[Emc-users] Potential cause of spindle speed wibbles?

2012-05-10 Thread gene heskett
I just has a thought (those are getting rarer) about some motherboards having a spread spectrum clocking ability to get them past the fcc's noise limits. Since I believe all this stuff really needs a steady heartbeat, should I be checking the bios to see if perchance such a feature is

Re: [Emc-users] Why LinuxCNC website is compromised by Google ?

2012-05-10 Thread Lester Caine
br...@majorsci.com wrote: Have somebody known why LinuxCNC website is always compromised on Google search? You can find the attachment about this issue. Do you really need to ask when you LOOK at what you posted? There WAS a problem which now has far more to do with GOOGLE

Re: [Emc-users] Why LinuxCNC website is compromised by Google ?

2012-05-10 Thread Peter Homann
And I was thinking that LinuxCNC was deemed to be a virus. :) Cheers, Peter On 10/05/2012 5:53 PM, Lester Caine wrote: br...@majorsci.com wrote: Have somebody known why LinuxCNC website is always compromised on Google search? You can find the attachment about this issue.

Re: [Emc-users] Why LinuxCNC website is compromised by Google ?

2012-05-10 Thread Lester Caine
Dave Caroline wrote: Lester, er the real problem is repeated infestations, that is not googles fault But the 'primary listing' that google creates should at least contain live information rather than cached stuff. What is even more irritating is that they have flagged compromised pages so

Re: [Emc-users] Why LinuxCNC website is compromised by Google ?

2012-05-10 Thread Dave Caroline
Google will have a fast update rate for fast changing sites and their pages but uses cache for speed and slow changing pages, again that is right for google, it is for the sites to maintain themselves and stop infestations. The particular type of infestation that we get gives a different view of

Re: [Emc-users] Why LinuxCNC website is compromised by Google ?

2012-05-10 Thread andy pugh
On 10 May 2012 09:44, Lester Caine les...@lsces.co.uk wrote: Perhaps I've been lucky, but I've never seen the download page 'compromised' That is because the site was compromised in such a way that it served different content to Googlebot than to consumer web browsers. What completely baffles

Re: [Emc-users] AC Servo Motor

2012-05-10 Thread andy pugh
On 10 May 2012 05:37, Mark Cason farmerboy1...@yahoo.com wrote: http://www.flickr.com/photos/46689581@N03/7168795700/in/set-72157629660267772/ Doesn't look like a Hall sensor, quite possibly a magnetic quadrature sensor, but maybe just a tachometer.

Re: [Emc-users] Why LinuxCNC website is compromised by Google ?

2012-05-10 Thread Viesturs Lācis
2012/5/10 andy pugh bodge...@gmail.com: What completely baffles me is _why_. If only Googlebot sees the spam, what was the hacker trying to achieve? Just to give a start to some conspiration theories (the following is just my imagination): Somebody (for example, authors of other cnc

Re: [Emc-users] Raspberry pi integration?

2012-05-10 Thread Bill Hill
On 10 May 2012, at 03:21, Jack Coats wrote: On Wed, May 9, 2012 at 8:51 PM, Scott Hasse scott.ha...@gmail.com wrote: I presume many of you have seen the hype on the Raspberry Pi. Am I correct in thinking that getting LinuxCNC to run on one of those would require an arm-specific RTAI and

Re: [Emc-users] First cut

2012-05-10 Thread charles green
that is a nice solution. i had always imagined two screws coupled with a belt or chain. --- On Wed, 5/9/12, Mike Bennett mjb1...@gmail.com wrote: From: Mike Bennett mjb1...@gmail.com Subject: Re: [Emc-users] First cut To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net

Re: [Emc-users] First cut

2012-05-10 Thread andy pugh
Looking at the bed construction, is the idea to use it with a vacuum hold-down system? -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- Live Security Virtual Conference

Re: [Emc-users] Why LinuxCNC website is compromised by Google ?

2012-05-10 Thread Steve Stallings
The aim of the hackers that compromise the LinuxCNC web site is to use it as a free mule to advertize their junk. The mechanism is to show Google (and not the general public) special links that show up in the Google searches. These links then present the desired junk pages when clicked on in the

Re: [Emc-users] Why LinuxCNC website is compromised by Google ?

2012-05-10 Thread andy pugh
On 10 May 2012 15:10, Steve Stallings steve...@newsguy.com wrote: These links then present the desired junk pages when clicked on in the search results No, the links always go to the correct LinuxCNC page. I have _tried_ to find the spam sites. -- atp The idea that there is no such thing as

Re: [Emc-users] Why LinuxCNC website is compromised by Google ?

2012-05-10 Thread Steve Stallings
Andy, Perhaps I am wrong, but I think the reason that you find the links going to the correct place is that the LinuxCNC web site maintainers have removed the hack, but Google is still showing the old search results. At one time there was definitely spam content on the web site. Steve Stallings

Re: [Emc-users] AC Servo Motor

2012-05-10 Thread Dave
On 5/9/2012 12:28 PM, Eric Keller wrote: On Wed, May 9, 2012 at 11:53 AM, Mark Casonfarmerboy1...@yahoo.com wrote: My Dad stopped by, and gave me the motor yesterday afternoon. This morning, I talked to the guy he got it from, and he said he buys old sewing machines, replaces all

Re: [Emc-users] Raspberry pi integration?

2012-05-10 Thread dave
On Thu, 10 May 2012 00:43:12 -0400 Kent A. Reed kentallanr...@gmail.com wrote: snip Ask Jon Elson for a different opinion as an interested party who is a component vendor and system integrator. As for the ARM-specific real-time Linux that definitely is required, Jon has been waiting for

Re: [Emc-users] Why LinuxCNC website is compromised by Google ?

2012-05-10 Thread Mark Cason
On 05/10/2012 02:53 AM, Lester Caine wrote: br...@majorsci.com wrote: Have somebody known why LinuxCNC website is always compromised on Google search? You can find the attachment about this issue. Do you really need to ask when you LOOK at what you posted? There WAS a

Re: [Emc-users] Raspberry pi integration?

2012-05-10 Thread Kent A. Reed
On 5/10/2012 6:25 AM, Bill Hill wrote: On 10 May 2012, at 03:21, Jack Coats wrote: On Wed, May 9, 2012 at 8:51 PM, Scott Hassescott.ha...@gmail.com wrote: I presume many of you have seen the hype on the Raspberry Pi. Am I correct in thinking that getting LinuxCNC to run on one of those

[Emc-users] pwmgen Q

2012-05-10 Thread gene heskett
Looking for the cause of the apparent wild dither in the encoder output, something that would either have to have been carved into the disk if mechanical, and at the speed wobblies I'm getting, would absolutely have to be visible in the slot spacing I can see, it is that gross! But I can see,

Re: [Emc-users] Raspberry pi integration?

2012-05-10 Thread Kent A. Reed
On 5/10/2012 10:27 AM, dave wrote: On Thu, 10 May 2012 00:43:12 -0400 Kent A. Reedkentallanr...@gmail.com wrote: snip Slightly OT but if one wants a non-intel cpu for motion control take a look at Mesa's SOFTDMC. Implements a configurable accel/decel, jerk limited and very fast servo

Re: [Emc-users] Raspberry pi integration?

2012-05-10 Thread Eric Keller
On Thu, May 10, 2012 at 1:36 PM, Kent A. Reed kentallanr...@gmail.comwrote: I love distributed control but it seems to me the sub-USD100 Intel Atom-based integrated motherboards have sucked the air out of the room. They're good enough and cheap enough. When the P4 came around and had the

Re: [Emc-users] Raspberry pi integration?

2012-05-10 Thread Kent A. Reed
On 5/10/2012 1:50 PM, Eric Keller wrote: We are using Beagleboards for our autonomous robots, that is a really good place for them. Exactly my interest. Microcontroller-based solutions pale in comparison. Regards, Kent

Re: [Emc-users] Raspberry pi integration?

2012-05-10 Thread Jon Elson
Scott Hasse wrote: I presume many of you have seen the hype on the Raspberry Pi. Am I correct in thinking that getting LinuxCNC to run on one of those would require an arm-specific RTAI and drivers for the device-specific I/O? Has anyone else given any thought to this potentially disruptive

Re: [Emc-users] Raspberry pi integration?

2012-05-10 Thread Jon Elson
Kent A. Reed wrote: As for the ARM-specific real-time Linux that definitely is required, Jon has been waiting for several years for RT-Linux to be ported satisfactorily to the BeagleBoard. Slight error, it is RTAI that is not yet available on the Beagle. I believe RT-Preempt may be

Re: [Emc-users] Raspberry pi integration?

2012-05-10 Thread Jon Elson
Eric Keller wrote: At least the ARM boards have the potential for replacing the PC, but a Beagleboard is more expensive than a much more capable Atom. This may not be quite true. The Beagle has integrated memory, and can use very cheap (4G, 8G) SD cards for hard drive. The Atom needs to have

Re: [Emc-users] Raspberry pi integration?

2012-05-10 Thread dave
On Thu, 10 May 2012 13:36:42 -0400 Kent A. Reed kentallanr...@gmail.com wrote: On 5/10/2012 10:27 AM, dave wrote: On Thu, 10 May 2012 00:43:12 -0400 Kent A. Reedkentallanr...@gmail.com wrote: snip Slightly OT but if one wants a non-intel cpu for motion control take a look at