I did that too. I printed a 200mm diameter disk with 72 black white pairs,
read with a P5587 Photoreflector. It currently only reads speed, but I'm about
to replace the sensor to give quadrature output, so I can gear hob, as Andy has
shown.
-Original Message-
From: John Dammeyer [ma
>> If I leave it unconnected
>> I don't have any problems when homing.
>>
>Ahh thats a bug in index handling so I guess you will need to leave
>the PIDs command-deriv unconnected until that is fixed.
>
>I really really wish that index handling did not cause a joint position
jump.
>this is just pl
>I did notice that there didn't seem to be any the scope trace, so I added
the additional debug. That made me think, as you suggested, that my thread
function calls were in the wrong order, but that doesn't seem to be the
case.
That should read - I did notice that there didn't seem to be any erro
I've spent the last couple of weeks upgrading my atom based machine from
Ubuntu 10 (github+openssl incompatibilities), but I've had lots of problems
finding a modern distro that allows me to use the latest software (eg qtvcp)
because of library dependencies.
I tried the LinuxCNC Stretch ISO, but t
ot; that all support Intel 64
<https://en.wikipedia.org/wiki/Intel_64>."
Do you have an older version of the Atom?
-Bari
On 8/19/19 4:44 PM, Frank Tkalcevic wrote:
> I've spent the last couple of weeks upgrading my atom based machine from
> Ubuntu 10 (github+openssl incompatibilities), bu
I have a simple script to run linuxcnc, similar to this...
#!/bin/bash
echo "Starting LinuxCNC" 2>&1 >> ~/linuxcnc.log
linuxcnc myinifile.ini 2>&1 >> ~/linuxcnc.log
echo "Starting LinuxCNC" 2>&1 >> ~/linuxcnc.log
That works fine when I run from the command line.
However, I have my machine set u
Thank you, that got me looking in the right direction.
I modified my UI to return exit codes of 0,1,2 for my script to close
linuxcnc, restart linuxcnc, and shutdown the computer. That messed up the
linuxcnc script so I never saw stdout/stderr or the updated print and debug
files.
-Origin
There are a lot of changes in 2.9, hence the conversion program. There is a
wiki page that describes the differences -
http://linuxcnc.org/docs/devel/html/getting-started/updating-linuxcnc.html
I had to make a few manual changes to get my lathe config to work. From
memory, there is confusion
As others have said - Yes. But it also depends on whether your machine can
maintain that speed given acceleration and max velocity limitations. GCode
with lots of corners or short segments may not reach the requested feed rate
without playing with G61/G64.
-Original Message-
From: Thomas
You can also ignore the expiry warning with switch -o
Acquire::Check-Valid-Until=false
For example
sudo apt-get -o Acquire::Check-Valid-Until=false update
(https://unix.stackexchange.com/questions/2544/how-to-work-around-release-file-expired-problem-on-a-local-mirror)
-Original Message
> https://www.youtube.com/watch?v=Eds48L4cJjM
In those designs, I've always been concerned that the moving part of the
gear rubs against the outside lobes. This repair video shows a Sumitomo
Cyclo which uses rolling pins on the outside, so minimal friction...
https://youtu.be/H_oMVO_OTGs?t=157
gear
mathematically and what cad software do you use?
regards
Andrew
On Wed, Apr 1, 2020 at 8:19 PM Frank Tkalcevic
wrote:
> > https://www.youtube.com/watch?v=Eds48L4cJjM
>
> In those designs, I've always been concerned that the moving part of the
> gear rubs against the ou
ndrew
On Wed, Apr 1, 2020 at 9:55 PM Frank Tkalcevic
wrote:
> I got most of my information from this site...
>
> http://www.zincland.com/hypocycloid/
>
> There's a python script to generate the profiles on that page
> (http://www.zincland.com/hypocycloid/hypocycloid.zip)
I used nylon to print some timing belts. It was a bit tricky - nylon is
hard to print, and shrinks a lot, but they were flexible and very strong.
These were just temporary belts to get the size right and to use until the
real belts were delivered. (for a robot arm where almost every day I changed
> So what I'm asking is, has anyone printed a pulley
> that fits & works with these smaller, finer toothed belts?
I use GT 2mm, 20 and 40 tooth pulleys on my robot arm. Printed on a Prusa
i3 Mk2.5, 0.4mm nozzle, PLA. PLA is fine - other plastics may have
shrinkage problems.
users@lists.sourceforge.net
Subject: Re: [Emc-users] question on tooth size vs 3d pulleys
On Thursday 16 July 2020 18:21:28 Frank Tkalcevic wrote:
> > So what I'm asking is, has anyone printed a pulley
> > that fits & works with these smaller, finer toothed belts?
>
> I use GT 2m
I modified some python code that is in the linuxcnc tree (author.py) and made a
slicer post processing script that takes the generated gcode and converts line
segments back to arcs.
https://github.com/ftkalcevic/3dPrintSmoothing
I'm constantly finding bugs, so verify your first few prints - the
> But is there a support removal tool that isn't radioactive?
Nope. The secret is to design your parts so you don't need support.
Unless you have a dual head extruder, then you can use a different material
as the support material.
___
Emc-users ma
> the middle of a now thicker and nuch denser 6 wall build. cura settings
> are for 6 line walls, 15 ipm and 30 ipm.
6 line walls/perimeters is a large number. My default setting is 2. Less
perimeters also prints a lot faster. If the part is weak, you can always
increase it later, but it s
An off topic question, not directly LinuxCNC related...
How are motors on a serial bus controlled and synchronised?
My only real control experience is with LinuxCNC with Mesa and parallel port
hardware where commands and feedback and precisely timed. Sending commands and
receiving feedback o
> You subject line says RS485/CAN which are dramatically different from the
SPI based synchronous clocked serial interfaces. Even RS485 and CAN are
dramatically different.
Thanks for the replies...
The question was around slower RS485/CAN. I'm seeing a lot of actuators
(motor/gearbox/driver com
I was looking in more detail at the MIT Cheetah and found this page -
https://www.robotdigg.com/product/1667/MIT-Robot-Dog-high-torque-Joint-Motor
-or-DD-Motor
It says that each motor takes an 8 byte payload to drive a motor, and that
motor then replies with a 6 byte packet. After you add the CAN
I use VMWare player on Windows 10 without any issues.
-Original Message-
From: Marius [mailto:mar...@mastercut.co.za]
Sent: Wednesday, 2 September 2020 1:58 AM
To: emc-users@lists.sourceforge.net
Subject: [Emc-users] Best VM to run Linuxcnc in
What would the VM users say that the best fr
> I think that the problem is that you have y2-step in the Joint3
> section, but in the area where you are connecting the parallel port
> pins, both sets of step/dir outputs are netted to the ystep. So they
> move at exactly the same speed and at the same time.
And that is easy to test. When you
> The feature they are taking away is the ability to save your files to an
> industry-standard STEP file. Unless you pay for a license.
That's one that's going to hit me. I always expected the free version to
disappear, so I never invested much time in the CAD. I've been using F360 to
import
I was impressed that FreeCAD could import lots of different CAD formats. I
tried to use the CAM (Path) on an old STEP file, but I couldn't work out how
to orient my part, and set the origin to the bottom-left top corner of the
box stock. Reading the forums, it seems that isn't possible (talk of l
Atmel Studio (the free development IDE for programming Atmel/PIC AVRs
(windows only)) will import an Arduino project. This includes all the
source for all the libraries that are used. This makes it easier to
customise libraries. Programming without an ISP tool is a bit tricky - I
think you need
As long as the environment variables are set up correctly, you should just
be able to run the python app from the command line without "halcmd
loadusr".
-Original Message-
From: ken.stra...@gmail.com [mailto:ken.stra...@gmail.com]
Sent: Wednesday, 16 December 2020 7:54 AM
To: 'Enhanced M
--Original Message-
From: ken.stra...@gmail.com [mailto:ken.stra...@gmail.com]
Sent: Wednesday, 16 December 2020 12:08 PM
To: 'Enhanced Machine Controller (EMC)'
Subject: Re: [Emc-users] Python question
Are the necessary environment variables document somewhere?
-Original Mess
If you look at the axis source code, to increment the spindle you call...
c.spindle(linuxcnc.SPINDLE_INCREASE)
where
c = linuxcnc.command()
linuxcnc.command() comes from halui.cc (I think), which sends a message...
static int sendSpindleIncrease(int spindle)
{
EMC_SPINDLE_INCREASE emc_sp
mats the message to go to the socket?
Thanks
John
> -Original Message-
> From: Frank Tkalcevic [mailto:fr...@franksworkshop.com.au]
> Sent: December-15-20 9:48 PM
> To: 'Enhanced Machine Controller (EMC)'
> Subject: Re: [Emc-users] Python question
>
> If you
Not a website, but the book "Gears and Gear Cutting" from the workshop
practice series shows how to make cutters and cut gears. (I've never tried
it myself)
-Original Message-
From: Gene Heskett [mailto:ghesk...@shentel.net]
Sent: Friday, 18 December 2020 4:38 AM
To: 'Enhanced Machine C
> Since I can't buy a 30mm wrench that doesn't weigh 10+ lbs, and is 15-20"
> long, I am carving out a 30mm ER20 nut wrench from 1/2" alu plate, using
> G5.2/G5.3 to carve out a profiled handle, and its working rather well.
Do we get a photo? And how did you write the gcode? Did you use the ax
I just received an advertising email from SparkFun. They sell the Pi Pico
as well as 3 of their own variants with the RP2040 chip...
Thing Plus - https://www.sparkfun.com/products/17745
MicroMod - https://www.sparkfun.com/products/17720
Pro Micro - https://www.sparkfun.com/products/17717
I just
In the "technical" section it says Efficiency 40% for the 28:1 ratio. Are
harmonic drives that bad, or is that a plastic limitation?
-Original Message-
From: Rene Hopf via Emc-users [mailto:emc-users@lists.sourceforge.net]
Sent: Wednesday, 27 January 2021 8:38 AM
To: Enhanced Machine C
My home made machine connects the enables to the machine enable. I don't
think it was my idea - I think it was based on one of the servo examples.
E-Stop is completely independent - connects to the e-stop switch, and axis
limit switches and kills power to the spindle and servos (originally it cut
The "nozzle fan" is actually a "part fan", used to cool down some plastics,
especially PLA, that have a low (50c) transition temperature. Cooling the
nozzle, and heat block is bad; that's why they make silicone "socks" to
cover the heat block and nozzle.
You may want to try printing without the p
> Not sure if anyone mentioned, spiral hobs will not work unless your hob can
> be tilted to the required angle of the hob cutter. Even for straight teeth,
> it's at least 1.5�.
Wouldn't it be easier in the home workshop to just tilt the rotary table
holding the work piece up 1.5 degrees?
___
> Harmonic and cycloidic reduction drives are to slow
> 6:1 or 10:1 should work.
My first robot arm used 9:1 3d printed cycloidal gear boxed (plus 3:1 motor
to gearbox pulley reduction). Cyclodial ratios can be made small with less
teeth/lobes and larger pins. I'm not sure if that makes them an
There are a lot of "inexpensive" microscopes that are used for PCB repair and
inspection like this one...
https://www.aliexpress.com/item/4000835475910.html
And more expensive auto-focus options...
https://www.aliexpress.com/item/4000835289877.html
There are many combinations of lens and camer
NYC CNC on youtube made their own using some pencil lead as the breakaway
for the Haimer 3d taster...
https://www.youtube.com/watch?v=pJhI98_Y3GI
-Original Message-
From: ken.stra...@gmail.com [mailto:ken.stra...@gmail.com]
Sent: Monday, 15 March 2021 4:42 AM
To: 'Enhanced Machine Contr
I have some small 15mm steppers, similar to this.
https://www.aliexpress.com/item/32872829855.html
I am trying to drive them with an A4988 stepper driver. I can run them at
full step and half step, but anything smaller and they don't move linearly -
one phase appears to step correctly, but
users@lists.sourceforge.net
Subject: Re: [Emc-users] OT: Driving tiny steppers
On Thursday 18 March 2021 18:29:50 andy pugh wrote:
> On Thu, 18 Mar 2021 at 20:52, Frank Tkalcevic
>
> wrote:
> > Is there anything special about driving these motors?
>
> I guess that as they are 2
> That is an enticing thought, but that will require and entrance notch in
> one side if the races
This is an example of not having to put a filling notch in your bearings -
https://youtu.be/3-Jcp8vFAko?t=41
There are not enough balls to reach all the way around, so they can be
easily loaded, bu
What I'm seeing (and I'm not a linuxcnc expert) looks correct. After the
homing sequence it jumps to HOME. This is documented here (0.1.3.7)
http://linuxcnc.org/docs/2.4/html/config_ini_homing.html
-Original Message-
From: Feral Engineer [mailto:theferalengin...@gmail.com]
Sent: Sund
I got one of these...
https://www.aliexpress.com/item/32886510797.html
The side brackets are removable and it has vesa mounting holes on the back.
I use it with a PC - HDMI and USB connection. I use it with touchy.
-Original Message-
From: John Dammeyer [mailto:jo...@autoartisans.com]
e display.
> -----Original Message-
> From: Frank Tkalcevic [mailto:fr...@franksworkshop.com.au]
> Sent: June-01-21 6:47 PM
> To: 'Enhanced Machine Controller (EMC)'
> Subject: Re: [Emc-users] Touch screen for LinuxCNC
>
> I got one of these...
>
> htt
so
> > > for axis maybe for the wizards
> > >
> > > On Wed, Jun 2, 2021, 4:18 PM John Dammeyer
> > wrote:
> > >
> > > > Nicely done!
> > > >
> > > > > -Original Message-
> > > > > From: Frank Tkal
Very nice. What CAM are you using the generate the 5-axis gcode?
-Original Message-
From: Tomaz T. [mailto:tomaz_...@hotmail.com]
Sent: Monday, 21 June 2021 5:33 AM
To: 'Enhanced Machine Controller (EMC)'
Subject: [Emc-users] LinuxCNC in use on 5axis
Recent project done on my DIY 5-axis
I looks like a timing issue. Gladevcp needs pins from hidcomp, but hidcomp
hasn't initialised completely yet. Have you tried the -W (or -Wn) option
with hidcomp?
See the man page for loadusr.
> -Original Message-
> From: Spiderdab [mailto:77...@tiscali.it]
> Sent: Saturday, 7 January
My next atom board will probably be this one...
http://www.mitxpc.com/proddetail.asp?prod=MBNC9KDL2700
or a similar one based on the D2600 (which has been pulled from the site
because they aren't allowed to sell it till 15th Jan). The D2600 board is
1.8GHZ, and is a lower profile so it should fi
=au
Unfortunately, I just noticed it only has HDMI output.
> -Original Message-
> From: Frank Tkalcevic [mailto:fr...@franksworkshop.com.au]
> Sent: Sunday, 8 January 2012 6:26 AM
> To: 'Enhanced Machine Controller (EMC)'
> Subject: RE: [Emc-users] Ideal Atom?
>
>
> It should be fine for EMC in terms of latency numbers, but I am reserved
> about LPT port.
>
> Is there any practical situation to make use of 2 LANs?
Not for me. I just love the mini-itx foot print, and how small we can make
emc machines, with a 5i20 PCI card.
The D945 single core board w
I've just googled for HDMI to VGA converter cables, and they seem cheap and
plentiful.
Is this just a plug in solution? Is the HDMI signal VGA compatible?
> http://webcache.googleusercontent.com/search?q=cache:38ouTBEu2wYJ:w
> ww
> >> .mitxpc
> >>
> .com/proddetail.asp%3Fprod%3DMBNF9C2600%26c
I use a D945GSEJT (single core atom 1.6GHz) in that kind of configuration -
I've disabled X11, so I always boot to a command prompt. I have a KVM if I
need it. Jitter - 6873/6755. When running a desktop it glitches to about
15000.
I still haven't removed all unnecessary daemons. My plan is to
> I use a D945GSEJT (single core atom 1.6GHz) in that kind of configuration
-
> I've disabled X11, so I always boot to a command prompt. I have a KVM if
I
> need it. Jitter - 6873/6755. When running a desktop it glitches to about
> 15000.
Interestingly, if I'm running latency-test then startx,
This whole server/client/remote/x11 discussion has got me perplexed. Maybe
I've missed something, but I've been running my development environment on
headless boxes for years.
I work on a windows 7 box, and use Cygwin/X to connect to the unix boxes.
I run...
ssh -Y -l username hostname
to esta
Do you think the other mob are in danger of being lawyered by a company that
makes razors?
--
Keep Your Developer Skills Current with LearnDevNow!
The most comprehensive online learning library for Microsoft developers
is
Interestingly, if you google "emc opensource", buried among all the
excellent enhanced machine controller articles, there is reference to the
other emc and their foray into open source. Maybe this is how they get
their google search rating up.
> -Original Message-
> From: Stephen Wille P
I've just got a new motherboard with new generation CPU (Jetaway NC9KDL-2700
with Intel Atom D2700). Emc works fine, but because the chipset is new, I
can't get the lm-sensors to detect the hardware. I'd like to monitor CPU
and system temperatures, and control fan speeds.
If I get the latest sen
In AXIS_1 and AXIS_2 section, you have HOME defined twice. Once at 0, the
other at 10.0.
> -Original Message-
> From: Viesturs Lacis [mailto:viesturs.la...@gmail.com]
> Sent: Sunday, 29 January 2012 2:08 AM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] Homing
>
> 201
So which version do you need? I've made my own revision 2 driver.
> -Original Message-
> From: Kirk Wallace [mailto:kwall...@wallacecompany.com]
> Sent: Friday, 3 February 2012 2:51 PM
> To: LinuxCNC Users List
> Subject: [Emc-users] SJ200 VFD and Modbus
>
> I'm trying to get my SJ200 V
> I haven't considered a generic VFD or Modbus device driver, because not
> only do the device functions vary widely, but so do implementations of the
> Modbus standard.
Yes, I found that too. I built my code based on the GS2 module and
Michael's code.
> Early on, I avoided using the GS2 comp
> That sounds like a nice method. I will try to implement that. Setting S to
zero
> to stop material flow is good enough, seems that the dreaded ooze in my
> case starts a few seconds after the extruder is stopped. (Thermal
> expansion?) If I take care to move out of the way before that it seems to
Has anyone successfully run gremlin.py standalone (using gremlin-run) with a
lathe?
When I run it, it is always showing the XY plane, not the ZX plane. I've
tried setting self.current_view = 'y' (assuming this means view down the y
axis), but no matter what I set this to, it is always shows the
> > Has anyone successfully run gremlin.py standalone (using gremlin-run)
> > with a lathe?
> >
> > When I run it, it is always showing the XY plane, not the ZX plane.
> > I've tried setting self.current_view = 'y' (assuming this means view
> > down the y axis), but no matter what I set this to, it
> The factory of the future:
> http://www.youtube.com/embed/nd5WGLWNllA?rel=0
Almost. I still see humans on the assembly line.
--
Virtualization & Cloud Management Using Capacity Planning
Cloud computing makes use of vi
If you are looking for more bug fixes and enhancements to do...
* The colour of the tool on the lathe is very dark and hard to see. I've
tried adjusting the colours in gremlin, but I only managed to make it
darker.
* As an enhancement, moving the font selection string into a function call
so my
I think your program is just doing so too much. Axis will load your gcode,
then simulate the whole file to get the OpenGL preview. If you have lots of
little steps, it is going to take a while.
> -Original Message-
> From: gene heskett [mailto:ghesk...@wdtv.com]
> Sent: Monday, 5 March
Don't forget GWiz
(http://wiki.linuxcnc.org/cgi-bin/wiki.pl?GWiz_-_A_Gcode_Wizard_Framework) -
it needs a screen shot - that page doesn't sell it well.
I've build some lathe wizards, and I've just converted my router (although I
usually use visual mill for cam) It is just waiting for someone to s
I had a problem similar to this, including intermittent faulting, because I
didn't have HOME_FINAL_VEL set. It was moving from the index position, to 0
too fast. I can't remember if it was because I hadn't set the maximums yet,
or if it was the bug in joint mode, where an axis can exceed its maxim
> 2 identical machines, installed from the same cd, one works, one does not.
> The one that works uses display:10, the newer one that doesn't, tries to use
> display:0.
display:10 is normally what I see when I ssh to a remote box. Display:0 is the
local machine's monitor/video card.
>From mem
My gantry still has some spring in it. If I manually cut power, or fault,
the slaved axis move slightly, so when I try to power on again (F1/F2), it
immediately faults. I need to unhome, go back to joint mode and rehome, but
I can't because Axis disables the unhome menu options.
Is there any tec
Thank you. That was a nice easy fix.
> -Original Message-
> From: Sebastian Kuzminsky [mailto:s...@highlab.com]
> Sent: Saturday, 24 March 2012 6:22 AM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] Unhoming when powered off.
>
> On Mar 23, 2
> More exotic ideas might involve two entry boxes and two "submit"
buttons...
How about defaulting to the current position in the text box, and adding a
Zero button that zeros and submits in one click.
--
Live Security V
I was in the market for a mini-ITX motherboard at the beginning of the year.
I wanted that board, but it hadn't been released yet.
I ended up getting a D2700 based one...
http://www.mitxpc.com/proddetail.asp?prod=MBNC9KDL2700
I don't remember the numbers, but the latency was good.
I did have
That ebay ad says "Ball screws are used in aircraft and missiles". What are
you building?
-Original Message-
From: Chris Albertson [mailto:albertson.ch...@gmail.com]
Sent: Wednesday, 28 February 2018 8:34 AM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Chinese "C7" ba
> I paid abut $30 for a very good 16mm diameter by
> 500mm long zero backlash ball screw and nut. Yes truly "zero" there seem
> to be two ball nuts working in opposition. If there is backlash on the
$30
> screw it is less them by dial indicator can show.
Where did you find these? Most ballscr
> "There "universal" is the one to get.
Those pumps are listed as 240v 50Hz - is that dangerous keeping AC submerged
like that?
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users
> - There are two STL to GCODE converter programs in the Windows side of
> things:
>- - Skeinforge
>- - Slic3r
Slic3r runs on linux too.
--
Rapidly troubleshoot problems before they affect your business. Most
> I've been fighting with USB port on my BBB for a few month.
> First, I can't connect separate keyboard and mouse - only combo devices.
> USB hubs won't work (I tried a few). Obviously I can't use USB flash
drives
> either.
Strange, I had all these problems with my Raspberry Pi. It would only wo
Can you do math in a .hal file?
I need to set halui.jog-speed, which is just MAX_VELOCITY in the [TRAJ]
section of the ini file. But MAX_VELOCITY is in machine units (mm/s), and
halui.jog-speed appears to be in program(?) units (mm/min), so I need to
multiple by 60. I really need to do this
The BBB CPU has internal encoder reading hardware, so that is a low CPU use
option.
Also, a USB pendant is generally a pretty low load.
Frank
> -Original Message-
> From: Jon Elson [mailto:el...@pico-systems.com]
> Sent: Monday, 20 January 2014 12:01 PM
> To: Enhanced Machine Controller
Post an enhancement request on the dev mailing list. There are lots of
developers out there that would like to contribute to linuxcnc but don't
because a lot of the required work requires in depth knowledge - ini file
enhancements should be a simple standalone task. Ini file access should be
thro
For the TL;DR bunch, my question - when implementing these, should they have
smarts in them to prevent gouging or overloading the tool? Or is it assumed
that the operator/programmer is smart enough not to try something dangerous?
Detailed question.
I want to implement these as wizards. I see
> I made a bellows out of manila to see if I could do it, and it turned
> out well. Can anyone suggest a material for the final version?
>
> Kirk Wallace
I used thin polypropylene sheet, 0.39mm thick. I got it from
my local art supply store. It needs to be scored for it to
fold properly, but
> > > I made a bellows out of manila to see if I could do it, and it turned
> > > out well. Can anyone suggest a material for the final version?
> > >
> > > Kirk Wallace
> >
> > I used thin polypropylene sheet, 0.39mm thick. I got it from
> ... snip
>
> The milky white appearance of the polypr
Sorry for coming in late on this, but there are actually two Drill Bit
Cities - the other one is Drill Bit City II, at
http://drillcity.stores.yahoo.net/. They have full and half sets of
everything, not just the special items. There's a link on the Drill Bit
City links page to II. I'm not sure w
I've been trying to install EMC2 on Ubuntu 8.04.
I installed 8.04 without any problems. I ran update and all the updates
installed.
I then ran the emc sh install. It appeared to install fine.
When I rebooted and selected the rtai kernel, I get a prompt...
(initramfs)
and the following messag
Ok, I've solved it. In my BIOS I have an option...
Enhanced Mode Support On:
I had it set to "P-ATA+S-ATA". I changed it to S-ATA. It worked. I don't
know why it worked for 8.04 regular kernel and not rtai. I have 2 sata hard
drives, and an IDE DVD.
> I've been trying to install EMC2 on Ubu
I'm about to start converting my lathe to cnc and I am wondering how other
users of the 5i20 + 7i33 have wired it up.
I have some +/-10v servo controllers that I am planning to drive with the
5i20+7i33 combo. My computer is about 3 meters away. I was planning to
house the servos in an electrical
>
> On Mon, 2009-03-09 at 11:25 -0700, Peter C. Wallace wrote:
> ... snip
> >
> > Take a look at the Austria Microsystems chips
> >
> > They have 12 bit magnetic absolute encoder chips less than
> ~$10.00 AFAICR
>
> Dooh, now I remember, I brought this up before and you mentioned this
> encode
> My system has dual boot Ubuntu 8.04 and Windows.
> How can I change the default system at boot time?
>
> Gaston
I have mine set up so it default boots to the last one I selected. This
example is shown in the grub manual
http://www.gnu.org/software/grub/manual/grub.html#savedefault ...
I've just configured my first emc project, a 9x20 lathe conversion. I'm
using a large servo for the spindle - I'm hoping to be able to use it as a
4th axis for some light engraving down the track.
My problem - I've set up the servo for the spindle, but like a servo, it
responds imediately to chan
> On Wed, May 06, 2009 at 04:37:07PM +1000, Frank Tkalcevic wrote:
> > I've just configured my first emc project, a 9x20 lathe
> conversion. I'm
> > using a large servo for the spindle - I'm hoping to be able
> to use it as a
> > 4th axis for some l
> did you test limit2 and limit3, or just limit3? I'm not sure whether
> second-derivative limiting (since command is speed, I guess that makes
> it a jerk limit) is useful for spindle speed, and it would be nice to
> hear real-world results.
Just limit3. I used the basic motion equations s=vt a
My lathe CNC conversion uses a servo motor to drive the spindle. It is
4000ppr, with an index pulse, controlled by a 5i20 and 7i33. It uses a 1:3
pulley ratio. Can I set this up for threading?
I had a quick try, machining a simple test thread, but as I expected, using
a standard setup, I got a
Sorry, a typo. I was using commanded speed. But the timedelay option
sounds more efficient.
> -Original Message-
> From: Jeff Epler [mailto:jep...@unpythonic.net]
> Sent: Friday, 8 May 2009 12:38 AM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] Emc-users Digest, Vo
> > the place. I used lowpass, and got good enough results.
> Is there a
> > component that will smooth out a curve? A moving average?
>
>
> Are you using HostMot2? HostMot2 has a much better velocity
> output than the old M5I20 driver/firmware.
Yes, I'm using HostMot2. The velocity comi
> Hm, the hm2 encoder velocity output is supposed to be really smooth.
> I'll double check it tonight. Any chance you can supply a
> halscope trace of it looking bad on your machine?
I'm using 2.3.
Here's a trace of the commanded velocity (after going through limit3),
encoder velocity (*60) an
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