G93 problem with speed

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11 Jan 2021 18:33 - 11 Jan 2021 18:33 #194932 by andypugh
Replied by andypugh on topic G93 problem with speed

Clearly we have a misunderstanding here.


I think that the explanation for this misunderstanding is that I am an idiot.


In the part of my previous post I was trying to point out that problem I am facing cannot be solved by splitting moves in two moves as this does not change feed rate (speed) of the move, and this (speed) is what is actually limited by hard coded 0,1.


Yes, looking at the code properly, the output of the max() function is the final feedrate, not the F-number.

There is a fix on the way: github.com/robEllenberg/linuxcnc-mirror/...93-minimum-feed-rate
Last edit: 11 Jan 2021 18:33 by andypugh.

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12 Jan 2021 09:41 #195027 by kmeld
Replied by kmeld on topic G93 problem with speed
I am running rather old version of linuxcnc because I am running an old computer.

I have linuxcnc 2.5.0 on Ubuntu. And tried live CD with new system but it did not work.

Will I be able to somehow install new linuxcnc on my system?

Cris

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12 Jan 2021 10:24 #195031 by andypugh
Replied by andypugh on topic G93 problem with speed
That depends on which Ubuntu you are using.
The LinuxCNC support matrix is here:
wiki.linuxcnc.org/cgi-bin/wiki.pl?MinimumSoftwareVersions
LinuxCNC 2.8 is supported on Ubuntu 12.04 Precise, but not 10.04 Lucid.
(Lucid is 10+ years old...)

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12 Jan 2021 10:34 #195032 by kmeld
Replied by kmeld on topic G93 problem with speed
I had a look at the link you provided.
But with no linux experience at all I am not able to understand this table.

How can I find out which ubuntu I have?

Cris.

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12 Jan 2021 10:50 #195033 by andypugh
Replied by andypugh on topic G93 problem with speed
Try the command

lsb_release -a

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22 Jan 2021 09:16 #196186 by kmeld
Replied by kmeld on topic G93 problem with speed
Ok it says:
Description: Ubuntu 10.04.4 LTS
Release: 10.04
Codename: lucid

So what would be my options for upgrade?

Cris.

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22 Jan 2021 09:22 #196187 by andypugh
Replied by andypugh on topic G93 problem with speed

So what would be my options for upgrade?


You should be able to run 2.7.14.

linuxcnc.org/docs/2.7/html/getting-start...dating-linuxcnc.html

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22 Jan 2021 11:03 #196197 by kmeld
Replied by kmeld on topic G93 problem with speed
I am currently running linuxcnc 2,5

Should I update to 2.7?

Cris,

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22 Jan 2021 11:09 #196199 by tommylight
Replied by tommylight on topic G93 problem with speed
You should, there are some major changes to trajectory planner in 2.7.

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