Choices for Controller/Breakout Boards

More
06 Feb 2019 02:05 #125781 by Project_Hopeless
What types of controller boards does LinuxCNC work with? If it works with Mach3/4 will it work with LinuxCNC?

I plan on running LinuxCNC on a PC and I have parallel and USB ports available.

Please Log in or Create an account to join the conversation.

More
06 Feb 2019 13:48 #125806 by tommylight
Parallel port works properly.
USB will never work for actual machine control due to inherent latency problems.
There are also plenty of Mesa cards to choose from that work perfectly with Linuxcnc, and we use them to control industrial machines, but at a extremely low price for what they are capable of.

Please Log in or Create an account to join the conversation.

More
06 Feb 2019 13:51 - 06 Feb 2019 13:52 #125808 by Leon82
If you want it cheap I'm using a 20dollar breakout board. It uses parallel port.

You can turn on a spindle, have estop and 3 inputs for limit switches. And 5 axes.

On messa electronic website click on Linux CNC compatible cards. There is an Ethernet version 7i76e I think. It has many many features
Last edit: 06 Feb 2019 13:52 by Leon82.

Please Log in or Create an account to join the conversation.

More
06 Feb 2019 20:32 #125861 by tommylight
Or 7i96, much cheaper and plenty of features.
The following user(s) said Thank You: Leon82

Please Log in or Create an account to join the conversation.

More
07 Feb 2019 23:50 #125963 by Project_Hopeless
I noticed the 7i96, I'm leaning that way because of the extra I/O feature set. And I'd have one less thing to upgrade when the time comes.

But it is Ethernet. Will there be any latency issues? Anything special need to happen on the PC side to the NIC?

Please Log in or Create an account to join the conversation.

More
08 Feb 2019 01:49 - 08 Feb 2019 01:50 #125968 by Leon82
I believe it takes the latency issues out of the equation. But I could be wrong.

In mach 3 they use them(smooth stepper) a lot because I think windows can be a turd sometimes
Last edit: 08 Feb 2019 01:50 by Leon82.

Please Log in or Create an account to join the conversation.

More
08 Feb 2019 03:47 #125974 by PCW
LinuxCNC stll requires real time access to motion hardware but using
external hardware for high speed tasks like step generation and
encoder counting relaxes this requirement considerably compared
to parallel port configurations.

Please Log in or Create an account to join the conversation.

More
08 Feb 2019 23:30 #126024 by Project_Hopeless

LinuxCNC stll requires real time access to motion hardware but using
external hardware for high speed tasks like step generation and
encoder counting relaxes this requirement considerably compared
to parallel port configurations.

Is that what the 7i96 board does?

Please Log in or Create an account to join the conversation.

More
09 Feb 2019 00:40 #126026 by PCW
Yes, that's what the 7I96 does

For example step generation is done by a "digital frequency generator"
so that instead of linuxCNC generating every step, LinuxCNC just sends
a new step _rate_ command every 1 ms, and reads the accumulated
step count (and fractional step count) for feedback

Please Log in or Create an account to join the conversation.

More
19 Feb 2019 21:46 #126791 by Leon82

Or 7i96, much cheaper and plenty of features.



I just saw that one. I assumed that the e version was the only one.

They also have one that has a parallel port connector on it so you can use your existing breakout board if you want to upgrade to an Ethernet

Please Log in or Create an account to join the conversation.

Moderators: PCWjmelson
Time to create page: 0.215 seconds
Powered by Kunena Forum