Unless you are going to implement this in a commercial manner, I wouldn't waste your time trying to do this. Even commercially, I doubt the idea is viable. If it was, I suspect that most of the stepper drive manufacturers would include absolute tracking in their stepper drives.
I bought an enclosed encoder from Automation Direct for about $130 and put it on the back of a Nema 34 motor to monitor and correct position since the application required the stepper motor to stall, stop and then continue on. Adding the encoder worked perfectly. Dave On 8/26/2014 1:38 AM, Gary Crowell wrote: > There was a kickstarter about a year ago, that did that. But I think it > only got 100 pulses/rev out of a 200 step/rev motor. I have the data on it > here somewhere if it'll help. > On Aug 25, 2014 8:02 PM, "rayj" <[email protected]> wrote: > >> Greetings, >> >> I'm wondering if anyone on this list has used a stepper motor as an >> encoder to monitor a shaft position and used it as input to LCNC? >> >> A related question, has anyone used a stepper in a setup that uses it as >> an encoder to measure how much the shaft has been rotated and then used >> the stepper to rotate the shaft back to the original position. >> >> TIA >> -- >> Raymond Julian >> Kettle River, MN >> >> The things we admire in men, kindness and generosity, openness, honesty, >> understanding and feeling are the concomitants of failure in our system. >> And those traits we detest, sharpness, greed, acquisitiveness, meanness, >> egotism and self-interest are the traits of success. And while men >> admire the quality of the first they love the produce of the second. >> -John Steinbeck, novelist, Nobel laureate (1902-1968) >> >> >> ------------------------------------------------------------------------------ >> Slashdot TV. >> Video for Nerds. Stuff that matters. >> http://tv.slashdot.org/ >> _______________________________________________ >> Emc-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > ------------------------------------------------------------------------------ > Slashdot TV. > Video for Nerds. Stuff that matters. > http://tv.slashdot.org/ > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com ------------------------------------------------------------------------------ Slashdot TV. Video for Nerds. Stuff that matters. http://tv.slashdot.org/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
