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Hi all,
I need a PCI card with parallel port for my first CNC setup. Now I find one on Amazon, the chip is Asix AX99100 chip.
Here is the link:
www.amazon.ca/StarTech-com-1-Port-Parall...1a&gad_source=1&th=1

Will this one work? Or do you guys have any recommendation? Thanks a lot.

ContinenteCNC wrote:

BX-CNC wrote:

ContinenteCNC wrote:

BX-CNC wrote:

BX-CNC wrote:

lspci -v
sudo cat /proc/ioports | grep parport
ls /dev/parport*
these commands
 
user@linuxcnc:~$ sudo cat /proc/ioports | grep parport
[sudo] password for user:
Sorry, try again.
[sudo] password for user:
user@linuxcnc:~$ ls /dev/parport*
ls: cannot access '/dev/parport*': No such file or directory

This is what i get after enter the password, nothing happen

 

 

It seems you don't have a parallel port at all.

Are you using an old computer with onboard parallel port or a new computer with PCI card?
 


and I did try using the parallel port tester but i got this
user@linuxcnc:~$ halrun -I -f ptest.hal
Could not open command file 'ptest.hal'
halcmd:


 



You have to open the Terminal Emulator in the same folder where your parallel port tester files are. For this, right click somewhere inside the folder then "Open Terminal Here".

But with USB to parallel adapter it wouldn't work in anyway. Find a good parallel port PCI card and try again. Avoid any WCH chipsets.

Hi, I find a PCI on Amazon, the chip is Asix AX99100 chip.
www.amazon.ca/StarTech-com-1-Port-Parall...1a&gad_source=1&th=1
The link is here. Will this PCI work? or do you have any recommendation? Thank you.

@IHaveNoFish,

Thanks!

Today i started investegating something new.  experimental code

The question is, can we use a clothoid curve for motion, just like the scurve is a curve used for motion?
The idea came up a while ago. Scurve motion uses derivates, the clothoid also uses derivates.

Somehow i used the clothoid curve for the velocity profile.
The theta start of the clothoid curve is a vector, this can be transformed to acceleration start and visa versa.

1. The x axis of the clothoid is then time.
2.  The y axis of the clothoid is then velocity.

During the curve's velocity profile, we printed the acceleration values along the curve. What i didn't know is,
the acceleration profile is not a straight line as like the trapezium or scurve motion profile.

Here is a plot of acceleration stage, mention the acceleration line. It's curved. This involves less Jerk?
 

Got the Mesa 7i94T and 7i77 boards powered up today, and it’s great to finally see the pins show up in LinuxCNC.


 


Also managed to remove the tool holder that had been stuck in the spindle since I got the machine — definitely satisfying to get that out of the way.I’ll shorten the IDC25 ribbon once the board layout is finalized. For now, I’ve ordered breakout boards to avoid cutting cables too early: three for the Heidenhain DB15s, two for the Indramat DB9s, and two for the IDC40 ribbons.


The original Philips 432 hardware is completely gone. I briefly considered replacing the whole cabinet to avoid upgrading the mains fuse, but in the end I’m likely going for a proper electrical upgrade: increasing the main connection from 25A to 40A and switching from a B16 to a C25 breaker (still waiting on the electrician to confirm this setup).Once the wiring takes shape, I plan to capture everything neatly in EPLAN to avoid spaghetti later on. Slowly but surely, things are coming together.