On Thu, 15 Feb 2007, Jon Elson wrote: _____________________snip__________________________________
>> > I had to go through all the same on my stepper controller. It isn't all > that hard. Especially > because direction reversals are always going to happen at low speeds, so > a 20 us delay > of the first step in the new direction is not likely to make a motor > lose sync. > > Jon Yes, thats usually the case but I have some really crappy Compumotor drivers that require 125 uSec! Especially bad since they are 256 uStep/Step drives... One simple way that might work for decent drives is to punt and only update DIR on the opposite DDS edge from the step edge. > > ------------------------------------------------------------------------- > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share your > opinions on IT & business topics through brief surveys-and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your (")_(") signature to help him gain world domination. ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
