Very interesting Ralph.
I always wandered if it would be possible to do head position tracking for
robot calibration based on OpenCV. Do you think that this would be possible
using a real time HAL module, written in C, using the a PREEMPT RT PATH
real time based kernel?. If it is possible, I
On 8 October 2014 09:00, Javier Ros j...@unavarra.es wrote:
Do you think that this would be possible
using a real time HAL module, written in C, using the a PREEMPT RT PATH
real time based kernel?
I would be surprised if OpenCV was thread-safe or deterministic enough
to run in a real-time
I do not know about the scheduling for the hal but for ordinary preemptive real
time system with EDF or Rate-Monotonic scheduling a suitable priority is the
way to do it all the way down to GUI or even slower.
Nicklas Karlsson
On Wed, 8 Oct 2014 10:05:04 +0100
andy pugh bodge...@gmail.com
So, would that imply that the OpneCV calling module is doable in RT, at
least if scheduling at a low enough frequency?
Thanks,
Javier
On Wed, Oct 8, 2014 at 11:09 AM, Karlsson Wang
nicklas.karls...@karlssonwang.se wrote:
I do not know about the scheduling for the hal but for ordinary
theirs quite a lot of people using opencv for robotic head tracking ,
although iv'e not used it within linuxcnc context as yet
On 8 October 2014 10:09, Karlsson Wang nicklas.karls...@karlssonwang.se
wrote:
I do not know about the scheduling for the hal but for ordinary preemptive
real time
For scheduling in EDF or Rate-monotonic lower frequency threads get lower
priority so for the scheduling part it should be OK if this is the method used
for scheduling. If round robin is used which I do not call real time operating
system it might however and actually will if execution take to
Hello
I have been reading along on this mailing list for a few weeks now
and playing with Linuxcnc Axis simulator in my free time. Both have been
very informative and I have learned a lot. There are two items I was
wondering if I could get a comment on.
#1 Dose any one have a python script
On Tue, Oct 07, 2014 at 08:23:42PM -0500, Jon Elson wrote:
On 10/07/2014 11:13 AM, Jeff Epler wrote:
I have one of those devices. I'm not satisfied with it.
OK, I'm so spoiled by big iron Tektronix logic analyzers,
I might find it
a problem. But, the pocket size is sure a plus. How
Running OpenCV code in a real time thread would be an entirely different
matter, I suspect. I do not know if the cv2 library would be compatible
with real time requirements, or what level of processing could be accomplished
in a reasonable fraction of a servo period. You would also need to think
On Wednesday 08 October 2014 08:36:06 linden did opine
And Gene did reply:
Hello
I have been reading along on this mailing list for a few weeks now
and playing with Linuxcnc Axis simulator in my free time. Both have
been very informative and I have learned a lot. There are two items I
I don't need realtime. The process in my mind would go like this.
Move camera to target - wait for opencv to acquire target (maybe
averaging over a number acuisitions..) Calculate based on camera
location and target location where the target actually is.
we have some glorified vinyl cutters
On 10/8/2014 8:25 AM, Ralph Stirling wrote:
Running OpenCV code in a real time thread would be an entirely different
matter, I suspect. I do not know if the cv2 library would be compatible
with real time requirements, or what level of processing could be accomplished
in a reasonable fraction
On Wednesday 08 October 2014 09:25:56 Ralph Stirling did opine
And Gene did reply:
Running OpenCV code in a real time thread would be an entirely
different matter, I suspect. I do not know if the cv2 library would
be compatible with real time requirements, or what level of processing
could be
First Q
From Axis
File Properties
Brings up the properties of the currently loaded gcode including
estimated run time
Always underestimates as it takes no account of time used in
acceleration and deceleration to/from the required Feed speed
regards
On 10/8/14 9:01 AM, Schooner wrote:
First Q
From Axis
File Properties
Brings up the properties of the currently loaded gcode including
estimated run time
Always underestimates as it takes no account of time used in
acceleration and deceleration to/from the required Feed speed
Yep,
On Wednesday 08 October 2014 10:44:58 Sebastian Kuzminsky did opine
And Gene did reply:
On 10/8/14 9:01 AM, Schooner wrote:
First Q
From Axis
File Properties
Brings up the properties of the currently loaded gcode including
estimated run time
Always underestimates as it
On 10/08/2014 07:57 AM, Jeff Epler wrote:
On Tue, Oct 07, 2014 at 08:23:42PM -0500, Jon Elson wrote:
On 10/07/2014 11:13 AM, Jeff Epler wrote:
I have one of those devices. I'm not satisfied with it.
OK, I'm so spoiled by big iron Tektronix logic analyzers,
I might find it
a problem. But,
I own an EPROM/PAL programmer that runs off the parallel port. At the time
to get the PAL feature I paid a significant amount for it. The shift from
Windows 3.11 to Win95 orphaned the product two months after I bought it. I
kept a WIN3.11 system around for a few years but doesn't matter anymore
It gets more complicated, though. We have a lab full of Tek logic analyzers
(about 10yo if I recall). They had a retail value of about $11K each I think,
although we got a discount. We discovered after we bought them that they
ran on Windows 2000. Last year we persuaded Tek to give us the
Yeah. The replacement scope for my GOULD was a TEK TDS3032 with floppy
drive. Takes as much as a minute to capture the screen. Getting harder to
read those floppies from Windows Systems. Not really possible to take it
apart and insert a floppy emulation USB drive.
So I bought a TEK MSO3034.
You are totally right. There is no imposed constraint on execution time since
you wait for the image to be acquired and processed before execution continue.
It is exactly as on an ordinary computer where you have to wait for example for
the home page to load before you read it, up to a certain
Unless you get into custom high-speed cameras or sensors, it takes over 15 mS
to capture an image (60 Hz video), plus whatever processing time you incur.
This is a typical real time example. If assumption is made one CPU is used
built into a micro with peripherals or not and same processing is
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I totally agree with you, and that is why an open-source solution like
the Open Bench Logic sniffer is great. There is always someone
(sometimes you) who can fix it.
On 10/8/14 8:12 PM, emc-users-requ...@lists.sourceforge.net wrote:
Message: 1
Date: Wed, 8 Oct 2014 09:06:40 -0700
From: John
On Wednesday 08 October 2014 14:01:10 John Dammeyer did opine
And Gene did reply:
Yeah. The replacement scope for my GOULD was a TEK TDS3032 with floppy
drive. Takes as much as a minute to capture the screen. Getting
harder to read those floppies from Windows Systems. Not really
possible
Greetings
The Manpage of Hostmot2/Encoder defines a pin:
(bit in/out) index-enable
When this pin is set to True, the count (and therefore also position) are
reset to zero on the next Index (Phase-Z) pulse. At the same time,
index-enable is reset to zero to indicate that the pulse has
True. My RS FSH3 with hardware and software modules was close to $15K US
10 years ago and it's only good to 3MHz but is a useful tool. Just no
longer battery operated and if unplugged loses all the setup information.
It's linkage into the PC is through an optical connection to a serial port
on
Sorry. 3GHz. Not MHz.
True. My RS FSH3 with hardware and software modules was close to $15K
US
10 years ago and it's only good to 3MHz but is a useful tool. Just no
longer battery operated and if unplugged loses all the setup information.
It's linkage into the PC is through an optical
Thanks Sebastian Shooner for the comments, and Gene for running my code,
The file properties estimation of run time is exactly what I was
looking for. I intend to use it for path optimization in my code rather
than job estimation. I am comparing code to code. The actual run time I
m not
On Wednesday 08 October 2014 18:21:06 linden did opine
And Gene did reply:
Thanks Sebastian Shooner for the comments, and Gene for running my
code,
The file properties estimation of run time is exactly what I was
looking for. I intend to use it for path optimization in my code rather
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