LINUX CNC First time assistance
- CrisHooker30
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11 Jun 2016 00:12 #75795
by CrisHooker30
LINUX CNC First time assistance was created by CrisHooker30
I'm using a Sony Vaio laptop with my usb connected to my g shield and Uno board. The goal is the run Linux using usb how van I do this? Does anyone use a similar setup so I can get through the configuration step / confusion?
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11 Jun 2016 09:31 #75806
by andypugh
Replied by andypugh on topic LINUX CNC First time assistance
This isn't a combination that can work.
LinuxCNC is a machine controller, and the G-shield is _also_ a machine controller. You only need one.
LinuxCNC is a machine controller that runs on PC hardware and it relies on having a real-time connection to that hardware. USB does not offer a real-time connection. This is not about data rate, the quantity of data is very small. It is about the time-accuracy of the data.
What you need is some software that can send G-code to the G-shield without interpreting it or converting it to step pulses or servo position commands. This is not something that LinuxCNC can do, nor is it something that it makes any sense to modify LinuxCNC to do.
LinuxCNC is a machine controller, and the G-shield is _also_ a machine controller. You only need one.
LinuxCNC is a machine controller that runs on PC hardware and it relies on having a real-time connection to that hardware. USB does not offer a real-time connection. This is not about data rate, the quantity of data is very small. It is about the time-accuracy of the data.
What you need is some software that can send G-code to the G-shield without interpreting it or converting it to step pulses or servo position commands. This is not something that LinuxCNC can do, nor is it something that it makes any sense to modify LinuxCNC to do.
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11 Jun 2016 12:12 #75815
by CrisHooker30
Replied by CrisHooker30 on topic LINUX CNC First time assistance
LinuxCNC + arduino
rkmiit.ru/main/all/students/educational/...uinolinuxcnc_en.html
So then I drop the g shield per these steps it says I can use my Uno . Would like some steps on using my pi but most I've found are lacking.
rkmiit.ru/main/all/students/educational/...uinolinuxcnc_en.html
So then I drop the g shield per these steps it says I can use my Uno . Would like some steps on using my pi but most I've found are lacking.
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11 Jun 2016 12:47 #75816
by cncbasher
Replied by cncbasher on topic LINUX CNC First time assistance
Linuxcnc will not work with USB ,
the website your refer is using an arduino as an add on for connection of analog inputs only
it will not work as a controller
the website your refer is using an arduino as an add on for connection of analog inputs only
it will not work as a controller
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11 Jun 2016 19:28 #75832
by andypugh
Replied by andypugh on topic LINUX CNC First time assistance
If you want to use LinuxCNC you should be able to use the gShield and potentially keep the Uno for GPIO but not step generation:
www.shapeoko.com/forum/viewtopic.php?f=3&t=3247
www.shapeoko.com/forum/viewtopic.php?f=3&t=3247
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