First cut with LinuxCNC

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08 Oct 2012 05:09 - 08 Oct 2012 05:13 #25113 by garyo1954
Somebody has probably posted this before but don't know where to look for the answer.
This is my LinuxCNC first run using HobbyCNC Pro Board on a Microcarve A4.
The motors are HobbyCNC NEMA23 -305- DS8A.

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Everything runs excellent, so no complaints.






The "L" and "i" touching is probably a kerning factor. Not a problem.
But why is the logo backward?
Is that normal, something I did in the setup, or is my computer dyslexic? :silly:
What am I missing?

Thanks,

G
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Last edit: 08 Oct 2012 05:13 by garyo1954.

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08 Oct 2012 11:13 - 08 Oct 2012 11:15 #25115 by BigJohnT
Replied by BigJohnT on topic Re:First cut with LinuxCNC
I would guess your direction pins are backwards on X and Y. When you jog does the tool (not the table) move in the correct direction? For example a mill with moving table the table goes left when you press the + jog key for the X axis which in effect moves the tool to the right in relation to the material.

John
Last edit: 08 Oct 2012 11:15 by BigJohnT.

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08 Oct 2012 23:54 #25151 by garyo1954
BigJohnT wrote:

I would guess your direction pins are backwards on X and Y. When you jog does the tool (not the table) move in the correct direction? For example a mill with moving table the table goes left when you press the + jog key for the X axis which in effect moves the tool to the right in relation to the material.

John


I really appreciate it John.




This is the setup I am using.
Should I modify setup in Stepson wizard or just invert the X and Y?

I'll make the changes and post back the the results.

Thanks,

G
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09 Oct 2012 00:30 #25153 by BigJohnT
Replied by BigJohnT on topic Re:First cut with LinuxCNC
I would go ahead and make the changes in the Stepconf wizard until you get to the point you have to leave it behind.

John

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09 Oct 2012 13:08 #25164 by andypugh
Replied by andypugh on topic Re:First cut with LinuxCNC
garyo1954 wrote:

This is the setup I am using.


I am sure you know what the picture means, but it isn't all that clear to me.

Your X and Y directions are correct, if the captions show where the tool moves relative to the table.

Standing where the photo was taken X+ should move the spindle to the right.
Y+ should move the table towards the camera.

It's trivial to invert the direction pins in Stepconf. I have a feeling that you only need to invert one. (inverting both will give you the same mirrored pattern in the opposite quadrant)

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09 Oct 2012 14:58 #25167 by garyo1954
Apologies Andy and John.
Didn't get to play with the machine as I planned last night.

Andy you make a good point. Just sitting here with graph paper and trying to figure out the X and Y coordinates by quadrant was burning my brain. I might need more coffee.

What you said makes perfect sense. The table moving along the Y Axis is what has me confused.

Inverting the Y axis (where Y+ means the table moves toward the camera) will solve the problem.

I'm embarrassed to admit it, but had I taken the time to flip or mirror the picture top to bottom in a paint program, I would have seen what was happening.

Still going to test it and post back the results, but in my mind, you nailed it.

Thanks!

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09 Oct 2012 17:44 - 09 Oct 2012 17:51 #25176 by garyo1954
Excellent call Andy! Worked like a charm.

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Thanks!

G
Last edit: 09 Oct 2012 17:51 by garyo1954.

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