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Yes I believe you are.
PC → Ethernet → Orange Pi → SPI → SKR

Again, read. Through my repo. It explains everything! In depth!

Am I understanding correctly, the Pi in this project exists purely for bridging ethernet udp <-> spi?
I am always interested in new ideas. Sometimes new ideas hatch breakthroughs.

Actually this is cheaper. I already have it running on GRBLHal, and I fancied a challenge.
I have all the hardware, so buying supported/prebuilt hardware, is more expensive…
Plus, this could open up a lot of extra windows and doors!

Nonsense.
This will be not cheaper and not better than chinese 7i92 + cncshield (~60 US dollars on Aliexpress).
I have small table milling machine controlled by ESP32 + W5500 + cncshield (hal2udp project) - it is cheapest solution and work well.

Yeah I am wokring on trying to find a wiring diagram or more details on the wiring and electronic side to be able to do that. Again, I know a guy on here did something similar, but his was a bit different than mine. 

This was his post he had: www.forum.linuxcnc.org/27-driver-boards/...cix-5x10-cnc?start=0 maybe the auther,  randypetersen  could help out? 

You can not test servos and other hardware from a virtual box, but you can from a live session when booting from USB.

The idea of starting with and virtual environment is just because i still have no dedicated machine, and to not to loose time learning and testing various GUIs to see how I will be doing the workflow of the production of the pieces , configurations and other stuff which is not really related on 
testing servos and other hardware things. This will permit me to get more comfortable with the software.

Ive started a new project.

I want to control a mini 3 axis cnc ive built, with LinuxCNC. The problem I hit, i have a BTT SKR v1.4 Turbo board, a PC and an OrangePi3 LTS SBC board.

The Plan:
Install LinuxCNC Debian on the PC. Install and configure Remora on the PC. Connect to the OrangePi3 LTS through ethernet connection. This in turn, will be connected to the BTT SKR v1.4 Turbo board via SPI. The SKR board has the latest LPC1769 supported Remora firmware installed on it.

Follow this repo for my progress. Feel free to collaborate!

github.com/afaulkner420/LinuxCNC-Remora
 

Hello,
here some photos from my lathe.
   

Many people thinking "I want own cnc lathe, but will turning manually on that".
It is big mistake.
CNC is for control by g-codes, not hands.
You can use cycles (lathemacro) or simple CAM (ngcgui or ncam) for simply jobs.
On CNC mpg is only for setup and one is enought.
Of course if you want more there is no problem and you are only limited by number of available encoders inputs.

Yes, use the picture icon above. There is a size limit do I usually download pics from Google photos by right clicking on the photo rather then getting the full size photo which will be too big; 

Look for my motion.interp.* pins for tangential knives etc too
If you follow the docs, a RIP build is super easy now.

It`s possible to post photos here? Then I could show some photos of my lathe.

I've not looked at Master for some time, I'll have to check it out.

There are some Sims. I have not gone looking for docs but I think the ini files etc are well documented