On Thu, Feb 24, 2011 at 6:44 AM, John Thornton <bjt...@gmail.com> wrote:
> Frank Tkalcevic wrote: > >> The PoKeys55 docs claim that the device implements a standard USB HID > >> keyboard and joystick. Based on that, I'd expect it to just work with > >> hal_input. Is that not the case? > >> > > You are correct. It doesn't use the HID Descriptor reports, so generic > > software can't query the device for its capabilities or message formats. > > Their messaging is specified in their document, but needs to be code > > specifically. > > > > The pokeys makers approached me to add support for it to hidcomp, but > given > > how little spare time I have, it was too much work. > > > What would be involved in getting it to work? > > When I tested it I only tested the analog inputs then lost track of it > for a while. It would be nice if there was a way to interface CNC equipment via USB such that the timing of actions was being scheduled in the controller rather than by the host O/S. That way it would not be necessary to run a specific version of the O/S hacked up to provide real time scheduling. All that would be necessary would be to have the host able to guarantee response within a few seconds. Parallel ports are effectively obsolete these days and finding a motherboard with support is starting to confine selection. So this is effectively meaning I have to use an obsolete machine that I am not sure I could replace in a hurry. Making such an implementation safe would require a little more. There really should be some form of safety switch in the loop and that really should be capable of shutting the machine down dead, cutting power to the stepper motors and the spindle. A safety stop should be hardwired and failsafe. I am just making a box for my xylotec controller and I am seriously thinking about adding a safety stop and routing power to the machine being driven through the box. But in the longer term, I am thinking of maybe programing an ardulino or the like to replace the parallel port i/f. -- Website: http://hallambaker.com/ ------------------------------------------------------------------------------ Free Software Download: Index, Search & Analyze Logs and other IT data in Real-Time with Splunk. Collect, index and harness all the fast moving IT data generated by your applications, servers and devices whether physical, virtual or in the cloud. Deliver compliance at lower cost and gain new business insights. http://p.sf.net/sfu/splunk-dev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
