LinuxCNC HAL #6: ohmic probing & more subroutines
HTML-код
- Опубликовано: 10 июл 2024
- Upshot: who doesn't love a little probing?
Topic index:
00:00 - intro, uses for ohmic probing
01:45 - probing with computer vision and a webcam
02:21 - demo
03:27 - physical wiring
07:31 - HAL for probing
11:50 - preparing a subroutine for probing
13:44 - gcode for a probe subroutine
21:14 - cutting subroutine, passing arguments
26:05 - adding more to pyvcp
26:52 - a complex HAL example, checking your current motion mode
33:58 - where are HAL components stored? (find undocumented components)
37:06 - putting these components together
37:58 - wrap-up
Here's the webcam probing video - and he's got a follow-up now too!
• Machine vision, gauge ...
• Reverse Engineer Parts...
For gcode programming, in addition to chapter 5 in the docs, this guy has a really good tutorial. He goes by "BigJohnT" (for Thorton) on the forums, and I'm pretty sure he works for Mesa, which makes high performance I/O and driver cards for LinuxCNC.
gnipsel.com/linuxcnc/index.html
Browse the files exactly as shown in this video: github.com/swolebro/swolebro-...
Check out the latest, including my other notes and links to other people's videos and configs:
github.com/swolebro/swolebro-...
Here's the full plasma build series:
• CNC Plasma Build (Full)
Just the LinuxCNC stuff:
• LinuxCNC Guides
Help me make more cool shit:
paypal.me/swolebroshopworks 
Наука
Using as few words as possible to express my appreciation for what you are providing: Thank you VERY much !!!
Watched again... This was were you mentioned the Haimer being read by a webcam... Watched those vids too. Now I have a lot of work to do!!! I probably won't go that crazy, but the ideas are flying around my head now. Thanks again.
Yeah, Kent's project was seriously cool. Practical? Depends. Cool? Definitely.
And it is a great example of the shit you can do when you're allowed to poke at the internals of your machine.
Hey, your videos on the subject are great. I don't know why you have so little views. I will force my friends to watch it. My coworkers too.
congratulations on your very professional work, have you thought of anything in case the machine does not feel the ohmic contact with the sheet metal?
I haven't run into that problem yet, so long as the workpiece has been clean. In the situations where I've been cutting rustier materials, I've set up one of the buttons on my X-Box controller as a manual override. The probe routine also doesn't go too far past the expected 0 mark before giving up and raising an error code, just to avoid damaging anything. I'm pretty sure both of these mitigation features are in the video.
The ideal situation would be to have a sliding torch mount ("floating head") that hits a microswitch as a backup probe, or at least a breakaway mount, but I haven't gotten around to those yet. Too many projects!
Man there is a lot of typing going on lol I have my plasma table with the float switch and I want to add ohmnic touch and I was thinking of doing this but didn’t think it would involve this much configuring? I have 1 input pin open on my board would I be able to use that and some relays?
Could I have your email and I can send you my Hal and ini files and see what I need to do for mine? I can wire it or if you have a schematic for it?