On 24 May 2013 17:02, Chris Radek <ch...@timeguy.com> wrote: > I thought it was a pin already. I had always thought (in my "it > shouldn't be too hard..." way) that keying off that would be a way > to make an external component that slaves two motors and fakes all > the home signals etc. It'd be pretty horrible but possible.
I suggested it earlier as a way to check that two slaved axes were acceptably in-synch. One unpleasant scenario in the machine described is the failure of one home-switch, but not the other. I suggested a component that would panic if one axis was still searching more than a few mS after the other had started latching, > To maintain this separately, it'd be great if you want to make a new > branch off v2.5_branch with this change. Buildbot will even build > and package it for you (seb pointed me to "Sorting of..." on > http://buildbot.linuxcnc.org/dev.html when I asked about this) The advantage of this would be that it is a less-experimental branch than master, and so probably OK for Jon to use on a customer machine? > > I still hope to work on joint slaving at fest next month - I have > the test hardware built and with jepler's help (a loaner 7i30 and > 5i20) I should have the hardware to run it. I was planning on also bringing my Mesa harware collection. Which is fairly extensive. > I think that is the > real and permanent answer. It's easy to hook two steppers together > but to get index homing we really need to sort out how it should > work and add it to motion's homing state machine. I don't think you > can easily patch it up outside of motion. I understand that gentrivkins and ja3 works acceptably, but I have no idea if this also includes index-homing. It seems to me that it can only really work if the two indexes are set up in the right place. (or, I suppose, if the encoder components grew a fixed-offset pin) -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ Try New Relic Now & We'll Send You this Cool Shirt New Relic is the only SaaS-based application performance monitoring service that delivers powerful full stack analytics. Optimize and monitor your browser, app, & servers with just a few lines of code. Try New Relic and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_may _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
