#linuxcnc Logs

Aug 26 2024

12:52 AM Deejay: moin
01:10 AM lcnc-relay: <meisterdippel> https://www.youtube.com/watch?v=Nc6XFO9slrM
01:10 AM lcnc-relay: <meisterdippel> 😍
01:17 AM lcnc-relay: <meisterdippel> you should be able to rebuild it for lcnc
02:11 AM lcnc-relay: <captainhindsight_.> Hey Mr Ripple, what's shaking?
02:11 AM lcnc-relay: <captainhindsight_.> Heh auto-correct
02:14 AM lcnc-relay: <meisterdippel> have you seen the video ?
02:22 AM lcnc-relay: <meisterdippel> https://www.youtube.com/watch?v=Nc6XFO9slrM
02:23 AM xxcoder: interesting
02:36 AM lcnc-relay: <meisterdippel> i think this is a killer feature that we should replicate in lcnc
03:32 AM lcnc-relay: <captainhindsight_.> Image guided touch probing
03:33 AM lcnc-relay: <captainhindsight_.> Pretty simple with Python and opencv
03:37 AM lcnc-relay: <meisterdippel> very good, get started 🙂
03:59 AM lcnc-relay: <die_limonade> I have a question. How do i wire up an differential encoder with a Mesa-card (7c81) ?
04:11 AM lcnc-relay: <meisterdippel> who is mesa, never heard of her 😂 sorry, don't know
04:13 AM lcnc-relay: <meisterdippel> 7C81 have only TTL IO's so you need some kind of adapter
04:13 AM JT-Cave: morning
04:19 AM lcnc-relay: <Travis Farmer> Morning
04:19 AM lcnc-relay: <die_limonade> what kind of adapter do ineed? Sorry for my stupid questions, I am not great wirh hardware
04:40 AM Tom_L: morning
04:53 AM lcnc-relay: <meisterdippel> "differential to ttl converter" but i have no idea about the mesa cards, i think there must be something ready. what do you have for boards on your 7c81 at the moment?
04:58 AM lcnc-relay: <die_limonade> I only have the mes 7c81, no additional board yet
05:16 AM lcnc-relay: <meisterdippel> maybe something like that, but as I said, I'm not familiar with mesa: https://eusurplus.com/index.php?route=product/product&manufacturer_id=11&product_id=145
05:54 AM lcnc-relay: <captainhindsight_.> meisterdippel : I'll add the project to the voluntold list
05:55 AM lcnc-relay: <captainhindsight_.> http://www.mesanet.com/pdf/parallel/7c81man.pdf
07:06 AM rdtsc-wk: die_limonade, which differential encoder?
07:07 AM JT-Cave: Tom_L, updated mesact
08:31 AM lcnc-relay: <die_limonade> It is an encoder output of my servo-drive, specifiacally the T6-750RS: 750W AC Servo Motor Driver from stepperonline
08:48 AM rdtsc-wk: die_limonade get the T6_Servo_Full_Manual.pdf from https://www.omc-stepperonline.com/t6-series-750w-ac-servo-motor-kit-3000rpm-2-39nm-17-bit-encoder-ip65-t6-rs750h2a3-m17s if you haven't already
08:48 AM rdtsc-wk: 4.2.5 Encoder output Port-CN6 Terminal shows how the encoder output is wired
08:51 AM rdtsc-wk: manual doesn't give voltage output on CN6
08:51 AM rdtsc-wk: measure it with a handheld multimeter... DC volts negative to A-, positive to A+, position shaft and look for 0V and some other voltage, hopefully 5.0V
08:53 AM lcnc-relay: <vibram> https://jauriarts.org/_matrix/media/v3/download/jauriarts.org/iFsfJFcDWqfTbtFiSgDIqgeP/maho-graziano-gr-200-c-600x338-jpg.png
08:53 AM lcnc-relay: <vibram> say hello to the new turret I will have to retrofit 🙂
08:53 AM lcnc-relay: <meisterdippel> ahh, this can be used like a normal stepper
08:53 AM lcnc-relay: <vibram> always better when it's free
08:53 AM rdtsc-wk: Note, also try this with the Z output; manual is unclear as to whether that output will source voltage (produce 5V)
08:54 AM rdtsc-wk: Nice vibram, a Maho! :)
08:54 AM lcnc-relay: <meisterdippel> you can connect the encoder direct to the Driver, so no encoder input needed on your mesa
08:56 AM lcnc-relay: <meisterdippel> perfect playground for LinuxCNC-RIO 😇
08:57 AM lcnc-relay: <vibram> the guy is giving away the machine in parts
08:58 AM lcnc-relay: <vibram> i just need the turret
08:58 AM lcnc-relay: <vibram> other members from my forum took some stuff
08:58 AM lcnc-relay: <die_limonade> I think i might have been a little unclear of what my problem is. I have a servo kit with driver and motor, which works just fine. But i want to pass the encoder signal to LinuxCNC since the servo is my spindle for my lathe. So my idea was i can use the encoder output of the drive, so i dont need another encoder
08:58 AM lcnc-relay: <meisterdippel> you need only something like this to control the motors: https://www.amazon.de/DollaTek-5-Achsen-CNC-Breakout-Board-optischem-Koppler-Schrittmotortreiber/dp/B07PNDXZQK
08:59 AM lcnc-relay: <vibram> I'm not decided yet if i control it with a custom MCU and then send a signal to my mesa card of if i control it directly with a mesa card
09:00 AM lcnc-relay: <meisterdippel> ahh, ok, but for late, you should have an index output und no gears between encoder and chuck
09:01 AM lcnc-relay: <meisterdippel> if you like to use synchronous operations
09:02 AM lcnc-relay: <meisterdippel> ahh, ok, but for lathe, you should have an index output und no gears between encoder and chuck
09:03 AM lcnc-relay: <die_limonade> As far as i can tell, the servo drive also puts out a index. I have a timing belt connecting the servo to the spindle, hopefully that isnt a problem.
09:05 AM lcnc-relay: <meisterdippel> for things like Threading, you need one pulse per revolution, that will not work with a belt between
09:07 AM lcnc-relay: <die_limonade> right now it is just 1:1 transmission, so no gearing
09:09 AM lcnc-relay: <meisterdippel> but a belt can also slip
09:10 AM lcnc-relay: <zincboy_ca_on> It will work if you have a timing belt between the servo and the spindle. A vee belt, not so much.
09:11 AM lcnc-relay: <die_limonade> As i mentioned above, it is a timing belt
09:12 AM lcnc-relay: <meisterdippel> ah, sorry, than it's all fine 🙂
09:13 AM lcnc-relay: <zincboy_ca_on> Then connect the encoder output of the drive to the Mesa board. It will work with single ended ttl signals, you just need to set the jumpers correctly.
09:17 AM lcnc-relay: <die_limonade> the problem i am having, that the servo drive only seems to provide a differential signal.
09:17 AM lcnc-relay: <zincboy_ca_on> Even better. Most Mesa cards take differential by default.
09:19 AM lcnc-relay: <die_limonade> but I am using a 7c81 which only takes single ended signals, so i need to somehow convert the differential signal, or other option is to buy a daughterboard which can
09:20 AM lcnc-relay: <vibram> it doesnt work if you connect only one side?
09:20 AM lcnc-relay: <meisterdippel> be careful, yes it can also work with single ended, but not all encoders have 5V signals
09:21 AM lcnc-relay: <die_limonade> So i should try to connect the A+ B+ and Inex+ signal and provide and see if i get an encoder signal?
09:21 AM lcnc-relay: <die_limonade> provide ground*
09:22 AM lcnc-relay: <zincboy_ca_on> Yes. That should work fine. I would double check the voltage on the lines to make sure the are 5V. It is almost guaranteed that they will be but it is good to check.
09:23 AM lcnc-relay: <die_limonade> okay, i will try it and report back. Thank you for your help
09:23 AM lcnc-relay: <zincboy_ca_on> In most cases the "differential" output is really just two TTL drivers with an inverter on the negative output.
09:24 AM lcnc-relay: <die_limonade> ok, good to know
09:34 AM lcnc-relay: <skunkworks8841> You can run single ended <10ft usually with no problem
09:58 AM * JT-Shop heads to Eureka Springs
10:03 AM lcnc-relay: <turboss> https://youtu.be/758vn4TrJ9U?si=zIWK5YOAIOUzMiqS
10:03 AM lcnc-relay: we need a MPG with force feedback lol
10:15 AM lcnc-relay: <zincboy_ca_on> I have actually been working on that as a background project. I am using the SmartKnob as a base and have it partially working. I am sure I will get back to it in the next decade or so 🙂
10:33 AM Gardenweazel: Morning all, seems the forums are down?
10:33 AM lcnc-relay: <skunkworks8841> huh. I had just been there about 30 minutes or more ago..
10:34 AM lcnc-relay: <skunkworks8841> same
10:37 AM Gardenweazel: Back up now.
10:37 AM lcnc-relay: <Travis Farmer> forums are back apparently
10:37 AM lcnc-relay: <Travis Farmer> ditto, lol
10:37 AM lcnc-relay: <skunkworks8841> forums are back up..
10:37 AM lcnc-relay: <skunkworks8841> 😉
10:37 AM lcnc-relay: <Travis Farmer> lol
10:38 AM lcnc-relay: <Travis Farmer> my forum has less downtime than the lcnc forum 😉
10:38 AM lcnc-relay: <Travis Farmer> *but less bandwidth...
12:04 PM Tom_L: JT-Shop, PR #114
02:22 PM lcnc-relay: <skunkworks8841> 97f here
02:32 PM xxcoder: 75f here
02:39 PM lcnc-relay: <Travis Farmer> 72F here... now that the sun has come out
02:48 PM Tom_L: 97f here
04:05 PM -!- #linuxcnc mode set to +v by ChanServ
04:06 PM JT-Mobile: yo
04:09 PM bjorkint0sh: how's Eureka?
04:09 PM JT-Mobile: just got here but the view is amazing
04:10 PM bjorkint0sh: first time?
04:15 PM JT-Mobile: no, we come here at least once a year
04:17 PM bjorkint0sh: haven't been there in ages. did some of the work on the queen anne mansion's fence.
04:17 PM bjorkint0sh: it was a goddamned nightmare because of the fucking heat. never again.
04:18 PM bjorkint0sh: nothing against the mansion or Eureka. it was just a really hot summer.
04:18 PM JT-Mobile: yup that would suck
04:19 PM JT-Mobile: do you live close to there?
04:19 PM bjorkint0sh: I did. ages ago.
04:19 PM bjorkint0sh: In F'vlle.
04:19 PM bjorkint0sh: goodness. it's been more than 15 years already.
04:20 PM bjorkint0sh: tempus fugit.
04:23 PM JT-Mobile: it's been about 5 years since we were here last pre covid
04:31 PM Tom_L: JT-Mobile, pr is up for mesact
04:33 PM JT-Mobile: ok
04:34 PM JT-Mobile: hmm I wonder if I have my ssh keys on this laptop lol
04:38 PM Tom_L: leaves started turning there yet?
04:38 PM Tom_L: maybe a bit early for that
04:39 PM JT-Mobile: too early down here
04:39 PM Tom_L: she's trying to talk me into Denver next weekend... dunno
04:40 PM JT-Mobile: I don't think I have the correct ssh keys on this laptop
04:41 PM JT-Mobile: how far is Denver?
04:42 PM Tom_L: i dunno, i haven't been there since i was in my 20's
04:42 PM Tom_L: her sis is out there but fixin to move back to Ga
04:42 PM Tom_L: gulfstream want's him back
04:43 PM Tom_L: i think it's a straight shot across I70
04:43 PM Tom_L: google says ~8hrs
04:44 PM Tom_L: they're in a suburb but i'm not sure where
04:44 PM Tom_L: not been there since they moved
04:45 PM Tom_L: hour 20 by air
04:48 PM JT-Mobile: I should have checked this laptop before I left
04:48 PM Tom_L: i think i remember you mentioning that once before :)
04:50 PM JT-Mobile: I did manage to get the RR flex hose and metal line off the 82 yesterday
04:51 PM JT-Mobile: hmm git pull seems to be working... maybe I just need to login to github
04:53 PM JT-Mobile: ok got it cloning
04:54 PM JT-Mobile: off to get some chow
06:20 PM * JT-Mobile is FD&H
06:24 PM JT-Mobile: got your tickets yet?
06:37 PM Tom_L: tickets?
06:38 PM JT-Mobile: to Denver
06:38 PM Tom_L: oh, no if we go we'll drive
06:38 PM Tom_L: it's around 8hrs
06:38 PM Tom_L: alot better than the Savannah trip
06:39 PM JT-Mobile: we try and keep our trips to under 6 hours per day any more
06:39 PM Tom_L: they're getting the house ready to sell so they can go back to Savannah
06:40 PM Tom_L: he left gulfstream for some position in Denver but want's to go back and gulfstream want's him
06:40 PM JT-Mobile: got the pr done
06:41 PM Tom_L: so you did have keys to the kingdom
06:41 PM JT-Mobile: yup just needed to log in to github
06:43 PM JT-Mobile: more money?
06:43 PM Tom_L: denver was
06:43 PM Tom_L: they're 'creating' a position for him because he hated his previous boss at gulfstream
06:44 PM Tom_L: she was a piece of work
06:44 PM JT-Mobile: gulfstream is creating a position for him?
06:44 PM Tom_L: i think so
06:44 PM JT-Mobile: cool
06:44 PM Tom_L: he deals with a good chunk of vendors for addon systems
06:45 PM Tom_L: honeywell etc
06:45 PM JT-Mobile: that can be a pia
06:45 PM Tom_L: actually honeywell wanted him too
06:45 PM Tom_L: all the support systems for a plane
06:45 PM JT-Mobile: nice to be wanted
06:46 PM Tom_L: hours suck
06:46 PM JT-Mobile: lots?
06:46 PM Tom_L: he's pretty much on call 24/7
06:46 PM JT-Mobile: ouch
06:46 PM Tom_L: i'm not sure a paycheck would be worth that much to me
06:47 PM Tom_L: it's a 6 figure job
06:47 PM JT-Mobile: that would buy a lot of corvettes but if you don't have the time to drive them what's the point
06:47 PM Tom_L: right before he left savannah he'd been working from home since covid
06:48 PM JT-Mobile: that could be ok...
06:48 PM Tom_L: maybe check in 2x a week or such
06:48 PM Tom_L: been in france quite a bit lately
06:49 PM JT-Mobile: froggys really don't like us or at least they used to not like us when I passed through there
06:49 PM Tom_L: they're a special breed
06:49 PM JT-Mobile: swiss were an uppity bunch
06:50 PM Tom_L: scheduling meetings is a bitch
06:50 PM Tom_L: a little give on both ends to get the time right
06:51 PM Tom_L: i don't think they like Colorado
06:51 PM JT-Mobile: I hate meetings lol
06:52 PM Tom_L: they sent him to Arizona to establish presence there and wanted him to stay but he really hated that
06:52 PM Tom_L: that's when honeywell tried to snatch him up
06:54 PM Tom_L: i'd bet 80% of what he does is meetings... i'd never make it
06:56 PM JT-Mobile: I had a job once that was prepare for meetings, have meetings, prepare for next meeting, do 15 minutes of actual work
06:56 PM JT-Mobile: that jack ass lasted almost a year...
06:59 PM * JT-Mobile calls it a night
06:59 PM Tom_L: later
07:53 PM roycroft: most of my welding gear is moved
07:54 PM roycroft: i feel much better
07:54 PM roycroft: i've been kind of freaked out ever since those ladders were stolen - i feel i need to get anthing of value out of the old house/property asap
08:00 PM * roycroft also moved his 12' step ladder today
08:01 PM roycroft: i wish that had been one of the stolen ones, and not the 8'
08:08 PM xxcoder: better ladder eh
08:28 PM lcnc-relay: <fastindy> https://jauriarts.org/_matrix/media/v3/download/jauriarts.org/TybylnPBWfFMFEAEniSzwatW/R2E4.png
08:28 PM lcnc-relay: <fastindy> Greetings all, scored this old Bridgeport R2E4 and now trying to see what I can do with it. Apparently the controller wouldn't power on anymore so it's going to get either linuxcnc or a Centroid controller.
08:30 PM xxcoder: thats cool :)
08:38 PM bjorkint0sh: centroid huh. how novel! didn't know that existed.
08:57 PM roycroft: the 12' and the 8' are both the same quality, but the 12' is rather unwieldly
08:58 PM roycroft: it's only really useful when you need the full height
08:59 PM roycroft: both are/were rated class 1aa
10:38 PM lcnc-relay: <captainhindsight_.> https://jauriarts.org/_matrix/media/v3/download/jauriarts.org/jQjFlxhTVkaipkGyebsfcHVe/IMG_20240826_222811.jpg
10:38 PM lcnc-relay: <captainhindsight_.> 45Kw spindle and motor
10:40 PM lcnc-relay: <captainhindsight_.> I'm swapping out Centroid for LCNC on a lathe
10:42 PM xxcoder: wow second menion of centroid after never hearing of it before