2012/12/22 andy pugh <bodge...@gmail.com>: > > However that is no help if the hall transitions are just inconsistent.
Please remind me about this machine next time I decide to use chinese motors... This is just crazy: I removed the hall sensor - a small pcb with 3 small black sensors, placed on a circle, concentric to motor shaft approximately 120 degrees each from other. I took a small round metal file and extended the slots, where it is bolted down to motor. I changed the pattern from 25 to 17 (I went through that pattern table and listed all the 12 patterns, how they follow each other) and set bldc value to 0.15. I found a place, where motor was spinning ccw, then I set value to -0.15 to see, if it would spin cw. Initially it did not. With a little adjustment I found a point, where it started to spin cw. The problem is that there is no point, where these 2 regions would overlap. Yesterday I did this to Y motor and now it is better than it was before. But this one is something different. -- Viesturs If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial Remotely access PCs and mobile devices and provide instant support Improve your efficiency, and focus on delivering more value-add services Discover what IT Professionals Know. Rescue delivers http://p.sf.net/sfu/logmein_12329d2d _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
