1. Configuring LinuxCNC
  3. Advanced Configuration
  5. Resolver Output

Resolver Output

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05 Oct 2012 18:59 #24996 by LAIR82
Resolver Output was created by LAIR82
Hello Guys,

I was wondering if anyone has any Ideas on my predicament, I have a resolver on my spindle on my lathe project, and its index enable feedback is 2 pulses per rev, Linux only wants 1. It is very evident due to it turning a twin lead thread on my part when I tried a 1"-8 thread. Any ideas would be helpful.

Thanks

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05 Oct 2012 19:08 #24999 by andypugh
Replied by andypugh on topic Re:Resolver Output
LAIR82 wrote:

I have a resolver on my spindle on my lathe project, and its index enable feedback is 2 pulses per rev, Linux only wants 1.


That sounds extremely inconvenient.

Is it belt driven? (If it is, then you could probably change the ratio).

How are you reading the resolver? (If it is with the Hostmot2 Resolver component, then I could potentially add a feature to work around this)

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05 Oct 2012 19:12 - 05 Oct 2012 19:13 #25000 by LAIR82
Replied by LAIR82 on topic Re:Resolver Output
It is belt driven, but due to the mounting and layout in the area where its at, I cannot change the sprocket.



I am using the hostmot2 thru the mesa 5I23/7I49 system.
Last edit: 05 Oct 2012 19:13 by LAIR82.

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05 Oct 2012 19:23 #25002 by andypugh
Replied by andypugh on topic Re:Resolver Output
LAIR82 wrote:

I am using the hostmot2 thru the mesa 5I23/7I49 system.

I think the only option is for you to change resolvers, or me to change the code.

The latter seems more convenient for you.

I will have a look into it tonight.

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05 Oct 2012 19:25 #25004 by LAIR82
Replied by LAIR82 on topic Re:Resolver Output
That would be awesome, Its the last step and I think my first retrofit is done.

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05 Oct 2012 21:55 #25031 by andypugh
Replied by andypugh on topic Re:Resolver Output
LAIR82 wrote:

That would be awesome, Its the last step and I think my first retrofit is done.


I assume that if you are using the tool offset patch then you are compiling from scratch and can try out an experimental patch?

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05 Oct 2012 23:41 #25039 by LAIR82
Replied by LAIR82 on topic Re:Resolver Output
I couldn't apply the patch like it says to in the git manual. I actually opened each file that it applied to and modified what the patch was supposed to. But, if you want to send it in a patch style format I can try to apply it. I should honestly figure out how to make that happen. Worst case I can do the same to the appropiate files in the linuxcnc-dev src folder.

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06 Oct 2012 00:01 #25040 by andypugh
Replied by andypugh on topic Re:Resolver Output
LAIR82 wrote:

I couldn't apply the patch like it says to in the git manual. .


To use git am it needs to be a git-format patch, I think.

Othewise you use the patch command.

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06 Oct 2012 00:49 #25042 by andypugh
Replied by andypugh on topic Re:Resolver Output
Nearly 2am here, and I am still struggling with the previous job. I don't think that the change will happen tonight, sorry.

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06 Oct 2012 03:12 #25050 by LAIR82
Replied by LAIR82 on topic Re:Resolver Output
No rush. Monday is fine.

Thanks again

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  1. Configuring LinuxCNC
  3. Advanced Configuration
  5. Resolver Output
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