On Sun, 2008-11-23 at 12:11 -0600, Mark Cason wrote: > On Sun, 2008-11-23 at 16:35 +1100, Erik Christiansen wrote: > > On Sat, Nov 22, 2008 at 07:15:04PM -0800, Kirk Wallace wrote: > > > My two cents. I'd like to see what could be done with just a CPU, RAM, > > > Ethernet and GPIO, doing just the real time stuff. Maybe with four > > > channels of signals for BLDC motors. One problem though is that for a > > > board like this, you can get a whole PC for less money. Too bad cheap > > > wifi routers don't have lots of GPIO. Making 200,000 EMC2 motion boards > > > _would_ bring the unit cost down. > > > > +1 > > > > For some time now, I've been checking each LinuxDevices newsletter for > > potentially suitable new mini-ITX cards. I've been looking for RS485 > > too, because that'd be great for intra-machine communication, if > > satellite microcontollers are ever added, e.g. for a tool changer. (The > > noise immunity of balanced line, and immunity to significant DC offset, > > are both invaluable in the machine environment. It's also more real-time > > than the buffered USB appears to be.) > > > > Fanless would be best, perhaps, so the enclosure could be sealed. > > > > Even if "just the real time stuff" is sufficiently modular to be run on > > an SBC, it would be a lot of work to port e.g. eCos as underlying RTOS. > > (I've only ever done that once, and am glad I was paid for it. ;-) > > > > Still, having a reference "EMC2 RT Platform" would eliminate parport > > and other hardware compatibility worries. In time. But planning is the > > first step. > > > > Erik > > > > How about something like this: > > http://www.linuxdevices.com/news/NS8140322559.html?kc=rss > > Still not perfect, but close. >
Or this: http://linuxdevices.com/news/NS4282988768.html ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
