On Sun, 2012-02-26 at 00:07 -0800, Walt Rogers wrote: > On 2/26/2012 12:01 AM, Walt wrote: > > On the remote chance that this is unknown, I share this. > > > > I see a steady supply of ink jet printers--cost = $1.29--at my local > > thrift stores (e.g. Goodwill) that have encoder assemblies with discs on > > the order of 2 and 3 inches diameter and 180 lines per revolution of > > resolution. > > > > Perhaps this is a solution if you have a similar source of printers. > > > > > 180 LPI...
Here is my encoder from an Epson 600 (I think). http://www.wallacecompany.com/machine_shop/Shizuoka/100_1133-1a.JPG The more expensive printers seem to have DC motors and encoders. The problem with this one is that there is no index. Some printer encoders are single channel (A only, no B or I). I seem to recall I use an index from a chain button and micro-switch. I've changed it so often, I'm not sure what I have setup now. There are lots of interesting bits inside printers for those with inquiring minds. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA ------------------------------------------------------------------------------ Virtualization & Cloud Management Using Capacity Planning Cloud computing makes use of virtualization - but cloud computing also focuses on allowing computing to be delivered as a service. http://www.accelacomm.com/jaw/sfnl/114/51521223/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
