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On 2014-05-16 17:52, Gene Heskett wrote: > On Friday 16 May 2014 11:23:52 Marius Liebenberg did opine > > And Gene did reply: > >> All the devices are situated on or near the bob or the controller >> normally. I2c is not meant for long distance communications but rather >> for closely located bussed devices. Having said that, I2c over >> differential pair is very reliable over large distances. > It must have grown the differential pair capability when I wasn't looking. > The setup I fought with was single ended. You convert to diff pair and back yourself >> If the driver >> software is implimented according to the interface specification it >> will be reliable. >> I am not intending nor will I advocate for it to be used for >> communications but rather for hardware devices that will expand the IO >> capability of Linuxcnc at reasonably low cost. >> Some devices have an interface speed of over 2Mhz. I would say that is >> pretty fast :) > That also is much faster than the specs I looked up at the time. Getting > the cable down to about 38.5 feet made it work, and my thoughts were that > if it was going to be that pickity, I was no longer going to have an > interest in it. > > URL to this new spec? > > Thanks Marius > > Cheers, Gene Heskett -- Regards /Groete Marius D. Liebenberg +27 82 698 3251 +27 12 743 6064 QQ 1767394877 ------------------------------------------------------------------------------ "Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE Instantly run your Selenium tests across 300+ browser/OS combos. Get unparalleled scalability from the best Selenium testing platform available Simple to use. Nothing to install. Get started now for free." http://p.sf.net/sfu/SauceLabs _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
