The synchronization further down is the hard problem.
> It may be useful to consider what hostmot2 does, before deciding whether
> to do it the same way or differently.
I currently use the hostmot2 Ethernet protocol but for stepper generator it
would make sense with UART if fast enough. USB migh
> It may be useful to consider what hostmot2 does, before deciding whether
> to do it the same way or differently.
I read the source code. Comment claim "stepgen" position controller use
first-order feedforward and proportional error feedback. I expect there will be
jitter in position feedback b
This is all good info,
I do know we have a firewall setup on the router, much more than that,
I'm not sure, and I don't really mess with that aspect of or system, I'm
just responsible for the Linux machines,
As for the actual cnc machines, they are internet connected, but the
operators do not
On 04/04/2016 12:50 PM, Jon Elson wrote:
> On 04/04/2016 09:54 AM, Jeff Epler wrote:
>> I don't think any of the common web or e-mail threats have payloads that
>> work on Linux anyway. But if you have an open ssh port and your root
>> password is "root", you will end up with unwanted software ins
I would say that the first critical thing to determine and accomplish is
the lowest jitter data transfers as possible via Ethernet. Since you are
using one of the STM32 processors I would thing that DMA would be the best
method to process the packet data.
What stack are you planning to use?
On T
On Tuesday 05 April 2016 03:05:00 Nicklas Karlsson wrote:
> The synchronization further down is the hard problem.
>
> > It may be useful to consider what hostmot2 does, before deciding
> > whether to do it the same way or differently.
>
> I currently use the hostmot2 Ethernet protocol but for step
I am using LWIP stack. currently I can turn stepper motor from Linuxcnc but I
need to finnish of the small details.
In the long run I will aim for something that work with one full period of
jitter, dead line equal to period. To send stepper position and let micro
controller interpolate in betw
> My present setup (determined by the try & cry & cuss method) on the mill,
> using a 5i25 interface, does have PID's for each axis, and of note the P
> setting hasn't been set above 1000 because it seemed non-critical, but
> in my case it should be 2000 since the current servo period is .5
> m
On 04/05/2016 06:47 AM, Mark wrote:
> On 04/04/2016 12:50 PM, Jon Elson wrote:
>>
>> At least Ubuntu is set up so that root cannot login from the
>> net. Only user accounts can log in via the net, then you can
>> use su or sudo to get the required privilege.
>>
>> Jon
> If you really, really, reall
On 04/05/2016 11:20 AM, Jon Elson wrote:
> On 04/05/2016 06:47 AM, Mark wrote:
>> On 04/04/2016 12:50 PM, Jon Elson wrote:
>>> At least Ubuntu is set up so that root cannot login from the
>>> net. Only user accounts can log in via the net, then you can
>>> use su or sudo to get the required privile
On Mon, 2016-04-04 at 14:00 -0400, Tom Easterday wrote:
> Always good to have a local backup as well, but offsite backup is essential
> if you really care about the data. With CrashPlan there is an option, I
> believe, where they hold the key as well and can therefore decrypt data if
> you happ
> On Apr 5, 2016, at 11:52 AM, Valerio Bellizzomi wrote:
>
> On Mon, 2016-04-04 at 14:00 -0400, Tom Easterday wrote:
>> Always good to have a local backup as well, but offsite backup is essential
>> if you really care about the data. With CrashPlan there is an option, I
>> believe, where they
On Tue, 2016-04-05 at 12:09 -0400, tom-...@bgp.nu wrote:
> > On Apr 5, 2016, at 11:52 AM, Valerio Bellizzomi wrote:
> >
> > On Mon, 2016-04-04 at 14:00 -0400, Tom Easterday wrote:
> >> Always good to have a local backup as well, but offsite backup is
> >> essential if you really care about the d
On Tue, 5 Apr 2016 12:09:14 -0400
tom-...@bgp.nu wrote:
>
> > On Apr 5, 2016, at 11:52 AM, Valerio Bellizzomi wrote:
> >
> > On Mon, 2016-04-04 at 14:00 -0400, Tom Easterday wrote:
> >> Always good to have a local backup as well, but offsite backup is
> >> essential if you really care about th
I have two Windows XP PCs that are on 24x7 and live behind a
firewall/router that has NAT.
I run Avast Antivirus on both of them.
I get a minor infection on each machine about once per year but between
Avast and Malwarebytes that is quickly fixed.
By far most of the infected items I get are via e
Greetings all;
Background: Del Dimension 745 using our wheezy iso install, with a 5i25
card, driving 3 axis's of steppers, one of the Pico PWM-Servo amps
running the 1 hp pm-dc OEM spindle.
Having a few to play after getting back from din-din, I went thru the ini
file and raised the Pgain of t
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