Chris Radek wrote: > On Wed, Sep 15, 2010 at 09:18:04AM -0700, Kirk Wallace wrote: > >> I have a project that requires being able to locate a scribed line very >> accurately(, worm gear cutting without a rotary table). One way to do >> this might be to use a microscope with a webcam, then center the line on >> an electronic cross-hair. If anyone has done this, your reply could save >> me from setting up the experiment myself. If this works, then the issue >> is how can I get EMC2 to use the webcam as position feedback. >> > > I don't understand the task you describe (scribed lines on a worm > gear) but in general you can locate by eye pretty easily by centering > the sharp pointer from a wiggler set, bringing it very close to your > scribed line, and centering it over the line with a loupe. You can > get easily within .001 inch. > > I doubt using a webcam will give you better results but it sure is > more complicated. > > > for what I understand, he wants EMC to use a webcam to follow the line realtime.
We did this when I was at school, for a robotic project, but that was not very accurate, and was really a pain to program in the H8 microcontroller we had. The webcam response time was a large part of the problem. ------------------------------------------------------------------------------ Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing. http://p.sf.net/sfu/novell-sfdev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
