Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!wang!mike From: mike@wang.com (Mike Sullivan) Newsgroups: comp.robotics Subject: Re: What is the cheapest shaft encoder you know of? Message-ID: Date: 31 May 91 04:41:44 GMT References: Organization: Wang Labs, Lowell MA, USA Lines: 27 pkahn@ADS.COM (Philip Kahn) writes: >An easy way out of this is to find a really cheap, repeatable shaft >encoder that effectively will provide me with "multiple limit" positions. >I don't want to spend more than $10 per in quantity, they should slide >over the shaft, and I don't need good resolution (obviously), though >repeatability probably means it should be optical. HP makes some nice >inexpensive encoders (that have great resolution), though the $25 per >is too pricey. Any suggestions?? When I were a lad... Back when I worked for Real World Interface we built our own shaft encoders by drilling holes in a gear blank ( any number you like ) and ran it through a opto-isolator ( led-reciever pair ). This requires a little mounting hardware but you ought to able to squeak under the $10 mark. But you tell kids that these days and they won't believe ya! ;-) HTH mike -- ______________________ / __ __ \ | Michael J. Sullivan | Love all | | \ /\ |\ | / ` | | Independent | Serve all | |__/ /--\ | \| \__T | | mike@WANG.COM | Save the Planet \______________________/ | FUN FUN FUN FUN FUN FUN| - Rock Hard -