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Well I got the digest #1 last night (the second digest, since there was
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a digest #0). Since my introduction was labeled message #1, anyone who signed up after it was posted didn't see it (unless they signed up for digested as well), so I included it below. As I noted below, I'm in the process of doing my own DRO. Resolution of the encoders is probably biggest $ consideration. In other words, the more resolution you want the more $ you need. US Digital can provide linear encoders that will provide resolution of .0006". These cost around $50 bucks each, depending on length, shorter = cheaper. The are also manufacturers that have linears with .0001" resolution, they'll cost around $500 for an 18" version. I got the US Digital PC interface card. It has 4 channels, so, while I'm only using 2, one for X and one for Y, I can expand to a Z axis if necessary. At this point I don't know what I'd do with a 4th dimension, speed I suppose. The actual display was cheap, that old PC that been gathering dust since the last upgrade was free! I wrote the software, so I can make it do what ever I want. Currently, it displays X and Y travel as well as feed rate. It can do presets, zeros...the usual stuff. Message: 1 |
