On 18/01/2017 22:10, Oliver Rew wrote:
Hi, I recently got very exciting about running my CNC from MachineKit
on a BBB, but after getting a BBB and a cape, my hopes were quickly
deflated by the lethargic performance of the GUI's on the BBB. I have
tried tkMachineKit and it is indeed faster, but is nowhere near the
convenience and speed of GMOCCAPY or AXIS running on a very old x86.
Retrofitting old CNC's is a hobby of my father and myself, and my hope
with MachineKit on BBB was for a small, simple, drop-in system that
didn't require me to search for a big and old x86 box and deal with
all it's ambiguities in order to run LinuxCNC. However, these
limitations on GUI's have dashed my hopes.
Not sure how running on a x86 can be described as full of ambiguities
compared to a BBB!
People have been doing it for years before the BBB was even made.
A BBB feels slower than running on an old x86, because it is.
I would suggest that you have a basic level rethink and look at the
available mini ITX boards available like the J1900, which are known to
work well and have 10x the processing power of a BBB, with inbuilt
graphics that work well.
Some of the fanless ones take a 12v supply and can quite easily be built
into a controller head for instance.
I have attempted to research the underlying problems with the GUI, but
these discussion quickly go beyond my knowledge. As far as I can tell,
it mostly has to do with the 3D g-code preview window and the graphics
driver behind it. Is the problem that the driver doesn't run well on
the BBB, or that any sort of 3D g-code simulation is too process
intensive for the BBB? People have said disabling the g-code
simulation does increase speed significantly, but g-code simulation is
a standard feature on most CNC softwares and is very handy for the end
user.
Are there any current, more feature-rich GUI's that work well on the
BBB? Are there any in development?
Thanks!
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website: http://www.machinekit.io blog: http://blog.machinekit.io
github: https://github.com/machinekit
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