> On 18 Sep 2019, at 19:34, <[email protected]> <[email protected]> wrote:
>
> Sep 18, 2019, 16:26 by [email protected]:
>
>> Thank you Justin and Bas for quick response.
>>
>> I know about Mesa cards, but it takes too long to have it in my country.
>> Legal procedures etc. or I need to spend a lot for quick cargo and custom
>> taxes.. Besides I have two analog and one digital servo motor and drive thus
>> I need at least two Mesa daughter card and one anything card like the one
>> for pi or pcie etc. Which is very confusing for me. So I am trying to find
>> a solution for that. I am good at python programming and I know that using
>> NML with machinekit is possible to control motors. I already have a pi3b+
>> and a pc :) so I just wanted to know if it's a good idea to spend some time
>> on it or not.
>>
>> I have no idea about pic programming nor electronics so I wanted to do
>> something with what I already have.
>>
>> About step frequency I have tested linuxcnc with parallel port and I have
>> got 1500 mm/min speed rate if just two axis runs at the same time. I do
>> relief machining a lot and when z axis runs with X and y, speed drastically
>> reduce to 600 mm/min. This is because of the latency issues. Not to have
>> latency issues I thought it would be good idea if I seperate the GUI and the
>> step generator.
>>
>> Since forums is here for brainstorming I just got the idea and shared with
>> you to learn if it's a good idea or not.
>>
>> Thank you again for your interest.
>>
>> Berkdan
>>
> Hello,
> I can feel your pain. The distribution part of Mesa business is very bad. It
> is a little bit better that it was but still they could learn a lot from
> Chinese sellers.
>
> However, Raspberry Pi with default GPIO configuration for step-gen is not
> good solution. I have heard some interesting news about the GPIO toggling on
> Raspberry Pi: https://evlproject.org/pipermail/evl/2019-May/000019.html
> <https://evlproject.org/pipermail/evl/2019-May/000019.html> but fo far I
> didn't play with it.
>
> About distributed system, to have proper distinction between RT tasks
> specific hardware and non-RT tasks specific hardware is the way forward, I
> think. It is clutch from LinuxCNC days to have everything on one PC, from
> times when electronics, PCs and whatnots were very expensive. Today, there is
> no need to not have one physical system running the RT kernel and tasks and
> other taking care of the planning and another taking care of UI. Video frame
> buffer will always cause unnecessary latencies on RT systems.
>
> However, Machinetalk in the current form is not going to take us there.
> Unfortunately.
I’ve used remote UI’s with HAL remote components for a few projects, I was
happy using the UI on an Android device, while machinekit ran on a PC with mesa
hardware. What’s wrong with Machinetalk?
>
> If you want Raspberry Pi with something like Mesa FPGA firmware, try the
> BeagleBone Black.
>
> And, if you are up to challenge, you can try to implement simple core on some
> $10 FPGA developer board from Alibaba. The HostMot2 is nice, but it is
> universal and so overcomplicated. Look for example at the Pluto code or
> internet tutorials. Or the LAN9252 + ARM or XMC4800 for Mesa card DYI
> alternatives.
>
> Cern.
>
> --
> website: http://www.machinekit.io blog: http://blog.machinekit.io github:
> https://github.com/machinekit
> ---
> You received this message because you are subscribed to the Google Groups
> "Machinekit" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to [email protected].
> To view this discussion on the web visit
> https://groups.google.com/d/msgid/machinekit/Lp4RDSK--3-1%40tuta.io.
--
website: http://www.machinekit.io blog: http://blog.machinekit.io github:
https://github.com/machinekit
---
You received this message because you are subscribed to the Google Groups
"Machinekit" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To view this discussion on the web visit
https://groups.google.com/d/msgid/machinekit/33BCF627-6E22-4546-9146-C548016DD420%40basdebruijn.com.
