Open Source Controller with internal THC

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6 years 3 weeks ago - 6 years 3 weeks ago #185222 by thefabricator03
Replied by thefabricator03 on topic Open Source Controller with internal THC
Also with your HDMI problem, why not use a HDMI over Ethernet converter, CAT6 is good for up to 50 meters. If the home cinema guys can get 4K quality out of it, it should be fine for a simple display for a machine.
Last edit: 6 years 3 weeks ago by thefabricator03.

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6 years 3 weeks ago #185225 by thefabricator03
Replied by thefabricator03 on topic Open Source Controller with internal THC
One more thing, I assume your idea is similar to what 3d printers use,a STM32 that controls everything. Have you looked at Octoprint? The main thing that makes Octoprint so successful is its ability to have all the complex calculations done on the more powerful raspberry pi and sending basic commands to the printers processor to have the actions carried out.

I personally believe that EtherCAT or something similar will become more popular in the future. With a host PC sending out command and the EtherCAT drives handling the instructions.

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6 years 3 weeks ago #185229 by rodw
I went back and read all of stivemaster's comments and I sense a bit of frustration as he looks for a cost effective CNC solution.

I too think Linuxcnc would benefit from a premade controller, particularly for plasma. But there is no ability for the linuxcnc project to do this as its 100% maintained by volunteers and has no bank account. This makes it an unusual open source project.

But its 100% open source and Mesa also follows an open source model. They even went as far to say recently

A functional THC A-D could be made for $2.00 with a
555 Timer VCO and an optoisolater.


But the problem you have is that Linuxcnc does not need a THC, it just needs to know the voltage and it can do the THC function internally and do it better than external THC ever can because it knows everything at the motion control level. Its a shame you have chosen UCNC as you will end up with an inferior system as the integration with the motion controller is just not possible in the way it can be done in Linuxcnc.

So one way forward for you would be to spend $2.00 building a THC AD-C card similar to the Mesa THCAD. You could use this with a parallel port system until you built your own FGPA similar to the Mesa 7i96 and leverage off the existing linuxcnc hostmot2 driver.
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6 years 3 weeks ago - 6 years 3 weeks ago #185246 by dvn4life1972

thefabricator03 wrote: ... why not use a HDMI over Ethernet converter, CAT6 is good for up to 50 meters...


CAT6 will work over greater distance, but at reduced performance (i.e. that of CAT5e). Either would work well and a 1000ft box of plenum-rated is inexpensive. The converter is a good idea too.

@stivemaster13 I have never understood why some folks feel the urge to go onto a decent forum and try to take a dump all over the main forum subject matter (like going to a Jeep forum and telling everyone there they should've bought a Yugo).

Linuxcnc forum is an awesome support system for the software namesake, I know if I call "support" elsewhere I won't get multiple people helping me from all over the world like they have repeatedly done for me and so many others here.

Now I may go onto another forum and tell all of them they're wrong, just to see what the thrill might be. Ok, not really...just making a point of an observation or two.
Last edit: 6 years 3 weeks ago by dvn4life1972.
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6 years 3 weeks ago #185260 by pinder
@rodw

I told you mate.
He's just want to sell those. And fruatrated to not make controllers like premade expensive stuff( though being expancive does not mean superior).

@thefabricator03
have you used octoprint?
how much faster is with new 32bit 3d printer boards. Does it have any opportunity in cnc?

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6 years 3 weeks ago - 6 years 3 weeks ago #185261 by stivemaster13
Yes, maybe you're right. Although I'm hardly the first to say - guys, if you go out of style Cosa Nostra, it will bring you success!
Regarding UCCNC, I did not choose this system, it just works. It is set in graphic mode and behaves well.
Here I do not see anyone who is able to understand that LinuxCNC like any normal CPC should be set up entirely in graphical mode or as it has recently become popular (so in professional CPCs) with parameters from 1 to as needed for example 999.

thefabricator03, I'm sorry to deviate from the topic - my goal was to find out if there is already a compiled Linux CNC for small computers with a low price - Intel X5-Z8350. Nobody answered me. There are not so ordinary such computers here .It has a built-in clock, which is perhaps better for real time.
This is also interesting but there is no clock.
If there are, I have Chinese ones, I also ordered a Mesa 7I96 and I'm thinking of trying again to release what I haven't been able to do so far.
Last edit: 6 years 3 weeks ago by stivemaster13.

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