On Monday 23 July 2018 08:35:49 Petr Ledvina wrote: > DVD laser pickup has everything for reflective surface focus > measurement. Focus output is analog signal from 4-quadrant detector. > Just glue focusing coils and servo Z to focus. > So if all that could be borrowed from a cdrom or dvd player, we'd have a non-contact scanning micrometer the rod could be scanned with, at a considerably higher rate of sideways speed. They can stay in focus at 10k rpms. Too bad its not all in one easily identifiable package...
> http://www.gaudi.ch/GaudiLabs/?page_id=652, google reveals quite a lot > of other interesting projects ... > I'll look at this later, I need to go pay my property taxes this afternoon. > > Regards, > Petr Ledvina -- Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
