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3231

General Mach Discussion / Re: 3d profile problem

« on: June 11, 2013, 07:38:31 AM »

It's the duration of the step signal sent to the drives. Most drives require at least 2us for reliable operation. Some require 5 or more.
I've seen many cases with Gecko G540 users, where a weak parallel port requires 15us pulse widths to get reliable operation.

3232

General Mach Discussion / Re: 3d profile problem

« on: June 10, 2013, 09:09:59 PM »

Increase the step and dir pulse width to 2 or more.

What acceleration and velocity settings are you using for the Z axis? Try reducing the Z axis acceleration by half.

3233

Screen designer tips and tutorials / Re: Small changes to jog flyout

« on: June 09, 2013, 04:53:29 PM »

Hit Tab to open.
Drag to where you want it.
Hit Tab to close it.
Tab again to open.
Drag again to where you want it.
Tab again to close it.
Close and Restart Mach3, and it should then stay where you want it.

Continuous mode is OEM Button 276
Step is 275

3234

General Mach Discussion / Re: Jog Pad issue...TIME TO UPGRADE

« on: June 09, 2013, 08:37:00 AM »

What kind of machine are you currently using? And what motors and drives?
With homebuilt (and even cheap ready to run) machines, sometimes frequent adjustments and alignments are required to keep them operating properly.
The slightest amount of misaligment can cause binding of the motion components, leading to stalling and lost position. Even changes in temperature can cause issues.

If the jog keys were working before, it's possible that the .xml file became corrupt.

The .xml you posted doesn't seem correct? It has a parallel port address, and no motors set up in motor tuning? Maybe because I don't have an SS, but it doesn't seem right.

As for the Greenbull....

Just my opinion, but I think the Build Your CNC stuff is all overpriced and underperforming on many levels. They seem to have a large community of happy users, but to me they don't have any idea that there are far better products out there. Take a look at CNC Router Parts, for a much more rigid, all metal machine, that will run circles around the Greenbull for about the same money.

3235

General Mach Discussion / Re: Formula axis correction limitation

« on: June 09, 2013, 08:04:41 AM »

Quote

Would I be correct in stating that all g0 moves are not affected by the formulas?

I don't think so. I believe that the formulas should be working during G0 moves.
I recall someone in the past posting some exact sequences that would cause the stalling, and I was able to duplicate it.
I think that what happens, is that in certain situations, the formulas are ignored, and when they start working again, one axis is out of position (per the formulas), and it tries to instantaneously jump back into position, which isn't possible.

I'd try to find a workaround for using the formulas, as the vast majority of Mach3 bugs like this will never be fixed. When it get released, I'd expect Mach4 to be much better at things like this.

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