On Thu, May 10, 2012 at 1:36 PM, Kent A. Reed <kentallanr...@gmail.com>wrote:

>
> 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 horrible latency problems I thought the
days of pc-based control may have been coming to an end.  Fortunately,
latency bothers all users, not just real-time users, and they have reduced
latency problems.  Although the SMI seems to be still an issue, which seems
crazy to me.

I have a little trouble understanding why Arduino is such a popular
platform for gcode interpreters and motion control.  They are expensive,
inflexible and only suitable for step/dir systems.  You still need a pc.
At least the ARM boards have the potential for replacing the PC, but a
Beagleboard is more expensive than a much more capable Atom.  We are using
Beagleboards for our autonomous robots, that is a really good place for
them.
Eric Keller
Boalsburg, PA
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