What alternatives to gantrykins?

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17 Jan 2020 12:17 #155058 by captain chaos
Some 6 years ago was running gantrykins on ubuntu 10.04 with Gecko 540 gear through parallel port.
Fortunately I still have copies of my original Hal and ini files.
Was running 4 joints on cnc router with joints 0 and 3 running x axis forward and reverse respectively (steppers opposed facing).
The old computer has since died so am looking at setting up a new machine.
I have loaded LinuxCNC 2.7.14 Debian 7 Wheezy but can't seem to find a gantrykins configuration.
Can anyone please advise or recommend a new setup for me. I have seriously reverted to totally noob.

Cheers Paul

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17 Jan 2020 13:22 #155059 by tommylight
Upgrade to 2.8 or 2.9, it has joints/axis feature so you can have 2 or more joints configured as axis natively.

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18 Jan 2020 01:29 #155088 by captain chaos
Thanks for that I now have 9.5 stretch.
Where would i find joints/axis feature?
I have looked through all the axis configs but don't seem to find one, are they native to all axis configs?

Thanks Paul

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18 Jan 2020 13:55 #155096 by Todd Zuercher
The debian version has nothing to do with the Linuxcnc version. You need to change the Linuxcnc repository to point to the 2.8 or Master version of Linuxcnc. Then perform an update either with Synaptic or sudo apt-get update and sudo apt-get upgrade.

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19 Jan 2020 10:48 #155140 by captain chaos
Unfortunately my assigned expert border tag definitely does not reflect my computer skills. After 6 years out of the loop I have seriously reverted to totally noob.
I am getting better latency on my old Ubuntu 10.04 i 386 iso, burnt in Dec 2012, by about half on temporary or live install than on the Linuxcnc 2.7 Strech-Uspace i386 iso full install. Unfortunately after spending a day trying to figure out how to point to 2.8 or master and trying to do sudo updates and upgrades and getting requests for grub in bootloader or something I am now totally confused.
I have my original gantrykins files, how do I set them up to run in a new a new Axis config in Ubuntu10.04 please.
Cheers Paul

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19 Jan 2020 20:26 #155186 by Todd Zuercher
I don't think 2.8 and beyond support ubuntu 10.04. You cold try the Debian wheezy k iso. It uses RTAI and should give almost as good latency. But it is also eol. If you feel like cutting your teeth on the bleeding edge you could give this a try forum.linuxcnc.org/9-installing-linuxcnc...or-new-rtai-packages
But I have not tried it myself.
The following user(s) said Thank You: captain chaos

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20 Jan 2020 10:56 #155243 by captain chaos
OK so i now have an old Acer computer running running Ubuntu 10.04 linux cnc 3 with a Latency of Base jitter 17,000 (ns). I have my old files # Kinematics lodart gantrykins.
Can anyone tell me how I go about setting up these original files in a gantrykins config to run on this computer with Ubuntu 10.04 Linuxcnc3.
this would be much appreciated
Thanks Paul.

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26 Jan 2020 19:40 #155838 by andypugh
What do you mean by "LinuxCNC 3" ?

If you are using LinuxCNC 2.7, and you still have your old gantrykins configs, what is it that isn't working now?
The following user(s) said Thank You: captain chaos

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26 Jan 2020 21:39 #155860 by tommylight
Ubuntu 10.04 iso had Linuxcnc3 in it's name
linuxcnc.org/iso/ubuntu-10.04-linuxcnc3-i386.iso

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27 Jan 2020 10:25 #155889 by captain chaos
Hi Andy thanks for your interest,

I am running Gecko 251 drives with MB-02V6 Bidirectional Breakout board
All Parallel ports are to be active high
I selected Gantry with gantrykins from configs and created desktop shortcut.
I then cut and pasted my files into the config .
When I try to run it on my machine I get the following.

[Print file information:
RUN_IN_PLACE=no
LINUXCNC_DIR=
LINUXCNC_BIN_DIR=/usr/bin
LINUXCNC_TCL_DIR=/usr/lib/tcltk/linuxcnc
LINUXCNC_SCRIPT_DIR=
LINUXCNC_RTLIB_DIR=/usr/realtime-2.6.32-122-rtai/modules/linuxcnc
LINUXCNC_CONFIG_DIR=
LINUXCNC_LANG_DIR=/usr/share/linuxcnc/tcl/msgs
INIVAR=inivar
HALCMD=halcmd
LINUXCNC_EMCSH=/usr/bin/wish8.5
LINUXCNC - 2.5.0
Machine configuration directory is '/home/paul/linuxcnc/configs/gantry'
Machine configuration file is 'gantry.ini'
INIFILE=/home/paul/linuxcnc/configs/gantry/gantry.ini
PARAMETER_FILE=emc.var
TASK=milltask
HALUI=
DISPLAY=axis
Starting LinuxCNC...
Starting LinuxCNC server program: linuxcncsvr
Loading Real Time OS, RTAPI, and HAL_LIB modules
Starting LinuxCNC IO program: io
Shutting down and cleaning up LinuxCNC...
Killing task linuxcncsvr, PID=2086
Removing HAL_LIB, RTAPI, and Real Time OS modules
Removing NML shared memory segments
Cleanup done

Debug file information:
Can not find -sec MOT -var MOT -num 1
Can not find -sec IO -var IO -num 1
Can not find -sec LINUXCNC -var NML_FILE -num 1
Can not find -sec EMC -var NML_FILE -num 1
Could not open command file 'gan_xxyz.hal'
2086
PID TTY STAT TIME COMMAND
Stopping realtime threads
Unloading hal components

Kernel message information:
[ 980.116514] I-pipe: Domain RTAI registered.
[ 980.116530] RTAI[hal]: <3.8.1> mounted over IPIPE-NOTHREADS 2.6-03.
[ 980.116534] RTAI[hal]: compiled with gcc version 4.4.3 (Ubuntu 4.4.3-4ubuntu5) .
[ 980.116543] RTAI[hal]: mounted (IPIPE-NOTHREADS, IMMEDIATE (INTERNAL IRQs DISPATCHED), ISOL_CPUS_MASK: 0).
[ 980.116546] PIPELINE layers:
[ 980.116551] dfacde20 9ac15d93 RTAI 200
[ 980.116554] c085cb20 0 Linux 100
[ 980.148190] RTAI[malloc]: global heap size = 2097152 bytes, <BSD>.
[ 980.148476] RTAI[sched]: IMMEDIATE, MP, USER/KERNEL SPACE: <with RTAI OWN KTASKs>, kstacks pool size = 524288 bytes.
[ 980.148485] RTAI[sched]: hard timer type/freq = APIC/8333018(Hz); default timing: periodic; linear timed lists.
[ 980.148490] RTAI[sched]: Linux timer freq = 250 (Hz), TimeBase freq = 2799658000 hz.
[ 980.148493] RTAI[sched]: timer setup = 999 ns, resched latency = 2943 ns.
[ 980.148668] RTAI[usi]: enabled.
[ 980.307659] RTAI[math]: loaded.
[ 980.878644] RTAI[math]: unloaded.
[ 981.004568] SCHED releases registered named ALIEN RTGLBH
[ 981.021706] RTAI[malloc]: unloaded.
[ 981.120025] RTAI[sched]: unloaded (forced hard/soft/hard transitions: traps 0, syscalls 0).
[ 981.126321] I-pipe: Domain RTAI unregistered.
[ 981.126335] RTAI[hal]: unmounted.]

I removed the combined limit / home switches, spindle and probe from the machine to simplify things
may actually have complicated things :(
I have set Parallel port to SPP mode

Cheers Paul

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