On 02/18/2016 04:32 AM, Dave Cole wrote: > > > On 2/17/2016 9:17 PM, Jon Elson wrote: >> On 02/17/2016 03:52 PM, Dave Cole wrote: >>> I'm shopping for some linear/glass scales for a custom industrial machine. >>> >>> I only need to read 8" of travel. >>> >>> Does anyone know of an economical solution. I'd like full quad >>> outputs - ttl would be ideal. >>> I don't need super resolution or accuracy. .001" would be sufficient.
There are a few linear encoder designs floating around The Net that are based on using a wire or ribbon that turns a cheap rotary encoder. Hmmm... well there used to be some designs, but I can't seem to find any off hand. The basic idea is similar to the linear position mechanism in floppy drives, using a metal ribbon fixed at one end, then wrapped around the encoder shaft, and fixed at the other end with a spring to take up any slop. Or use a rack and pinion to turn the rotary encoder. USDigital.com also has some less expensive linear solutions. http://usdigital.com/products/encoders/incremental/linear/LIN -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/ ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
