In my simplistic way I've always thought that homing a gantry by bringing both sides up against a hard stop, manually if necessary, then enable the servos and set zero or maybe reverse the sequence and set zero first. Probably less than ideal but might work.
Has anyone done a gantry that drives with a central motor and mechanical linkage to both sides. I'm thinking more like a solid T not gearing to both sides. Just to put your mind at ease I've not had my coffee yet. Dave On Thu, 2013-05-23 at 17:42 +0100, andy pugh wrote: > On 23 May 2013 17:33, Jon Elson <el...@pico-systems.com> wrote: > > > I had hoped to be able to do this without building > > a gantry machine here just to understand the homing issues. > > Two motors on the bench linked by spaghetti would seem like a usable > surrogate system :-) > > If the spaghetti shaft breaks then more work is needed. (limit > switches simulated by some HAL tracking Rawcounts from the encoders, > which as far as I know never change.) > ------------------------------------------------------------------------------ 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-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
