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In all honesty if the kernel gives no issues I wouldn't bother upgrading, from memory there isn't much of a difference in performance.

The first issue I run into is that my gear track is 5 TPI The shaft diameter to the motor is 18mm does anyone build gears with metric bores and imperial gear pitch? buy a 5/8 bore pinion chuck it up in the lathe and bore it out to 18mm? hand file to broach out the keyway? a 20 T pinion should get me to about 600 ipm if my calculations are correct. which is honestly to fast but I am worried a 10t will not have enough contact and skip or slop.

I have a spindle that has motor pulley belt pulley
after has a geartrain with 2 positions-speeds.
I want to mount encoder to second pulley shaft before geartrain.
Iam confused how to set ini file values
max_speed min_speed encoder_scale output_scale etc


 

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 Hi, I updated from Linux CNC 2.8.2 to 2.9 and get the following errors when I try and open Linux CNC      

Can anyone help Please
Thanks

The IP address is a 32 bit number internally, so you should be able to pass it as an unsigned long parameter. you would need to convert 192.168.1.1 to 4 bytes in hex, then use setp

I could need a little help. I compiled my kinematics with halcompile --install. And i used the vismach xyzbc-trt-kins (switchkins) demo. I tried to replace the original Kinematics with my custom kinematics and after some commenting out i got this error message. Would be glad for some input to guide me in the right direction.

I continued a little bit and now its this:

Note: Using POSIX realtime
motmod: dlopen: /usr/lib/linuxcnc/modules/motmod.so: undefined symbol: kinematicsSwitch
././xyzbc-trt_cmds.hal:38: waitpid failed /usr/bin/rtapi_app motmod
././xyzbc-trt_cmds.hal:38: /usr/bin/rtapi_app exited without becoming ready
././xyzbc-trt_cmds.hal:38: insmod for motmod failed, returned -1
20961
Stopping realtime threads
Unloading hal components
Note: Using POSIX realtime

Because there are no cutting forces, there is no need for closed loop motors on a plasma machine. The only time I saw missed steps was when the motors overheated which is a result of motor voltage too high and/or velocity or accelleration is too high when deliberately pushing the limits...

Raspberry Pi 4 Model B Rev 1.2
Mesa 7c81
Debian GNU/Linux 12 (bookworm) 6.1.54-rt15 #1_RT Fri Nov 17 17:02:27 AEST 2023 aarch64

I installed LinuxCNC 2.9.3 from the linuxcnc ISO image a couple of years ago, and upgraded to 2.9.4 yesterday by:
$ sudo apt update  && sudo apt full-upgrade

I now have:
rick@raspi4:~$ dpkg -l | grep linux-image
ii  linux-image-bcm2711-rpi-4            6.1.54-rt15-1                           arm64        Linux kernel, version 6.1.54-rt15
rick@raspi4:~$ dpkg -l | grep linuxcnc
ii  linuxcnc-doc-en                      1:2.9.4                                 all          motion controller for CNC machines and robots (English documentation)
ii  linuxcnc-uspace                      1:2.9.4                                 arm64        motion controller for CNC machines and robots
ii  linuxcnc-uspace-dev                  1:2.9.4                                 arm64        PC based motion controller for real-time Linux

rick@raspi4:~$ uname -a
Linux raspi4 6.1.54-rt15 #1 SMP PREEMPT_RT Fri Nov 17 17:02:27 AEST 2023 aarch64 GNU/Linux

Is there a newer RT kernel then the one from 2023 ?
If so, how can I upgrade the kernel without having to reload the entire system from the latest ISO image ?

TIA,
Rick
 

Hi Andy,
Thanks for the response. One idea I was playing around with was making a raw-module API for the HM2 driver where user-provided HAL components can just hook into that to get HM2 module lifecycle notifications and make raw reads and writes to the FPGA (see  hostmot2-module.h ).

Unfortunately I haven't had time to complete that as I eventually went with just creating a HAL component that pokes the GPIO lines which were adequate for my needs. As for the device I'm trying to control, it's for the Emco Concept Mill55 ACC backplane that has a bus-multiplexor device to read and write slow I/O signals. I'm trying to do a minimal conversion where only the (old, broken) computer is replaced with a 7i80HDT, that interfaces directly with the ACC backplane board. Eventually I'll try to do a write-up of my conversion, but for now, I'm still trying to get everything working.