On Sunday 23 November 2008, 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.
With a parport, it would indeed be nice. My relatively conventional box is on a high shelf, supposedly well above flying swarf even if I'm running an air sweep on the tooling. That knocking sound you all know? Exactly what you think it is. :) However, the 10" screen is a bit small to sit in the present monitors location here. However, at 8 pounds, I could hang it on a hinged bracket on the far side of the swarf shield. Just below the box with the pmdx-106 spindle driver. Interesting to be sure. Maybe they have a similar model with a parport? But there is nothing like that on the site. :( -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Root nameservers are out of sync ------------------------------------------------------------------------- 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
