On Tue, 07 Aug 2012 18:12:40 -0400, Kent A. Reed wrote: > On 8/7/2012 7:46 AM, EBo wrote: >> On Tue, 7 Aug 2012 09:29:32 +0200, Joachim Franek wrote: >>> On Monday 06 August 2012 20:26:43 Viesturs Lācis wrote: >>> >>>> I do not have problem of getting 2 or 3 small machines to be >>>> controlled by LinuxCNC. What I need is to synchronize them, so >>>> that >>>> they work all together. >>>> >>> Have a look to >>> http://www.orocos.org/orocos/applications/krypton >> I am not sure I would call two robotic arms having a sword fight >> "cooperating", but that's just me... I'm just say'n... ;-) >> > > True, true. > > I have a more fundamental problem. I've looked at the Orocos work in > another context and there's a lot to like. From the 50,000 foot (or > should I say 15 240m) level, however, it seems to be much like the > RCSLIB. Whichever platform is chosen, however, one still has to > design > the overall system. Whether one could get to a workable prototype > faster > using one or other another is probably more a matter of opinion than > of > fact. > > Thanks to Joachim for mentioning Orocos. I should have and didn't.
My comments might be made mute by the later postings with the Python queue busting, but... it seems that do get the synchronization across different machine platforms -- probably without hard real-time clock synchronization -- we would likely need to have robust master/slave event handlers. I do remember that there was something that would allow waiting until some external trigger was tripped. I do not remember if that was EMC, TurboCNC, or the old Deckle FP3NC I worked on as an apprentice. I'm not to worried at the moment about synchronizing clocks and skew across Linux machines (nee ntpd), but it would be nice if all the clocks could be independent and operations coordinated with single line events. Just thinking ;-) EBo -- ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
