek> for a very large mill it's nice to have a jogwheel pendant
[17:34:05] <c60> It's a 4x8 CNCRouter parts 80x20 build, 3hp water cooled spindle, just wood and plastics
[17:34:28] <c60> cradek: Oh I agree, just not on top of priority.
[17:34:34] <cradek> ah yeah, that can be hard to reach I bet
[17:34:46] <c60> iphone works fine,
[17:34:47] <cradek> I'd never use wireless to control a machine
[17:35:18] <jdh> wifi Estop!
[17:35:19] <archivist> use real wire TM
[17:35:59] <c60> it's just for dialing in the last few mm for my zero point before hitting go. What's a good jogwheel pendant solution?
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[17:36:48] <cradek> I'd try to find one off a real machine tool. I've not spotted a hobby-market device that I like.
[17:36:56] <jdh> I have a Contour jog-shuttle thing. I'm not sure it qualifies as good, but it is workable.
[17:37:12] <cradek> failing that I'd probably make one using a real wheel
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[17:37:41] <cradek> yeah, like the joypad, I think those kinds of devices are just not suited
[17:38:14] <jdh> I'd say it is much better than the joypad, but not near as good as a real mpg/pendant
[17:38:24] <cradek> they're for offices or rec-rooms
[17:38:46] <jdh> I'd like it better if Axis could update the Increment value based on what the shuttle is doing.
[17:39:03] <cradek> (I can imagine it being better than a joypad though)
[17:41:09] <c60> well, that definitely solved the problem,
[17:41:17] <cradek> yay
[17:41:30] <c60> one other question, where does one set the default jog speed and max velocity ?
[17:42:25] <cradek> http://www.linuxcnc.org/docs/html/config/ini_config.html#_display_section_a_id_sub_display_section_a
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[17:46:20] <c60> Yeah, Thanks,
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[17:48:22] <tjtr33> use a kinect & setup jog sensitive airspace ;)
[17:48:23] <tjtr33> ( like when Trillian threw a pencil through the radio's on/off sensitive airspace in HHG )
[17:49:13] <IchGuckLive> kinect for image control
[17:49:22] <IchGuckLive> show face mill 3D
[17:49:52] <tjtr33> i was kidding
[17:50:03] <IchGuckLive> why not
[17:50:30] <IchGuckLive> the pro versions of the chiese 3D scanners are doing it at Laser glas tubes
[17:51:37] <tjtr33> live control is different from acquiring data points
[17:52:55] <IchGuckLive> its justr a seconds record
[17:53:03] <IchGuckLive> and then a gcode move
[17:53:06] <skunkworks> hgg?
[17:53:57] <tjtr33> hitch hikers guide, where trillian threw a pencil thru the on/off airspace, stopping a news blurb about zaphod
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[17:55:37] <skunkworks> heh - been a log day. I was thinking Hitchhikers Guide to the Galaxy
[17:55:44] <skunkworks> log day?
[17:55:54] <tjtr33> a verilog dar
[17:55:59] <tjtr33> day opps me too
[17:56:11] <tjtr33> bye 4 now
[17:56:15] <skunkworks> things have been going bad exponentially...
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[18:02:54] <syyl-> uah
[18:03:05] <syyl-> friend asked me to shorten carbon arrows for him...
[18:03:50] -!- gpowers [gpowers!~gpowers@71-81-227-116.dhcp.stls.mo.charter.com] has joined #linuxcnc
[18:03:55] <syyl-> rigged up the grinding motor with a cut off disc to the lathe ;)
[18:04:36] <syyl-> https://dl.dropboxusercontent.com/u/24396704/IMG_0073.JPG
[18:05:08] -!- gpowers_ has quit [Ping timeout: 245 seconds]
[18:05:10] <syyl-> maybe time for a real mill/drill spindle for the lathe...
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[18:06:08] <skunkworks> a chain wrench is holding grinder? cool
[18:06:24] <syyl-> light duty chain wrench thing
[18:07:01] <syyl-> its part of a laboratory stand to hold test tubes and stuff like that
[18:07:27] <syyl-> semed about to be the right thing for the job ;)
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[18:13:30] <IchGuckLive> BY
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[20:04:58] <Jymmm> TML: Tact; The art of being able to tell someone to go to Hell in such a way that they look forward to the trip.
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[20:59:19] <DJ9DJ> gn8
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[21:23:00] <Tom_itx> http://tom-itx.dyndns.org:81/~webpage/why/RR_index.php
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[23:26:01] <JT-Shop> lol
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[23:32:43] <JT-Shop> crap "set gap per vehicle specificatin (exception may apply)
[23:32:51] <JT-Shop> specification
[23:33:12] <JT-Shop> can't find crap for my 07 uplander on google except ads for buying spark plugs
[23:33:28] <Tom_itx> what crap did you need?
[23:33:46] <JT-Shop> plug gap for a 2007 Chevy Uplander
[23:34:07] <Tom_itx> electronic ignition?
[23:34:14] <Tom_itx> probably around .035"
[23:34:19] <JT-Shop> all are
[23:34:34] <JT-Shop> these are iridium's
[23:35:00] <JT-Shop> I've seen 60 44 40 and other guesses but nothig that really says what it should be
[23:35:32] <JT-Shop> my guess is 0.060"
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[23:38:28] <Tom_itx> ....they come pre-gapped, although you can check the gap if you are very careful. The iridium electrode is very brittle and not hard to break off.
[23:39:30] <JT-Shop> ah ha I found it in the owners manual it is 0.040"
[23:39:41] <Tom_itx> well i was close
[23:39:51] <Tom_itx> just don't chip the electrode
[23:40:11] <Tom_itx> did you have to get them from the dealer?
[23:40:15] <JT-Shop> I heard that them suckers are $7 each
[23:40:18] <Tom_itx> or does 3rd party sell em
[23:40:22] <JT-Shop> no, acdelco
[23:40:30] <JT-Shop> can get them anywhere
[23:40:46] <Tom_itx> i could likely get em wholesale
[23:40:52] <Tom_itx> used to anyway
[23:41:24] <Tom_itx> a friend worked at an aircraft that rebuilt alot of delco parts
[23:41:35] <JT-Shop> can't wait to change the rear ones :(
[23:41:59] <Tom_itx> makes me wonder what mine has in it
[23:42:58] <JT-Shop> they are good for 100,000 miles but my gas mileage has dropped a few miles to the gallon so time to freshen up things
[23:43:09] <JT-Shop> I have 82,000 so close enough
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[23:50:31] * JT-Shop puts on the chef hat now
[23:55:47] <JT-Shop> I just looked and I have only 270 miles of mountian biking in... I need to up the anti a bit and leave some fat along the trail
[23:59:06] <Tom_itx> don't need plugs for that