> I was going to drill holes into a disk with a binary bit pattern and > clock bit. It's not very elegant and larger than I like. Does anyone > know of an existing (inexpensive) absolute encoder that would work?
Why not just drill a single set of holes and use two offset opto isolators to get a quadrature output. (Or buy one). then feed that to an up down counter. One signal of the quad encoder is UP/DOWN the other one becomes the CLOCK for the counter. Gray code not needed if you do that Initializing the counter can be done with an index hole or with software. Jim C ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
