Another plasma component...
- thefabricator03
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15 Jul 2019 01:57 - 15 Jul 2019 01:57 #139348
by thefabricator03
Yeah its a small box that houses the ohmic sensing electronics, It is usually mounted on the Z axis.
Replied by thefabricator03 on topic Another plasma component...
Is the feather touch a separate piece of hardware?
Yeah its a small box that houses the ohmic sensing electronics, It is usually mounted on the Z axis.
Last edit: 15 Jul 2019 01:57 by thefabricator03.
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15 Jul 2019 02:00 #139349
by phillc54
Would it be possible to wire it into your current config?
Replied by phillc54 on topic Another plasma component...
Does it have a "sensitivity" adjustment?Yeah its a small box that houses the ohmic sensing electronics, It is usually mounted on the Z axis.
Would it be possible to wire it into your current config?
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15 Jul 2019 02:02 #139350
by docwelch
Replied by docwelch on topic Another plasma component...
Excellent. That's the behavior I was hoping for and what I had understood from the documentation. I think I have a pretty decent way to do this now. I'll post a link here and start a new thread on the plasmac post processor for Fusion 360 once I get a little further along. I know a lot of you are using Sheetcam and it seems to be a good product - I just have a lot of experience using Fusion 360 already (CNC routing, 3d printing) so want to stick with it if I can.
Steven
Steven
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15 Jul 2019 02:06 #139352
by rodw
Replied by rodw on topic Another plasma component...
Yes
www.candcnc.net/store-home/feather-touch-ohmic-sensor/
I think other systems have a sensitivity setting (eg a pot.) I wonder if we could use a Mesa analog input somehow as part of this?
www.candcnc.net/store-home/feather-touch-ohmic-sensor/
I think other systems have a sensitivity setting (eg a pot.) I wonder if we could use a Mesa analog input somehow as part of this?
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15 Jul 2019 02:08 #139353
by phillc54
Replied by phillc54 on topic Another plasma component...
If Fusion 360 has a tool table in text format I could have a look at adding that to the material file converter.Excellent. That's the behavior I was hoping for and what I had understood from the documentation. I think I have a pretty decent way to do this now. I'll post a link here and start a new thread on the plasmac post processor for Fusion 360 once I get a little further along. I know a lot of you are using Sheetcam and it seems to be a good product - I just have a lot of experience using Fusion 360 already (CNC routing, 3d printing) so want to stick with it if I can.
Steven
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15 Jul 2019 02:11 #139354
by phillc54
neuroncnc.com/products/004
minithc.com/pub/Ohmic_Sensor_EN.pdf
I would be wary of connecting to a analog input directly, I think it would need some sort of isolation
Maybe PCW could come up with something...
Replied by phillc54 on topic Another plasma component...
Yes, I have just seen a couple of others.Yes
www.candcnc.net/store-home/feather-touch-ohmic-sensor/
I think other systems have a sensitivity setting (eg a pot.) I wonder if we could use a Mesa analog input somehow as part of this?
neuroncnc.com/products/004
minithc.com/pub/Ohmic_Sensor_EN.pdf
I would be wary of connecting to a analog input directly, I think it would need some sort of isolation
Maybe PCW could come up with something...
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15 Jul 2019 02:43 #139361
by docwelch
Replied by docwelch on topic Another plasma component...
Phill,
It does have a tool table. I think plasmac will require something a little different but I did find this Fusion 360 tool table to LinuxCNC . I don’t have an extensive tool table built for plasma cutting at this time but I can send what I have to you for testing if you want.
Guys,
I understand the reasoning behind the material table for plasmac and its relationship to the tool table in the CAM program. Are there any situations where you change the tool/material in a single g code file?
Steven
It does have a tool table. I think plasmac will require something a little different but I did find this Fusion 360 tool table to LinuxCNC . I don’t have an extensive tool table built for plasma cutting at this time but I can send what I have to you for testing if you want.
Guys,
I understand the reasoning behind the material table for plasmac and its relationship to the tool table in the CAM program. Are there any situations where you change the tool/material in a single g code file?
Steven
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15 Jul 2019 02:49 #139362
by rodw
I think the Plasmac version of a "tool table" or materials list will be quite different to a conventional tool table for a milling machine or lathe. But if you go back to the example I posted,
Is selecting Plasmac tool #2 from the GUI list and waits for one second for plasmac acknowledged it was loaded.
Replied by rodw on topic Another plasma component...
Phill,
It does have a tool table. I think plasmac will require something a little different but I did find this Fusion 360 tool table to LinuxCNC . I don’t have an extensive tool table built for plasma cutting at this time but I can send what I have to you for testing if you want.
Guys,
I understand the reasoning behind the material table for plasmac and its relationship to the tool table in the CAM program. Are there any situations where you change the tool/material in a single g code file?
Steven
I think the Plasmac version of a "tool table" or materials list will be quite different to a conventional tool table for a milling machine or lathe. But if you go back to the example I posted,
M190 P2
M66 P3 L3 Q1 Is selecting Plasmac tool #2 from the GUI list and waits for one second for plasmac acknowledged it was loaded.
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15 Jul 2019 02:49 #139363
by phillc54
Replied by phillc54 on topic Another plasma component...
If you can send a tool table that was exported directly from Fusion360 that would be good.I don’t have an extensive tool table built for plasma cutting at this time but I can send what I have to you for testing if you want.
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- thefabricator03
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15 Jul 2019 02:50 #139364
by thefabricator03
No it does not have a adjustment pot or anything like that,
Reading through the manual for it and this stands out,
"It’s sensor input is surge and voltage protected so normal plasma start and run voltages do not effect it. It offers a fairly low
sense impedance and filtering to prevent false triggering."
So would it be possible to add a variable sense impedance and filtering circuit to our open source ohmic circuit?
Replied by thefabricator03 on topic Another plasma component...
Does it have a "sensitivity" adjustment?
Would it be possible to wire it into your current config?
No it does not have a adjustment pot or anything like that,
Reading through the manual for it and this stands out,
"It’s sensor input is surge and voltage protected so normal plasma start and run voltages do not effect it. It offers a fairly low
sense impedance and filtering to prevent false triggering."
So would it be possible to add a variable sense impedance and filtering circuit to our open source ohmic circuit?
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