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  • andypugh
  • andypugh's Avatar
04 Apr 2025 20:22
Replied by andypugh on topic Spindle control not showing in Axis window...

Spindle control not showing in Axis window...

Category: Basic Configuration

The Axis interface hides the spindle buttons if it doesn't see certain connections in the HAL file:

github.com/LinuxCNC/linuxcnc/blob/master...cripts/axis.py#L4201
  • andypugh
  • andypugh's Avatar
04 Apr 2025 19:47

Trouble probing 1Vpp signal from Heidenhain LS403 with oscilloscope

Category: Milling Machines

The 0V, 5V and 12V pins highlighted look like test points to me. I wouldn't expect them to be scattered about the board like that if they were power inputs.
  • tommylight
  • tommylight's Avatar
04 Apr 2025 19:42
  • andypugh
  • andypugh's Avatar
04 Apr 2025 19:40
Replied by andypugh on topic DRILL CYCLE G81,G83 ERRORS

DRILL CYCLE G81,G83 ERRORS

Category: G&M Codes

I think that this is probably a built-in assumption in the code.

The canned cycles really expect to be used in X and Y with Z as the drill, and that can only ever drill in the negative Z direction.

If you use this a lot then it might be worth looking at building your own "canned cycle" by using G-code remapping.

Or if you really want to distract yourself from getting the job done, you could look at fixing the source code and submitting a fix. (but discuss it first, so there is agreement on what a fix would look like)

github.com/LinuxCNC/linuxcnc/blob/master...nterp_cycles.cc#L110
  • andypugh
  • andypugh's Avatar
04 Apr 2025 19:27

New CNC machine with RS232 (plain serial) connection to PC!!!

Category: Show Your Stuff

You restrained yourself from converting it to Plasmac while they weren't looking, then?
  • andypugh
  • andypugh's Avatar
04 Apr 2025 19:24
Replied by andypugh on topic ENCODER_RATIO function implementation.

ENCODER_RATIO function implementation.

Category: General LinuxCNC Questions

Encoder_ratio is coded to count A/B phases (in software) from two encoders and to output a difference to drive a PID.
It would potentially be rather useful for a parallel port based machine, or maybe a Pi using GPIO. I expect it is fast and efficient, as it needs to do very little calculation.
But on systems where the positions are already calculated, you really can do it more simply with HAL maths functions (or the custom comp that my hobber uses)
  • andypugh
  • andypugh's Avatar
04 Apr 2025 19:18
Replied by andypugh on topic Home location on CNC Lathe

Home location on CNC Lathe

Category: Basic Configuration

To be honest, it doesn't really matter where Z home is. You can't rely on limits to avoid mashing the tool into the chuck anyway. (consider long boring bars....)
However, if you fitted a hard-stop for the tailstock, perhaps that would help with repeatability on occasions when you leave work in the machine with it powered down.
  • andypugh
  • andypugh's Avatar
04 Apr 2025 19:14

PCIe - No parport registered at "0x " . This is not Always an error.Continuing.

Category: Advanced Configuration

Maybe:
"If this message annoys you, add --nocheck to the loadrt hal_parport line"
  • cakeslob
  • cakeslob
04 Apr 2025 18:54

Remora - Rpi Software Stepping Using External Microcontroller via SPI

Category: Computers and Hardware

TMC2209 Drivers with jumpers in SPI mode


try doing it without the drivers configured in SPI, but they should also probably be configured with UART instead if they are 2209. The Remora Octopus firmware doesnt support SPI drivers anyway. If you are planning to use TMC2209 drivers, they need to be configured in the config.txt file.

how long is the cable that connects the octopus to the rpi? Also what RPi? I dont think you need to have SPI enabled in the RPi software either. Your serial output looks perfect though, but you will need to configure the TMC drives.
  • cmorley
  • cmorley
04 Apr 2025 18:44 - 05 Apr 2025 01:52
  • cmorley
  • cmorley
  • workshop54
  • workshop54
04 Apr 2025 18:25

Trouble probing 1Vpp signal from Heidenhain LS403 with oscilloscope

Category: Milling Machines

Yes, the missing power supply was the issue. I was being too careful in my attempt not to blow up the Heidehain cards, but now it works.

I have hooked up all three encoders and for the first time I can see some movement in the LinuxCNC UI.

Thanks for your help again.
  • papagno-source
  • papagno-source
04 Apr 2025 18:07 - 04 Apr 2025 18:09

Issue with OP Entry Delay and Failures in LinuxCNC + EtherCAT System

Category: EtherCAT

Hi .
I have the same problem , with message Slave did not sync after 5000 ms.

With the same hardware , with debian 10 and ethercat 1.5.2 and lcnc 2.9.0-pre run ok , without problem.

Because with Debian 12 and Ethercat 1.6 stable and 2.10.0 , on the same hardware, have problem ?

I have install Corbett procedure, step-by step . Some step not is ok ?
  • RBC
  • RBC
04 Apr 2025 17:48
DRILL CYCLE G81,G83 ERRORS was created by RBC

DRILL CYCLE G81,G83 ERRORS

Category: G&M Codes

Hi,
I have a configuration where X axis is the drill axis. 
When I run 
G19 
G0 X0.35 
G81 X-0.35 R0.1 F1 

it is accepted and runs but in reverse direction than what is needed.  
G19 
G0 X-0.35 
G81 X0.35 R-0.1 F1
It throws an error that r cannot be less than X.  In my case R-0.1 is above workpiece and x-0.35 is the start of drill, X0.35 is the end.  
Is this not supported or am I missing something. 
Best,
Rick

 
  • Boogie
  • Boogie
04 Apr 2025 17:31
Replied by Boogie on topic ENCODER_RATIO function implementation.

ENCODER_RATIO function implementation.

Category: General LinuxCNC Questions

Wasn't expect that:/ Any practical use for ENCODER_RATIO then? I believe this is the point related to is in documentation:
"
encoder-ratio.sample

Read all input pins. Must be called at twice the maximum desired count rate."

Why can't we use encoder.0.position? Or it is just the way this component is coded? Anyway why would it be a problem? Is it because of the encoder-ratio.sample call frequency required?

ZIP download was ok. Trying to wrap my head around it.
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