Sherline Lathe Conversion ?

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02 Apr 2020 12:47 #162443 by Todd Zuercher
Also what breakout board are you using. Some breakout boards (especially cheap ones) have slow optical isolators on their inputs, not suitable for reading encoders at any reasonable speed. You might need to bypass these. (That is essentially what Hugh did by routing his encoder inputs through the un-isolated inputs of his 540 rather than through an isolated breakout board.)

Your base thread speed may still be an issue as well. All though it should be able to read the encoder faster than 400 rpm. I think It ought to be able to read up to about 2000 rpm.

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02 Apr 2020 21:02 #162494 by andypugh
Can you find the specs on the opto-couplers? (This could be easy if the markings are vsible, or impossible if they have been sanded off, as sometimes happens)

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