Why real time kernel is needed with board like MESA?

Yeah, I like it.

We are getting somewhere.

thefabricator03 wrote: My OTC Daihen robotic welder is a high end machine and it better be for 17K,

I did not know they made plasma cutters, I will look into it.

They make it too but i dont think they will invest time to improve like Hypertherm, daihen dont sell nothing for CNC plasma. Daihen made one laser weld hybrid machine to join alluminiun with steel and started sell january 2020
In Japan i think plasma is first released by panasonic and after daihen, weld first was daihen and 30 years ago was easy to adjust the 2 knobs so they made their name, now both panasonic and daihen are equal in weld. panasonic 130A is more cheap than daihen 120A.
tokiox.com/wp/%E3%83%80%E3%82%A4%E3%83%9...A5%E5%90%88/?lang=en

That's right, OTC Daihen is actually for many quality Japanese products (although this plasma, as well as their welding devices, are made in China).
The D12000 plasma is made for CNC and robots and is at, if not above, the level of Hypertherm's Powermax series. I sold mine and only then I came across a welding robot from OTC Daihen. It has a 350A source and welds perfectly. Inside, the machines look like Hypertherm - made with money!

As for the corrections - that's what I can not explain. If the FPGA is given a task for - distance (inside the FPGA are set the types of speeds G0, G1, jog and accelerations in each of them) and type of speed - then the result will be absolutely accurate performance ALWAYS. With perfect rectangular pulses with perfect acceleration accuracy and reverse acceleration, completely synchronous, no matter how many axes we are talking about - 3 axes, 5 axes or 15 axes !!!
In addition, FPGA can work with feedback check, so as not to make a mistake, even if the problem is after FPGA!

stivemaster13 wrote: That's right, OTC Daihen is actually for many quality Japanese products (although this plasma, as well as their welding devices, are made in China).
The D12000 plasma is made for CNC and robots and is at, if not above, the level of Hypertherm's Powermax series. I sold mine and only then I came across a welding robot from OTC Daihen. It has a 350A source and welds perfectly. Inside, the machines look like Hypertherm - made with money!

As for the corrections - that's what I can not explain. If the FPGA is given a task for - distance (inside the FPGA are set the types of speeds G0, G1, jog and accelerations in each of them) and type of speed - then the result will be absolutely accurate performance ALWAYS. With perfect rectangular pulses with perfect acceleration accuracy and reverse acceleration, completely synchronous, no matter how many axes we are talking about - 3 axes, 5 axes or 15 axes !!!
In addition, FPGA can work with feedback check, so as not to make a mistake, even if the problem is after FPGA!

Question for stivemaster13

Do you have problems installing kernel?

I'm just clarifying things (upto a level i know).

You dont have to RT kernel install it seprately. It is included in latest iso. Downloads page clearly explain which iso to download.

Pc's other than power saving features are generally good for good latency ( I can be wrong)

Thankyou all for valuable information.

Programming new modules to fpga is not an easy work.
most people here are already doing best. What problem do you have with real-time kernel? achieving different results is a different matter.

I know FPGA can give good result. But programing them (I think) is a whole new world. Many new contributors are needed for that work.


I also propose for the sake of community that we should hire new good programmers full time. We should also find ways to pay those new and old programmers. Stivemaster13 is right at some points, that a little new effort is needed for the betterment of Linuxcnc. I have profitted from linuxcnc a lot. PlasmaC only open new doors for me. I should not hesitate from donating for this noble cause.

I am not, in any way, indicating that it is not good at this stage. Every opensource project need money to sustain in long term.

pinder wrote: Every opensource project need money to sustain in long term.

Agreed. Thats the problem for Linuxcnc and what is holding it back. Every other open source program I use has a commercial arm or sponsor somewhere. In fact, I pay for the corporate version of some. Linuxcnc has no structure like that and have no way of even banking a donation let alone knowing what to do with it.

But then we come back to the FGPA idea. Maybe that could become a breadwinner but I fail to see any value in that unless it was a Mesa like system. Linuxcnc's biggest hidden secret is the ability to write custom components. Today I started writing a simple component to manage stepper drivers with a boost signal. So when a drive is at rest or at constant velocity, the current will be automatically reduced so drives will run cooler but still have awesome torque when its needed. Its features like that that can't easilly be built into a FGPA. I really think stivemaster1 should take the time to understand the linuxcnc paradigm. With his knowledge, he could do wonderful things with plasma on a real time linuxcnc platform that competes with the Hypertherm controllers where plasma control is embedded in the motion controller. I'm sure they are not using a FGPA, all the data is on a CANBUS or similar ethernet network so its trivial for them to manage their machines across an Ethernet network.