LinuxCNC + Orange Pi (allwincnc)

project's repo already contains the PREEMPT_RT kernel for H5/H6 (arm64). Use the install_rt_kernel.sh to install it.

But there's no gpio/arisc support for the H6 now. And there's no arisc support for the H5 (it has some issues with arm trusted firmware using arisc's memory).

MX_master, i was try your PREEMPT_RT (arm64) kernel on H5 running fine n smooth, but doesnt work on H6. dont know why, but my h6 boot into initrams mode with your 64bit kernel

This RT kernel works fine. Just tested using Orange Pi One Plus (H6)

I made pcbs to connect op+2e to gecko G540 and breakput the io.
The early testing shows incredibly fast stepping.
>>>work in progress<<<

edit: bad url --->>>>imgbox.com/gallery/edit/zJzKHgGOz8/x1S26uJJHwXGmJx0

many thanks to mxmaster

tomp

try this url, should be public with no registration
imgbox.com/g/dcPDVr396G

Hi, MX_Master. i have questions about the ARISC driver you created.
1-I'm downloaded the Arisc driver from the address you provided, installed it, it worked on the machine without any problem. But I can see that it runs a 20 minute test program and goes back to the starting point with an error. This error is variable; +0.4 mm to -0.4 mm. There is a random shift between them. I ran a calibration test every day for 1 week. We have seen a steady random shift. The reason for this is because we are confident that the heading signal should take precedence over the Pulse signal, so the error will go away. If you can think of an add-on in your software for that matter, you are actually implementing a production unit.
We noticed that it ran the same test program at the same speed (9 meters per minute) with the
2-GPIO driver and returned to the starting point without any errors at the end of the job by running the same file 30 times and returning to the starting point without any mistakes or misses.

Your Arisc project is very good at generating fast pulses, the only thing missing is its working accuracy, which can be adapted to production. We would be grateful if you could fix this issue.

Steps loosing issue was confirmed. Need some time to fix it..

Are there any differences between OrangePi and NanaoPi? Any board that you would recommend - or avoid? (I've had RPis working with LinuxCNC, but they were not quite up to the task)

twoflowers wrote:

Are there any differences between OrangePi and NanaoPi? Any board that you would recommend - or avoid? (I've had RPis working with LinuxCNC, but they were not quite up to the task)

Try Odroid H2+

Odroid is nice, but a bit on the expansive side. OrangePi is ~ €11, that makes it quite attractive for schools.

OT: Is the "Peripheral Expansion Header (24 pins)" of the Odroid usable for 3 axis step/dir # spindle + 4xinput switch?