#linuxcnc Logs
Dec 18 2020
#linuxcnc Calendar
12:00 AM CaptHindsight: Automate anything with 'Super Gerbil' CNC Gcode Controller
12:06 AM sinned6915: roycroft: i got a used Axis IP camera, took the load off of raspi
01:28 AM Deejay: moin
02:47 AM CaptHindsight: sinned6915: whatever one makes the most sense for the given application
05:02 AM howto: good day people
05:02 AM howto: the mesa card experts please stand up
05:03 AM howto: if you wish to help of course
05:04 AM howto: the question is which mesa card should i choose?
05:04 AM XXCoder: choosing tend to be very diffult topic to help. (not mesa and still seated)
05:07 AM howto: well the idea is to choose the right one thst works with stepfour basic 540 so i can be helped on this irc channel
05:07 AM howto: the 3 contenders are:
05:08 AM howto: mesa 7i92m
05:08 AM howto: 7i92h
05:08 AM howto: and there was another one
05:10 AM howto: no...that it those are the two ones...since usb seems to be a bad idea from what i hear
05:10 AM howto: so here what are my thoughts
05:11 AM howto: i am sure that no one will start helping me in depth untill i have a card
05:11 AM JT-Cave: morning
05:12 AM howto: this is the reason i need to buy the right one since i cant just return the product easily
05:13 AM howto: so the big question would be: which one would work best for stepfour basic 540 and the bloody dell precision m6600?
05:14 AM howto: since i get the rtapi error with the parallel docking station i hope that the mesa card will solve the problem
05:14 AM JT-Cave: the only difference between the 7i92h and 7i92m is the rear connector
05:15 AM JT-Cave: install linuxcnc uspace and run latency-histogram --nobase for a while
05:15 AM howto: +JT-Cave how programmable and versatile are the boards? I want to use the controller with the parallel ports that came with the stepfour machine (i would choose the M version for that))
05:16 AM JT-Cave: I don't know anything about the stepfour machine
05:19 AM howto: +JT-Cave my idea is to use the same controller of the machine which has a parallel port that is why i wolud choose the M but the other one can ba fastened with a parallel port accesory too.So if they realy are the same and not more advanced than one another it is a nobrainer to choose the M version
05:20 AM howto: but if the H one has something extra that M doesnt... it is the H one that i should buy
05:20 AM JT-Cave: <JT-Cave> the only difference between the 7i92h and 7i92m is the rear connector
05:21 AM howto: ok so M has a parallel db25 allready there right?
05:21 AM JT-Cave: db25m connector
05:22 AM JT-Cave: 7i92 has db25f, 7i92m had db25m, 7i92h has idc26
05:22 AM howto: had? i still see it on a site in europe
05:23 AM JT-Cave: spello
05:23 AM howto: oh..ok :)
05:24 AM howto: beacause i woudn't want to buy a deprecated product
05:25 AM howto: so would a mesa card solve the rtapi task 1 latency error?
05:25 AM JT-Cave: <JT-Cave> install linuxcnc uspace and run latency-histogram --nobase for a while
05:26 AM JT-Cave: an add on card will not solve a pc issue
05:27 AM howto: +JT-Cave how do i install linuxcnc uspace and what should be the info that i should bring here for conclusions?
05:27 AM howto: they say that tha card should solve the realtime issue...thats what they are built for
05:28 AM howto: the card will not about the pc smi anymore from what i hear
05:32 AM howto: +JT-Cave how do i install linuxcnc uspace to use the latency-histogram --nobase?
05:33 AM howto: once i boot to wheezy i am not going to be here for a while so i need good info...thanks.
05:35 AM JT-Cave: http://linuxcnc.org/docs/2.8/html/getting-started/getting-linuxcnc.html
05:35 AM JT-Cave: https://gnipsel.com/linuxcnc/uspace/
05:37 AM howto: +JT-Cave the terminal command to install the thing would be helpfull..not coercing me to read novels
05:38 AM howto: since i allready have wheezy with linuxcnc installed i shouldnt be needing to install anything
05:38 AM howto: so what is the command to launch the thing and i will stop bothering you for a few hours :)
05:39 AM howto: ps: what should i look for in the histogram to bring here for study after the test?
05:42 AM howto: People I have the rtsai kernel installed. What is the terminal command to launch the latency histogram? And what information I should bring here after the test?
05:42 AM howto: RTAI sorry
05:43 AM Tom_L: morning
05:45 AM Tom_L: damn there's an echo in here today
05:45 AM howto: morning Tom_L will a mesa card solve an rtai latency issue on a workstation laptop that has smi issues?
05:46 AM Tom_L: no clue
05:46 AM howto: aaarrrgggh...and other such noises
05:47 AM rs[m]: hmm. sometimes the matrix irc bridge doesn't login to freenode nickserve
05:47 AM Tom_L: run latency tests and make adjustments to the bios etc to improve it
05:47 AM rs[m]: makes for a strange experience, because there is no erroe message
05:47 AM Tom_L: run latency tests again
05:48 AM rs[m]: howto: get the live cd iso, run latency test with --nobase
05:48 AM Tom_L: i didn't find matrix that reliable
05:48 AM JT-Cave: like I said no card will solve latency issues and a laptop is 99% never going to work
05:48 AM rs[m]: matrix works just fine, i think i have a race between my regular irc client and matrix
05:49 AM JT-Cave: morning
05:50 AM howto: rs[m] how do i do that ? i only know how to click with the mouse how do i run the latency test with this --nobase you are talking about?
05:51 AM howto: +JT-Cave it is probably because the issue is between the program and the bus and not between the program and the parallel port chip
05:52 AM rs[m]: howto: you will need a keyboard. open terminal. enter "latency-test 1000000 -" or "latency-histogram --nobase"
05:52 AM rs[m]: the interesting number is "max jitter"
05:53 AM rs[m]: while latency test is running, open multiple webbrowsers, play youtube video and use google maps
05:54 AM howto: this is what i was asking rs[m] thanks. From what i suspect it will catch six figures without opening more programs
05:55 AM JT-Cave: the issue with laptops is hardware power saving devices
05:56 AM Tom_L: windy today
05:56 AM Tom_L: 41F Hi 49
05:57 AM JT-Cave: should be reasonably nice here mostly sunny 48°F
05:57 AM howto: it is a goddamn workstation laptop and it shouldnt do that.It is not the powersaving ,it is that dell does not want the user to do any productivity with their products. I will get back with results.
05:58 AM rs[m]: howto: you could upgrade to a raspberry pi 4 ;-)
05:58 AM JT-Cave: lol
05:58 AM howto: rs[m] it is just another piece of proprietary garbage. I have a beagleboneblack tough
05:59 AM rs[m]: howto: nor sure what's worse, no gpu or proprietary one
05:59 AM rs[m]: choose your poison
06:00 AM Tom_L: grab a rpi4 and a 7i92 or 7i80
06:01 AM rs[m]: 7c81
06:01 AM Tom_L: or that
06:03 AM howto: Tom_L rs[m] And how much time will i consume just to bring the thing close to where i am now and then to conclude that...hey doesnt work mate cuz X and Y?
06:04 AM howto: anyway i am going to do that test tha i know will fail
06:04 AM JT-Cave: howto, what does uname -a report back?
06:05 AM rs[m]: howto: mesa makes rpi- and linuxcnc-specific hardware, that should be good enough ;)
06:05 AM howto: is it relevant if it is from ubuntu 18.04 oe from the wheezy installation?
06:06 AM JT-Cave: the linuxcnc OS
06:06 AM JT-Cave: the OS that linuxcnc is installed in
06:07 AM howto: i have to boot in the os to tell you: so i have to do 2 test now
06:07 AM JT-Cave: hexchat works in wheezy too
06:07 AM howto: be back in a few
07:13 AM Eric__: JT-Cave have you ever sold a 7i48?
07:21 AM JT-Cave: I'm not sure
07:22 AM Tom_L: how many snowflakes are in a snowball?
07:23 AM JT-Cave: all of them
07:26 AM Tom_L: later...
07:27 AM JT-Cave: I must have I'm out of stock...
07:36 AM Eric__: so is peter. Looks like it would help me eliminate some electronics, don't have much space
08:34 AM sinned6915: what are the touchpanel options for LinuxCNC?
08:35 AM sinned6915: I am trying to find docs in the wiki but not getting anywhere
08:35 AM Eric__: look at touchy, interface for touchpanel
09:20 AM JT-Shop: the wiki is so out of date it ain't funny any more
09:22 AM JT-Shop: https://github.com/jethornton/mill_touch_v6
09:23 AM JT-Shop: https://kcjengr.github.io/probe_basic/quick_start.html
09:23 AM JT-Shop: http://www.qtpyvcp.com/showcase/index.html
10:51 AM jymmmm: morning
11:01 AM Eric__: someone updated the qtpyvcp since I looked at it last
11:02 AM Eric__: ^galleries
11:03 AM JT-Shop: one of my lost packages is out for delivery...
11:10 AM JT-Cave: galleries has been there for quite some time
11:26 AM jymmmm: JT Well, that sounds like a good thing
11:45 AM Tom_L: JT-Cave, delivery to whom?
11:46 AM Tom_L: morning mr jymmmm
11:47 AM jymmmm: Tom_L: Hey, how ya doin?
11:47 AM JT-Shop: me
11:47 AM Tom_L: meh
11:47 AM Tom_L: JT-Shop, is hazzy still on matrix?
11:48 AM Tom_L: haven't been there in ages..
11:48 AM JT-Shop: yea
11:48 AM Tom_L: did they ever finish probe basic?
11:55 AM Tom_L: does qtpyvcp requre 2.8?
12:17 PM JT-Cave: yes
12:23 PM Eric__: I thought qtpyvcp was on discord
12:26 PM Eric__: I have a shipment I really want and ups keeps updating the status to say it's out for delivery
12:26 PM Eric__: makes me suspicious they will say it's not out for delivery later
12:42 PM sinned6915: i installed 2.7.14 and did the latency check. i could use some help interpreting
12:42 PM sinned6915: computer is a dell dimension 4600 with a Pentium 4, 2.4Ghz
12:44 PM sinned6915: with a coupl eof instances of iceweazle, 4-glxgears, xsystem info
12:44 PM sinned6915: jitter says 49944
12:44 PM sinned6915: https://i.imgur.com/81rEqhy.png
12:47 PM sinned6915: so natively, its going to be on the disappointing side?
12:47 PM Eric__: yeah, that's not great but what kind of system do you want to set up?
12:47 PM sinned6915: => FPGA card advisded?
12:47 PM Eric__: stepper?
12:47 PM Eric__: yes, that is plenty fast for a mesa card
12:48 PM Eric__: you only need the slower thread then
12:48 PM sinned6915: nema 34 steppers, 3 axis mill, gecko 201's
12:48 PM Eric__: software stepping was always an add-on hack, albeit a very nice hack
12:49 PM gregcnc: if it's a simple machine and partport is enough, you can try some things to get the numbers down
12:50 PM Eric__: you can, but avoid the frustration and spend the $100
12:50 PM sinned6915: i am reading conflicting info online (go figrue, right?)
12:50 PM sinned6915: $100 is going to be well spent then?
12:51 PM gregcnc: that is the easy solution if the cost is not an issue
12:51 PM sinned6915: 5i525 then a BOB
12:51 PM sinned6915: can I use a import Mach3 BOB?
12:52 PM Eric__: or a 7i96 for $120 http://store.mesanet.com/index.php?route=product/product&product_id=311
12:52 PM sinned6915: or splurge and 5i525+7i76
12:52 PM Eric__: I think 2.8 would be a better choice for that
12:52 PM Eric__: I am starting to like ethernet boards a lot
12:53 PM sinned6915: ok, i am cofused about the 7i96
12:53 PM sinned6915: i tried asking here yesterday
12:54 PM sinned6915: 7i96 and 7i76e
12:54 PM Eric__: what is the confusion?
12:55 PM Eric__: just sourcing vs. sinking?
12:55 PM sinned6915: 7i96 needs FPGA card to go with it?
12:55 PM sinned6915: and 7176e has everything onbaord?
12:56 PM Eric__: I don't know why it's called a daughter card. It needs an ethernet port on the computer
12:56 PM Eric__: it has an fpga
12:56 PM sinned6915: 96 or 76?
12:56 PM Eric__: both
12:58 PM sinned6915: are there FPGA alternatives to MESA cards?
01:02 PM sinned6915: i am frustrated because calling MESA gets me no where
01:02 PM Eric__: people have adopted the hostmot drivers to other devices but support is sketchy
01:03 PM sinned6915: there is little info for an end user to try and defipher all the model humbers and nuances
01:03 PM Eric__: pcw has been off here for a couple of days
01:03 PM sinned6915: and you guys are great, but you should not be responsible to sell their products
01:04 PM Eric__: it's really cheap for what you get, if there was massive handholding it wouldn't be as cheap
01:04 PM sinned6915: as best i can tell, there are like 6 virtually identical products that i am trying to pic
01:04 PM Eric__: yes, that's true about the overlap
01:04 PM sinned6915: i am wishing for a SIMPLE comparison chart
01:05 PM Eric__: for your application a 7i96 seems ideal, or you can go with the add-in card
01:05 PM sinned6915: for comparison, i was considering a UCCNC combination Ethernet motion controller break out box.
01:05 PM sinned6915: $200 one shot deal
01:06 PM Eric__: plug and go kits are simpler to decide. Building your own takes research
01:06 PM sinned6915: who was the mesa reseller again?
01:06 PM sinned6915: had a much better website?
01:07 PM Eric__: JT it's gnipsel.com
01:07 PM roycroft: jt-shop/jt-cave is a mesa reseller
01:07 PM rs[m]: JT / mesaus.com?
01:07 PM Eric__: oh, forgot he had a separate site, I just go through gnipsel
01:08 PM sinned6915: the mesaus.com was the one
01:08 PM Eric__: better meaning not as many choices
01:08 PM roycroft: yes, mesaus.com for his site
01:08 PM sinned6915: ok. so the 5i25-7i76 combo seems like one solution
01:08 PM roycroft: it's the one i have!
01:09 PM sinned6915: the ehternet route is what i am trying determine
01:09 PM roycroft: and if you're not running linuxcnc on a pi, imo it's the most flexible one
01:09 PM sinned6915: now that i have done the latency test on this PC, I am wondering if a pi4 would be better
01:10 PM roycroft: if you use a 5i25 the latencey test is irrelevant
01:10 PM sinned6915: right,
01:10 PM roycroft: i'll say this
01:10 PM sinned6915: but if i go with a 7i96 ot 7i76e, will the Pi4 be enough?
01:11 PM roycroft: and keep in mind that i do have the mesa hardware and a linuxcnc machine, but i'm still in testing mode with that stuff, and don't have it connected to my milling machine yet
01:11 PM roycroft: that said
01:11 PM sinned6915: I am still trying to make heads or tails of how you do touch screens
01:11 PM roycroft: if i were to start this project today, i'd seriously look at a rpi and mesa board for it vs. a stand-alone computer
01:12 PM sinned6915: is the 7" raspi touchscreen supported?
01:12 PM roycroft: would you want a touch screen that small?
01:12 PM roycroft: the one i'm trying to use is 17", and i don't think i'd want to go smaller
01:12 PM roycroft: i have a couple 15" touch screens, but i'm trying to avoid using them
01:12 PM sinned6915: the only other options i am coming up with are point of sale one?
01:13 PM sinned6915: sure, i's love bigger, but i am getting no where trying to find touch screens in the HCL
01:13 PM roycroft: the 17" one that i'm working with is elo, and it has a usb interface for the touch screen
01:14 PM sinned6915: is it safe to assume if linux supports the touchscreen, then it will work in LCNC?
01:14 PM roycroft: s/will/can/
01:14 PM sinned6915: yeah, that is the catch 22
01:15 PM roycroft: it probably will work just fine
01:15 PM roycroft: but you may need to do some tweaking
01:15 PM sinned6915: ok, so if you were going raspi/ethenet, what board do you think you might choose sstarting over?
01:16 PM roycroft: i haven't put any real thought into it
01:16 PM roycroft: and i'm probably not the best one here to make such a recommendation
01:16 PM roycroft: ask jt when he's around
01:16 PM sinned6915: thanks for being honest
01:16 PM roycroft: or perhaps andypugh, but he's on holidays
01:16 PM sinned6915: iwill try him
01:16 PM roycroft: or pcw when he's around
01:17 PM sinned6915: literally, i am having trouble differentiating between 7i96 and 7i76e
01:19 PM sinned6915: ok, thanks
01:20 PM rs[m]: with raspi, you are probable better off with 7c81
01:21 PM roycroft: i don't really know the difference between the 7c80 and 7c81
01:22 PM roycroft: i think those are the options sinned6915 are looking at
01:22 PM roycroft: is
01:22 PM rs[m]: ethernet connected boards are nice because 1) the interface is future-proof 2) ethernet is isolated
01:23 PM rs[m]: 7c81 has 3 "parallel-port" type interfaces. 7c80 has a bunch of interface hardware like differential inputs/outputs and isolated inputs/outputs
01:24 PM roycroft: i don't know what the resale value of mesa cards is, but if i could recover most of the cost of what i have i might consider switching to rpi
01:25 PM roycroft: that could save some space in my shop
01:26 PM roycroft: the rpi4 seems to be a game changer for a lot of applications
01:29 PM gregcnc: the size and power requirements are great
01:30 PM roycroft: i was running octoprint on an old laptop for a while, but i got a rpi4 for it and i love it
01:30 PM roycroft: the pi is mounted inside the printer that it controls
01:30 PM roycroft: zero footprint
01:30 PM roycroft: and it works brilliantly
01:48 PM Eric__: I think being able to use a commodity bob with the 7c81 is really nice
01:53 PM * Tom_L looks at the clock and reads it as 5 o'clock....
01:56 PM Tom_L: for insert size, how are diamond inserts measured? side to side end to end or cross section?
01:57 PM gregcnc: inscribed circle
01:57 PM Tom_L: i have a chart but wasn't sure on that
01:57 PM Tom_L: so basically tip to tip
01:57 PM gregcnc: across the flats
01:58 PM Tom_L: gotcha
01:58 PM Tom_L: was thinking circumscribed
02:00 PM Tom_L: ok so 3/8
02:00 PM gregcnc: what is the holder marked?
02:01 PM Tom_L: getting them somewhere else beside sherline is bound to be cheaper
02:01 PM Tom_L: sherline 'shell' mill
02:01 PM Tom_L: single cutter :)
02:01 PM Tom_L: it would be cool if they made one with like 4 cutters
02:02 PM Tom_L: i should measure it but it looks like about 80 deg
02:04 PM Tom_L: they want 10 for $94
02:04 PM gregcnc: link
02:04 PM Tom_L: https://www.sherline.com/product-category/accessories/lathe-accessories/cutting-tools-lathe-accessories/
02:04 PM Tom_L: i'm pretty sure it's the 80 deg cutters
02:05 PM Tom_L: i'm also fairly sure i can source them locally
02:05 PM gregcnc: for their fly cutter?
02:05 PM Tom_L: yeah
02:05 PM gregcnc: https://www.sherline.com/product/7622-replacement-carbide-insert-for-7620-fly-cutter/#specifications
02:06 PM gregcnc: the lathe tool inserts are smaller
02:06 PM Tom_L: probably so
02:07 PM Tom_L: i don't _need_ one yet but eventually i will
02:07 PM Tom_L: i wish somebody made one with more cutters
02:07 PM gregcnc: I'm sure they do
02:07 PM Tom_L: iirc that's mt1 with a 1/4 20 pull
02:08 PM gregcnc: oh, with MT1 probably not
02:08 PM Tom_L: i have some blanks
02:09 PM Tom_L: mt1 with like a 1" roundbar chunk off the end
02:10 PM Tom_L: https://www.ebay.com/itm/MT1-FMB22-adapter-use-standard-milling-heads-on-sherline-mills-ships-from-USA-/401779314441
02:10 PM Tom_L: haha
02:12 PM gregcnc: 700W will run that tool just fine, but it looks like it might bend just looking at it
02:12 PM Tom_L: yeah
02:13 PM Tom_L: https://www.banggood.com/buy/mt1-fmb22.html
02:14 PM Tom_L: mm i don't see mt1 there
02:14 PM gregcnc: anyone make one that threads right on?
02:14 PM Tom_L: i wish
02:14 PM Tom_L: 3/4 16
02:19 PM gregcnc: at the model engineering shows there would be vendors with the smaller tooling
02:23 PM Tom_L: it did *ok* with a .250 em in that steel yesterday taking light cuts full width
02:23 PM Tom_L: .063 deep iirc
02:25 PM gregcnc: sherline lists CPMW09T304-RK6 WKK20S this is a Walter insert
02:26 PM Tom_L: i was gonna look at kennametal in a bit
02:27 PM Tom_L: valenite are ok too
02:27 PM gregcnc: it has 11° clearance "P". if the holder is cut with 11° you'll need to use the same otherwise you can use the more common 7°
02:27 PM roycroft: i'm such a moocher
02:27 PM roycroft: and damn proud of it!
02:27 PM roycroft: i was starting to work on desiging a quick change tool holder for my 3d printer
02:27 PM roycroft: then i found a guy who alredy did it and pushd a bunch of stl files to thingiverse
02:28 PM roycroft: now, instead of desiging stuff, i'm printing stuff
02:30 PM Tom_L: cnmg are more common
02:30 PM gregcnc: except no relief probably won't work at all in that tool
02:32 PM gregcnc: you need to learn the nomenclature and I would find something with a sharper edge
02:32 PM Tom_L: i have a chart here
02:32 PM Tom_L: used to know a few but not these
02:32 PM Tom_L: mostly square
02:34 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/inserts/insert-blanks-nomenclature.jpg
02:34 PM Tom_L: have a kenametal pdf here somewhere...
02:34 PM gregcnc: CPMT 3251 or the ISO nmber CPMT 09T304 https://www.ebay.com/itm/324375570700
02:38 PM gregcnc: if 7° inserts fit there is a lot of selection. These are all turning inserts. 11° mostly for boring
02:39 PM Tom_L: i'll measure it in a bit.. working on something atm
02:41 PM gregcnc: I broke an insert screw on single flute drill last week. Don't know what happened. Found the insert in the chip pan even.
02:43 PM Tom_L: not cracked?
02:45 PM gregcnc: No. Would have used it if I looked before putting new one in.
02:55 PM Tom_L: looks closer to 11°
03:08 PM gregcnc: THE POCKET?
03:08 PM gregcnc: sry CAD mode
04:04 PM Tom_L: the relief
04:10 PM gregcnc: based on the insert number they list, that is expected. what you can use depends on pocket geometry
04:35 PM JT-Shop: the dead DeWalt angle grinder has been restored to normal service... amazing I remembered how to assemble it after all this time waiting on the brushes
05:09 PM _unreal_: good freaking lord my hip is killing me, bone bruise and I have no memory of causing it
05:10 PM _unreal_: gloops, my thoughts dewalt is a toss up
05:11 PM _unreal_: right now my money is on the kobalt one's only because the batteries are @#%@!^#!%$@#$@ REASONABLY priced
05:20 PM JT-Cave: in `98 when I built this house I had a 12v Milwaukee cordless and when it died a couple of years later I got a 14.4v DeWalt and never had any issue since
05:20 PM JT-Cave: still no change on the cutter head pulley...
05:21 PM JT-Cave: the angle grinder was used a lot so wearing out the brushes after all that time fabricating is ok with me
05:26 PM gloops: i bought a top price dewalt planer and jigsaw for work, they both seemed excellent, but wasnt long before there were issues
05:26 PM sinned6915: roycroft: you around?
05:27 PM JT-Cave: I'm not too keen on the dewalt lunchbox planer or any lunchbox planer...
05:54 PM JT-Cave: the dewalt cordless jigsaw I got not to long ago is really good, much better than the other ones I have
05:57 PM Tom_L: mine is corded but i like it
06:03 PM JT-Cave: jig saw?
06:06 PM JT-Cave: the rest of the parts to finish putting the planer back together should ship Tuesday... wonder how long they will be in transit
06:17 PM sinned6915: are there add-on rotary encoder solutions to add to the back end of a spindle motor?
06:28 PM Eric__: I wouldn't say solutions, per se, meaning someone packages something where you can add an encoder easily
06:28 PM Eric__: gear sensors work on a lot of spindles though
06:43 PM Tom_L: JT-Cave, yes
06:43 PM Tom_L: sinned6915, most of us fabricate our own solution
06:50 PM sinned6915: i am looking for ideas on how to grab onto the back end of the spindle motor
06:52 PM sinned6915: the only thing I am coming up with is to try and drill and tap the end to add an extension. but i dont have a steady rest for the lathe
06:53 PM sinned6915: or at least a legtimate one.
06:53 PM CaptHindsight: post a pic of the motor
06:53 PM sinned6915: will do
06:54 PM CaptHindsight: maybe mounting it by the back of the motor frame is not stable enough
06:55 PM CaptHindsight: https://www.cnc4pc.com/mount-bracket-clamp-65mm-diameter-for-spindle-motor.html
07:13 PM sinned6915: looking at this motor more closely, there migth be something in there already
07:13 PM sinned6915: its a brushed DC motor with a 4 pin connection
07:13 PM sinned6915: I always thought 2 pins were redundant
07:15 PM sinned6915: i hesitated to taking it apart, but i think i might have to
07:16 PM sinned6915: i thought that i was looking at the bearing through the hole
07:18 PM sinned6915: https://imgur.com/a/mDKPAts
07:19 PM sinned6915: sec for others
07:19 PM sinned6915: https://i.imgur.com/S0Oy3UW.jpg
07:22 PM sinned6915: https://i.imgur.com/skn4zyk.mp4
07:23 PM CaptHindsight: I'd clamp it nearer to the collect
07:31 PM sinned6915: k, thanks
07:52 PM skunkworks: sinned6915: omg - that looks just like the spindle moder on our terco
07:54 PM skunkworks: http://electronicsam.com/images/greenmachine/IMG_20201210_105253.jpg
07:55 PM skunkworks: I was planning on mounting an encoder up there - maybe an amt encoder (use a pressed in 1/8 or 3/16 pin..
07:57 PM skunkworks: (carefully drilling a hole in the existing center..)
08:00 PM skunkworks: sinned6915: we did something similar on the spindle motor for the K&T
08:00 PM skunkworks: http://electronicsam.com/images/KandT/conversion/spindle/Spindlemotorenc.JPG
08:12 PM CaptHindsight: sinned6915: lots of leverage if you only mount it by the back of the motor
08:12 PM CaptHindsight: i know it's only a small motor but that is how you get lots of flex
08:13 PM CaptHindsight: if it was a non-contact application you could get away with some of that
08:13 PM CaptHindsight: syringe vs spindle
08:13 PM CaptHindsight: or laser vs spindle
08:33 PM sinned6915: skunkworks: that IS the spindle motor on a terco
08:34 PM sinned6915: your vid was like a cattle prod on my behind to get this things back to life..
08:35 PM CaptHindsight: K&T
08:36 PM sinned6915: skunkworks: i have the original controller, programming station and some manuals too
08:36 PM sinned6915: Kearney & Trecker
09:06 PM Tom_L: skunkworks, that looks kinda cute on that big motor :)
09:16 PM skunkworks: sinned6915: you commented on the video then -didn't you
09:16 PM sinned6915: yes
09:17 PM XXCoder: Loetmichel: your coworkers? ;) https://youtu.be/uTjvehPI88E
09:20 PM skunkworks: Tom_L: it still is working.. Suprisingly
09:20 PM Tom_L: funny how some of the simple things just work
09:20 PM Tom_L: i didn't expect my encoder to live as long as it has
09:21 PM Tom_L: that's why i keep the tension off the belt
09:28 PM CaptHindsight: XXCoder: no blood, so doubtful
09:28 PM skunkworks: that was before we had a encoder directly on the spindle
09:28 PM XXCoder: capt true true heh
09:30 PM skunkworks: and he has 3 hands..
09:30 PM XXCoder: hah
11:58 PM Eric__: I found some wiring mistakes so I might not have 3 blown servo amps after all