Choices for Controller/Breakout Boards
- Project_Hopeless
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06 Feb 2019 02:05 #125781
by Project_Hopeless
Choices for Controller/Breakout Boards was created 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.
I plan on running LinuxCNC on a PC and I have parallel and USB ports available.
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- tommylight
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06 Feb 2019 13:48 #125806
by tommylight
Replied by tommylight on topic Choices for Controller/Breakout Boards
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.
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.
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- Leon82
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06 Feb 2019 13:51 - 06 Feb 2019 13:52 #125808
by Leon82
Replied by Leon82 on topic Choices for Controller/Breakout Boards
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
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.
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06 Feb 2019 20:32 #125861
by tommylight
Replied by tommylight on topic Choices for Controller/Breakout Boards
Or 7i96, much cheaper and plenty of features.
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- Project_Hopeless
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07 Feb 2019 23:50 #125963
by Project_Hopeless
Replied by Project_Hopeless on topic Choices for Controller/Breakout Boards
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?
But it is Ethernet. Will there be any latency issues? Anything special need to happen on the PC side to the NIC?
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08 Feb 2019 01:49 - 08 Feb 2019 01:50 #125968
by Leon82
Replied by Leon82 on topic Choices for Controller/Breakout Boards
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
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.
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- PCW
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08 Feb 2019 03:47 #125974
by PCW
Replied by PCW on topic Choices for Controller/Breakout Boards
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.
external hardware for high speed tasks like step generation and
encoder counting relaxes this requirement considerably compared
to parallel port configurations.
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08 Feb 2019 23:30 #126024
by Project_Hopeless
Replied by Project_Hopeless on topic Choices for Controller/Breakout Boards
Is that what the 7i96 board does?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.
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09 Feb 2019 00:40 #126026
by PCW
Replied by PCW on topic Choices for Controller/Breakout Boards
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
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
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19 Feb 2019 21:46 #126791
by Leon82
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
Replied by Leon82 on topic Choices for Controller/Breakout Boards
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
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