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I would recommend connecting the parity pin. It will give some protection if a wire breaks or a sensor fails. The carousel component understands how to interpret the parity input.

I last used Axis which had a hot key but can't find one here, as a start

Try the spindle buttons:

Has anyone tried the hal_gpio driver on Pi5? (I don't think that I have)

In theory this should work, but there may be issues with the PID "rattling" in the backlash.

If you look at the LinuxCNC config you will probably find that it already contains a PID for each axis, and all you have to do is switch the feedback to that from the stepgen calculated position to the scale measured position. Some re-tuning might be needed.

Cartesian or galvanometer?

It looks like modbus doesn't actually have the concept of negative numbers, (based on a quick web search)

If you are using a Mesa card then you could consider using mesa_modbus as that automatically re-wraps the 16 bit value into a signed value (github.com/LinuxCNC/linuxcnc/blob/master...a_modbus.c.tmpl#L773 )

Looking through the mb2hal code I don't see anything with looks to do this wrap (but it is possible that I missed it)

It's not an elegant solution, but a custom HAL component could be written to do the conversion.

linuxcnc.org/docs/stable/html/hal/comp.html

The spidev driver is not an option. The man page in the docs states that it is not suitable for real-time threads. Hence the reason you are having issues.

To put it clearly SPI, atm is not an option for the RPi5, no matter what the download page states. Mesa states that the RPi5 is unable to be used with the 7c80 & 7c81 on the respective product pages.
The Raspberry Foundation has only released limited information regarding the RP1 chip. So until this issue resolved we are stuck.
Whether a driver will be developed I can not say.
Long story short there is no help currently available.
To use the RPi5 with Linuxcnc the Ethernet port with a Mesa card would be the easiest route. The gpios may be an option but I haven’t tried it. I’m unsure if on of the Mesa PCIe cards would work, it would be an expensive experiment. A PCIe Parallel Port adapter is not an option, Jeff Gerling has tested many PCIe cards with the RPi and the arm architecture doesn’t support BAR has needed by Parallel Port cards.
It’s not just Linuxcnc that the RPi5 has been a bit of a letdown, many other people have found that many of the old libraries that use the various peripherals on the gpios don’t work until the libs have been re written and the apps & code that use them.
We just have to wait for the Code Gods to arrive.

@ XU
No double posting.
Duplicate post deleted.
Thank you.

If you look at the picture with the raspberry pi and the main board you'll actually notice that he doesn't even have that wire installed

Regarding the selection of servo motors, I would like to know if the XINJE DS5L-PTA servo driver is suitable? It supports 5v pulses to directly run the external speed mode, and can set 1000khz to reach the rated frequency without converting analog 10v. Sorry, I can't find the English manual. I can only open the Chinese web page. This is translated by Google, so it may not be expressed correctly.

you need air cylinder for open chuck
release the knife, put knife yous wrench for open chuck,

need put knife into the chuck . There is no knife inside, it can break chuck

Is not my vidéo! It was only for verify the solenoid functioning.

But I hope my turret will run like this !

I updated the links in the first posts.

Now if I can figure out how to code a plotter Flex GUI will be complete.

JT

Hi Guys,   I am using the gmoccapy screen and all seems to working okay except the router won't run. I last used Axis which had a hot key but can't find one here, as a start. I am running a Probotix Unity controller, Probotix computer and Probotix motors. Any help is greatly appreciated!