EMC with USB?

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09 Oct 2009 05:34 #932 by anshuman
EMC with USB? was created by anshuman
Hi,

I am new to EMC. From the documentation, I found out that EMC works with Parallel port. Does it also support USB?


Regards,

Anshuman

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10 Oct 2009 02:03 #933 by BMG
Replied by BMG on topic Re:EMC with USB?
from the Wiki

wiki.linuxcnc.org/cgi-bin/emcinfo.pl?EMC2_Supported_Hardware

Hardware that doesn't work

* USB devices cannot be used to control motors or perform other "real time" tasks. Some USB devices which appear as keyboards, joysticks, and mice can be used for user interface tasks through the hal_input driver.

Hope that answers your question.

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15 Oct 2009 07:18 #979 by anshuman
Replied by anshuman on topic Re:EMC with USB?
Hi BMG,

Thanks for your reply.


Regards,

Sachin

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03 Jan 2010 03:27 #1417 by ItsDrone
Replied by ItsDrone on topic Re:EMC with USB?
Hello all,

I'm rather new to EMC but am willing to go the distance to get what I want/need done.

I have been looking into building a USB connected stepper controller board.

With that being said, I have been looking around the forums to see what I'll need to build my own HAL driver for this process.

I noticed this thread and saw the details about USB and was wondering if there is any specific reason "USB cannot be used to control..." or is it just because no one has developed any HAL for such a setup yet?

Does the USB have timing issues for this sort of realtime setup?



Daniel

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03 Jan 2010 10:57 #1420 by Rick G
Replied by Rick G on topic Re:EMC with USB?
Hello,

You might want to look at smoothstepper.
www.warp9td.com/

Rick

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03 Jan 2010 19:45 #1428 by alex_joni

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04 Jan 2010 01:36 #1431 by ItsDrone
Replied by ItsDrone on topic Re:EMC with USB?
Rick,

Thanks for the feed back but a minor problem:

warp9 would still require external control hardware. My objective is to build a single board per stepper. That way I can customize the firmware via configuration settings in HAL setup.

My future goal is to have a full setup for CNC machines all connected to one system via USB.

Each controller using a unique serial so each configuration selects specific controllers.


Alex,

That would be perfect if RT-USB is already setup but that link goes to a user locked area ( developer.berlios.de/projects/rtusb ).

Even after registering for that site the link goes to no project. Either the project never existed on that site or it has since been removed.


The only result from google turned up "RT-USB 32" that was not GNU/GPL ($1,500 just for windows libraries).

Do you have any details about where to find the current RT-USB project?

Sourceforge.net does not list anything either for rtai/rt-usb

Daniel

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