Planning a build
02 Sep 2016 09:25 #79895
by john_e
Planning a build was created by john_e
Hi!
This is my first post on this forum. I am planning to build an engraving machine with a circular axis.
The plan is to use a raspberry pi 3 with a buildroot system. I want to use the GPIO pins instead of a parallel port.
Does anyone know of a similar project I can look at?
Is it possible to use the GPIO? Do I have to write my own kernel modules for it to work?
Which real-time enviroment should I use? I don't think RTAI comes with buildroot by default.
Any help is appreciated.
//John
This is my first post on this forum. I am planning to build an engraving machine with a circular axis.
The plan is to use a raspberry pi 3 with a buildroot system. I want to use the GPIO pins instead of a parallel port.
Does anyone know of a similar project I can look at?
Is it possible to use the GPIO? Do I have to write my own kernel modules for it to work?
Which real-time enviroment should I use? I don't think RTAI comes with buildroot by default.
Any help is appreciated.
//John
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02 Sep 2016 10:35 #79898
by andypugh
Replied by andypugh on topic Planning a build
I don't know if RPi GPIO is usable in LinuxCNC. Software step generation is likely to be rather slow. Someone was trying to write a clocked-DMA step generator but I think he gave up.
There is s driver for one of the Mesa step-generator and GPIO boards.
linuxcnc.org/docs/devel/html/man/man9/hm2_rpspi.9.html
If you want to use the Pi then Machinekit might be a better fit.
There is s driver for one of the Mesa step-generator and GPIO boards.
linuxcnc.org/docs/devel/html/man/man9/hm2_rpspi.9.html
If you want to use the Pi then Machinekit might be a better fit.
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02 Sep 2016 10:38 #79899
by john_e
Replied by john_e on topic Planning a build
I will look into it. Thank you!
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