THC control

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15 Dec 2010 03:47 #6052 by hominux
Replied by hominux on topic Re:THC control
Thanks a lot ! Looking for a lot but never find it !

My first impression is that, really, there are not limits on what can be done with EMC2.

I will begin to study just now .

Best regards

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19 Dec 2010 18:26 - 19 Dec 2010 18:37 #6168 by hominux
Replied by hominux on topic Re:THC control
Hello all ,
Studying C language I was writing a .comp for interface a virtual jog wheel .
It has accelerated response , if the mouse wheel is turned slowly the out will be step by step.
but if you spin fast the mouse wheel it will be cubic steps .
I found useful for my plasma table ( just X Y ) but i think it may be useful for more axis too
If someone is interested ...

Best regards
Attachments:
Last edit: 19 Dec 2010 18:37 by hominux.

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29 Nov 2011 21:09 - 29 Nov 2011 21:15 #15198 by hominux
Replied by hominux on topic Re:THC control
Hi all

I was writing a new comp for thc boxes.

FIRST OF ALL I AM NOT A PROGRAMMER
So ,please, apologize if the program has a bad style

I believe is now ready for testings ( I am using it since two mounts and look fine ...)

BUT STILL EXPERIMENTAL (off course:-)

Hoping someone will find it useful

File Attachment:

File Name: vlcdthc.gz
File Size:98 KB
Attachments:
Last edit: 29 Nov 2011 21:15 by hominux.
The following user(s) said Thank You: Paul

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20 Dec 2012 13:51 #27885 by mariusl
Replied by mariusl on topic THC control
Hi
I am looking at a number of possible THC configs and yours looks about the easiest one to implement. I see it has been some time since you posted this, is it working ok?
I will make some changes to use my own THC.

I have to ask, why are all the THC configs so complex and your look simple? Is it because you use a component?

Regards
Marius


www.bluearccnc.com

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20 Dec 2012 20:41 #27896 by hominux
Replied by hominux on topic THC control
Hello

Yes , look so simple because all the heavy stuff has been integrated in the COMP.
I was having problems to find a Gcode to set offsets , so I try to modify a thc comp for i520.
Finally I realize that was better rewrite the entire comp .
Was my firs attempt to write a realtime program and I think this can be done much better from someone with more experience in software
( I am just an harware technician learning C language).

I was implementing more and more inside the comp and at the end the comp make all the complicated job .
We are working more than year without problems , but just on one machine .

The comp is made to work with my own digital height controller but may work with others Thc boxes ,
off course you will loose the possibility to change from user interface Axis the cut voltage, but it will vork fine .
I will be more then happy to help you to test this comp on your machine.

Best regards

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20 Dec 2012 21:17 #27898 by mariusl
Replied by mariusl on topic THC control
I am glad to hear that it works well. I will make use of the comp and change it to suit my own THC setup. I will let you know how it goes and probably ask many questions along the way.

Regards
Marius


www.bluearccnc.com

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20 Dec 2012 22:00 #27903 by hominux
Replied by hominux on topic THC control
Hope your skill in C programming is better than mine ,
so we toghether can make a nice comp and manuals for this community.

Best regards

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15 Apr 2013 12:38 #32736 by mariusl
Replied by mariusl on topic THC control
I started to test my machine. Not the plasma side just yet. I made some changes to your code to work with my own setup but the bulk is still the same.
I found that the Z axis is very sluggish under manual control or jogging. Do you find the same?
What is your server thread time period set to? I think this might have an influence here.

Regards
Marius


www.bluearccnc.com

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31 May 2013 20:32 #35013 by Paul
Replied by Paul on topic Re:THC control
Roberto,

I wanted to thank you for your vlcdthc work and files. I have your setup working on my table in test mode. Thank you very much!

Paul

Hoping someone will find it useful

File Attachment:

File Name: vlcdthc.gz
File Size:98 KB

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01 Jun 2013 06:37 #35070 by tommylight
Replied by tommylight on topic Re:THC control

Hi all

I was writing a new comp for thc boxes.

FIRST OF ALL I AM NOT A PROGRAMMER
So ,please, apologize if the program has a bad style

I believe is now ready for testings ( I am using it since two mounts and look fine ...)

BUT STILL EXPERIMENTAL (off course:-)

Hoping someone will find it useful

File Attachment:

File Name: vlcdthc.gz
File Size:98 KB


Thank you for that, gave it a try today and made most of the things work just fine, but, the Zaxis is messing up badly. I removed the "voltage" pins since all i have for signals is arc_ok up down and thc enable with torch on, that is all working. The Z problem and the float switch is totally ignored as a home switch, Z moves the set distance at normal speed and as soon as it reaches the set value it speeds up immensely, giving an M3 moves the Z axes randomly again at various speeds ( mostly way beyond what machine can handle ). If i get a torch start raising and lowering the metal it moves the head just fine up and down. I did say "IF" . The Z positioning is............... never mind, will fidle some more with it soon.
Thanks again, and i will post details when and if i make it work.
Regards,
Tom

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