Pathpilot plasma

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5 years 10 months ago #192451 by snowgoer540
Replied by snowgoer540 on topic Pathpilot plasma
and I'll leave the ohmic stuffs here too. Unfortunately, not using a second encoder so no commercial hypersensing... :(
Code:
######################################################################## # Ohmic touchoff input on J9-6 J9-7 # gpio 26 # Probe latch input 3 # setp hm2_[HOSTMOT2](BOARD).0.gpio.026.is_output 0 net probe2-in hm2_[HOSTMOT2](BOARD).0.gpio.026.in_not plasma-switch-debounce.2.in # Probe input goes to an and2 which disables it when the torch is on net probe2-debounced plasma-switch-debounce.2.out ohmic-touch-enable.in-00 # We route the torch-not-on signal into ohmic-debounce.0 to apply a delay to it after it turns off net torch-not-on-signal torch-not-on.out ohmic-touch-enable.in-01 ohmic-debounce.0.in net delayed-torch-not-on ohmic-debounce.0.out ohmic-touch-enable.in-03 net ohmic-touch-gui-enable ohmic-touch-enable.in-02 # Note: probe-latch input happens after the GUI disable for ohmic touch (so we can ignore it if needed) net ohmic-touch-out ohmic-touch-enable.and torch-probe-or.in1 probe-latch.in-02 ######################################################################## # Final touchoff probe hookup # OR of the ohmic touch probe and the physical switch based one net probe-input torch-probe-or.out motion.probe-input ##################################################

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5 years 10 months ago #192484 by rodw
Replied by rodw on topic Pathpilot plasma

robertspark wrote: it looked like a wider thcad (custom?) with more pins available on the wiring connectors, thanks


Actually, Robert has eagle eyes. It has 8 pins on the output side and the THCAD only has 6. I'm wondering if those extra wires are for ohmic sensing.

I think It's quite viable to use the one THCAD, for arc and ohmic sensing, particularly if you have a custom FGPA board.

Its also interesting to see they use the data structures I suggested way back in the Plasmac Development thread where I proposed a SQLlite database that allowed you to select a machine and retrieve the settings for it. Very cool.

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5 years 10 months ago - 5 years 10 months ago #192500 by snowgoer540
Replied by snowgoer540 on topic Pathpilot plasma
It appears you may be correct. Interesting.



Last edit: 5 years 10 months ago by snowgoer540. Reason: Fix pics

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5 years 10 months ago #192503 by rodw
Replied by rodw on topic Pathpilot plasma
If you trace the wire marked CAP back, that refers to the Ohmic CAP on the torch and the probe signal connects to the encoder pins that the Mesa Plasma bit file would call "encoder 2". So they can use the same board for other machines.

I wonder if their card includes the resistors we've been using? I guess they would.

I think they've quietly benefited from the open source development and put together a good package.

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5 years 10 months ago #192504 by robertspark
Replied by robertspark on topic Pathpilot plasma
those are some REALLY nice and we'll put together manuals (plasma and lathe)

just a pity the hardware is well out of my range.... but VERY nice.

finished off very nicely
The following user(s) said Thank You: rodw

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5 years 10 months ago #192505 by rodw
Replied by rodw on topic Pathpilot plasma

robertspark wrote: those are some REALLY nice and we'll put together manuals (plasma and lathe)

just a pity the hardware is well out of my range.... but VERY nice.

finished off very nicely


Yes, agree but you can have the same technology with Linuxcnc, a 7i96 or 7i76e and two THCAD's for USD $257. Surely thats in in your budget!

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