#linuxcnc Logs

Dec 15 2022

#linuxcnc Calendar

01:53 AM Deejay: moin
02:03 AM randy: morning
02:03 AM Deejay: hey randy
02:27 AM -!- #linuxcnc mode set to +v by ChanServ
02:49 AM -!- #linuxcnc mode set to +v by ChanServ
04:01 AM mrec_: did anyone already use one of those engraving laser modules from china?
04:01 AM mrec_: seems like I also have some application for it now
04:02 AM mrec_: I could just put it on my cnc for engraving some text into wood
04:30 AM rmu: interesting https://projects-raspberry.com/raspberry-pi-pico-oscilloscope/
04:42 AM Tom_L: morning
04:42 AM travis_farmer: G'Morning
04:47 AM jpa-: mrec_: i've been interested in them but haven't figured a good way to keep my eyes safe
04:54 AM JT-Cave: morning
04:56 AM travis_farmer: i have used a Chinese laser, and they work alright. i have one for my machine, but the spindle is in the way most of the time. i have a little machine with a laser on it, but it runs GRBL, and not compatible with LCNC (maybe a future project)
04:59 AM mrec_: travis_farmer: which module do you have? and can you show some results?
04:59 AM mrec_: I just want to engrave some wood
05:01 AM travis_farmer: i don't remember the module, "Z" something, and no results to show yet. i will see if i can find the picture i have of a thing i did with my GRBL machine
05:07 AM travis_farmer: hmmm, picture seems to be missing... figures...
05:09 AM travis_farmer: my laser module is "NEJE 20W 450nm laser" (could have sworn there was a Z in the name...)
06:13 AM travis-farmer: i am really getting sick of this laptops failures... wifi keeps cutting in and out, very slow boot (bad SSD?)...
06:13 AM travis-farmer is now known as travis_farmer
06:45 AM travis_farmer: maybe Santa will bring me a different laptop... :-)
07:18 AM sensille: travis_farmer: "different" is well said. new != good
07:18 AM travis_farmer: yeah, new = $$$$
07:18 AM sensille: and most still suck
07:18 AM travis_farmer: yup
07:19 AM travis_farmer: as long as it can run CAD smoothly, i will be happy :-)
07:23 AM sensille: that's already a lot
07:24 AM sensille: but you didn't say stable wifi, good
07:24 AM travis_farmer: on Amazon, i found one with an i7 cpu and 32G ram
07:26 AM sensille: +GPU?
07:27 AM travis_farmer: A GRADE/Add Nvidia Quadro M1200 4GB
07:31 AM travis_farmer: https://www.amazon.com/Dell-Precision-7520-Windows-Renewed/dp/B09JGRPHDB/
07:35 AM travis_farmer: current GPU is a M1000 2GB
07:39 AM sensille: i have a dell precision 5530. it sucks.
07:41 AM sensille: especially for cad: an external 4k display laggs badly
07:54 AM travis_farmer: i have a "work" computer, desktop, that i plan to use for work CAD, that is better, but the convenience of a laptop is handy, so i like CAD on it as well. especially if i have to make CAD changes while mobile (or even if i am just relaxed on the couch, being a potato ;-) )
07:57 AM sensille: what do you use for CAD?
08:02 AM travis_farmer: Fusion 360, but i plan on using Vectric Vcarve Pro when i can afford it
08:28 AM JT-Shop_ is now known as JT-Shop
08:28 AM JT-Shop: nice my replacement disc is due to ship June 2023
10:25 AM zephyr9900: travis_farmer I have been thinking about your noise problem. I think what I would try is to keep the input power to the HY VFD separated from other wires, even run it in its own metalic flexible conduit and make sure the conduit is bonded to your metal control enclosure. I would also bond the VFD earth ground to the end of the conduit by the VFD.
10:25 AM zephyr9900: Some people will argue that that is not a star ground - but the object it to get the electrical noise currents to find an easy path back to the noise source. I mentioned yesterday that plywood mounting panels may not be the best but I am not necessarily saying you can't cant get by with them. Make sure the metal electrical enclosure is bonded to
10:25 AM zephyr9900: earth ground as well as the chassis of the computer. Also the brake resistor enclosure should be bonded to earth with a short wire that also connects near or at the VFD.
10:25 AM JT-Shop: yikes I have to make 3 relative moves in mm!
10:32 AM zephyr9900: travis_farmer Also I didn't see how the output wires were run from the VFD. These should be separated from other wires and the motor frame needs to be bonded to earth ground with a wire that connects back to the VFD earth ground. Many industrial drives actually use shielded cable for the drive output - but I caution about this because I don't know
10:32 AM zephyr9900: if the HY VFD manual recommends against this. The reason some drives don't want shielded output cables is because the increased capacitance is hard on the power devices. A lot of what you can or can't do in that regard also has to do with cable length.
10:38 AM solarwind: Anyone here using LinuxCNC as the controller for their 3D printer?
10:38 AM solarwind: CaptHindsight[m] you aware of anyone doing this?
10:47 AM roycroft: a former channel member has a mini mill that she controlls with linuxcnc, and she attached an extruder to it and was using it as a 3d printer
10:47 AM roycroft: i'm not aware of anyone who is currently active here who is doing so
10:53 AM Bleepshop: zephyr9900: I've got a bunch of the snap-closed ferrite rings and beads scattered through mine at all the major power/data interconnects and massive capacitors across the 12V/5V lines. Cured all my machine noise and crappy input power issues.
10:54 AM travis_farmer: zephyr9900: i hear what you are saying. my intuition is still saying that the noise is due to a failure inside the VFD. i say this, because i had it working flawlessly for years, and suddenly a few months ago, it started having communication issues, and now an almost complete failure of communications. the reason i switched from the previous RS485 USB device to what i have now is because of the communication failures, not the cause of them as
10:54 AM travis_farmer: some have suggested.
11:06 AM zephyr9900: travis_farmer OK I don't realize the part about it working in the past. If you decide to get rid of the VFD I wouldn't mind taking it off your hands for a reasonable price. I want to take it apart and reverse engineer the power stage to see if it could be controlled by the STMBL control bd.  I was actually thinking of just buying one for that
11:06 AM zephyr9900: purpose since the small ones are not really very expensive.
11:08 AM zephyr9900: Bleepshop yes Ferrites can help a lot in many situations.
11:10 AM travis_farmer: i will let you know if i get rid of it. i am thinking of grabbing some filter capacitors from my stash and adding them to the 5V power bus and see if it clears up the noise enough for it to work. then i have to be able to afford the replacement...
11:14 AM zephyr9900: travis_farmer Also maybe Im too nosy but I saw something about a DCC controller your were working on? I had made my own based on a microchip PIC controller way back in the late 90's but then gave up on the project because they were getting cheap enough to just buy. I had a working prototype that ran but I was running out of memory for all of the
11:14 AM zephyr9900: features I needed to add.
11:14 AM jpa-: i haven't read any of the past noise tracking, but in my CNC project i found it helpful to trace noise in cables with an oscilloscope and a ferrite ring - put it around whole cable, you see common mode noise, put it around single wire and you see differential mode noise
11:15 AM jpa-: due to a poorly thought out setup i had a bunch of common mode noise going through low-voltage IO cable
11:15 AM jpa-: adding separate grounding wire fixed that
11:16 AM travis_farmer: zephyr9900: check out http://dcc-ex.com/ i have helped some in the past on the project :-)
11:17 AM travis_farmer: Hmmm, i will have to try that jpa-
11:17 AM zephyr9900: jpa that is a nice idea. We used to have cores or transducers made just for that purpose that were calibrated over a wide band. The commercially available ones are pricey. But your technique sound like a good way to make relative comparisions.
11:18 AM zephyr9900: *I mean used to have them in the dev lab where I worked.
11:18 AM jpa-: travis_farmer: translated but possibly useful: https://0-jyvskyl--7wae-hacklab-fi.translate.goog/2022/02/02/yhteismuotoiset-hairiot-ja-maalenkit/?_x_tr_enc=0&_x_tr_sl=fi&_x_tr_tl=en&_x_tr_hl=fi
11:23 AM travis_farmer: jpa-: thank you, that looks very informative in my initial read. :-)
11:25 AM travis_farmer: zephyr9900: "Also maybe Im too nosy", don't be concerned about being nosy on my website. if i didn't want people to know, i wouldn't have a website ;-)
11:56 AM unterhaus: I'm hoping fedex doesn't try to deliver my package today. An inch of ice with sleet on top and now it's snowing
11:57 AM travis_farmer: hope your FedEx driver has YakTrax if he does deliver, and a plastic bag to protect your package delivery...
12:08 PM roycroft: it's cool and dry here, through the weekend
12:08 PM roycroft: next week was originally forecast to get cold, with snow later in the week, but that's just been revised
12:09 PM roycroft: now it's forecast to be fairly balmy for this time of year - highs in the mid teens - and rainy
12:09 PM roycroft: lots of rain
12:09 PM roycroft: like 16mm on wednesday
01:13 PM CaptHindsight[m]: solarwind: sounds impossible, only fools would try such a thing
01:14 PM unterhaus: Cap'n, you would never, amirite?
01:17 PM unterhaus: the additive manufacturing section of the forum is an unconvincing advocate
01:26 PM CaptHindsight[m]: you got all sorts ah stuff goinon inside, plastic stuff, hot stuff, motors and stuff
01:28 PM CaptHindsight[m]: you can't just plug all this stuff in and have it work
01:29 PM CaptHindsight[m]: https://clevercreations.org/best-3d-printer-controller-board-motherboard/ what they look like
01:38 PM roycroft: i have to go to the post office
01:38 PM roycroft: wish me luck
01:38 PM roycroft: i hope i get back before the end of the day
01:38 PM XXCoder: ouch going though warzone. good luck
01:39 PM roycroft: when i went on tuesday there was only one spot open in the parking lot
01:47 PM unterhaus: tracking of my package disappeared off the fedex site
01:47 PM unterhaus: hopefully that doesn't mean the truck slid off the road over a cliff
01:48 PM XXCoder: beamed up by aliens
01:48 PM unterhaus: over a cliff much more likely
01:48 PM unterhaus: interstates around here are closed to commercial vehicles
01:49 PM unterhaus: now I'm wondering how the truck was supposed to get here
02:30 PM * JT[m]1 uploaded an image: (226KiB) < https://libera.ems.host/_matrix/media/v3/download/matrix.org/UscgDJOAkHLfkcJVDxtTiQgX/20221215_143007_273587796330346361.jpg >
02:32 PM XXCoder: undershots?
02:33 PM XXCoder: not sure whats proper term is. being less than cut areas
02:44 PM Tom_L: warped
02:44 PM XXCoder: I would think warped would be across entire thing rather than at spots but ok
02:45 PM Tom_L: take it to jt's body shop
02:46 PM JT-Cave: got some high spots where they milled the backside
02:47 PM JT-Cave: I think I can save it and not have to wait until June for the replacement
02:47 PM XXCoder: good luck :D
03:06 PM JT-Shop: hmm lost internet in the wood shop... systemctl says no networking found...
03:06 PM roycroft: well, i survived the post office excursion
03:07 PM XXCoder: roy whew glad to see you lived though the warzone
03:07 PM Tom_L: JT-Shop, can you ping an address?
03:07 PM roycroft: what do you want me to ping?
03:08 PM roycroft: oh, somehow i conflated that request with xxcoder's response to me
03:08 PM JT-Shop: from the wood shop?
03:08 PM * roycroft should pay attention better
03:08 PM XXCoder: fun isnt it lol
03:10 PM Tom_L: yes
03:10 PM roycroft: perhaps the wood shop is saying "stay off the internet when you're working with big machines with sharp cutters"
03:11 PM Tom_L: or ssh a local address to check the wiring
03:12 PM Tom_L: rather windy here today
03:12 PM roycroft: it's calm here, and slightly overcast
03:14 PM JT-Shop: ip scan does not show it on the network and systemctl says there's no network service
03:18 PM XXCoder: ping the pc itself make sure its network services is working properly if you cant even ping your own router
03:23 PM JT-Shop: no network services on that pc at bootup it says in red failed to start network services
03:24 PM XXCoder: not sure how to solve that, but its good to know the reason now
03:25 PM XXCoder: if its linux try this
03:25 PM XXCoder: sudo /etc/init.d/networking restart
03:25 PM XXCoder: or maybe sudo systemctl restart networking depends on distro
03:26 PM JT-Shop: I'm pretty sure it's systemctl
03:26 PM JT-Shop: and like I said sudo systemctl status networking is not found
03:26 PM XXCoder: yeah thats weird
03:29 PM XXCoder: uh what thats weird irc annocment
03:29 PM XXCoder: good news sure but its not related to irc
03:30 PM roycroft: i've had discussions with the powers that be about that
03:30 PM roycroft: i think it's spam
03:30 PM roycroft: they think it's their network and they can do what they want
03:31 PM roycroft: but claim to respect my view on the situation
03:32 PM XXCoder: oh well lol
03:33 PM roycroft: fortunately they don't do it often
03:33 PM XXCoder: roycroft: seems you can set user mode -w to stop that stuff
03:41 PM unterhaus: now they closed the main highway that goes through town, good luck to everyone trying to get home
03:43 PM XXCoder: flooding or what?
03:43 PM unterhaus: ice/snow
03:44 PM XXCoder: ouch
03:44 PM unterhaus: the highway was probably for wrecks.
03:44 PM unterhaus: it's at the bottom of a hill either way
03:45 PM unterhaus: they banned empty semis last night at midnight, but truckers didn't take the hint
03:46 PM XXCoder: or missed news
03:56 PM XXCoder: lol yet another channel is moving shops
03:56 PM XXCoder: restore it
03:57 PM XXCoder: that was after they moved in that shop year or two ago
04:06 PM travis_farmer: well, today was a bad day to have a gut ache... didn't get anything done :-(
04:10 PM * JT[m]1 uploaded an image: (296KiB) < https://libera.ems.host/_matrix/media/v3/download/matrix.org/FZywchVFZudSJnucLrSBpVji/20221215_161016.jpg >
04:11 PM XXCoder: making progress egh
04:17 PM fdarling: seb_kuzminsky: in LinuxCNC, the joint's pos-cmd... is it where you are currently supposed to already be or is it where you should be by the next servo thread cycle? What about the vel-cmd? I am trying to figure out what determines following error
04:18 PM fdarling: it seemed to me like "f-error = (prev-pos-cmd - cur-pos-fb)"
04:18 PM fdarling: for digitally interfaced servo drives (like EtherCAT and such), I am trying to figure out how they are supposed to use this information to work the best
04:19 PM XXCoder: JT-Shop: any luck with networking?
04:24 PM travis_farmer: apparently not, XX ;-)
04:24 PM XXCoder: hah
04:27 PM travis_farmer: probably not the same situation, but i was having trouble with my network bridge between the house and shop. discovered my network switch out there dislikes cold. warm it up, and network worked fine. still a PITA on cold mornings...
04:28 PM XXCoder: wonder if you could get cermic heater tuned to say 40f and put it inside router
04:29 PM XXCoder: it dont have to be very hot but avoids freezing cold
04:29 PM XXCoder: it literally cant overheat so you just power it directly off psu of whatever wattage and voltage it needs
04:29 PM travis_farmer: i was thinking a cooler with a 60W lightbulb would help
04:30 PM XXCoder: that CAN overheat
04:30 PM travis_farmer: not with a thermostat made for a reptile cage... ;-)
04:30 PM XXCoder: this https://www.amazon.com/Aluminum-Heating-Thermostat-Miniature-15028-5mm/dp/B07RT5N9W9/
04:30 PM XXCoder: its 70c but you get idea on what it is
04:31 PM XXCoder: it literally uses less power as case warms up and barely uses any power above temperate its tuned at
04:31 PM travis_farmer: oh yeah, i have seen those
04:31 PM XXCoder: no smarts just power
04:34 PM XXCoder: alternate is similiar to your idea but using PID plug setup
04:37 PM travis_farmer: yeah, when i get my shop built, expecting wood dust on and in everything, i planed on the network and computer hardware going in a air filtered enclosure. would be easy to add a heater to the mix, as long as it can heat down to around -40F
04:54 PM JT-Shop2: well it's not the pc, I just booted up to a livecd
04:54 PM Tom_L: what os?
04:54 PM Tom_L: bookworm?
04:54 PM JT-Shop2: this is linux mint 19
04:54 PM Tom_L: oh
04:54 PM XXCoder: livecd networking works fine>?
04:55 PM JT-Shop2: prob debian 10 or 11
04:55 PM JT-Shop2: you see me :)
04:55 PM Tom_L: here's yer sign..
04:55 PM JT-Shop2: well back to the machine shop I have a facing op running on the manual lathe
04:55 PM JT-Shop2: yup
04:56 PM Tom_L: does that ring when turning it?
04:56 PM JT-Shop2: I've never walked away from the Samson while it's running but 15" and going 115 RPM it's a while
04:56 PM JT-Shop2: no it
04:56 PM JT-Shop2: 's pretty quiet
04:58 PM Tom_L: crap metal or ribs in the back :)
04:59 PM XXCoder: i was bored while my car was in shop si i walked to harbor freight. man that was hard walk as im still extremely weak
04:59 PM XXCoder: saw metal lathe, small one. was tempted but still no space lol
05:00 PM roycroft: i used to have the hf 7x14 lathe
05:00 PM roycroft: it wasn't a bad machine
05:01 PM roycroft: it would have been too heavy for you to carry home though :)
05:01 PM XXCoder: no shit. i have strength of wet clay
05:02 PM XXCoder: anyway car is fine, just needed new tires while I could afford it
05:02 PM travis_farmer: i have plenty of streangth, but no back to hold it anymore...
05:02 PM roycroft: i'd like to get new tires for my pickup, but that's pretty expensive
05:02 PM XXCoder: i have very bad back too, but strength is bigger problem for me
05:02 PM roycroft: and i haven't decided what kind to get anyway
05:03 PM roycroft: it has some pretty fat tires on it now
05:03 PM roycroft: 315
05:03 PM roycroft: and stock for that vehicle is, i think, 275
05:03 PM XXCoder: fun. I bet thats great for snow
05:03 PM roycroft: going back to stock would mean the turning radius would be less than a mile :)
05:04 PM roycroft: that's the thing - i want to be able to go offroad and drive through mud, but i'm not sure if wide or narrow would be best for that
05:05 PM roycroft: i need a really aggressive tread, i know, and that drives the cost of the tires up
05:05 PM XXCoder: higher rolling resistance too
05:05 PM XXCoder: saps mpg a bit
05:05 PM roycroft: yes
05:05 PM roycroft: but i drove my old pickup <500 miles/year
05:05 PM roycroft: so fuel economy is not my biggest concern
05:07 PM XXCoder: thats true
05:08 PM XXCoder: my car is at 30,000 miles since I bought it
05:08 PM XXCoder: tires was getting low, not bald yet but could slip slightly when raining. I dont care to risk my life or car so I replaced it
05:08 PM XXCoder: I suspect tires was still orginal so it would be 49,000 miles
05:08 PM travis_farmer: my '07 truck is arounf 200K miles
05:08 PM roycroft: good tires are important
05:09 PM roycroft: mine are fairly worn, but still have decent tread
05:09 PM roycroft: they're definitely street tires, though
05:09 PM roycroft: my new-to-me pickup is an '01, and it has 371 miles on it
05:09 PM roycroft: so the engine is broken in :)
05:09 PM XXCoder: glad I decided to go for my car, it was very low mileage 7 years ago at 19k
05:09 PM roycroft: 371k, rather
05:09 PM XXCoder: erm 6
05:10 PM roycroft: it had new injectors and glow plugs installed right before i bought it
05:10 PM XXCoder: nice
05:11 PM travis_farmer: Hmmm, supper has arrived. time for me to enjoy some pizza, and sign off. :-)
05:12 PM XXCoder: hey wheres my slices
05:12 PM XXCoder: dang he escaped
05:14 PM * JT[m]1 uploaded an image: (250KiB) < https://libera.ems.host/_matrix/media/v3/download/matrix.org/SZpjLKHevLIPCfTXLUcitsoi/20221215_171409.jpg >
05:14 PM XXCoder: looks like one spot is cleaned and two arent
05:15 PM JT-Shop: 3 left... but I can't cut 15" in one setup so gotta go slow
05:15 PM JT-Shop: just want to remove the high spots
05:15 PM XXCoder: shallow cuts till all gone I guess
05:16 PM JT-Shop: too late to start another cut tonight
05:16 PM JT-Shop: or good enough to use
05:17 PM XXCoder: yeah if its balanced its fine if it has bit bumps if its not stopping proper fitting
05:17 PM * JT-Shop orders a ssd to try gentoo
05:19 PM JT-Shop: damn amazon if you don't watch them the screw you
05:23 PM Tom_L: yup
05:28 PM Tom_L: what's the tan color on the disk? bondo>
05:28 PM Tom_L: ?
05:28 PM XXCoder: they dont discrete between clones and actual product
05:29 PM XXCoder: tom it looked like light cut marks to me
05:31 PM JT-Shop: bluing I somewhat wiped off
05:32 PM JT-Shop: maybe depends on which photo and what spot
05:32 PM JT-Shop: below the red line is the camera
05:36 PM Rhine_Labs: Stopped by the dumpster scored 2 2600's and a 7800 lol
05:36 PM Rhine_Labs: Under 5.00
05:36 PM * JT-Shop calls it a night
05:51 PM CaptHindsight[m]: JT-Shop: at least a few more days before the Gentoo easier installer is ready
06:43 PM Plaid1: I partially figured out a problem I was having, and I'm not sure if I feel happy or grumpy. I've been chasing down a quadature encoder error problem, so... likely bad connection somewhere. I had the brilliant idea to plug the encoder directly into my mesa card, to help me find the problem. It's not the wiring, it's something with the encoder. I now know the problem, not sure if I'm happy it's the encoder or
06:44 PM XXCoder: well knowing is a step
06:45 PM Plaid1: Now I have to find a replacement encoder....
06:45 PM XXCoder: cant check why its wonky?
06:46 PM Plaid1: I'll give it a spin, see if it's just a bad connection or something
06:46 PM XXCoder: look up if theres rebuild video for your model
06:59 PM Plaid1: Parvex RX320er1026 Don't see one
07:01 PM XXCoder: darn
07:01 PM Plaid1: I'm going to get food and then look at this problem. Problems seem to change over dinner. And I'll throw an ocilliscope at it and see if ti says anything.
07:02 PM Plaid1: It works part-time, so maybe just a bad connection
07:02 PM XXCoder: bad internal solder?
07:02 PM Plaid1: The place that has the o-scope also has a microscope, so I'll test it out and see what I can find
08:44 PM * Bleepshop waits impatiently for his 7i96s to arrive.
09:14 PM Tom_L: https://www.youtube.com/watch?v=eC-OctJoWv4
09:18 PM XXCoder: need to strighten the marker ;)
09:27 PM XXCoder: wow thats a lot of work but cheap I guess
09:35 PM Bleepshop: XXCoder: To be totally honest I'd probably just pinch one out of a Ford or Nissan starter. LOL
09:36 PM XXCoder: lol
09:37 PM Bleepshop: The drive gears for my bead roller and slip roller are starter pinions from a Cummins or Cat diesel.
09:38 PM Bleepshop: Went to the starter rebuild shop and gave them $12 for 3 nice, new, freaking huge, surplus pinions from rebuild kits.