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  • tommylight
  • tommylight's Avatar
Today 20:51
Replied by tommylight on topic linking U axis to X

linking U axis to X

Category: Advanced Configuration

Was this same question asked before on this forum?
-
P.S.
Still did not finish my build of a 4 axis foam cutter, so not yet at this point.
  • Rykagon
  • Rykagon
Today 20:46 - Today 20:51
Newbie with Pi 4 install issues. was created by Rykagon

Newbie with Pi 4 install issues.

Category: Installing LinuxCNC

First of all, many thanks to user NWE advising on the image file to used for my Pi 4 (4 meg RAM) LinuxCNC project to retrofit an Intelitek Prolight 3000 CNC lathe up to modern controls.

The recommended download was:

2026-01-21-raspios-lcnc-2.9.8-trixie-arm64.img

I've downloaded and flashed the img file to a 250Gig micro SD card using balenaEtcher.
The Pi booted to a Debian themed desktop with a LinuxCNC splash, and launched a "boot wizard" asking for a new username and password.  It then recommended downloading and installing s/w updates.  That done, the Pi auto-rebooted and a login dialog box was presented.  It won't accept the new username and password I had created earlier.

I'm stuck.

Any coaching on next steps??

Thanks in advance.
  • foam man
  • foam man
Today 20:27
linking U axis to X was created by foam man

linking U axis to X

Category: Advanced Configuration

hi I have a 4 axis hot wire foam cutter. i move each axis separate, but I'm wondering if the text below makes sense for, essentially moving U and V with X and Y commands. Thanks

The Fix:
How to make UV emulate XY while keeping their own step calibrations.
To force U and V to mirror X and Y while preserving their independent step calibrations, you must link the signals before the math calculates the motor steps.
In LinuxCNC, you do this by linking the motion controller outputs to both sets of joints, rather than linking the step generators directly.
Open your machine's main .hal file and look for the lines connecting motion.coordinate-system to your joints. Change them to route like this
:hal# Force Joint 2 (U) to listen to the X-axis motion command
net x-output motion.coordinate-system.0.pos-cmd => joint.0.motor-pos-cmd joint.2.motor-pos-cmd

# Force Joint 3 (V) to listen to the Y-axis motion command
net y-output motion.coordinate-system.1.pos-cmd => joint.1.motor-pos-cmd joint.3.motor-pos-cmd
Use code with caution.Why this fixes the calibration issue:
The Signal: LinuxCNC outputs a raw request in millimeters (e.g., "Move X to 50.0mm").The Split: The HAL lines above take that 50.0mm request and send it to both Joint 0 (X) and Joint 2 (U) simultaneously.The Calibration: Joint 0 looks at its own SCALE setting in the .ini file to convert 50.0mm into steps for the X motor. Joint 2 looks at its own independent SCALE setting in the .ini file to convert 50.0mm into steps for the U motor.
  • Jens23
  • Jens23
Today 20:12
Replied by Jens23 on topic Trixy Install problems

Trixy Install problems

Category: General LinuxCNC Questions

I am currently trying to install this and it doesn't validate. When making a bootmedium RUFUS even said, that 1.5GB of the image are missing. Could you please check?

It looks like the 2.9.10 image is half the size of the previous.
  • FabLabRacing
  • FabLabRacing
Today 19:14 - Today 19:15

FabScan - LinuxCNC Camera-Assisted Tracing / Scanning Project

Category: Plasma & Laser

The idea/plan is to trace an object (existing part) or a drawing and capture that as a DXF. I don’t have a video of it running but I do have an example from a test run. The image file is what I traced with my machine & the DXF is the result of that trace, there are some issues right now as you can see in the DXF.. The app got "lost" on the smaller radius corner and circle and just started moving back & forth, but the bigger radius and straight line test weren't to bad. I haven’t tried to trace the bottom shape yet, the app isnt ready for that one yet :-)


File Attachment:

File Name: fabscan_tr...ge_1.dxf
File Size:104 KB
  • cmorley
  • cmorley
Today 18:28

FabScan - LinuxCNC Camera-Assisted Tracing / Scanning Project

Category: Plasma & Laser

Will this eventually allow line following while cutting or you are using it to 'trace' an object or drawing? then use that data to make a DXF which then could be used to run the cutter?

Do you have any video of a test?

I remember at my work we had a line following torch and a always thought that would be a great utility to add to linuxcnc's plasma cutter.
  • hupernikao23
  • hupernikao23
Today 16:52

STM32 ST-LINK Utility will not connect to the target.

Category: Computers and Hardware

I want to flash the rt1052 bin onto a DigitalDream EC300 ethernet controller board. The controller board has an MIMXRT1052 chip. I'm using the STM32 ST-LINK utility running on Windows 11. I've connected the pc to the board via an ST-Link V2 emulator. When I try to connect to the target in the utility, I get the error "Cannot connect to the target!". I've tried the Connect Under Reset and Hot Plug modes to no avail. The EC300 board is powered externally by a 24Vdc supply. I've connected the board to the ST-Link V2 using 3 pins as marked in the picture. What am I doing wrong?
  • cmorley
  • cmorley
Today 16:37
Replied by cmorley on topic I hate the 7i97T

I hate the 7i97T

Category: Configuration Tools

I added the 7i97t code to pncconf in master now.
  • tuxcnc
  • tuxcnc
Today 15:57 - Today 16:03
Replied by tuxcnc on topic I hate the 7i97T

I hate the 7i97T

Category: Configuration Tools

Pnconfig wizard doesn´t work for it. (....)  that config with linuxcnc it doesn´t even find the card and exits with an error that the network isn´t reachable. 
 


I tried pncconf once and only wasted time... But always when I found config similar to my needs I can change those as I want. 
This is Windows Philosophies contra Linux Philosophies...
In Linux you can do anything in terminal. You must know some magic words, but always you can find solution.
In Windows you use mouse and click on icons. You can nothing when no icons for click...
BTW. Read carefully error messages. Not always, but mostly they gives solution.
  • dm17ry
  • dm17ry's Avatar
Today 15:56

Seeking Guidance on Mitsubishi MR-J3 Serial Encoder Protocol (J-A22/J-A24) for M

Category: General LinuxCNC Questions

i believe all amps start with 0x92, then 0x7a, then you can continuously poll it with 0xa2. the answer to 0xa2 is straight-forward:
int16_t abs1 = rxbuf[5] + (rxbuf[6]<<8);
uint32_t cyc1 = rxbuf[2] + (rxbuf[3]<<8) + (rxbuf[4]<<16);
abs1 is full rotations counter, cyc if within-rotation position. afair, it is left-justified to 20 bits, so with your OBA18 encoder 2 LSBs may be always 0.
the last byte of a frame is a xor checksum, not a CRC
  • billykid
  • billykid's Avatar
Today 15:35
Replied by billykid on topic I hate the 7i97T

I hate the 7i97T

Category: Configuration Tools

Good! I need it too, I just ordered one from Europe to replace my DC servos with Sanyo RS2 ac
  • cmorley
  • cmorley
Today 15:32

Recommended way to implement spindle enable conditions?

Category: HAL

There is also:
spindle.N.inhibit - (bit, in) When this bit is TRUE, the spindle speed is set to 0.
  • cmorley
  • cmorley
Today 15:24

qtDragon: Auto Return to Manual Mode After an MDI Command so MPG works

Category: Qtvcp

Ok if you are using Master branch, I just pushed work to return to the original mode for most things I could find, probing, MDI convince buttons, etc.

Please check it out and let me know what you think or what I missed.

Chris
  • PCW
  • PCW's Avatar
Today 15:00
Replied by PCW on topic I hate the 7i97T

I hate the 7i97T

Category: Configuration Tools

Here is a sample 7I97/7I97T hal/ini configuration:

 

File Attachment:

File Name: basic7i97_...7-11.zip
File Size:4 KB


There's also an experimental pncconf version that supports the 7I97 you might try:

forum.linuxcnc.org/plasmac/55286-servo-d...ofit?start=10#331289

 
  • Aciera
  • Aciera's Avatar
Today 12:46

Very small 4 axis mill for cutting plastic materials

Category: Show Your Stuff

Yes of course, already set and configured ( i think), but a bit fuzzy on G53 vs G54 values, as i have G54 X0Y0 at the center of the C axis, but G53 are far from it.


trt-kinematics have parameters to compensate for offsets between the machine reference point and the rotation-point of the table rotary:

See for example 'xyzac-trt.ini':
# not currently supported by xyzac-trt-gui:
HALCMD = setp xyzac-trt-kins.x-rot-point 0
HALCMD = setp xyzac-trt-kins.y-rot-point 0
HALCMD = setp xyzac-trt-kins.z-rot-point 0

Note though that, as indicated, the vismach simulation does not support these.

Yup, know of any good open source one?


I do not.
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