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Tom,

I may have some similar needs for screw mapping or leadscrew comp on my machine as what bhurts encountered where I run full 3D and several or more seconds of look ahead. A couple of follow...

Well, I found a few things.

I removed the belt from the motor and got this:

https://www.cnczone.com/forums/attachment.php?attachmentid=434730&stc=1

The closeup matches the pattern of the...

Tom, thanks for digging into it.

My prior note about 10-14hz was for my prior tuning when I wrote it. After that, I did make the more aggressive tune that I used to generate the graphs and files....

Some data and images...

28000 units/inch
Max velocity with current setup is 105000/s or 225ipm.

https://www.cnczone.com/forums/attachment.php?attachmentid=434624&stc=1


Full Rapid with...

Sorry, guys, for some reason I occasionally stop getting notifications when new messages are posted on cnczone. I only noticed you posted now that I am getting back to the issue after having...

Tom,

That is a bit to chew. I was not aware of the specific formulas or the exact science, but what you noted is precisely what I have been pondering.

The encoder is on the servo motor. The...

Thanks for the reply. My machine is a medium duty 4'x4' gantry router.


I assume you mean rebuild the ball nuts, not screws. That may be an option for some, but In this case, due to poor...

Well, I did a lot of tuning at various speeds and was able to make some improvement. I also was able to map the range of velocity on my X that was nastiest. However, I couldn't find a tune that...

Thanks, Tom. I will give it all a try as soon as I can.

I have tried a range of frequencies with the Bode but not sure if I am wasting my time. So I know, what range of frequencies may be...

I retuned from scratch and have somewhat better results. I am near the +/- 6 encoder units follow error in the step response move testing at my max velocity and infinite jerk.

Bode plots are...

Yes, moves, I was referring to the size of the move as a step, sorry. I have been using "move" but unclear when "step" should be used vs "move" (I could not determine that from documentation or what...

Tom,

Regarding the spikes, they were reading 2.5v from numerous points, although, I stayed away from probing the boards in case I slipped and hit the wrong area. I tried probing from a 4" lead of...

Resurrecting this thread to update my status and trying to fix my biggest problem.

To update, I have retuned, mostly, and found my simple math needed work in determining my max velocity and accel....

Thanks for the quick reply, Tom.

I should clarify the program isn't usually halted when it flashes to yellow. Normally, it is a very quick flash of yellow then back to blue like nothing has...

I am not sure if this is a symptom, problem, or normal and I simply didn't notice it before. While running gcode in KmotionCNC, the DRO is occasionally changing color to yellow then back to the...

Not that I would really know better, but I am surprised the GUI is the toughest. What about a browser friendly version? I see a lot of developers go that way to be OS independent.

I too prefer...

Tom,

While it WAS seemingly not acting up under laptop battery power, or other AC outlet, it now acts up 100% with any power source. Additionally, it does not happen immediately upon powering the...

Tom,

The machine sat for a few days and now it is having the issue all of the time.

I will be trying another PC running XP to see if it makes a difference.

I have also looked over my...

Well, after hours of updates, I have let my system update win 10 to current. Build 1703 I think.

It is stable when I am on laptop battery power only, or when I am plugged into 120vAC power away...

Thanks, Tom.

Your point on the possibility of other variables being altered to a point of hardware problem exposure is understandable. It may well be the case. With my main observation of the...

Thanks for the replies.

I did have numerous noise issues that were inherited from the original build of my machine. After a lot of extensive and thorough rework, I have had no known noise issues....

Tom,

The system is the same as noted earlier in this thread, along with the same series of events. Here it is again:

Boot up win 10
Power up Kflop with the snapamp and wait a moment to give...

Hey guys. Sorry to be so delayed in response. I didn't see any notifications there was activity.

After I had taken my PC offline, it worked fine for the most part.

Unfortunately, I let things...

Tom,

I think I may now get a chance to start re-tuning my drive system. After a bit of use, I have been running into issues with cut quality that I can no longer get by with as is. I hope to be...

After further use, I also found that my AVG antivirus appears to be interfering with KmotionCNC responsiveness. I found hitting any of my buttons, or running mcodes from the prompt, were severely...

Thanks Tom.

Kflop does not appear to be crashing or resetting. It actually keeps the encoder counts/DRO between (KmotionCNC) crashes as well, and does not seem to care about power being sent to...

And the gross offender is...

"Update for Windows 10 Version 1607 for x64-based Systems (KB3150513)"

That dirty dog was the trigger for the problem. It was the last installed, first to try, and...

I have an urgent problem. When I shut down my machine control system running win 10, it forced an update. I have previously tried to turn the updates off without luck, and was pretty concerned with...

Just got the blue screen windows crash while trying to load KmotionCNC. Pretty sure I don't have a hardware problem now.

I made the mistake of yet again delaying taking my shop network offline...

Further study...

I am able to run my initialization script shortly after starting KmotionCNC without immediate crash as long as I do not have the servo power on. When I actually power up my...