#linuxcnc Logs

Nov 04 2021

#linuxcnc Calendar

12:00 AM CaptHindsight[m]: Tom_L: G203V Maximum Input frequency 200KHz https://www.geckodrive.com/amfile/file/download/file_id/9/product_id/9/
12:08 AM CaptHindsight[m]: so top speed will be 2.5 RPM at the jaw side of the indexer
12:08 AM CaptHindsight[m]: if you were to work with a 2 in dia cylinder the 80,000 steps/rev = 0.0000785 in per step, and at 2.5 rpm = 15.7 in/m or 0.261 in/sec
02:38 AM Deejay: moin
02:53 AM Valen is now known as dehc_Tech_01
04:47 AM Tom_L: CaptHindsight[m], he STEP input’s maximum rated frequency is 350kHz with a 50% duty-cycle waveform.
04:47 AM Tom_L: from that link
04:48 AM Tom_L: but i don't think the stepper can do that
04:49 AM Tom_L: based on what i see right now
04:51 AM Tom_L: the chart seems to say different though
05:35 AM JT-Cave: morning
07:11 AM satiowadahc[m]: Crazy that on November 4 that mother nature isn't threatening me to put on the winter tires. Had ice once but it's still +6C.
07:34 AM Tom_L: morning
07:35 AM JT-Cave: yo
07:39 AM Tom_L: JT-Cave, you gonna put a nema23 on your rotary?
07:43 AM JT-Cave: I have a spare one I think
07:43 AM JT-Cave: if not maybe a nema34
07:43 AM Tom_L: you want an iges for the base mount i did?
07:44 AM JT-Cave: yea
07:44 AM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/rotary/mount/
07:44 AM Tom_L: Rotary_Moun.igs
07:44 AM Tom_L: at the top
07:44 AM JT-Cave: thanks
07:45 AM Tom_L: holes are for 5mm screws
07:46 AM Tom_L: i ended up taking the center mount hole out maybe .002-.003 more from that
07:52 AM JT-Cave: the part that fits on the rotary?
07:52 AM Tom_L: yes
07:52 AM JT-Cave: ok
07:53 AM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/rotary/mount/Rotary_mount11.jpg
07:53 AM Tom_L: just that base
07:53 AM Tom_L: you can figure the pegs out yourself :)
07:54 AM JT-Cave: lol yep just depends on the coupling I use
07:54 AM Tom_L: after i swapped steppers, i had to clip the end of the shaft on the new one a bit. it was longer than the other one
07:55 AM Tom_L: it shouldn't take that much to turn it
07:55 AM JT-Cave: ok
07:56 AM Tom_L: if i'd have had my current limit right the first one probably would have worked fine
08:00 AM Tom_L: that circular part the mount is attached to is where you take up the backlash
08:00 AM Tom_L: there's a locking screw under it
08:02 AM JT-Cave: ok
09:55 AM aaroncnc: has any one here run probr basic before? even just to take it for a quick spin? If you have or know is the conversational screen normally have blank tabs? perimeter shows nothing
10:02 AM JT-Shop: I don't have a monitor big enough lol
10:09 AM aaroncnc: JT-Shop, i been lucky to pick up dirt cheap 22-23in 1080p screens to the point that in this room i have 4. and 2 of them touch screens. Some say i have a problem but i just cant pass up a screen for 10$ or free from the office dumpster.
10:15 AM roycroft: my primary office machine is a 27" imac, and i have an ancillary 27" 4k display on each side of it
10:16 AM roycroft: my old eyes demand huge tracts of real estate
10:16 AM aaroncnc: yea my main home pc is a 1440p 32in. i love large text.
12:15 PM Tom_L: i got a 4k i could be using but in cad the lines are too small for me to see :D
12:15 PM roycroft: that's sometimes a problem for me
12:15 PM Tom_L: however i did just get new specs so maybe i could see them now
12:16 PM roycroft: AutoCAD is fine with high resolution, but Solidworks is not - everything is way too small
12:16 PM roycroft: on my macs i can tell virtual machines to use the retina display, which gives me 5k-ish resolution, or i can tell it to use half resolution, which i do for solidworks
12:58 PM perry_j1987: is IRC dying finally? heh
12:58 PM perry_j1987: its been so quiet in here
01:09 PM Tom_L: no we're alive and well
01:10 PM Tom_L: build something so we can talk about it!
01:10 PM roycroft: i'm going to go sort out where to mount my vfd on my mill in a bit
01:11 PM roycroft: i'm not sure that counts as building something
01:11 PM roycroft: nor that it's discussion-worthy
01:11 PM roycroft: but it's not silence
01:12 PM roycroft: i also did the cad work for my gecko drive heatsink mounts last night, and as soon as my mill is functional i'll make those parts
01:48 PM roguish[m]: roycroft: wow, triple monitors?
01:48 PM roguish[m]: i've got dual 32" 4ks
02:07 PM aaroncnc: roguish[m], did you ever have issues with text at 4k? i tried a few years ago but found text was harder to read and caused eye strain.
02:12 PM CaptHindsight[m]: Tom_L: https://www.geckodrive.com/support/g203v-rev-7.html "The STEP input’s maximum rated frequency is 350kHz with a 50% duty-cycle waveform." the manual has conflicting info https://www.geckodrive.com/amfile/file/download/file_id/9/product_id/9/ says 200KHz MAX.
02:12 PM CaptHindsight[m]: so they can't get their docs right
02:13 PM aaroncnc: honestly i am more suprised when i find docs that are updated and consistent. they always seem to be an after thought.
02:15 PM * JT-Shop came home with a panel to replace the plc and wire up... get to play with my new label maker today
02:16 PM CaptHindsight[m]: requires focus and attention to detail.....oh look, a squirrel...........
02:18 PM satiowadahc[m]: Then there's beckhoff that has so much documentation it's hard to find what you need
02:20 PM CaptHindsight[m]: poorly organized
02:21 PM satiowadahc[m]: That to
02:23 PM CaptHindsight[m]: look at their shitty site https://www.geckodrive.com/g203v-digital-step-drive.html
02:23 PM CaptHindsight[m]: they have partial html docs and a pdf
02:24 PM CaptHindsight[m]: I know they try to dumb it down but then it becomes useless
02:30 PM unterhaus_: free cnc machining course from precision engineer https://www.cis.tennessee.edu/americas-cutting-edge-ace-cnc-machining-training-program
02:59 PM perry_j1987_: interested to see what fusion 360 renders glass like hmm
03:03 PM CaptHindsight[m]: shades of gray
03:07 PM perry_j1987_: *wants a new macbook pro to make this rendering go faster
03:17 PM * roycroft is pondering getting an ssd for his imac to replace the current fusion drive
03:18 PM roycroft: my mbp is older than my imac, but it's much much faster
03:18 PM roycroft: it has an ssd
03:28 PM shtumf[m]: rek007
03:57 PM rs[m]: capt_hindsight: with gecko-drive typical 10 microsteps 200kHz would amount to what? 100 rotations per second? aka 6000rpm? if you need your stepper to go 6000rpm you are doing something wrong.
04:23 PM roycroft: or very very right
04:44 PM aaroncnc: CaptHindsight[m], you running a stepper spindle?
05:01 PM CaptHindsight[m]: we don't know what his stepper motor will top out at based on its torque turning that 40:1 gear
05:01 PM CaptHindsight[m]: maybe 1k rpm
05:06 PM Tom_L: didn't get a chance to mess with it today
05:09 PM CaptHindsight[m]: 1k rpm of the stepper = 33333.3 usteps/sec
05:14 PM CaptHindsight[m]: 1k rpm with 40:1 reduction = 25 rpm
05:19 PM JT-Shop: roycroft, do you know if there is a way to get a half cut between labels
05:23 PM roycroft: when i print strips of labels it does a half cut automatically between them
05:24 PM roycroft: i don't remember if i had to configure that or not
05:24 PM roycroft: but i know it can do it
05:24 PM roycroft: and i have a meeting in 20 minutes so i have to run
05:24 PM roycroft: but i can look at my printer this evening or tomorrow
05:25 PM JT-Shop: ok thanks
05:30 PM dehc_Tech_01 is now known as Valen
05:41 PM roguish[m]: oh, joy, just paid property tax 1st half.........
05:56 PM JT-Shop: roycroft, I figured it out you need to select multiple labels
05:59 PM CaptHindsight[m]: just ran some number for the HP Binderjet printers, $300k-400k for the printer, the materials are ~$100/kg for the powders and $300/Kg for the binder, the heads only last for ~4Kg of binder and they are $850ea!
06:00 PM XXCoder: jeez
06:01 PM CaptHindsight[m]: they are 3d printers with a powder bed that use thermal inkjet heads like desktop printers only bigger
06:03 PM CaptHindsight[m]: the nylon powders are only a few $/kg in pellet form that become $100/kg as a powder
06:05 PM XXCoder: yeah if i recall right, hexa once tried to make his own powder
06:06 PM XXCoder: using rolling method with dry ice
06:06 PM XXCoder: but dunno if he ever did try it
06:07 PM XXCoder: nope havent tried it
06:07 PM CaptHindsight[m]: XXCoder: who is hexa?
06:07 PM XXCoder: guy in other channel
06:07 PM CaptHindsight[m]: reprap?
06:08 PM XXCoder: yeah
06:08 PM CaptHindsight[m]: does he know about off the shelf grinding equipment?
06:09 PM XXCoder: how expensive is those
06:09 PM CaptHindsight[m]: or was this a howto from washing machine parts?
06:11 PM Tom_L: skunkworks, what would be the best way to watch the ferror?
06:11 PM XXCoder: huh nah
06:11 PM Tom_L: i haven't used the diagnostic tools that much
06:11 PM XXCoder: he was researching on how to make powder very cheaply
06:12 PM CaptHindsight[m]: https://www.youtube.com/watch?v=e6trUtoIOZE
06:12 PM CaptHindsight[m]: why come he didn't ask me?
06:13 PM XXCoder: dunno
06:13 PM CaptHindsight[m]: cheapest low volume way is to ask someone with a cryo mill to grind it for you
06:14 PM Tom_L: that looks like that thing in the kingsman movie
06:14 PM XXCoder: interesting. sadly never saw that movie
06:15 PM Tom_L: https://m.facebook.com/Clips-dot-com-102186744781376/videos/poppy-making-mince-a-scene-from-kingsman-the-golden-circle/516381099080491/
06:17 PM XXCoder: oh boy
06:25 PM CloudEvil: CaptHindsight[m]: ln2 Is pretty damn cheap, if you could do that
06:25 PM CloudEvil: (If you can get it in bulk, compared to $100/kg
06:26 PM CloudEvil: I wonder if 60000PS jet into into argon would work.
06:38 PM CaptHindsight[m]: to get them nice and evenly round you synthesize them into spheres, so they come out of the reactor all nice and evenly round
06:39 PM CaptHindsight[m]: for many application just being small is enough and they can be out of round or jagged
06:39 PM CaptHindsight[m]: these are easily produced by cryo grinding with a hammer mill
06:40 PM CaptHindsight[m]: the same way powder coatings are produced
07:04 PM skunkworks: Tom_L: with your following error just use a halmeter - you will see it instantly.
07:05 PM skunkworks: when you think you got the accelleration set - it will probably be fine but you could check it with halscope when it gets to be small.
07:05 PM skunkworks: acc/vel
07:05 PM XXCoder: capt i wonder if nylon pebble is ultracold, would it shatter when fired towards steel wall or something
07:07 PM Tom_L: skunkworks, thanks, maybe i'll get a chance to look at it tomorrow
07:15 PM * roycroft is back from his meeting
07:16 PM roycroft: has jt been around recently?
07:17 PM XXCoder: yeah last 2 hours ago
07:17 PM roycroft: oh, right about when i left for my meeting
07:18 PM roycroft: oh well, i'll check on how i configured my label printer now, and let him know when he's around again
07:26 PM roycroft: hmm, except there was nothing to figure out
07:27 PM roycroft: i just printed a sequence of labels, and they were half cut in between each one
07:27 PM roycroft: no settings needed to do that
07:36 PM CaptHindsight[m]: XXCoder: cooled yes, but it take more than one good hit, why the hammermills wack them until small enough
07:37 PM XXCoder: ok
08:41 PM -!- #linuxcnc mode set to +v by ChanServ
09:05 PM Tom_L: skunkworks, what should i be changing to bring ferror down?
09:22 PM aaroncnc: man i am so happy scott just doubled the total amount inputs and outputs in remora. 16in and 16out.
09:40 PM Tom_L: so it seems the numbers in [DISPLAY] and [TRAJ] were limiting the velocity etc and those numbers in [JOINT] were being throttled
09:44 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/configs/NEW_MILL_SHOP_2.8.1/new_mill_A.ini
09:44 PM Tom_L: i'm not there yet but that's where i left it for tonight
09:46 PM Tom_L: but i still get ferror
09:59 PM perry_j1987_: so remora is klipper but for linuxcnc eh?
10:17 PM Bleepshop: i prescribe fire and lots of it... https://img-9gag-fun.9cache.com/photo/aVxQQzP_460swp.webp
10:27 PM Tom_L: damn that looks like my control box :)
10:43 PM roycroft: i've gotten 404 errors on multiple download attempts from thingiverse tonight
10:43 PM roycroft: is it partially broken?
10:44 PM Tom_L: don't use it
10:44 PM Tom_L: I don't use it.
10:45 PM Tom_L: i prefer grabcad
10:45 PM Tom_L: it has a more professional ring to it :)
10:45 PM roycroft: i don't use it often, but i've found some good stuff there that would take me a long time to create myself
10:45 PM roycroft: hmm, i didn't think about grabcad for this project
10:46 PM roycroft: i wonder ...
10:46 PM roycroft: no, not what i want there
10:47 PM Tom_L: somtimes you have to be inventive with your search
10:47 PM roycroft: https://www.thingiverse.com/thing:5084603
10:47 PM roycroft: that's what i really want, and it's perfect for my need
10:47 PM roycroft: but it's one of the files that gives 404 errors
10:48 PM Tom_L: the box with the watertignt connectors?
10:48 PM roycroft: yes
10:48 PM roycroft: the one thing i really dislike about those vfds is the cable entry - it's just a long slot
10:48 PM Tom_L: i think i have some of those connectors
10:48 PM roycroft: the connectors are not the part
10:48 PM Tom_L: i know
10:48 PM roycroft: it's the box that mounts to the bottom of the vfd
10:49 PM Tom_L: somebody sent me half dozen old vehicle tracking systems that were in a sealed box
10:49 PM roycroft: it would take me quite a bit of time to design a box like that
10:49 PM roycroft: i would very much prefer to just download that and print it
10:49 PM XXCoder: roy yeah if files list is long enough it loses files
10:50 PM XXCoder: which file is 404? i might be able to get it
10:51 PM roycroft: the link above is the one i really want
10:51 PM roycroft: i've had several 404s tonight
10:51 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/project_box/projectbox.jpg
10:51 PM roycroft: and one file i was able to download
10:51 PM roycroft: https://www.thingiverse.com/thing:5084603
10:51 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/project_box/projectbox_lid.jpg
10:51 PM roycroft: that's the one i really want to print
10:51 PM Tom_L: he cast those from aluminum
10:51 PM XXCoder: wow 404 on all files zip
10:53 PM roycroft: so you're not that special after all :)
10:53 PM roycroft: you get denied just like the rest of us mere mortals
10:53 PM Tom_L: you can get the individual files
10:53 PM XXCoder: reversed engineered how they generated zip url
10:53 PM Tom_L: i clicked on each one and it started to download
10:54 PM roycroft: oh, i did not know that one could do that
10:54 PM roycroft: cool
10:54 PM Tom_L: carry on...
10:54 PM roycroft: i've always just downloaded the zip file
10:54 PM Tom_L: but it's corrupt or absent!
10:54 PM XXCoder: yeah all files zip just dont exist
10:54 PM Tom_L: next best thing..
10:54 PM roycroft: i guess my thingi fu is about as bad as my google fu
10:55 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/project_box/projectbox2.jpg
10:56 PM Tom_L: that has draft angles on it though
11:01 PM roycroft: i think i even have some grey filament that's similar in color to the case on my vfd
11:03 PM Tom_L: then spray it with thinner to make it nice and shiney :)
11:04 PM Tom_L: i've heard of guys trying that but i think it weakens the plastic
11:15 PM roycroft: the grey is really light
11:15 PM roycroft: but i have royal blue, which pretty closely matches the paint that i use on my machines and machine stands
11:15 PM roycroft: and i won't be post-processing the box
11:15 PM roycroft: it's for a machine, not a piece of furniture :)
11:16 PM XXCoder: makes it look like painted wood ;)
11:16 PM XXCoder: layer lines lol
11:17 PM roycroft: i have to say, i'm really happy with how using nextcloud to sync my files has worked out
11:17 PM roycroft: the master repository is on the nas
11:17 PM roycroft: when i downloaded those files i was in my living room and downloaded them onto my macbook pro
11:18 PM roycroft: i run my slicer on my imac, so after i loaded the new filament, i just went into my office, and the files were already on my imac
11:19 PM roycroft: when it's time to print i'l probably go back to the living room and print from there
11:19 PM roycroft: i've tried several other cloud/sync apps, but nothing has worked this smoothly and easily
11:33 PM Tom_L: so in the [TRAJ] section, angular must share MAX_LINEAR_VELOCITY & ACCELERATION since they are not listed separate there
11:34 PM Tom_L: at least not in the docs
11:34 PM Tom_L: not sure where i'd look for that in code to verify it
11:37 PM Tom_L: FERROR uses MAX_VELOCITY from the [TRAJ] for it's calculation acording to the ini [JOINT] section
11:40 PM Tom_L: they really should be calculated separately