There are different versions of that sensor, one of which has a 75 line/in resolution. The highest resolution they make is 180 line/in.
----- Original Message ----- From: "Kirk Wallace" <[EMAIL PROTECTED]> To: "Enhanced Machine Controller (EMC)" <[email protected]>; "Alex Joni" <[EMAIL PROTECTED]> Sent: Friday, February 16, 2007 4:36 PM Subject: Re: [Emc-users] Home Made Encoder Ideas >I just bought a drive with Lightscribe and I didn't bother to look at > the CD's that came with it. It looks like there are about 400 lines per > rev. and 80 lines per inch. I was hoping for a 2000 lines per rev. class > design. Googling got me a link to Agilent's AEDR-8300 reflective sensor. > My first guess is that 80 lines per inch is the maximum resolution for > this sensor. Another guess is that they are using geewiz interpolation > to get the resolution they need for Lightscribe. > > Kirk > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > On Fri, 2007-02-16 at 23:17 +0200, Alex Joni wrote: >> > One method might be to use Lighscribe to burn a rotary scale image >> > to a >> > CDR disk, but cd's are reflective and practical encoders need to be >> > transmissive. Maybe an emulsion used for circuit board etching could >> > be >> > used on a clear CDROM? Two disks would be needed, one for the scale >> > and >> > another for a mask. >> >> well, if you're already acustomed to lightscribe disks, look at the >> inside of the disk. >> You'll see markings that are perfect for an encoder, you just need to >> find (mouse?) 2 optos to work with that. >> >> The markings are pretty visible in this picture I took: >> http://dsplabs.cs.utt.ro/~juve/dropbox/lightscribe/IMG_9645.JPG >> >> Regards, >> Alex > > > > ------------------------------------------------------------------------- > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share > your > opinions on IT & business topics through brief surveys-and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
