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Aciera wrote:

(Maybe an admin could move this to the EtherCAT section)

Done.
Thank you.

Back on the 5i23 with this firmware, trying to get two stepper motors working. Using a config I adapted from sim vismach xyzbc trt, combined with the hal files from my mill which works well as a 3 axis (XYZW, W on the knee).

I have step output but no direction control for B axis, neither step nor direction for C axis. Wiring from the 7i52 is:
SSerial on COM 0
Step0 on COM 1
Dir0 on COM 2
Step1 on COM 3
Dir1 on COM 4
and an as yet unused PWM on COM 5.
One single-ended encoder for each stepper motor wired in to ENC 0 & ENC 1.

Does this look like the right wiring for getting step/dir out of the 7i52?
Brown = step0 gnd
Red = step0 +
Yellow = dir0 gnd
Orange = dir0 +
Green = step1 gnd
Blue = step1 +
Grey = dir1 gnd
Purple = dir1 +

Oscilloscope shows a nice pulse stream on the Step0 connection but nothing on the rest - there's 0v and +5v where expected (i.e. pins 0/1 and 6/7 of each block of 8) but nothing from what I think are the relevant TX pins.
The red alarm LEDs on the driver don't seem to mean anything; if I change things round so that the step0 pulsestream is sent to the C motor, that turns.

 

Tutorial 04


JT

Hi, I just installed Probe Basic and qtpyvcp development by following the guide in Probe Basic documentation "Probe Basic Development Installation" on LinuxCNC 2.9.3, Debian 12 Bookworm PREEMPT-RT ISO. I tried making changes like changing the text on buttons and the text on the status page, but after I saved the change by going to "File" and "Save" and launching LinuxCNC with the desktop launcher icons, it did not display the changes I made in QT Designer. I have tried all of the mill desktop launcher icons and made the same changes to the lathe UI with the same result.

And one more thing, can someone please point me to a guide on how to use the modified Probe Basic with normal Linux CNC (creating a .deb)? The instruction is not up on the documentation page yet. Thank you.



 

Have you checked to see if your new installation is having latency issues? Just because your PC had acceptable latency with Buster, does not mean that it will with Bookworm (at least not necessarily right out of the box). You may have to tweak some kernel parameters to improve the latency to acceptable levels.

I'm not completely familiar with how Linuxcnc EtherCAT configurations work or should be set up. But at a minimum there must be some form of feedback loop for Linuxcnc. Usually for open loop systems the stepgen sends a position feedback signal back to Linuxcnc. If that feedback signal is from an external hardware stepgen, you can get a large enough following error to set an alarm if latency causes delayed reads of the feedback, especially if following error limits are set too tight.

Did you reuse the old working machine configuration you created in Buster, or did you start over making a new config? (If you started fresh, is it possible you didn't configure something the same?)

You might need to post copies of your configuration files to get better answers.

This is a very quick self answered question but hope to help anyone who needs serial communication with gpio pins....
> Kernel
adding a new line to the endthen the port becames active( dev/ttyAMA0)

Not sure but I guess that would indicate that the drive is running its internal homing procedure but does not succeed in finishing it.

Hello. I'm using raspberry pi5 4GB with "LinuxCNC 2.9.2 Ra spberry Pi 5 OS based on Debian Bookworm ".

I have been googling but couldnt make it.

Can anyone help me for using serial port pins (GPIO14 and GPIO15) for serial communication with raspberry?

awesome to see this active again!! glad you are ok and back at it 

Tutorial 03


JT

Tutorial 02


JT

I thought I'd start a new thread for the tutorials. The play list is here .
Tutorial 01


JT

Hello, I am trying to update Qtplasma and when I update repositories I get this error:  NO_PUBKEY EF1B07FEE0EE663EEl.
Repositori
Binary deb:
Url: buildbot.linuxcnc.org
Distribution: buster
Section: master-rtpreemt.

Sources deb-src:
Url: buildbot.linuxcnc.org/
Distribution: buster
Section: master-rtpreemt.



 

Just uploaded the 3rd tutorial


JT

(Maybe an admin could move this to the EtherCAT section)