Gene; I purchased a tachometer from that bay store, and plotted the effects of the pwmgen input value.
I was very surprised to find the results linear; I wrote up my stuff on my blog - http://cnc-for-model-engineers.blogspot.com It was linear, and when I request a spindle speed, it usually comes out within 5%, many times within less than 1% now that it is calibrated properly. I generally put a 2 second wait into my GCODE, because it takes a bit less than that to max the spindle from full stop. (I'd give you a direct link, etc, but I can't get to the web this week very well. (i.e., it times out) but email works.) JohnS. Stuck in Turks and Cacos, wishing I was in my workshop! ------------------------------------------------------------------------------ The Go Parallel Website, sponsored by Intel - in partnership with Geeknet, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials, tech docs, whitepapers, evaluation guides, and opinion stories. Check out the most recent posts - join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
