Hi all,
I have a lathe project for sale (due to lack of time...). Images here:
https://www.dropbox.com/sh/d5gl0ga35zljsdb/AAD_9FseS-Zx1VLwIkrjuub6a?dl=0
Located in Helsinki Finland. Northern Europe would be preferred especially
for heavy items.
In particular for someone building a linuxcnc-based
Hi all,
I was delighted to see that Kasuyasu Hamada has picked up my old cutsim
work from 2011 and made it into a working 5-axis prototype application. It
now looks like this:
https://youtu.be/aSwDVi8W2XM
and code over here:
https://github.com/KASUYASU/cutsim
It uses a linuxcnc-derived g-code
Here's a summary of my programming projects:
http://www.anderswallin.net/2014/02/opencamlib-and-openvoronoi-toolpath-examples/
no GUI, just python c++ modules, python scripts, and visualization with
VTK. everything is quite experimental...
Anders
On Tue, Oct 21, 2014 at 2:35 PM, linden
This one?
http://www.vitalsystem.com/web/motion/motion_controllers.php
On Fri, Jun 13, 2014 at 10:38 AM, a k pccncmach...@gmail.com wrote:
i remember there was motion board manufacturer MONTEC and i remember it
was for 5 axis per board
are they still in business?
is was similar to mesa
BTW, the splitting is usually done with the octtree approach (which was
mentioned before).
It can still generate a huge amount of data. If you want a block of 10
split down to 1mil (0.001), or 4 orders of magnitude, then you need a
tree-depth of 14. That would be worst case 10^12 leaf nodes,
how the code works to anyone asking even
semi-intelligent questions.
regards,
Anders Wallin
On Mon, Nov 25, 2013 at 12:20 PM, Bertho Stultiens ber...@vagrearg.orgwrote:
http://www.anderswallin.net/tag/cutsim/
Cutsim: Last update ~2years ago. Uses external ngc interpreter and
tooltable
Hi Anders.
This is one link to the LinuxCNC wiki : EtherCAT LinuxCNC
Wikihttp://wiki.linuxcnc.org/cgi-bin/wiki.pl?EtherCatDriver
.
Alex
Thanks for your comments and the link.
Modbus TCP is attractive because it seems to use standard Ethernet NICs as
well as work with standard
Hi all,
I'm thinking about various control data-acquisition systems I want to
build, with different requirements on speed performance.
What's the status of Modbus TCP with linuxcnc right now? I found at least
this wiki page:
http://wiki.linuxcnc.org/cgi-bin/wiki.pl?ModbusToHal
What I imagine
Compare:
http://www.vdwalle.com/Norte/EMC2%20%20Ugliest%20Tool%20Length%20Probe%20Station.htm
with:
http://softsolder.com/2010/04/14/emc2-ugliest-tool-length-probe-station-ever/
On the other paw, link rot being what it is, that's a good way to ensure
they've got the information
Hello,
I recently got a 3D printing head with K type thermocouple off ebay.
With a thermistor, I used a simple 555-timer circuit to convert temperature
into a variable frequency:
http://www.anderswallin.net/2010/11/temperature-control-circuits/
It's very nonlinear and not that precise, but for
This sounds doable as long as there is space on the fpga for a lookup-table
and you can get the commutation tuned correctly (I guess the
tuning/alignment process is already required and works ok for the current
bldc implementation).
Could you somehow verify that the non-optimal behavior or
pushing the servo thread time down to 230us while you sometimes get delays
that cause it to be 430us does not seem right.
the latency test with a 1ms thread usually gives a max jitter of 20us with
well-behaving hardware.
if that works correctly down to 250us you would expect variation within
230us
On Sun, Jun 16, 2013 at 3:16 PM, Frank Tkalcevic
fr...@franksworkshop.com.au wrote:
I've added my script to the Wiki,
http://wiki.linuxcnc.org/cgi-bin/wiki.pl?LinesToArcs
It will take a gcode file (only tested with Slic3r output) and convert the
many short line segments back to arcs. It can
See also
http://www.linuxcnc.org/docs/html/man/man9/toggle2nist.9.html
And
http://www.anderswallin.net/2010/10/axis-with-pyvcp-pauseresume-button/
Anders
On May 20, 2013 12:40 AM, Kip Shaffer k...@shafferhouse.org wrote:
Just wanted to share a little success story with you all.
This week I
Hi all,
What is the status on small single-board computers like Olinuxino and/or
BeagleBoard/Bone wrt. Xenomai and LinuxCNC/HAL?
In particular I am looking for a solution with:
- Xenomai + HAL for real-time PID loops with 1ms thread
- SPI + GPIO for communication with custom made ADC and DAC
Can you post the G-code for this somewhere? Do you know if the G-code has
strictly continuous direction(tangent) or better yet: continuous curvature
(acceleration)?
Did you try different G64 tolerances? What tolerance does Mach3 use?
Can you log the actual position of the machine and compare
using a CNC router with an extruder as a 3D printer?
If the former, then you may want to look at so-called waterline milling
algorithms used in CAD/CAM to see if you can generate more efficient
toolpaths. Our very own Anders Wallin has opined on the subject
(http://www.anderswallin.net/category
On Mon, Mar 25, 2013 at 2:36 AM, Dave e...@dc9.tzo.com wrote:
Has anyone tried running the latency test on the Intel H61, H77, or Z77
design motherboards using a CPU with the integrated HD graphics?
Intel DH61AG + i3 2120T 2.6 GHz LGA1155
Is the Count value going to zero during those glitches? Could you monitor
ResetCounterValue also during your test?
Could there be some mechanism that causes noise on ResetCounterValue only
when you count down?
--
Everyone
On Sat, Mar 2, 2013 at 10:13 AM, Marius Liebenberg
mar...@mastercut.co.zawrote:
Hi,
I need to do a lot of changes to a customer's system that has 5i23 and
other cards installed. I dont have a similar installation to work on so
my question is, is there a way to run LinuxCnc or just start it up
The servo is a current drive with a +- 10 volt input.
As there is not much load on the drive so a +-0.4 volt will swing the motor
at full speed.
Tuning with no load at all might be hard or impossible. Do you have the
motors attached to the ballscrew/machine?
Full speed at 0.4V command would
After seeing the success of a few other people in getting lcnc running on an
Arm / Beaglebone, I thought I would take a shot at doing the same on the
Olinuxino, with the intent of driving a 3D printer. I found the Olinuxino
attractive because it has 512MB RAM and a 1Ghz processor and 3 I2C
Or is a dual needle display even possible in PyVCP?
The attached patch (for master) adds an optional halpin2 tag that meter
understands. If supplied it will create a second blue needle, and a hal-pin
that controls that needle with the given name.
A test-panel I made for this looks like this:
I'm looking for a page where I can do the initial commissioning. Ie
Press a limit switch and see if it comes up. Turn the servo and see if
the data is updated. All of this needs to happen without setting the
home switches, eStops etc.
I used this kind of test-panel with a 5i20 and the
By popular demand I have updated my temperature PID-control hack from 2010
http://www.anderswallin.net/2012/12/temperature-pid-control-part-deux/
It uses two parallel port pins, one to measure temperature from a
IC555+thermistor sensor, and another to control a PWM-heater.
I used it to control the
Is this an oversight, or just considered as too big for a man page?
hal by itself is not a command you would execute from the terminal.
man hal otoh gives a general description of hal.
so this is roughly OK I would say.
halscope would be an example of a command that doesn't have a man-page
DN2800MT will install XP, Probably Vista, W7 and Linux with graphics
switched
off. Enabling graphics in Linux seems to be hit and miss but basically
there are
no drivers for the Intel GMA 3600 graphics for Linux or XP but XP will
run.
to which Andy responded
I don't understand the
Thanks for that. I haven't been paying attention and wasn't away they
had any big boards running off a 12VDC supply. Doing a bit of
web-crawling just now I came up with the Intel DZ77GA-70K. Is this what
you had in mind? It looks like there's a lot to like about this board. I
just wish it
linear PSUs can be momentarily overloaded quite a bit. That's what I've
heard make them preferable for stepper/servo PSUs. The servo/stepper drive
will contain more or less circuits for voltage and/or current control, so
it's not that important to have a well-regulated DC-rail for the drive.
If
http://www.automationtechnologiesinc.com/products-page/mpgs
Take your pick. I use the MPG3, but it now seems they're carrying a 4
axis and a 6 axis USB based MPG.
presumably the USB driver for this does not run in real-time? (I'd be
careful in trusting the e-stop through USB too much...)
Do
I have tried to use linuxCNC , and the GUI I need should be Qt, i
have tried to manage it myself ,but failed。。。So do u have one for me?
thanks for ur help。
Smithy have EZ-trol which is a QT4 GUI for LinuxCNC. I am not sure if
it is available except with a machine.
I updated my HAL file accordingly:
loadrt hal_parport cfg=0x378 0xec00 in # Added 2012-Jun-18, NCP
some googling suggests that PCIe parallel ports don't have any
standard address, and the address may even change at each bootup, or
it may be software configurable on the PCIe card.
I'm guessing
That is why I think that 5i25 card would do much better - less
rewiring (actually You might get away with no rewiring at all) and
there also is price difference. Plug it straight in pci slot and
attach Your existing lpt cables to it. The only thing to do is sort
out the firmware - most
1 - is there some inherent incompatibility between Linux CNC and torque
mode servos?
2- is there some deeply buried config parameter that needs to be changed?
3- can somebody point us to a strategy specifically oriented to tuning
torque mode servos?
4- any other ideas?
Here are some
Hi Anders,
Do you have the link for the forked currently developed version? Thanks!
Playing with PyCam right now. Seems to come a long ways since I last played
with it.
There's a group of projects on github.
https://github.com/Heeks
They will differ, more or less, from the corresponding
Have you looked at HeeksCAD/CAM?
heeks.net
Hi Ray,
I haven't had time to run my machine in quite sometime, but, HeeksCAD is was
what I used last time I needed to make some simple tool paths.
When I looked at the current state of Heeks yesterday, it seemed like the
author was recommending
[1] http://wiki.linuxcnc.org/cgi-bin/wiki.pl?TrajectoryControl
--
This wiki page has notes on the exact-stop trajectory planner
http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Simple_Tp_Notes
The reasoning and math behind the current G64-blending code in
LinuxCNC is not well documented..
Renishaw website seems to indicate between 100 and 400 W.
The description ytterbium fibre laser would suggest a wavelength
around 1064nm (not the CO2 10um usually used for laser-cutters)
On Wed, Mar 14, 2012 at 12:19 PM, charles green xxzzb...@yahoo.com wrote:
what do you suppose the laser
2012/3/6 Joachim Franek joachim.fra...@pibf.de:
FNB41060 - IGBT SMART PM,600V,10A
10 Euro at Farnell
I think the IRAMS and this FNB41060 definitely 'solve' the H-bridge
part of the circuit. The challenge is to design current-sensing,
EMI-filtering, powersupplies, and optoisolation around the
I have some small demos of what my CAM-libraries can do over here:
https://github.com/aewallin/linuxcnc-scripts
I'd be happy to help create wizards/GUIs for these if someone finds them useful.
In particular there was interest in v-carving of fonts. The problem I
ran into was that truetype-tracer
Attached is my first pass at an IRAMS circuit. It's pretty much a copy
of the IRF datasheet example. The plan is to hook up the digital signals
to an FPGA card, Pluto-P if I can find it, or 5i25 if I sell something
on eBay. The analog signals are an unknown for now. IRF seems to
recommend
As a result of my work with OpenVoronoi (2d voronoi diagram algorithm)
I've experimented with a medial-axis based pocket milling strategy.
These two videos show the latest progress:
http://www.youtube.com/watch?v=_Qr8tZXGXZU
and
http://www.youtube.com/watch?v=lfIU_gv0iB8
There's a problem with
I don't think that belongs in linuxcnc. It sounds like you would like the
cut simulation work that Anders Wallin et al are working on. Check this
out: http://www.anderswallin.net/2010/08/octree-animation/
It'd be cool to have a tool like that in another Axis tab...
Last time I tried
I have only a little experience as a user of cut simulation, but the times
I've used it, it's been integrated with the CAM rather than with the machine
control. It's when you're designing the cuts that cutsim is most useful,
IMO. I wonder if Dan Falck's FreeCAD+OpenCamLib work would be a
Thanks for the heads up. That textual CAM package is very interesting,
even though it neither documents our LinuxCNC dialect nor provides a
more human readable variant of same. We could change our goal to gcode
generation, but that would mean abandoning current goals.
The cam-zone blog has
I see a problem with using gcode generating software languages to
machine complex geometries. In my world all gcode generating software
languages will undercut or gouge the material deemed to be the desired
material to include in the desired part. This happens at random times.
Usually only
I would like to ask, if anyone could provide some recommendations for
US Digital encoders - I chose them, because they seem to be next in
the line in terms of affordability.
I was particularly looking at E7P.
I have Keling KL23BLS_115 Nema 23 servo motors:
I tested V-carving yesterday:
http://www.anderswallin.net/2012/01/v-carving-test/
It seems to work. The order of the paths is not optimized at all, so
the machine does many unnecessary rapid-traverses.
There is now a PPA through which the packages are available:
I've hacked together a few scripts that demonstrate some progress with
my openvoronoi project:
http://www.anderswallin.net/2012/01/emc2-filters/
There is now a PPA through which the packages are available:
https://launchpad.net/~anders-e-e-wallin/+archive/cam
There are some build-problems on
Hi all,
I've hacked together a few scripts that demonstrate some progress with
my openvoronoi project:
http://www.anderswallin.net/2012/01/emc2-filters/
This is all very experimental and most examples will break even with
small changes. The most obvious problem is that openvoronoi prints
Hello gentlemen,
We'd like to control a parallel robot with EMC2 and also with LabVIEW
sometimes. I just wonder if any MESA FPGA card can be used with LabVIEW, or
is there any other card with EMC2 and LabVIEW support? Or some way to
connect EMC2 and LabVIEW (that's unlikely).
I guess that we
I have been given a quote for electrochemical machining of an encoder
for my project.
http://www.photofab.co.uk/index.php/services/chemical-etch-photo-etch/
There is a £95 setup charge, then another £100 for a sheet of parts. I
get 25 of my design (75mm dia) on a sheet, but only need 6 or so.
Does emc2 support jogging backward/forward along with g-code path?
(the path is defined by .ngc file)
AFAIK, No.
Did you have some implementation idea/details for this?
AW
--
All the data continuously generated in
ah, this is bad news. I needed the 3D and CAM functions.
Most, if not all, of the 3D operations in heekscnc call opencamlib.
Opencamlib (https://github.com/aewallin/opencamlib) is a c++ library
with python bindings for axial and radial projection of cylindrical,
spherical, toroidal, and
The codebase moved to github some time ago:
https://github.com/heeks
The google-code page might still have some useful stuff in the wiki:
http://code.google.com/p/heekscad/
There's been some activity around FreeCAD also. It is, like heekscad,
based on OpenCascade, and has python
Hi all,
I want a simulator-build for playing around with emc2 on 64-bit ubuntu 11.10.
Following the instructions on the wiki I do:
$ git clone git://git.linuxcnc.org/git/emc2.git emc2-dev
$ cd emc2-dev
$ cd debian
$ ./configure sim
$ cd ..
$ dpkg-checkbuilddeps
I've installed everything that
) $(LDFLAGS) $(MODBUSLDFLAGS) -o $@ $^
+ $(Q)$(CC) -o $@ $^ $(LDFLAGS) $(MODBUSLDFLAGS)
TARGETS += ../bin/gs2_vfd
ifeq ($(HIDRAW_H_USABLE),yes)
On Sat, Nov 19, 2011 at 8:21 PM, Anders Wallin
anders.e.e.wal...@gmail.com wrote:
Hi all,
I want a simulator-build for playing around with emc2 on 64
On Sat, Nov 19, 2011 at 9:41 PM, Anders Wallin
anders.e.e.wal...@gmail.com wrote:
Don't ask me exactly why, but with these changes I now seem to be able
to build on 64-bit Ubuntu 11.10:
I previously copy/pasted the output of git diff, but that doesn't
create a valid patch (problems with long
did anyone look into this:
http://article.gmane.org/gmane.linux.distributions.emc.devel/4863
?
if AXIS uses gcodemodule.cc for the graphics preview I wouldn't be
surprised if A-axis rotations are wrong.
Ofcourse if everything is fixed and OK with changes to INI/GEOMETRY
then the problem is not
around a line parallel to Z, both as expected.
But movements in A don't show any tool motion. The coordinate in the DRO
changes as expected, but the tool doesn't move in the preview.
The patch that Anders suggested has no effect as far as I could tell.
On Oct 12, 2011, at 07:07 , Anders
Hi all,
While browsing the interwebs I came across this new paper Performance
analysis of cross–coupled controllers for CNC machines based upon
precise real–time contour error measurement
http://www.sciencedirect.com/science/article/pii/S0890695511001659
or
Yes, some of the early(1993-1994) EMC papers from NIST also use the
open-architecture term. A couple are referenced in the wikipedia
article:
http://en.wikipedia.org/wiki/Enhanced_Motion_Controller
A quick google turns up the MDSI page at http://www.mdsi2.com/ which
states In 1993 MDSI
I've been playing with HeeksCAD/HeeksCNC. I'm quite new to machining,
cad/cam etc, so I
can't comment on how it compares to other packages. I run it under Ubuntu. It
works under
windows as well. See http://code.google.com/p/heekscad/
slightly OT, but anyway:
everyone who feels
Phu... I guess I have to learn some OpenGL. And I wanted to look at
OpenCL for tool path generation, single precision floating points would
will most probably be sufficient for tool path generation, I guess.
Did you think about using the GPU to do the calculations for the simulation?
There
Look at what Anders Wallin is doing with opencamlib
http://www.anderswallin.net/
Thanks for the link. Look good: http://code.google.com/p/opencamlib/
Hi all,
There are about three or four parts (objects) that make up a
simulation. Some are sort of ready, some are not.
(a) interpreter (read
Thanks for all the replies. I'll go with convention then; a rotating knob on
the wheel.
Throwing the hat over the fence; I'll post back on this within two months on
where I've got to. (too many projects..)
If you can make an alternative one with a 'hi-fi' look (smooth wheel,
no detents(?)),
I believe there are a few people using the Pico Systems brush PWM servo
amp with
mesa controller boards.
We are using this combination on our mill. I'm not using any special
boot-up HAL code for the servo amp.
When dry-testing the servos on the bench (no load attached), this
boot-up sometimes
http://en.wikipedia.org/wiki/Enhanced_Motion_Controller
It would be best if you do it while logged on into a Wikipedia
account. We need to put up an original page that is at least adequate,
so that it would not be removed.
someone was asking for third-party references. Digging up scientific
Here's our simple solution for the spindle encoder:
http://www.anderswallin.net/wp-content/uploads/2008/06/encoder.jpg
It's a US-digital encoder which is mounted to a U-shaped bracket which
is bolted to the fan-grill on the back of the AC-induction spindle
motor. There was a thread on the end of
I think I should be able to do this with
the parallel port or at most a Mesa card.
Anybody tried this or have advice?
having EMC2 display the machine position in DRO-mode should be
fairly straightforward, and you could write the coordinates to disk
when the user presses a button, or every 1s
The basic question I guess is would EMC be able to provice the same tool
path quality as the (lower end) Siemens or Heidenhain controllers?
You should run EMC in simulator mode, and use halscope or halstreamer
to record all the joint positions to disk. Then you can analyze this
data later for
I'm working on a servo driven router that has a Mesa 5i20 and 7i33 card.
Started with the H2 servo example. I have tuned many velocity mode drives
and ever things states torque is easier I have not found that to be true for
me. I can not find any info on tuning torque mode systems. Nothing is
in the summer of 2006, having bought those cheap Sanyo motors that
surpluscenter was selling then, I thought I had time to complete
something like this. And I did get as far as actually rotating the
motor with control by emc2/mesa5i20 card
It is kinda an inside joke. It started being just a simple h-bridge
using the irf high side drivers. Then I thought I would add cycle by
cycle current limit. figured out after a few failures that I needed
some sort of blanking circuit. Some where along the way an enable was
added. (still
I know I need servos. The only low cost servos I have found so far are
from keling. I'm probably going to go with the KL23-130-60 NEMA 23
sized servos. The link is here
http://www.kelinginc.net/ServoMotors.html . If anyone knows who else
sells low cost servos, I would very much be
Hi all,
I just put together a small emc2 box for my lathe-project:
http://www.anderswallin.net/2010/01/atom330itx-computer-for-emc2-lathe-control/
The performance database here
http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Latency-Test
shows a quite low jitter number of 6000 ns or so.
I was getting
The Atom330 is a dual-core CPU.
interesting, the default Real-Time kernel apparently does not see the
second core at all?
Since when I look at the resource-monitor there is only one graph for cpu load.
So with HyperThreading the Atom330 looks like 4 cores to the OS?
Question: do you need
A laser interferometer is on my todo list. I've acquired all of the
optics on ebay for a total of a few hundred dollars. I've built a power
supply. The major part I'm missing is the counting and interpolating
electronics with a computer interface.
Hi Ken,
the heterodyne interferometers I
Hi all,
I built a simple interferometer for measuring the surface of a hand
ground/polished telescope mirror a while ago.
Yesterday I removed the expanding lens and used a photodiode to
measure the interference fringes. I mounted the back-reflector on a
small motorized stage which has ca 100mm
Happy to see some pic of your's prototype !
I have ever made an prototype interferometer to do measurement
of distance. And I have some difficult to have a good signal on photodiode to
have stable measurement.
one picture and some text is now here.
I am not sure how to wire 74HC148
Can you show how to connect wires 7-20 to 74HC148 and to 11 pins on 7i37
(00in, 01in, 02in. ………10in)
take a close look at the datasheet
http://focus.ti.com/lit/ds/symlink/sn74hc148.pdf
the 74hc148 has three output bits, you wire these to your m5i20. since
it
HAL is very much like wiring real electronic components (data-flow, if
you want a fancy word LabVIEW and simulink uses...). I think the best
representation for our brains to understand and remember these things
is not a text file with components and links but a schematic.
I tried drawing the
Hi all,
I have a mill which runs a mesa 5i20 card and I am now starting a
lathe build/retrofit (more on that later!). Compared to a few years
ago there are now three or four variants of these cards available:
5i20, 5i22-1, 5i22-1.5 and 5i23.
Also, I know there has been some good work on the
On Sat, Aug 8, 2009 at 8:49 PM, Dale Groverdgro...@redcedar.com wrote:
I'm writing up a little article on EMC and would like to include a
graphic image of EMC being used to tune a servo. Does anyone have a
plot (before and after tuning) showing a step response for a servo?
I have some images
I have been reading these about octree-based cutting simulations
http://www.springerlink.com/content/d8m1658322091400/
http://dx.doi.org/10.1016/j.jmatprotec.2007.11.092
http://www.springerlink.com/content/l26352242w782n3h/
(email me directly if anyone wants the pdfs)
However I would be
R/C Servos take a digital pulse input at around 50 (or 100?) Hz.
The width of the pulse determines the position of the servo.
A width of 1.5 ms is the central position, and 1.0 ms is full left (for
example), while 2.0 ms is full right.
if you have digital I/O connected to EMC (parallel port or
there's a new paper out on desktop parallel kinematic machines which
uses EMC2
http://www.springerlink.com/content/j12r46v2v93g5t07/
I have the pdf if anyone is interested.
Anders
--
The NEW KODAK i700 Series
For a model-yacht project, we are making positive plugs in MDF over
which glass/carbon-fiber moulds will be laminated.
Jari has posted two new videos, they're in my blog:
http://www.anderswallin.net/2009/02/milling-mdf/
enjoy,
Anders
Peter blodow wrote:
Hello John,
I can't understand all that chat about Mesa 5xxx and 7xxx etc. without
knowing what these boards are and what they do. I see that Mesa boards and
their names are used widely in EMC. Here in Germany I can't even find the
brand name of Mesa in ebay.
Please
Hello there,
I wonder if there were a way to get that servo schematic of Anders Wallin
in readable form, i.e., in high resolution so the small characters are
recognizeable?
Peter Blodow
http://www.anderswallin.net/wp-content/uploads/2008/09/dc_servo_schematic_2008jan19.pdf
when printed
I'm using a 5i20 with the PWM amps.
there's a schematic of approximately how it all fits together here:
http://www.anderswallin.net/2008/09/servo-setup/
The HAL, ini, and pyVCP files are at the end of this post
http://www.anderswallin.net/2008/04/emc2-test-run/
they may not be the very latest we
Hello Sam, everyone,
I don't have a machine with the right ssh-keys installed right now, so
if this is useful another developer could check this in.
it has been in use on our mill for several months and worked OK.
http://www.youtube.com/jmi80
there might be another better name than
Hi
i should be able to go up to +10V to -10V. Am i right?
is 1.0 output units means i use only 1.0V out of 10V that system can output?
does pic www.conceptmachinery.com/Sh12.jpg looks ok?
This looks better, now your Xoutput is not saturating and the error also
looks trapezoidal. This is a
Xoutput is again saturating at +1. Did you check that the +1 level is
OK, and it shouldn't go to +10 ?
If +1 is the correct limit then you are simply asking for too much speed
during the cruise-phase. Lower MAXVEL until Xouptut stays below +1
during the cruise-phase (maybe at 0.7 - 0.8 or
There are several systems along these lines that already exist:
pico-systems ppmc, mesanet.com's 7i43, and pluto_servo all use the EPP
protocol for this purpose, and each one has established its own protocol
details.
Isn't the parallel-port going the way of the Do-Do pretty soon?
I remember
I assume you mean the trajectory control: how to output points in
space _and_ time. Interpolating lines and circles in 3d space only is
trivial.
EMC2:s trajectory controller is not very well documented, especially
the interesting bits where G64 blending is done.
I tried writing something
take a look at motion.spindle-speed-out with halmeter.
it should have both sign and a value equal to what you program with M4Sxxx.
You could then simply scale motion.spindle-speed-out so that your
maximum rpm gets converted to a value of 10, and then wire this HAL
signal to your DAC.
I have
,
encoders, etc. that are compatible (Gecko, Rutex, etc.etc.). The list of
compatible servo-drives etc. would be a very long one - but you may
create a new page on the wiki if you feel this is worth cataloging.
Shouldn't Rutex be in the HCL?
--S
2008/8/31 Anders Wallin [EMAIL PROTECTED
Could anyone else with a jog dial check this behavior out and
see if your system does it, too?
I just wanted to make sure it wasn't a side effect of the
low-pass filter or some other aspect of my PPMC driver/boards.
My MPG + m5i20 setup works the same as yours, i.e. machine continues to
If you
turn the wheel quickly and EMC can only move slowly, it will keep moving
after the wheel stops until it catches up. This is NOT a bug.
I am using position-mode, and I am guessing that Jon is too.
Bug or not, it is surprising behavior to the MPG/EMC2 user (perhaps not
to the EMC2
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