Gantrykins Questions

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17 Oct 2012 00:25 #25390 by PortlandGTS
Replied by PortlandGTS on topic Re:Gantrykins Questions
I finally got some time to work on this some more.

I realized that lost steps in opposite direstions could cancel each other out, so I put a dial gauge on an axis and cut the repetitions down to 10. I then ran the program repeatedly and checked the dial gauge after each run. Over all the runs, the dial gauge always wound up under .001" from the correct point. Since one step is about .005", I don't think I'm losing steps.

I also bumped the two direction parameters up to 20000. still get the chirp.

Tom

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17 Oct 2012 11:01 #25399 by BigJohnT
Replied by BigJohnT on topic Re:Gantrykins Questions
Could the chirp be a mechanical noise?

John

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20 Oct 2012 19:18 #25498 by PortlandGTS
Replied by PortlandGTS on topic Re:Gantrykins Questions
BigJohnT wrote:

Could the chirp be a mechanical noise?

John


Yes. When I put my head close to a stepper, it sounds like a click within the stepper. But what did you think it might be, besides a mechanical noise?

The thing I find interesting, is that I never heard the noise before I switched to hardware step generation.

Tom

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20 Oct 2012 21:48 #25508 by BigJohnT
Replied by BigJohnT on topic Re:Gantrykins Questions
You might be getting a faster direction change that has reveled something a little loose like a coupling...

John

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