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I believe the last time I've tried one wch card, the i/o pins were disabled.

But just now I am reading how to use setpci to enable them:

tldp.org/HOWTO/Serial-HOWTO-8.html#pci_enabled
wiki.osdev.org/PCI#Command_Register

I had no idea what those flags from lspci -vv mean. Now I am starting to figure it out.

I'll give it a try. I still have some wch cards. Maybe now I can make them work (knowing what I am doing)

8A peak current.

Get one of these (or 3, considering they are essentially free):
www.aliexpress.com/item/1005005291871448.html

Pretty sure I've had the PCIe working.
The PCI one I've used with a Xilinx Parallel Port Programmer, very slow as it really needs EPP or better.

When you say you can't get the WCH to work, do you mean no signals at the pins ?

I might be able to do a quick test just with the Parallel Port tester with a breakout board connected.

Point 22 refers to eee for intel
Disable energy efficient ethernet. Add this to kernel parameters with isolcpus
igb.EEE=0

Sorry,the document is a bit haphazard as I kept adding stuff as I found it.

Thank you. I'll give this a try.
Would you consider making the corrections to the files or commenting on what things don't belong there? If not I understand. I'll let you know how this works out.

Thanks

From the ini file:should be JOINT and should be 5
and...............
Why so many
DISPLAY_JOINT = 4
DISPLAY_JOINT_NAME = A
[GEOMETRY]
AXIS_A_JOINT = 4
AXIS_A_TYPE = ROTARY
AXIS_A_LENGTH = 30
[TRAJ]
COORDINATES = X Y Y Z A
LINEAR_UNITS = inch
ANGULAR_UNITS = degree
DEFAULT_LINEAR_VELOCITY = 36
MAX_LINEAR_VELOCITY = 4.00
AXIS_A_JOINT = 4

I have no idea how this is starting, to many things that should not be there.
The ONLY things to change, after adding the 4th axis, are Display if it does not show how you want in the GUI, and TRAJ section.

unknown wrote:

The asm1083 is a PCIe to PCI bridge. The other chip would be the chip with the parallel etc functions.
Photos are ok, but the real bit of important info is the PCI ID number.

If you look at the text file I attached a couple of posts ago as well as having info regarding the parallel port cards it also has a couple of commands as where to get the info from the file system. Like what mode the card supports and stuff like that.

That's a great idea! Much more meaningful info than a screenshot.

I think we can make your file format a tempate for this topic. I will update my posts to match your idea.

By the way, how have you managed to setup these wch chipsets to work? It there some special trick? I have never been able to make them work.

tommylight wrote:

OK, thank you, i am a bit fuzzy today on everything due to lack of sleep and some other "issues".

Don't worry!

Btw, my 4 yo daughter just loves your profile picture xD

Thank you.  Here they are.

Files?

When I us the A axis jog it does move the "cone" A axis.  It only goes from 0 to -6 which looks like the settings for the Z axis in inches instead of degrees.
Getting there, appreciate your help.  Almost there.

Thanks

@DauntlessA
Its not necessary (or desirable) for the TP to command the motor. Instead, another real time component would read the heading and command the tangential knife motor. The strength of Linuxcnc is its modular design so don't break that.
When you see how fast Linuxcnc can respond and move position on a plasma cutter, I don't think it would be an issue to keep up with the knife.

Some very good ideas too. I had thought about tilting the torch as you suggest. This is simple if you take a line perpendicular to the heading (eg the line from the current position to the centre of the arc) to set torch orientation and another motor to tilt the torch your 10-15 degrees
Some of the underlying true hole technology shared with me is also built into Monokrom GUI written by James Walker (JoCo) who was the only one interested in implementing it. github.com/kcjengr/monokrom
It uses a Gcode filter to remove all holes and replaces it with our "true hole" database driven methodology
I describe the methodology here 

I think the only other pin required would be the heading from the centre of the arc to (or from) the current position.

 

Grotius, all your work on s-curve and the clothoid path smoothing is absolutely amazing, thanks so much for doing all this! Really exciting to see these features in an open-source controller.

Regarding the tangential knife angle, instead of just having the data as a hal pin, is it also possible to have the motion planner command a rotary joint/axis to complete this motion?

The problem with using the hal pin to control a rotary axis is that the motion won't be smoothly blended, and the rotary axis will have to accelerate fast to avoid significant deviation since (unless cutting a straight line), it's essentially always playing catch-up to the position where it should be.

So, to implement this, it would mean calculating the tangential knife angles when the clothoid is calculated and adding these rotary joint moves to the queue? And then when loading the motion planner, specifying which joint is to be used in this manner?

I understand this could get complicated if you do also want the rotary axis to be controllable by the operator/G-Code as well, in which case the tangential knife angle could maybe act as an incremental offset from the joint commanded position (and normally you would set the axis to 0deg to use it with the motion planner tangential knife). And as the user you'd probably define a custom M-Code to enable/disable this functionality if one isn't already implemented.

Sorry if this is a slightly messy explanation, I just thought that now was a good time to mention it while this feature is under development. And thanks again for all your work on this!

It might be working but I don't know what keys will rotate it on screen. the setup has changed what keys affect each axis.