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. > 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 -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS ------------------------------------------------------------------------------ "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
