Plasma THC

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22 Aug 2018 20:25 #116458 by snugglylovemuffin
Replied by snugglylovemuffin on topic Plasma THC
I've done everything except setup the RIP environment, I do not see an option when running linuxcnc.

How's the Plasma/Laser build coming along? I'td be really helpful to select a machine type and pinout the requisite components through the gui.

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22 Aug 2018 20:37 #116461 by snugglylovemuffin
Replied by snugglylovemuffin on topic Plasma THC
Are you suggesting that I get a Mesa THCAD instead of using the proma?

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22 Aug 2018 20:58 #116463 by snugglylovemuffin
Replied by snugglylovemuffin on topic Plasma THC
You know what, I really appreciate the number of options I apparently have at my disposal, for right now I just need the machine to work: I can play around with all the options AFTER the machine is working. For now, the simplest option appears to be THCUD. I only need help filling in some of the blanks.

For the THC.hal; I am not sure how to fill some of these out
thcud (requires a floating-point thread)
thcud.current-vel float in: Connect to motion.current-vel
thcud.requested-vel float in: Connect to motion.requested-vel
thcud.enable bit in: Enable the THC, if not enabled Z position is passed through
thcud.z-pos-in float in: Z Motor Position Command in from axis.n.motor-pos-cmd
thcud.z-pos-out float out: Z Motor Position Command Out
thcud.z-fb-out float out: Z Position Feedback to Axis
thcud.cur-offset float out: The Current Offset
thcud.vel-status bit out: When the THC thinks we are at requested speed
thcud.removing-offset bit out: Pin for testing

For the Machine HAL, where do I put these lines?
net requested-vel thcud.requested-vel <= motion.requested-vel
net current-vel thcud.current-vel <= motion.current-vel

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24 Aug 2018 02:29 #116513 by snugglylovemuffin
Replied by snugglylovemuffin on topic Plasma THC
Yo, can I get some help here? I'm reading through all the literature on what exactly these are, it's not exactly helping me implement THCUD.

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24 Aug 2018 07:06 #116515 by tommylight
Replied by tommylight on topic Plasma THC
I would but i have never used it, just had a quick look when it was released.

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24 Aug 2018 13:36 #116545 by snugglylovemuffin
Replied by snugglylovemuffin on topic Plasma THC
Okay. I've followed the instructions in the link Grotius posted for the RIP/offsets, I have not been able to find where to implement the RIP in linuxcnc.

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24 Aug 2018 14:13 #116547 by BigJohnT
Replied by BigJohnT on topic Plasma THC
A RIP is LinuxCNC that Runs In Place ie it's not installed.

JT
The following user(s) said Thank You: snugglylovemuffin

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24 Aug 2018 18:27 #116556 by snugglylovemuffin
Replied by snugglylovemuffin on topic Plasma THC
Excellent, I was able to get it going. I'm backing up the Grotius files and wiring in my components. What's the best way to approach modifying the HAL from parport to hm2_eth?

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24 Aug 2018 18:40 - 24 Aug 2018 18:43 #116558 by Grotius
Replied by Grotius on topic Plasma THC
David,

If you have a clean working mesa config for me for your Mesa ethernet card, for example done by the linuxcnc configuration wizard,
, or the provided config's by Mesa and this is working on your machine (tested), then upload your files here. I can take a look to modify it.

By working i mean, xyz axis is working and tuned. torch start commando by spindle on M3 is working. And later on you need
the thcad voltage in.

Excellent, I was able to get it going.

Was it difficult to install? If you had any difficulties, please let them know, i can react on that in the readme file.
Last edit: 24 Aug 2018 18:43 by Grotius.

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24 Aug 2018 19:29 #116560 by snugglylovemuffin
Replied by snugglylovemuffin on topic Plasma THC
@ Grotius
Sweet, thank you!

Other than installing the build dependencies taking a while, it was pretty easy; my experience with linux is very limited and I was able to get it. Decent instructions.

These files work, I can move the machine around but I'm getting errors that I believe are the soft-stops engaging, I've played with the switches and it doesn't seem to make a difference, just in case you see anything.
Attachments:

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