#linuxcnc Logs

Aug 10 2022

#linuxcnc Calendar

12:01 AM CaptHindsight[m]: what I don't get is how they work with open torches all day without a fire extinguisher near and no E-stop for the gas supplies
12:09 AM XXCoder: danger
12:09 AM CaptHindsight[m]: I guess you can't be too stupid and a glassblower
12:09 AM roycroft: chicago has a history of burning down
12:09 AM roycroft: so if they screw up the results won't be unprecedented
12:09 AM CaptHindsight[m]: well it was the cows
12:09 AM roycroft: ALLEGEDLY
12:09 AM CaptHindsight[m]: once they trained the cows it stopped burning as much
12:09 AM roycroft: i think mrs. o'leary would beg to differ on that
12:09 AM XXCoder: city was much less wooden also
12:09 AM CaptHindsight[m]: yeah that didn't help
12:09 AM XXCoder: so it was win-win, trained cows in less wood areas
12:09 AM CaptHindsight[m]: the city cows were moved to brick or stone houses
12:11 AM CaptHindsight[m]: XXCoder: also different culture, it's not a taboo
12:11 AM CaptHindsight[m]: US has that puritanical history
12:11 AM XXCoder: of course
12:12 AM XXCoder: and indeed cultural difference may be why, rather than such laws
12:12 AM CaptHindsight[m]: sex, tobacco, alcohol, fun etc :)
12:12 AM mrec: I once lived on the countryside in Germany... I couldn't stand this life
12:12 AM mrec: but that was only for 6 months.
12:13 AM mrec: you either adapt or you're lost there for your entire life.
12:13 AM mrec: larger cities are okay as usual you have the good, bad and ugly all together like everywhere.
12:14 AM roycroft: so they're about to announce the winner
12:14 AM roycroft: and i'm rooting for both of the contestants
12:14 AM roycroft: i guess that's good
12:14 AM XXCoder: that means they rocked it well
12:15 AM CaptHindsight[m]: mrec: I moved to from inner city to very rural
12:15 AM roycroft: the judge from the corning glass institute said "i don't under the concept of a winner - with art, winning means you get to make art the next day"
12:15 AM CaptHindsight[m]: yeah it's an adjustment
12:16 AM CaptHindsight[m]: I didn't mind as much when I traveled half the time to very large cities
12:16 AM mrec: rural close to a city should be okay but pure countryside I don't like it.
12:16 AM CaptHindsight[m]: but covid lockdown out here was miserable
12:16 AM mrec: Taiwan is perfect for me, even the countryside could be compared with a city in Europe ...
12:17 AM roycroft: the new season of forged in fire is the other netflix series i'm watching currently
12:17 AM CaptHindsight[m]: yes, taiwan is very nice
12:17 AM roycroft: two hot art forms
12:17 AM CaptHindsight[m]: I hope it stays that way
12:18 AM CaptHindsight[m]: I used to tell people that more people live in the building of the person I was just on the phone with than the entire county were are in
12:18 AM mrec: most important is the infrastructure.. 7eleven and you can just go and buy whatever you need whenever you want
12:19 AM mrec: delivery services are quick and cheap all over the island (and shipping from china .. sometimes just takes like 3 days and costs like 5-6$)
12:19 AM CaptHindsight[m]: i have pics in Hong Kong of being in front of one 7-11 and seeing the other just a few doors down :)
12:20 AM mrec: 7-eleven is everywhere, people also pay their utility bills there.
12:20 AM mrec: it's very convenient and 24/7
12:20 AM * roycroft pays his utility bills in his office
12:21 AM CaptHindsight[m]: mrec: also your street food
12:21 AM mrec: I order some stainless.. they'll put it to 7eleven for pickup
12:21 AM CaptHindsight[m]: night markets
12:21 AM mrec: we have Ama :D
12:21 AM mrec: Ama = grandma
12:21 AM mrec: she's cooking every day
12:22 AM roycroft: i cannot remember the last time i was in a 7-11
12:22 AM CaptHindsight[m]: mrec: not to get into politics but how did that trip there by Pelosi go?
12:22 AM CaptHindsight[m]: from your perspective
12:22 AM roycroft: maybe 30-35 years ago?
12:22 AM roycroft: i'm not a slurpee guy, i guess
12:22 AM mrec: I think it was not necessary to provoke china, it was just 1-2 days. On the other side everyone knows what china is doing now and can prepare better for it
12:23 AM roycroft: if $formerpresident wins in 2024 he might open an embassy in taipei
12:23 AM CaptHindsight[m]: roycroft: 7-11's in Japan, Korea, Taiwan have actual food
12:23 AM roycroft: and then complain when the war starts
12:23 AM mrec: doing those military excercises is easy as long as no one is shooting back... makes someone feel strong I guess but the reality is different when rockets are coming back.
12:23 AM roycroft: and blame hillary clinton
12:24 AM mrec: I feel like the food at 7-11 is relatively expensive but you get some good quality
12:24 AM mrec: street food is cheap on the other side
12:25 AM CaptHindsight[m]: mrec: yeah real tough, I think it make China look childish having a tantrum like a toddler
12:25 AM mrec: and 7-11 also warms it up so you can have warm food whenever you want
12:25 AM roycroft: china had to do that
12:25 AM CaptHindsight[m]: wah wah wah, lets shoot some missles
12:25 AM roycroft: it's the only way their government can claim to be legitimate
12:26 AM roycroft: since they don't have free elections and an opposition party
12:26 AM CaptHindsight[m]: control freak power hungry ass hats
12:27 AM CaptHindsight[m]: they pulled China out of poverty and now they have to lie to everyone to keep them inside the bubble
12:27 AM CaptHindsight[m]: I'll tell you what to think
12:27 AM CaptHindsight[m]: don't believe your lying eyes
12:28 AM mrec: I just read about the new recycling rules in Europe from 1.7.2022; eg. before Amazon has paid fees because they have used their own packaging, now in Europe they want to charge every single reseller and amazon has to report the packaging material to their customers.
12:28 AM mrec: I think Europe is doing terribly and is going fully down and if they continue that way they will be 100% irrelevant in the world
12:29 AM mrec: instead of making life easier they do 100% the opposite
12:29 AM CaptHindsight[m]: and really dumb for trusting Russia for near 30 years
12:29 AM CaptHindsight[m]: they are dealing with similar corruption and stupid as the USA
12:30 AM CaptHindsight[m]: fascism trying to make a comeback
12:30 AM CaptHindsight[m]: erase history
12:30 AM mrec: as an importer you should register in every single country in Europe instead of having one central registration
12:30 AM mrec: they're absolutely done in Europe pushing more and more manufacturing out of the country
12:30 AM CaptHindsight[m]: yes, more foolishness
12:31 AM mrec: some large companies will remain but they usually buy small innovative businesses, however it'S more and more difficult for small innovative businesses
12:31 AM mrec: now if they go to other countries they will have a whole set of better regulations and rules (outside of Europe)
12:31 AM CaptHindsight[m]: lots of short term thinking
12:31 AM CaptHindsight[m]: short term plans
12:31 AM mrec: in Germany you cannot just put a CNC into your garage that's officially not allowed as far as I know.
12:32 AM CaptHindsight[m]: no regard for what will happen in the coming decades
12:32 AM CaptHindsight[m]: ask Loet
12:32 AM mrec: you're abusing the official use of a Garage when making a lab out of it
12:34 AM CaptHindsight[m]: the USA is similar
12:34 AM CaptHindsight[m]: zoning
12:34 AM roycroft: except in texas :)
12:35 AM mrec: here in Taiwan... a neighbour just occupied some free space put a tent outside and opened a one man restaurant
12:35 AM CaptHindsight[m]: Chicago has done a marvelous job of keeping business out of residential
12:36 AM roycroft: i have no problem with good, equitable zoning lawas
12:36 AM roycroft: laws
12:36 AM mrec: little bit higher standard than those food stands and he sells japanese food
12:36 AM CaptHindsight[m]: I find it interesting when in other US cities to see bars, restaurants, barber shops in residential areas
12:38 AM CaptHindsight[m]: mrec: a restaurant here requires a bunch of permits and licenses
12:38 AM CaptHindsight[m]: sanitation, zoning, business etc
12:38 AM mrec: yes same in Germany
12:39 AM CaptHindsight[m]: in the past 10-20 years we have "food trucks"
12:39 AM mrec: as usual I'm always for the middle way... Germany vs Taiwan would be 2 extremes. Taiwan too less, Germany too much
12:39 AM CaptHindsight[m]: many towns just didn't know what to do with them other than ban them
12:40 AM roycroft: you know, i'm not a fan of hillary clinton, but i was disappointed when she lost
12:40 AM roycroft: the right promised that there would be taco carts on every street corner if she won
12:40 AM roycroft: and look where we are
12:40 AM roycroft: she lost
12:41 AM CaptHindsight[m]: roycroft: sure, look at the complete mess that happened
12:41 AM XXCoder: no tacos
12:41 AM mrec: no taco carts?
12:41 AM roycroft: and there are no taco carts near me
12:41 AM mrec: haha
12:41 AM roycroft: i have to get in my car and drive to get to a taco cart
12:42 AM mrec: by the way, did anyone try those cheap chinese reamers?
12:42 AM CaptHindsight[m]: uhmerican taliban, post modern nazis
12:42 AM mrec: I have high quality japanese ones where one reamer costs like 2 times as much as a set of chinese cheap hss reamers
12:42 AM CaptHindsight[m]: mrec: have a pic?
12:43 AM roycroft: i don't care about those labels
12:43 AM roycroft: i just want my corner taco cart
12:43 AM XXCoder: mrec: can you be sure its not butteralloy
12:43 AM CaptHindsight[m]: roycroft: i want home delivery of Tacos
12:43 AM roycroft: i don't want that
12:43 AM roycroft: i feel it's good to walk down to the corner to get my tacos
12:43 AM mrec: https://www.aliexpress.com/item/4000149016033.html
12:43 AM CaptHindsight[m]: pedal up to my, created fresh and hot
12:44 AM XXCoder: wow those is short for reamer
12:44 AM mrec: one japanese 5mm reamer costs like 30$
12:44 AM CaptHindsight[m]: burrito by canon could be fun
12:44 AM CaptHindsight[m]: fired hot and fresh from the curb to you
12:44 AM XXCoder: just open mouth and done eating
12:45 AM CaptHindsight[m]: even dropped from a drone, don't look up
12:45 AM mrec: the japanese reamers have a similar size but have a spiral cut
12:45 AM roycroft: all this delivery stuff doesn't help our obesity problem
12:46 AM roycroft: having to walk to the corner to get your taco is at least a little bit of exercise
12:46 AM CaptHindsight[m]: nope
12:46 AM CaptHindsight[m]: not a concern
12:46 AM CaptHindsight[m]: filled full of near food ingredients
12:47 AM XXCoder: foodlike substances
12:47 AM roycroft: president biden signed the chips act today
12:47 AM XXCoder: hope that will boost jobs
12:47 AM roycroft: so yay to maybe making stuff here again
12:47 AM CaptHindsight[m]: have you seen the prices of what they call healthy meals delivered?
12:47 AM XXCoder: as well as finally cheap rpi4 and MESAs
12:47 AM XXCoder: capt if it has word "healthy" they add a zero to price
12:47 AM roycroft: i don't think chips will be cheaper made in usa
12:48 AM roycroft: but they'll at least be available
12:48 AM XXCoder: its expensive word
12:48 AM CaptHindsight[m]: I have to read what actually passed
12:48 AM roycroft: and it will be the us government installing the spyware in them, not the prc government
12:48 AM CaptHindsight[m]: was already a mess with intel having their grubby mitts on it
12:49 AM CaptHindsight[m]: give funds to fabs that actually make good parts
12:49 AM CaptHindsight[m]: vs shore up crappy ones
12:49 AM CaptHindsight[m]: but politics
12:50 AM CaptHindsight[m]: well the USA is not a meritocracy
12:50 AM roycroft: we should be
12:50 AM XXCoder: sometimes word "politicized" should have definition of "to turn crappy"
12:50 AM roycroft: but corporate welfare is more fun for the politicians
12:51 AM CaptHindsight[m]: unfortunately XXCoder
12:52 AM CaptHindsight[m]: kind of sad with 350 million uhmericans and this is who we get to vote for
12:52 AM roycroft: my cat's name is phoebe
12:53 AM CaptHindsight[m]: there should be too many good ones that you can't decide
12:53 AM roycroft: i think we should vote for phoebe for president
12:53 AM roycroft: she would do a better job that what we've had lately
12:53 AM XXCoder: CaptHindsight[m]: "did not vote" have been true winner of president for quite a bunch times. nonconsutuinally way more than 2 terms
12:53 AM roycroft: as long as we feed her geenies and give her catnip toys
12:53 AM CaptHindsight[m]: I'm waiting to see if there is any justice for the great pumpkin
12:54 AM roycroft: there had better be
12:54 AM roycroft: if the doj don't charge him with anything then that fbi raid yesterday is a guarantee that he'll be the next president
12:54 AM CaptHindsight[m]: we lost so much credibility with Bush/Cheney
12:55 AM roycroft: whom i would have back in a heartbeat compared to #45 again
12:55 AM XXCoder: only bush I trust is my own
12:56 AM mrec: I would like to use my de2-115 devboard with linuxcnc but I guess there's quite some way to go before I can do so
12:56 AM CaptHindsight[m]: poop with nuts vs regular plain poop
12:56 AM roycroft: bring me a shrubbery
12:56 AM CaptHindsight[m]: https://www.terasic.com.tw/cgi-bin/page/archive.pl?Language=English&No=502
12:57 AM CaptHindsight[m]: mrec: port the Mesa VHDL to it?
12:59 AM mrec: do you have any experience with the mesa vhdl description?
12:59 AM CaptHindsight[m]: so which tech will vastly improve in the next 10 years? like smartphones have in the past 10
12:59 AM roycroft: well all the servers and vms are back online
12:59 AM mrec: I have some vhdl knowledge I just wonder how much time it would take.
01:00 AM CaptHindsight[m]: mrec: I have used it with other Xilinx tools and devices
01:00 AM mrec: CaptHindsight[m]: which one did you port?
01:00 AM mrec: I'd be interested in the ethernet version of it but that seems to be a bit more effort
01:01 AM mrec: since I'd need to pick up the data and connect it through nios
01:01 AM CaptHindsight[m]: I used Vivado with a zedboard (hard arm core inside fpga)
01:02 AM mrec: how long did it take you?
01:02 AM CaptHindsight[m]: I just ran the smulations
01:02 AM CaptHindsight[m]: the VHDL dropped right in
01:02 AM CaptHindsight[m]: spent more time setting up the tools
01:03 AM CaptHindsight[m]: took a day to download and install
01:03 AM CaptHindsight[m]: few hours to setup
01:03 AM mrec: the tools are set up here already, I'm doing quite a bit vhdl here.
01:03 AM mrec: seems like I should give it a try
01:03 AM CaptHindsight[m]: then i got busy with mechanical hardware again
01:04 AM CaptHindsight[m]: i haven't had time to even update my websites
01:04 AM mrec: I'm currently bypassing the parallel port pin limitations with a microcontroller attached via USB (just for the non critical non realtime stuff, eg. switches)
01:04 AM mrec: but having everything on the fpga would be nice
01:05 AM CaptHindsight[m]: https://liliputing.com/rock5-single-board-computer-with-rk3588-coming-soon-for-129-and-up-or-45-off-for-pre-orders/
01:05 AM CaptHindsight[m]: I'd like to port remora or orange cnc to this
01:06 AM CaptHindsight[m]: has 3 integrated microcontrollers
01:06 AM CaptHindsight[m]: i think cortex M0
01:06 AM CaptHindsight[m]: almost in stock
01:07 AM CaptHindsight[m]: but now i have to write g-code routines for controlling glassworking CNC tools
01:08 AM CaptHindsight[m]: that also sense temperature and pressure
01:08 AM CaptHindsight[m]: machine vision for alignment and QC
01:09 AM CaptHindsight[m]: and then get back on 5+axis CAM
01:10 AM CaptHindsight[m]: and also launch a few other products, mostly additive manufacturing tech and printers
01:10 AM mrec: https://youtu.be/Q0MKbsJ36-o?t=3924 a perfect restauration :D including chuck painting
01:10 AM CaptHindsight[m]: other than that I'm not too busy
01:10 AM mrec: the fun starts at 1:06
01:10 AM mrec: 1:06:30
01:11 AM CaptHindsight[m]: mrec: do you use local made machines?
01:11 AM mrec: I only converted some chinese machines so far, not sure where I will go next (basically I'm just doing that CNC part to make a pick and place machine plus feeders)
01:12 AM CaptHindsight[m]: I'm looking for small headstocks
01:12 AM CaptHindsight[m]: they just need good bearings
01:12 AM mrec: now I only need some plastic gears which I will cut today, after that only some springs are missing and my 8mm feeders should be ready.
01:12 AM CaptHindsight[m]: they won't see much load, just lots of spinning
01:13 AM CaptHindsight[m]: mrec: cartesian system or?
01:13 AM mrec: yes cartesian system
01:13 AM mrec: I wrote the software for it a few years ago for a commercial pick and place machine that I have reverse engineered.
01:14 AM CaptHindsight[m]: there were some openpnp projects but they used *duinos, rpis and grbl
01:14 AM mrec: yes but I'm not using openpnp, I have my own software
01:14 AM CaptHindsight[m]: yeah was crappy
01:24 AM CaptHindsight[m]: and they could not build a decent robot
01:24 AM mrec: a pick and place machine is fairly easy I feel because you can use many standard parts
01:24 AM CaptHindsight[m]: if they were not such dicks maybe someone could have helped them
01:24 AM mrec: but feeders need to be small, basically every part is a special item
01:24 AM CaptHindsight[m]: yeah part grippers take some finesse
01:24 AM CaptHindsight[m]: same for glass
01:24 AM CaptHindsight[m]: slippery and breaks easily compared to metals or plastics
01:25 AM CaptHindsight[m]: I'll ask a live one next i see one
01:30 AM CaptHindsight[m]: gecko feet
01:31 AM CaptHindsight[m]: https://i.natgeofe.com/n/4e9c05b7-545c-4054-ab81-3be04e099a43/Gecko_foot_square.jpg
01:32 AM CaptHindsight[m]: great for parts handling / moving
01:42 AM -!- #linuxcnc mode set to +v by ChanServ
01:44 AM randy: morning
02:54 AM CaptHindsight[m]: shhhsshh
04:35 AM Tom_L: morning
04:37 AM JT-Cave: morning
04:55 AM travis_farmer: good morning :) i started work on my CNC shed yesterday, by setting one 18" cement pad, and promptly hurt my back... didn't realize they weighed 130 pounds. thought maybe just 60 - 70 pounds...
05:19 AM JT-Cave: raised floor?
05:26 AM perry_j1987: morning
05:41 AM travis_farmer: yes, JT-Cave, i am building a raised floor. a concrete floor was beyond my budget, and a ground-level wood framed floor would rot out due to ground moisture not escaping. so i am raising it only enough to allow ventilation air flow, so like 6 inches minimum.
06:37 AM JT-Cave: looks like we got 1/4" of rain last night so no lumberjacking going on today
07:33 AM JT-Cave: https://forum.linuxcnc.org/27-driver-boards/46614-mesa-confguration-tool-update
08:17 AM JT-Cave: gotta love getting emails like this... what's the deal with these cards they have been out of stock for like forever
08:17 AM JT-Cave: when do you anticipate getting stock on them?
08:18 AM JT-Cave: my reply was the deal is a global chip shortage, as soon as that is over with I will have cards in stock
08:21 AM andypugh: Maybe point out that the manufacturer literally canโ€™t make the cards.
08:22 AM andypugh: And: https://hackaday.com/2022/07/05/companies-rumored-to-harvest-washing-machines-for-ics/
08:28 AM JT-Cave: I did mention when auto dealer lots are full of new cars my shelves will be full of cards
08:32 AM JT-Cave: I still don't know why there is a chip shortage? did the chip factories fall into a sinkhole? did the earth run out of raw materials?
08:34 AM pcw-home: Supply and demand, plus dis-investing in low profit commodity process fabs
08:38 AM JT-Cave: interesting
08:38 AM JT-Cave: what is a commodity process fabs?
08:39 AM pcw-home: Low tech say 28 nm and larger fabs
08:40 AM JT-Cave: https://www.theregister.com/2022/02/04/semiconductor_supply_28nm/
08:40 AM andypugh: I suspect it hasnโ€™t hurt the profits of the fabs at all, so they have little incentive to reinvest.
08:42 AM pcw-home: Yep, most semi company profits are way up
09:04 AM pcw-home: The spartan 6 supply issue is largely because Samsung closed their 45 nm fab
09:35 AM c101horse[m]: anyone know where i could get a mt3 3/4 collet with a 12mm thread instead of a 3/8-16
09:35 AM Birdman3131[m]1: Im pretty sure they also expected the shortage to go away before the 18 months I have heard quoted to build a new fab.
09:37 AM ZincBoy[CAON][m]: 18 months is awfully optimistic to build a new fab. If you don't count the 2+ years of planning, maybe.
09:46 AM Birdman3131[m]1: And if you assume an influx of demand will go away before its built why bother building?
09:46 AM roycroft: when hynix built their fab plant here in eugene there was several years of planning, lobbying the city for tax breaks, etc. before they started building it
09:47 AM travis_farmer: there, got half the cement pads for my CNC shed planted. :-D oh, to be young again...
09:47 AM roycroft: then it took another five years to build the plant
09:47 AM roycroft: they operated it for maybe five years before the shut it down, renegging on all their promises to the city
09:48 AM roycroft: and even while it was operating they never employed as many people as they promised
09:48 AM JT-Cave: True is building a huge commercial/industrial refrigeration plant here
09:50 AM * JT-Cave goes to deliver the rooster to my friend that lost her rooster to a dog
09:57 AM roycroft: my grey filament is finally out for delivery
09:57 AM roycroft: so i should be done with that part of the project by tomorrow afternoon
11:36 AM JT-Cave: pcw-home, is anyone else manufacturing the spartan 6?
11:43 AM JT-MachineShop: hmm, my X axis dropped down on one side of the ender 3...
11:45 AM roycroft: my printer is resting contenly
11:45 AM roycroft: contently
11:48 AM JT-MachineShop: I wonder if the X axis dropping caused the divot the other day
11:48 AM * JT-MachineShop is going to look close at it after my nap
11:49 AM -!- #linuxcnc mode set to +v by ChanServ
11:57 AM djsftree[m]: <CaptHindsight[m]> "https://forum.linuxcnc.org/10-..." <- fixed, i think!
12:14 PM CaptHindsight[m]: ๐ŸŽ‰
12:15 PM pcw-home: No SP6 is Xilinx/AMD only and they suggest moving to Artix or Spartan7 which are still a year or more out
12:19 PM pcw-home: If you search Digikey for all FPGAs of adequate size and are in stock, Efinix is about all there is...
12:23 PM Tom_L: why are they ahead of the game on supply?
12:23 PM perry_j1987: new vfd and new metal pulleys and belt arriving our for delivery! woohoo
12:35 PM CaptHindsight[m]: perry_j1987: which VFD did you decide on?
12:35 PM perry_j1987: https://www.automationdirect.com/adc/shopping/catalog/drives_-a-_soft_starters/ac_variable_frequency_drives_(vfd)/micro/gs11n-11p0
12:36 PM travis-farmer is now known as travis_farmer
12:39 PM CaptHindsight[m]: and only $151.00, so why buy knock-offs?
12:54 PM perry_j1987: aye
12:54 PM perry_j1987: i hadnt seen any affordably this whole time till someone suggested this one heh
12:56 PM pcw-home: <Tom_L> Not really sure except unlike most FPGAs they use a standard (non-tweaked) CMOS process (and are fabbed in SMIC in China)
12:57 PM roycroft: the huanyang vfds that i use are in that price range, and i've found them to be quite reliable
12:57 PM roycroft: there are huanyang look-alikes, though, that are shite
12:57 PM pcw-home: May also be that being new, they don't have a huge designed-in base yet
12:57 PM roycroft: the one you purchased looks to be decent, from a cursory glance at the specs and the manual
12:58 PM * roycroft hopes that there will be fpgs made in georgia or connecticut or arizona or somewhere similar before too long
12:58 PM roycroft: fpgas, rather
12:59 PM perry_j1987: why does the mail take so long to get here when its out for delivery lol
01:00 PM perry_j1987: whenever its just bills and junk mail it arrives so fast lol
01:00 PM roycroft: today is wednesday
01:00 PM ZincBoy[CAON][m]: Just like christmas morning when you were a kid ๐Ÿ™‚
01:00 PM roycroft: my delayed delivery of the filament that i am awaiting is finally out for delivery
01:01 PM roycroft: i have a dinner engagement at 5:30
01:01 PM roycroft: so i'm fairly confident that the delivery will take place around 5:35
01:01 PM roycroft: whereas if i did not have a dinner engagement today, the mail would arrive at 2pm
01:02 PM roycroft: and that will be fine, as long as it doesn't get stolen (which is a distinct possibility)
01:03 PM roycroft: i'd rather queue up a print job before i leave for my dinner engagement, but i can just as well do so when i return
01:06 PM perry_j1987: any of you guys ever use a tormach
01:09 PM roycroft: i have not
01:10 PM roycroft: john saunders (nyccnc) was heavily invested in tormach gear - hundreds of thousands of dollars
01:10 PM roycroft: he soured on them and got rid of all the tormach machines a few years ago
01:10 PM roycroft: you might check out some of his youtube videos to get his perspective on tormach
01:11 PM perry_j1987: aye i've talked with john before a while back
01:12 PM roycroft: my recollection, and it's been a while, is that his concerns were both about the suitability of the machines for his growing business - he needed larger, more rigid machines - and that tormach support had become rather poor
01:12 PM ZincBoy[CAON][m]: They are a low end machine and the main selling feature is the physical size and electrical requirements. For the same price of one of the Tormach, you can get a "real" lightly used machining center if you have the infrastructure to support it.
01:13 PM roycroft: yes, you can stick a tormach in a residential garage and make parts with it
01:13 PM roycroft: that's harder to do with a 4 ton plus machine that requires 3 phase 600v power
01:13 PM CaptHindsight[m]: can't fit a Haas or Matsuura in the garage
01:13 PM CaptHindsight[m]: well most can't
01:14 PM ZincBoy[CAON][m]: That is completely wrong. I have one in my garage ๐Ÿ™‚
01:14 PM roycroft: and i don't think john ever said "the tormachs are crappy machines"
01:14 PM CaptHindsight[m]: some people don't want to build or even modify a machine
01:14 PM roycroft: i think he said "i've outgrown them"
01:14 PM JT-Shop: I had 3 CNC's in my garage
01:14 PM CaptHindsight[m]: they want to buy and plug in only
01:14 PM JT-Shop: and a car
01:14 PM roycroft: but i do recall he had some issues with tormach support
01:14 PM ZincBoy[CAON][m]: Just because you can't put a car in there anymore is besides the point ๐Ÿ™‚
01:15 PM perry_j1987: i dont see myself outgrowing the capabilities of tormach machines
01:15 PM perry_j1987: so they constantly look quite lucrative
01:15 PM roycroft: and that's where i would have concerns, regardless of the class of machine
01:15 PM perry_j1987: tormach is only half hour away from me
01:15 PM roycroft: like "i had this problem and they blew me off"
01:16 PM perry_j1987: if they didnt give me support i can go bang on their windows lol
01:16 PM roycroft: but again, it's been several years since this happened
01:16 PM roycroft: and if i'm honest, while john seems like a nice guy, his demeanor and his tone of voice i find rather offputting
01:17 PM CaptHindsight[m]: their founder died in a boating accident a few years ago
01:17 PM roycroft: perhaps that's a good reason for me to live as far away from new york as possible :)
01:17 PM roycroft: so i never really followed his channel closely
01:17 PM roycroft: i did not know that
01:18 PM roycroft: i wonder of that is when their support changed
01:18 PM roycroft: again, it's been a while, but iirc john was happy with them for quite a while and then soured on them almost overnight
01:18 PM CaptHindsight[m]: https://www.reddit.com/r/CNC/comments/3djr6e/the_founder_ceo_of_tormach_has_died_in_a_sailing/
01:20 PM perry_j1987: hate online news paper websites
01:20 PM perry_j1987: lol
01:20 PM * JT-Shop hates reddit
01:21 PM roycroft: the only problem with reddit is that it's full of redditers
01:21 PM JT-Shop: ok time to clean the cage I used to give the neighbors rooster a new zip code
01:22 PM roycroft: don't forget to have the rooster update its voter registration
01:22 PM roycroft: *chuckle*
01:23 PM roycroft: $formerpresident signed a bill into law in 2018 making it a felony to knowingly remove classified documents with the intent to store them in an unauthorized location
01:25 PM roycroft: was that a foreshadowing of self-pw3n?
01:26 PM CaptHindsight[m]: an idiocracy would be aiming higher at this point
01:28 PM JT-Shop: the rooster gets his own harem now
01:28 PM perry_j1987: i just want to see a president in their 50's-60's lol
01:28 PM perry_j1987: is that too much to ask
01:29 PM JT-Shop: another thing I noticed it the Z nut is sloppy
01:29 PM roycroft: until 2017 that was the norm, perry_j1987
01:30 PM perry_j1987: they should be young enough to live with the mess they make afterwards eh? heh
01:37 PM CaptHindsight[m]: https://arstechnica.com/information-technology/2022/07/researchers-unpack-unkillable-uefi-rootkit-that-survives-os-reinstalls/ really! :)
01:38 PM roycroft: i'd prefer presidents that do not create messes for anyone to have to live with
01:39 PM CaptHindsight[m]: so not Johnson, Nixon, Reagan, Cheney etc?
01:40 PM roycroft: none of the above
01:42 PM roycroft: i am fairly well-grounded on this planet, and have no expectation of ever having a drama-free, mess-free president
01:42 PM roycroft: but that is still what i would prefer, were this the best of all possible worlds
01:45 PM CaptHindsight[m]: people haven't evolved past peeing and pooping not where you eat, and that was 3-4 thousand years ago
01:45 PM CaptHindsight[m]: it takes time
01:46 PM JT-Shop: are anti backlash nuts for Z worth it on an ender 3?
01:46 PM JT-Shop: https://www.amazon.com/gp/product/B07G5JV2B5
01:46 PM ZincBoy[CAON][m]: I can't imagine they would make much difference.
01:47 PM roycroft: there really shouldn't be any backlash, i'd think
01:47 PM roycroft: the weight of the axis would effectively eliminate backlash, no?
01:47 PM roycroft: gravity always wins
01:47 PM JT-Shop: my current nut has backlash
01:47 PM CaptHindsight[m]: JT-Shop: i keep a few around since they tend to fail right when you need them
01:47 PM JT-Shop: so I wonder about homing the Z and not going all the way down
01:48 PM roycroft: perhaps since the z is not as heavy on an ender 3 as on an ender 5 it is possible to have some backlash
01:49 PM ZincBoy[CAON][m]: The weight on the z axis makes the backlash not matter as roycroft mentioned.
01:49 PM roycroft: on my printer z raises and lowers the print bed, not the hot end
01:49 PM JT-Shop: that could also have been part of my issue the other day
01:49 PM CaptHindsight[m]: cutting forces can move a Z up
01:49 PM JT-Shop: in any case the dual Z parts are on the way
01:49 PM roycroft: maybe hang some fishing weights off your hot end :)
01:50 PM CaptHindsight[m]: "things rarely said to grandma at Thanksgiving"
01:50 PM roycroft: hey
01:50 PM roycroft: as long as she keeps inviting drunk uncle to her thanksgiving dinner, anything goes
01:53 PM perry_j1987: theres so much flex in ender 3 backlash nut prob wont do much
01:54 PM perry_j1987: it already has gravity helping it
01:54 PM JT-Shop: flex where?
01:54 PM perry_j1987: put a finger on the right side of the x gantry
01:54 PM JT-Shop: mine doesn't move... in any case I'm going with dual Z leadscrews
01:55 PM JT-Shop: I think I'll just try pom nuts for now
01:55 PM perry_j1987: standard printing it only moves in one direction
01:55 PM perry_j1987: unless your doing z hop
01:55 PM JT-Shop: homing moves in two directions
01:55 PM perry_j1987: so it should only rest on one side of the screw threads
01:56 PM perry_j1987: yes for homing but not for operation
01:56 PM perry_j1987: more like a lathe with tons of backlash
01:56 PM perry_j1987: doesnt matter so much for the cut cause your only riding on the threads anyhow
01:57 PM perry_j1987: for the dual z leadscrew are your doing two motors or belted together leadscrew?
01:58 PM roycroft: but since the screw is vertical the nut should always be following the bottom thread wall
01:58 PM roycroft: sure, if there's backlash you can wiggle the axis up and down with the screw stationary
01:58 PM roycroft: but any time the screw turns, the nut should be indexing off the lower wall
01:59 PM perry_j1987: also uses springy couplers
01:59 PM roycroft: unless you're doing extremely high speed rapids, and move it up and then reverse very very quickly
01:59 PM perry_j1987: on some i seen
01:59 PM CaptHindsight[m]: https://www.mcmaster.com/wheels%2Fguide-rollers%2Ftight-tolerance-drive-rollers/drive-rollers-6/ who sells these at more realistic prices?
02:00 PM CaptHindsight[m]: skate wheels are $5
02:01 PM perry_j1987: whats it for CaptHindsight[m]
02:02 PM CaptHindsight[m]: idler wheel for encoders
02:02 PM perry_j1987: could use a bearing hub not rigid hub then?
02:03 PM perry_j1987: what width
02:03 PM * JT-Shop can't visualize and idler wheel for encoder
02:05 PM CaptHindsight[m]: "a bearing hub not rigid hub" ?
02:06 PM * JT-Shop should go change the hydraulic hoses on the Kubota so I can dump the burn barrel
02:06 PM perry_j1987: idlers usually spin right?
02:06 PM perry_j1987: so wheel with a bearing
02:06 PM CaptHindsight[m]: JT-Shop: suitable wheels are usually idlers, but they don't idle when used for an enoder
02:07 PM CaptHindsight[m]: yes it should spin freely
02:07 PM JT-Shop: does the wheel drive the encoder by rolling on something?
02:07 PM perry_j1987: how wide
02:07 PM CaptHindsight[m]: but the bearing is the encoder
02:07 PM CaptHindsight[m]: <12mm
02:09 PM CaptHindsight[m]: like tape decks
02:10 PM CaptHindsight[m]: a drive wheel pulls the tape and an idler or idlers are used for tension as well as position feedback
02:11 PM XXCoder: JT-Shop: any impact I'd re-do check on hotend assembly parallel to bed, and also check z leveling
02:12 PM XXCoder: from what I see so far, ender 3 is a lot of problems
02:16 PM XXCoder: on those anti-backlash nuts why not? it is quite easy to use too.
02:21 PM perry_j1987: tormach video just dropped on nyccnc roycroft https://www.youtube.com/watch?v=T-R-O1ZYzqw lol
02:32 PM roycroft: a new one?
02:32 PM roycroft: i thought he was long done with tormach
02:34 PM XXCoder: seems not
02:34 PM CaptHindsight[m]: now he seems wishy washy
02:34 PM XXCoder: maybe he still has em but much less support for them
02:35 PM XXCoder: or maybe tormach got back and told him that tech support guy was fired or something
02:35 PM XXCoder: we just dont have facts
02:35 PM XXCoder: he didnt say anything from what I see on latest so yeah
02:42 PM roycroft: i must say, john is not as annoying as he used to be
02:42 PM roycroft: perhaps it's an age thing
02:42 PM roycroft: perhaps it's a moving away from nyc thing
02:42 PM roycroft: probably it's a combination of the two
02:55 PM XXCoder: hard to predict what would cause that
02:55 PM XXCoder: maybe he started dating
02:55 PM XXCoder: (assuming he was previously single)
02:57 PM JT-Shop: XXCoder, I'm going through the whole ender when the second Z screw arrives
02:58 PM XXCoder: you'll probably find few more problems. its quite solid once you fix few of issues
02:58 PM XXCoder: did your z screw get bent or something?
03:18 PM Tom_L: glue printers seem like alot of maintenance
03:18 PM Tom_L: JT-Shop, how's the hal stuff goin?
03:19 PM Tom_L: any reason to update the rpi deb?
03:32 PM JT-Shop: still working on it... https://forum.linuxcnc.org/27-driver-boards/46614-mesa-confguration-tool-update#249453
03:33 PM Tom_L: saw that
03:33 PM JT-Shop: not sure what functions to add...
03:33 PM Tom_L: oh.. all of em of course !
03:33 PM JT-Shop: I figured the basic logic functions was a good place to start
03:33 PM Tom_L: yeah
03:34 PM JT-Shop: I'll build a deb and push in a bit if you want to test it
03:34 PM Tom_L: just woke from a peacful nap.. )
03:34 PM JT-Shop: down to washing the wheels then it's chicken sprouts time
03:34 PM JT-Shop: nice
03:35 PM JT-Shop: so quiet you can hear a pin drop on the carpet?
03:35 PM Tom_L: yeah it woke me up
03:36 PM Tom_L: debounce
03:36 PM Tom_L: mux
03:36 PM Tom_L: abs
03:37 PM Tom_L: scale
03:37 PM Tom_L: lut would be hard
03:39 PM Tom_L: i wonder which debian i had that repo on
03:39 PM Tom_L: i'm guessing 10 or 11
03:41 PM JT-Shop: which repo?
03:41 PM Tom_L: yours
03:41 PM JT-Shop: debounce would be a real good one
03:41 PM Tom_L: just do a git pull?
03:42 PM JT-Shop: wait till I push it
03:42 PM Tom_L: too late :)
03:43 PM Tom_L: edge
03:44 PM mrec: turning POM is interesting, RPM+Feedrate have a direct impact on the dimensions due to heat
03:44 PM JT-Shop: some of those are pretty complicatd
03:44 PM Tom_L: yeah
03:44 PM Tom_L: i'd start with the logic like you said
03:44 PM JT-Shop: scale is simple enough
03:45 PM Tom_L: setting up spindle sync would be handy for some
03:46 PM Tom_L: probably too hard on that one
03:46 PM * JT-Shop wanders down to the chicken yard to spoil some hens
04:02 PM JT-Cave: pushed
04:13 PM XXCoder: roycroft: no flash floods there?
04:13 PM XXCoder: here its just cloudy and nicely cool
04:13 PM roycroft: not here in eugene
04:13 PM roycroft: possibly where the fires were
04:14 PM XXCoder: i got question, the door seem to be missing screws, I checked and holes was badly stripped
04:14 PM XXCoder: do I just use wood fill then let it cure with screws in, or just let it solidify and screw in>?
04:14 PM roycroft: no floods that i've found out about
04:15 PM roycroft: we had 5473 lightning strikes in oregon last night, which started 124 new wildfires
04:15 PM roycroft: what i usually do is carve some wooden pegs to fit the holes, glue them in, and then drill pilot holes for the new screws
04:15 PM roycroft: after the glue has dried
04:16 PM roycroft: if you're in a hurry and you can support the door or hinges or whatever, fill the holes with epoxy, install the screws, and let it sit until the epoxy cures
04:16 PM roycroft: but that's not going to be as strong as plugging the holes properly
04:17 PM XXCoder: epoxy you mean that brown epoxy that cures into woodlike consientacy
04:18 PM roycroft: epoxy with filler would be better than just epoxy
04:18 PM roycroft: wood filler would be fine
04:18 PM roycroft: jb-weld, which has a metallic filler, would work, but would be harder to insert wood screws into
04:18 PM XXCoder: something like https://www.amazon.com/Gorilla-Purpose-Wood-Filler-Ounce/dp/B09LRBT9QH/ ?
04:19 PM roycroft: that would not be very strong, i should think
04:19 PM XXCoder: ok thanks
04:23 PM JT-Shop: I take small pieces of wood and titebond and drive them in and after overnight drill new hole
04:35 PM roycroft: yes, that's really the best way to do it
04:36 PM roycroft: and the grain direction of the plugs should match the grain direction of the wood being plugged
04:36 PM roycroft: don't pound it in like a dowel, with the end grain sticking out
04:42 PM perry_j1987: ugh i hate fedex
04:42 PM XXCoder: suppose thats the best but then we arent skilled here :D
04:42 PM perry_j1987: went to bathroom and couldnt get to door in time as they drove off
04:42 PM perry_j1987: now i. gotta wait till tomorrow for the VFD
04:43 PM perry_j1987: whats more.. it specifically said to leave at door no signature required!
04:43 PM XXCoder: did you see them drive off?
04:43 PM perry_j1987: it was about a minute or less that i came out
04:43 PM perry_j1987: got the piece of paper that said a minute before i got to the door
04:43 PM XXCoder: ahh drat. yeah weird too
04:44 PM perry_j1987: its always something with fedex
04:48 PM roycroft: i always leave a delivery release document hanging on the door when it's something like that
04:49 PM roycroft: much of the time the driver honors the release document request
04:50 PM perry_j1987: it was specified no signature required
04:50 PM roycroft: yes
04:50 PM roycroft: but that obviously does not mean anything
04:50 PM JT-Shop: drivers around here are much nicer
04:53 PM perry_j1987: at least i got the new drive pulleys and belt for the mini lathe
04:53 PM perry_j1987: ordered metal pulleys and XL belt upgrade for the thing
04:55 PM perry_j1987: at least i brought couple beers out to the shop with me today to get me through these upgrades haha
04:59 PM roycroft: if you brought beers with you to the shop today then it's a good thing you did not get the vfd :)
04:59 PM perry_j1987: lol
05:00 PM perry_j1987: deathly level voltages and beer dont mix or somethin?
05:04 PM roycroft: it would not be my best recommendation
05:08 PM Tom_L: JT-Shop, got it.. building
05:13 PM * JT-Shop officially declares the weekend has arrived for him
05:13 PM Tom_L: does it save the hal input to file yet?
05:13 PM JT-Shop: no, you have to copy and paste
05:14 PM JT-Shop: I still need to do checking to make sure a pin is not used somewhere else
05:14 PM Tom_L: lots of checking..
05:14 PM Tom_L: got that little usb thing today
05:15 PM JT-Shop: not to bad I don't think, just make sure no I/O is not used on the I/O tab I think
05:15 PM JT-Shop: and make sure only one signal source per signal...
05:16 PM bjorkintosh: do any of you use g68/g69?
05:16 PM Tom_L: only allow pins that are suitable for the board selected?
05:16 PM Tom_L: bjorkintosh, i don't
05:16 PM JT-Shop: I just ordered a new motherboard for the ender 3 so I could use the auto leveling
05:17 PM bjorkintosh: damn.
05:17 PM Tom_L: bjorkintosh, that is not listed as a lcnc gcode
05:17 PM JT-Shop: when you select a board (7i96S ATM) the I/O pins are added to the HAL tab so if (when completed) a different board is selected different pins show up
05:17 PM JT-Shop: bjorkintosh, http://linuxcnc.org/docs/stable/html/gcode/g-code.html
05:18 PM Tom_L: bjorkintosh, not even in 2.9...
05:18 PM Tom_L: http://linuxcnc.org/docs/devel/html/gcode/g-code.html
05:18 PM roycroft: hmm, it looks like my filament arrived
05:18 PM roycroft: and before i left for dinner
05:18 PM Tom_L: bjorkintosh, what are they supposed to do?
05:18 PM roycroft: odd
05:19 PM bjorkintosh: Tom_L, rotate the co-ordinate.
05:19 PM Tom_L: coordinate rotation
05:19 PM Tom_L: just looked it up
05:19 PM XXCoder: JT-Shop: nice idea, since stock ender 3 board I heard isnt great at all
05:19 PM JT-Shop: not in LinuxCNC
05:19 PM Tom_L: no lcnc doesn't have that
05:20 PM JT-Shop: ender 3 board is missing the header for the CR-Touch
05:20 PM JT-Shop: bjorkintosh, http://linuxcnc.org/docs/stable/html/gcode/g-code.html#gcode:g10-l2
05:21 PM JT-Shop: G10 L2 does rotation
05:21 PM bjorkintosh: so let's say you're cutting a slot, you can use something like g68 x0 y0 R{30,60,90} PO003; G69; to repeat the 003 subprogram at the angles given.
05:21 PM JT-Shop: not in LinuxCNC you can't
05:21 PM bjorkintosh: bah. that's frustrating.
05:22 PM JT-Shop: you have to do it a different way like the NIST set it up...
05:22 PM Tom_L: not a common one
05:22 PM Tom_L: at least not around these parts
05:22 PM bjorkintosh: https://www.youtube.com/watch?v=-9xpjNajVZ8
05:22 PM bjorkintosh: it's on quite a few fanuc controllers.
05:22 PM * JT-Shop doesn't watch fanuc
05:23 PM Tom_L: feel free to write one
05:23 PM bjorkintosh: write what?
05:23 PM Tom_L: a G68-69 gcode
05:23 PM bjorkintosh: hmm.
05:23 PM Tom_L: it would be handy but seldom used i think
05:23 PM JT-Shop: Tom_L, we have a new problem with the Whirlpool automatic assembly machine and have to change the station that picks up the push washer from vacuum to gripper
05:23 PM Tom_L: or it would have been there already
05:24 PM bjorkintosh: what about G15/G16 for polar coordinates? does anyone use that at all?
05:24 PM JT-Shop: I have two 3/4" square tiny grippers in my collection so one is being used
05:24 PM bjorkintosh: or is it yet another fanuc-ism?
05:24 PM Tom_L: that also is not listed
05:24 PM JT-Shop: http://linuxcnc.org/docs/stable/html/gcode/g-code.html
05:24 PM mrec: g10 l2 works well I just used it a few days ago
05:24 PM JT-Shop: that is the g code we have
05:24 PM bjorkintosh: mrec how did you use it?
05:25 PM JT-Shop: g10 l2 R something
05:25 PM JT-Shop: <JT-Shop> bjorkintosh, http://linuxcnc.org/docs/stable/html/gcode/g-code.html#gcode:g10-l2
05:25 PM mrec: G10 L2 P1 R180
05:25 PM JT-Shop: I'll repost the link for you
05:25 PM mrec: afterwards reload the file
05:26 PM bjorkintosh: hmm. interesting.
05:26 PM JT-Shop: you could use P0 for the active coordinate system
05:26 PM mrec: and reset with g10 l2 p1 r0 (to go back to the original)
05:26 PM bjorkintosh: P0 is effectively G53 isn't it?
05:26 PM mrec: P1 = g54
05:26 PM Tom_L: JT-Shop, by the time you're done coding mesact will have as large a code base as lcncn :)
05:26 PM JT-Shop: P0 is the current active coordinate system
05:26 PM mrec: p2 = g55 etc.
05:27 PM JT-Shop: so P0 is not G53
05:27 PM JT-Shop: Tom_L, I kinda doubt it lcnc is bloated with gui's lol
05:27 PM Tom_L: aside from that..
05:27 PM bjorkintosh: yes. I know that bit. but I thought P1 = G54 so P0 = G53 for some n,m
05:28 PM JT-Shop: lcnc base code is pretty small
05:28 PM Tom_L: P1 is G54
05:28 PM Tom_L: P0 is the current work offset
05:28 PM bjorkintosh: I see.
05:28 PM JT-Shop: I'll repeat P0 is for the current active coordinate system G54-59.3
05:28 PM Tom_L: so if it is set to G55 P0 is G55
05:28 PM bjorkintosh: makes sense.
05:28 PM bjorkintosh: thank you.
05:29 PM Tom_L: a little more work than G68 but doable
05:30 PM JT-Shop: low tonight is 63ยฐF :)
05:32 PM Tom_L: 66 here
05:37 PM Tom_L: bjorkintosh, if your current work offset X0Y0 wasn't where the center of rotation needed to be, set up a new work offset and call that one with the G10 L2 Pxx
05:39 PM bjorkintosh: I see. Thanks Tom_L
05:39 PM Tom_L: untested...
05:47 PM * JT-Shop calls it a day
06:07 PM perry_j1987: there we go metal drive pulleys and a new xl belt installed on the mini lathe
06:08 PM perry_j1987: had to modify the pulleys to fit and its running super nice now compared to the old setup
06:08 PM perry_j1987: 3to1 ratio now so it says thats 40% more torque than the stock setup
06:34 PM perry_j1987: i where did my box of assorted setscrews go...
06:45 PM perry_j1987: no one's fessing up eh i see how it is
07:53 PM perry_j1987: so i changed the pulley ratio on this lathe
07:53 PM perry_j1987: what needs changed in .ini or .hal now?
07:55 PM perry_j1987: if i tell the lathe to go 500rpm the spindle encoder reports 370
08:35 PM perry_j1987: im not sure why its different now actually
08:35 PM perry_j1987: the encoder is still going off the spindle itself
08:35 PM perry_j1987: why would its speed have changed the lathe is deffiently spinning slower
08:35 PM perry_j1987: before when i told it to go 500 the rpm would show 500
08:36 PM perry_j1987: now it shows 370 when i tell it to go 500
08:36 PM ZincBoy[CAON][m]: If you are controlling the drive with a voltage, your volts/rpm will now be different.
08:37 PM perry_j1987: if you have an encoder configured why cant it just use that for figuring out its speed lol
08:37 PM perry_j1987: shouldnt that supersede volts/rpm hardcoding?
08:38 PM ZincBoy[CAON][m]: You can if you use a PID feedback loop. Otherwise how does it know to increase the voltage to hit the correct RPM?
08:38 PM perry_j1987: and ya i am controling it with voltage
08:38 PM perry_j1987: because it knows the rpm cause the encoder i'd think :)
08:39 PM perry_j1987: what use is the encoder
08:39 PM ZincBoy[CAON][m]: By default the system just puts out a voltage for a programmed RPM.
08:39 PM perry_j1987: so the encoder's just giving me a fancy display in axis gui then?
08:39 PM ZincBoy[CAON][m]: The encoder is used to know where the spindle is for synchronized motion with the axis
08:40 PM ZincBoy[CAON][m]: And for displaying the real rpm
08:40 PM perry_j1987: is there any reason you wouldnt want linuxcnc to govern the voltage based on encoders?
08:41 PM perry_j1987: if its bogging down it'd try to feed more voltage and start surging i guess?
08:42 PM ZincBoy[CAON][m]: I do on my lathe. I use a PID to control the spindle rpm so that it doesn't change based on load. It also compensates for error in the voltage/rpm conversion in the drive.
08:43 PM perry_j1987: how tough is that to setup
08:43 PM ZincBoy[CAON][m]: The main reason to not do this is because the loop needs to be tuned and most applications don't really need it.
08:44 PM ZincBoy[CAON][m]: You just have to add a hal pid component for the spindle and connect it up similar to the axis pid comps.
08:45 PM ZincBoy[CAON][m]: Nothing tricky, just needs tuning of the PID and FF values.
08:47 PM ZincBoy[CAON][m]: I don't bother with this on my mill as just with a straight voltage control it is good to less than 50rpm error in high gear. Nothing to worry about.
08:47 PM Tom_L: i added it to my spindle to compensate on the lower rpm range mostly
08:48 PM Tom_L: even though the vfd has feedback from the motor i run an encode to the spindle itself back to lcnc
08:55 PM perry_j1987: this little machine is working so much nicer with the new drive pulleys
08:55 PM perry_j1987: looking forward to getting a brushless motor on it next i think
08:57 PM perry_j1987: its fly cutting .5mm depth of cut at 50ish mm diameter 70mm/s 500rpm