#linuxcnc Logs

Jan 13 2022

#linuxcnc Calendar

01:58 AM CaptHindsight[m]: unterhausen: ping me if you ever get any success stories out of them
02:06 AM Deejay: moin
02:59 AM mrec_: Hi, I'm getting bad number format (trailing characters) parsing '-28.575.575' any idea what that really means?
03:00 AM mrec_: of course there's no such number in the g-code
03:01 AM mrec_: there's -28.575.575 but the line looks fine
03:01 AM mrec_: I even removed it and added the line manually again
05:09 AM Tom_L: why would there be 2 decimal points?
05:09 AM XXCoder: localization mess up maybe
05:10 AM Tom_L: morning
05:48 AM JT-Cave: morning
06:20 AM enleth: roycroft: to be frank, you can probably get an eeprom burner that fits in your pocket, works with any modern computer running any OS and costs peanuts, so the point of keeping the old ISA one is somewhat moot
08:00 AM JT-Cave: can someone create a test issue so I can see if I get an email https://github.com/jethornton/7i96/issues
08:02 AM XXCoder: done
08:02 AM JT-Cave: thanks
08:03 AM JT-Cave: Ok that is working for sure now
08:05 AM XXCoder: awesome :)
08:10 AM JT-Cave: for some reason I wasn't getting an email when an issue is created or there was so much traffic in the other email I just missed them
08:37 AM JT-Cave: XXCoder, did you get an email when I commented and closed the issue?
08:37 AM XXCoder: looking
08:37 AM XXCoder: report and close yeah
08:38 AM XXCoder: hope you enjoyed it heh
08:41 AM JT-Shop: thanks
08:49 AM mrec_: hmm those carbide aluminium endmills seem to suck
08:49 AM mrec_: the corners break too quick
08:49 AM XXCoder: welcome
08:49 AM mrec_: even the single flute endmills perform better
08:49 AM XXCoder: mrec carbide ALUM? interesting
08:49 AM JT-Cave: mine don't suck
08:50 AM XXCoder: be sure your machine dont hop
08:50 AM XXCoder: otherwise it will break endmills the way you discribed
08:52 AM mrec_: carbide endmills for aluminium
08:52 AM XXCoder: ahh ok. check your machine though
08:52 AM mrec_: I have other endmills which perform better even carbide.
08:52 AM mrec_: that particular aluminium is crap.
08:52 AM mrec_: that particular endmill for aluminium is crap.
09:08 AM perry_j1987: morning
09:09 AM perry_j1987: getting ready to thread mill after not doing it for a long while is terrifying
09:09 AM perry_j1987: lol
09:10 AM CloudEvil: :)
09:11 AM CloudEvil: First do some test holes in Brie.
09:32 AM Alicrow-phone: Can we power a servo driver board with a dc speed controller?
10:22 AM Alicrow-phone: Got a response from Mesa saying speed controllers don't filter the output and have pulses with peaks up to 165V, and thus would instantly kill the driver. Glad we asked.
10:35 AM roycroft: aah, it's my friday, and the rain has returned
10:35 AM roycroft: but it looks like we'll have a dry spell after today
10:40 AM skunkworks: pcw---home: yes you are right - if you look at the 2nd image from the patent - there is a 'relatively fixed phase supply' and '90deg displaced phase supply'
10:43 AM perry_j1987: c'mon UPS man
10:43 AM perry_j1987: i want my metal angles
10:45 AM CloudEvil: Ideally with no extra angles. Though that may be asking too much.
10:46 AM pcw---home: skunkworks: Yes, sort of a resolver backwards
10:47 AM skunkworks: So - I have some op-amps coming to drive it - using the resistor balancing circuit fromt he original board (re-made)
10:48 AM skunkworks: and an arduino to excite it and hopefully count the phase difference of the output signal.
10:48 AM skunkworks: initally it will be just to see what the output looks like and go from there.
10:49 AM pcw---home: sounds like fun
10:49 AM skunkworks: pcw---home: thinking of doing it all within linuxcnc - is there a way to measure the time or 'counts' between 2 edges on a mesa card?
10:50 AM skunkworks: (measuring the input 250hz signal phase difference with the output)
10:51 AM pcw---home: the encoder interface does this, but not in a useful way for time measurement
10:54 AM pcw---home: it would be pretty simple hardware wise (a start and stop input to a counter) and a latched count output
10:56 AM skunkworks: sure - the arudino is the plan.. it has a 16 bit counter that counts between triggers..
10:57 AM skunkworks: if I understand it right
11:00 AM skunkworks: baby stepping it ;)
11:07 AM skunkworks: Finally remembered seeing a patent..
11:07 AM pcw---home: a general purpose timer counter would be a nice hostmot2 module
11:10 AM skunkworks: that would be cool
11:20 AM JT-Cave: on a 7i95 does pwm spindle use step 5 and dir 5 pins?
12:43 PM pcw---home: JT-Cave, yes that would be the standard way to add one PWM/Dir pair
12:54 PM JT-Shop: pcw---home, thanks just fixing that in my 7i95 configuration tool
12:57 PM Alicrow-phone: Just ordered an old Sorensen rack mount variable power supply for the motors. 0-60V, 0-18A. Hopefully that'll do the trick.
01:08 PM pcw---home: JT-Shop, do you have a spare 7I95 for testing?
01:09 PM JT-Shop: no
01:11 PM pcw---home: I think I have one with a bad step/dir output I could send
01:11 PM JT-Shop: that would be a huge help
01:34 PM JT-Shop: 60°F and sunny
01:41 PM Tom_L: 61°F and sunny
01:42 PM Tom_L: better than that 9°F we had...
02:09 PM JT-Shop: I don't think we've been in single digits this winter... yet
02:12 PM Kyle85: I'm trying to get my head around HAL. Let's say you load a component in your primary HAL file:
02:12 PM Kyle85: loadrt or2 names=or2_x
02:12 PM Kyle85: Is there a way to load another or2 compenent from your post_gui.hal file? When I try to 'define/declare/load' another or2 component, even with a different name, linuxcnc throws an error saying it already loaded or2
02:13 PM Kyle85: If I have to modify the loadrt line in the primary HAL file that's pretty inconveinint. I'm trying not to touch the pncconf generated files...
02:13 PM JT-Shop: you have to use two pass
02:15 PM Kyle85: Unless im mistaken [HAL] TWOPASS = ON is in the ini file
02:15 PM Kyle85: maybe I'm looking at the wrong ini
02:17 PM JT-Shop: really once you get your configuration done you should not use pncconf anymore
02:18 PM JT-Shop: could be
02:18 PM Kyle85: does it matter if the offending HAL file is being called from the post_gui file like
02:18 PM Kyle85: source my_halfile.hal
02:19 PM JT-Shop: http://linuxcnc.org/docs/2.8/html/config/ini-config.html#_hal_section
02:19 PM Kyle85: maybe that's why twopass isn't working?
02:19 PM JT-Shop: I don't use that that method it's too confusing
02:19 PM JT-Shop: http://linuxcnc.org/docs/2.8/html/config/ini-config.html#_hal_section
03:07 PM perry_j1987: blah gah grumble
03:08 PM perry_j1987: cant wait till the new z axis is on here
03:12 PM unterhaus_: the university was selling some working 90" televisions for $200
03:12 PM unterhaus_: just imagine driving one with a pi4
03:12 PM perry_j1987: i have to figure out a different way to locate these holes i need to drill
03:13 PM perry_j1987: i cant fit the aluminum angles under the z axis in the machine vise
03:16 PM roycroft: mount it directly to the mill table
03:16 PM roycroft: or make a drill guide jig that you can clamp onto the angle and drill by hand
03:17 PM perry_j1987: ya i just got it maskingtape glued to my spoilboard
03:17 PM perry_j1987: gotta doublecheck i can reach it with the spot drill and the er20 collet not getting interfered by the sidewall angle
03:17 PM perry_j1987: otherwise wll have to mount it off the front of the table
03:18 PM roycroft: i've had parts too big to hold in place securely on my mill that needed to be drilled
03:18 PM roycroft: i've held them down as best i can, spot drill lightly on the mill, then move the parts to the drill press for the through drilling
03:19 PM roycroft: that can be very accurate - the spot drilling really helps locate the drills on the drill press
03:22 PM perry_j1987: ya
03:22 PM perry_j1987: my drill press needs to die though lol
03:22 PM perry_j1987: i just have a cheap harbor freight drill press with a chamfer bit in it for that only
03:22 PM perry_j1987: the table is not level and havnt figured a way to level it
03:23 PM roycroft: i'd be more concerned about the 0.087" spindle runout on a hf drill press than the table not being level :)
03:28 PM perry_j1987: lol
03:28 PM perry_j1987: maybe the 0.087" per 1/16th drop the table has equals out the spindle runnout haha
04:22 PM _unreal_: hello
04:41 PM t4nk_freenode: wellthheeeeereyouaaarrree!
04:41 PM t4nk_freenode: hi, great friend&buddy
04:42 PM t4nk_freenode: HELLO?
04:42 PM t4nk_freenode: you live?
06:17 PM skunkworks: pcw---home: https://photos.app.goo.gl/H2Teva7RUWvodeen7
06:20 PM Tom_L: :)
06:56 PM _unreal_: skunkworks, what is that?
06:56 PM _unreal_: aside from one hell of a resistor network
06:57 PM _unreal_: ve7it, hello
07:06 PM Tom_L: resolver interface i think
07:09 PM ve7it: _unreal_, hey... have you got a board fired up yet?
07:09 PM _unreal_: still need to solve a serial interface
07:09 PM _unreal_: right now I am messing with the encoders
07:12 PM ve7it: _unreal_, i am back... kernel update
07:13 PM _unreal_: hi
07:13 PM _unreal_: right now I'm messing with the encoders
07:14 PM _unreal_: trying to figure how I'm going to mount them to the motors
07:14 PM _unreal_: looks like I'm going to have to 3d print a mounting base
07:14 PM _unreal_: I dont seem to have any other choice. the existing mounting holes are only on the side
07:15 PM _unreal_: so I'll use those and "glue" the rest of it
07:21 PM skunkworks: _unreal_: trying to inteface some old position feedback hardware
07:21 PM _unreal_: fixing high quality servos
07:21 PM _unreal_: I had an ERROR in my hardware setup that I could not see my own fault. killed the encoders on the motors
07:21 PM _unreal_: dc servos
07:22 PM _unreal_: I had built the ve7it servo motor boards
07:22 PM _unreal_: never got to use them because something went wrong
07:22 PM _unreal_: now that I've finally TOTTALLY taken everything apart. I found the fault.
07:32 PM ve7it: _unreal_, 3d print a mount is a great idea
07:59 PM _unreal_: yep. generating a cad drawing now
07:59 PM _unreal_: to 3d print
08:00 PM roycroft: yay!
08:00 PM roycroft: amazon replaced the hard drives they misshipped me with 7 more of the same wrong drive!
08:00 PM roycroft: because when i tried to tell them why they sent the wrong drives they did not listen to me
08:01 PM roycroft: this time i pointed out to them that the drives they sent me cost more than 2x as much as the ones i paid for
08:01 PM roycroft: now they're interested in the problem
08:16 PM _unreal_: roycroft, I'm sorry you said something?
08:16 PM roycroft: i don't see that you should be apologising because i said something
08:16 PM XXCoder: roycroft: geez lol
08:16 PM roycroft: if anyone, i would be the one :)
08:17 PM roycroft: the world needs better vendors
08:18 PM roycroft: i have linear motion rails and a ball screw on their way for my z axis, _unreal_
08:18 PM roycroft: once they arrive and i measure them, i can finish my drawings for that part of the machine
08:19 PM roycroft: at which point you can rip me a new one for my lousy design
08:19 PM _unreal_: roycroft, I complained to amazon over there streaming service.
08:19 PM roycroft: they usually take really good care of me
08:19 PM _unreal_: I ended up putting "porn" on the TV on someting that was rated pg13
08:19 PM _unreal_: just what I wanted my 12yo daughter to see
08:20 PM roycroft: i have a business account, and they treat those much differently than they do consumer accounts
08:20 PM roycroft: i still have my consumer account, and still use it for personal stuff, so i can compare the quality of service in real time
08:22 PM _unreal_: roycroft, I can always lend a hand in design thoughts
08:22 PM _unreal_: the more insight the better
08:23 PM roycroft: when i'm ready i actualy do want you, and others, to critique it
08:23 PM roycroft: i'm not buying any metal to fabricate it until i have a design i'm happy with
08:24 PM roycroft: but i have the spindle, spindle mount, motor, vfd, and soon the linear motion parts
08:24 PM roycroft: all i'll have left to get are slabs of aluminium and fasteners
08:24 PM _unreal_: ve7it, I wish they had cad drawings of the base of these encoders. would make it less painful to generate a cad plan
08:24 PM roycroft: i have a partial model done now
08:24 PM roycroft: i don't mind posting that
08:25 PM _unreal_: I would in the mean time ensure all parts "control wise" function
08:25 PM roycroft: i'm at the point where i need to add the ball screw, which is why i want to get it before i proceed further
08:25 PM _unreal_: well you've seen my cad skills
08:30 PM ve7it: what is the encoder model number?
08:32 PM ve7it: _unreal_, https://www.cuidevices.com/product/resource/digikey3dmodel/amt31-series/amt313q-2500-6000-02-cw-s
08:33 PM roycroft: i really need to fix my imac
08:33 PM roycroft: it just paniced
08:33 PM _unreal_: amt103 or someting like that
08:34 PM _unreal_: it was the cheaper of the two that you had posted ve7it
08:34 PM _unreal_: regardless just finished the cad drawing
08:34 PM _unreal_: worming up cura
08:34 PM _unreal_: warming
08:34 PM ve7it: digikey seems to point to a whole pile of cad models
08:34 PM _unreal_: I think I got it
08:34 PM _unreal_: figers crossed
08:35 PM _unreal_: just need to print a 3mm tall base with like 10% infill
09:02 PM roycroft: this is what i'm working on: https://roycroft.us/Z-Axis-Assembly-Preliminary.jpeg
09:03 PM roycroft: the sides are there to mount rails for the independent dust shoe
09:03 PM XXCoder: boxed is nice for strength too
09:03 PM roycroft: which i'm not going to install right away, but want to accomodate without a major remodel
09:03 PM XXCoder: will it have top?
09:03 PM roycroft: yes
09:03 PM roycroft: i'm waiting for my ball screw to arrive before i add that
09:03 PM roycroft: i need to measure what i have
09:04 PM roycroft: it's a pretty conventional design
09:05 PM roycroft: the plate to which the spindle mount is attached will have oversize holes in all but the upper left corner, and it mates to another plate behind it
09:05 PM roycroft: i'll install a shoulder screw in the upper left corner, and then i can rotate the plate slightly around that screw to tram it in the x axis
09:06 PM roycroft: and i can install shims in the top or the bottom between the two plates to tram it for y
09:06 PM roycroft: i think that should work ok
09:11 PM _unreal_: ve7it, I dont think this encoder came with a "lock"?
09:12 PM _unreal_: shaft adapter
09:12 PM _unreal_: I have the sleeves but? not the shaft adapter lock
09:13 PM -!- #linuxcnc mode set to +v by ChanServ
09:13 PM _unreal_: found itnever mind
09:20 PM roycroft: so is my z axis design either so great or so horrible it's not worthy of comment, _unreal_?
09:22 PM _unreal_: have not made up my mind
09:22 PM _unreal_: heh
09:26 PM Tom_L: box won't get in the way?
09:26 PM Tom_L: i see it maybe as a chip trap
09:27 PM Tom_L: some day i need to modify mine a little bit
09:28 PM roycroft: there will be a dust boot that covers the area below the spindle
09:28 PM roycroft: i don't think much, if any chips/sawdust will get up above that
09:28 PM roycroft: my plan is for efficient and almost complete extraction
09:28 PM Tom_L: k
09:29 PM Tom_L: i covered my rails with neoprene and it has worked out really good
09:29 PM roycroft: i'm not refuting what you said
09:29 PM roycroft: i'm explaing the rationale behind my design decisions
09:29 PM Tom_L: may be fine, just an observation
09:29 PM roycroft: but this is my first cnc machine that i'll have designed and built
09:30 PM roycroft: i could be wrong on a lot of things
09:30 PM Tom_L: i don't use evacuation on mine but a spray mist coolant
09:30 PM Tom_L: coolant does wonders for the cutters
09:30 PM roycroft: you make metal swarf
09:30 PM Tom_L: yes
09:30 PM roycroft: i'll be making sawdust
09:31 PM Tom_L: oh this is the router
09:31 PM Tom_L: yeah you may not want coolant on that
09:31 PM Tom_L: :)
09:31 PM roycroft: yes it is the router
09:31 PM roycroft: and there will be coolant
09:31 PM roycroft: but it will be contained within the coolant sleeve surrounding the spindle motor
09:32 PM Tom_L: figure out how or where you will mount the dragchain etc for the lines?
09:32 PM roycroft: the main reason i'm using a water-cooled spindle is because i don't want any fans moving air around above the cotter
09:32 PM roycroft: not yet
09:32 PM Tom_L: mine was kindof an afterthought
09:32 PM Tom_L: but it worked good
09:32 PM roycroft: i started with the spindle motor
09:33 PM roycroft: and i'm designing my way away from that
09:33 PM Tom_L: this is sw?
09:33 PM roycroft: when i get my ball screw and determine how i'm going to connect it the motor i'll finish the z axis
09:33 PM roycroft: yes
09:33 PM roycroft: then i'll start on the x
09:33 PM roycroft: and i'll figure out where the dragchain for the z goes when i design the x
09:34 PM Tom_L: you might have to raise the rail mounts for ballscrew clearance... dunno
09:34 PM roycroft: you can't see it well in that drawing, but the back plate, on which the rails mount is 1" thick
09:34 PM Tom_L: k
09:34 PM roycroft: and i have a 1/2" deep groove in the middle of it for the ball nut clearance
09:34 PM Tom_L: iirc mine is about that on x
09:35 PM roycroft: i'm modeling as i go, and making sure there is clearance before i move on to the next part
09:35 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Assembly/X_Axis_endplate.jpg
09:36 PM roycroft: i don't have my solidworks vm on my laptop yet, and i'm sick of sitting in my office, so i'm probably not going to go back in there tonight
09:36 PM roycroft: but i'll get some other views showing the clearances when i get a chance, and post them
09:36 PM Tom_L: yeah some things are hard to show unless you're there
09:37 PM roycroft: that looks pretty beefy
09:37 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Mill_Steel/Assembly/X_Axis_limit1.jpg
09:37 PM roycroft: are those 25mm rails?
09:37 PM Tom_L: i think so
09:37 PM roycroft: i'm using 20mm
09:37 PM roycroft: i think they will be fine
09:37 PM Tom_L: 20 or 25
09:37 PM roycroft: and the ball screw for the spindle is 1605
09:37 PM Tom_L: mine is 16mm
09:37 PM Tom_L: probably the same
09:38 PM Tom_L: not sure on the rails
09:38 PM roycroft: when i add the independent dust shoe i'll be able to use 15mm rails and a 12mm ball screw
09:38 PM _unreal_: screw it I'm just reprinting it
09:38 PM _unreal_: the other one didnt infil as displayed at all
09:38 PM roycroft: or maybe i'll just use some threaded rod
09:38 PM roycroft: the dust shoe does not have to be positioned precisely at all
09:40 PM _unreal_: roycroft, you design is fine. I would only suggest changing the mounting plate that the spindle is mounted TOO.... extend that plate as a cantilever, the spindle should extend DOWN beyond the bottom of the z track
09:40 PM roycroft: _unreal_: i can just slide the spindle down
09:40 PM _unreal_: NOT reccomended
09:40 PM roycroft: it will extend below the bottom
09:40 PM _unreal_: look at your documents, they will suggest keeping the spindle mount at or below middle
09:41 PM _unreal_: and strongly suggest keeping the mount close to the bottom
09:41 PM roycroft: yes, and i can keep it below middle and still have the spindle nose well below the bottom of the mount
09:41 PM _unreal_: if you mount it high, you are relying on the CAN to take the flexure loads
09:41 PM roycroft: i'll move it down when i have the drawing open again
09:42 PM roycroft: that plate on the bottom, besides adding rigidity, is also a safety feature
09:42 PM roycroft: it will stop the spindle mount plate from going down too far
09:42 PM roycroft: so it will be impossible to crash the spindle into the spoilboard
09:43 PM roycroft: like if the motor gives out
09:43 PM roycroft: or the belt fails
09:44 PM roycroft: i have decided not to do a direct drive - there will be a timing belt and pulleys
09:44 PM roycroft: which will actually help balance the z axis
09:45 PM roycroft: since i'll eventually add the independent dust shoe, i'll need a second motor to operate that, so i can locate the spindle motor one one side and the shoe motor on the other
09:45 PM roycroft: the shoe motor will be direct drive
09:45 PM roycroft: i think
09:46 PM _unreal_: roycroft, what thickness are you building the main back plate that mounts the rails. what thickness is it and I'm assuming aluminum
09:46 PM roycroft: 1" thick 6061
09:46 PM roycroft: there will be a 1/2" thick slot down the center for ball screw/nut clearance
09:46 PM roycroft: the spindle mounting plates that sandwich together will be 1/2" thick each
09:47 PM _unreal_: the bottom cross member is not wrong but over kill then
09:47 PM _unreal_: 1" thick aluminum is NOT going to give very easy
09:47 PM roycroft: as i said
09:47 PM roycroft: it's a safety feature
09:47 PM roycroft: if the spindle slides down, that cross member will stop it
09:47 PM _unreal_: as stop yes
09:47 PM _unreal_: over kill but...
09:48 PM roycroft: it's a small bit of metal
09:48 PM _unreal_: I just mounted a hidden aluminum block behind my z and a SET stop block on the main plate
09:48 PM _unreal_: more then enough to stall out the steppers
09:48 PM Tom_L: i put one on the end of my X as you saw
09:48 PM roycroft: yes
09:48 PM roycroft: the only concern about that bottom plate is that it may interfere with the dust shoe mechanism
09:48 PM roycroft: in which case i'll eliminate or modify it
09:49 PM _unreal_: I would strongly suggest extending the z plate. and dont rely on sliding the spindle body down....
09:49 PM roycroft: i'm going to design the dust shoe lift mechanism before i build the z axis, even though i won't be adding it initially
09:49 PM _unreal_: you'll strain your bearings
09:49 PM roycroft: i don't see how it would strain the bearings
09:49 PM _unreal_: you have a perfect setup as designed from what I see
09:50 PM _unreal_: for doing the shoe
09:50 PM roycroft: if it's mounted too high my concerns are excessive vibration and difficult tramming
09:50 PM _unreal_: there are mini rails
09:50 PM _unreal_: 6mm
09:50 PM roycroft: that's all i need for the shoe
09:50 PM roycroft: it will weight next to nothing
09:50 PM _unreal_: you could look into, HIDE them under the main z
09:50 PM _unreal_: hence secondary "control
09:51 PM roycroft: i'm hoping to get this build by this summer some time
09:51 PM roycroft: so i have plenty of time to go slowly and play with different designs
09:51 PM roycroft: i won't even pretend that once it's built i'll be done with it
09:51 PM roycroft: especially since it's my first cnc machine
09:51 PM roycroft: i'm sure i'll be modifying it
09:52 PM roycroft: but i want it to be as close to ideal for my needs as possible on the initial build
09:52 PM Tom_L: i made a few changes after the design but it was mostly due to material availability since it was all built with scrap
09:53 PM Tom_L: actually for the most part material just happened to show up as i needed it
09:53 PM roycroft: i'm hoping i won't be making too many changes
09:53 PM roycroft: i may even decide to build the dust shoe mechanism as part of the initial build
09:53 PM Tom_L: the main X plate.. the heatsink for the drivers.. the brand new steel plate which had been dropped of that very day
09:53 PM _unreal_: Tom_L, its funny how that happens.
09:54 PM roycroft: but the changes i foresee possibly making will be maybe a higher voltage power supply or bigger motors
09:54 PM roycroft: that's really my main concern
09:54 PM _unreal_: I'm stuck on an off campus project right now thats driving me nuts. I HATE off campus projects
09:54 PM roycroft: i think i'll be able to design it to be reasonably rigid
09:54 PM Tom_L: _unreal_, 6' extruded heat sink was just laying there
09:54 PM roycroft: that z axis is at least 2x as massive as what i initially envisioned
09:55 PM _unreal_: roycroft, the new machine I want to bild for home will have around 5" plunge
09:55 PM _unreal_: its why I'm working on trying to get these servo drives going
09:55 PM Tom_L: you need more than that for a mill
09:55 PM _unreal_: Tom_L, my current cnc has 1.5" z
09:55 PM roycroft: i'm not 100% certain what i'll get yet, but it will be between 100mm and 125mm
09:55 PM Tom_L: i would be lost
09:56 PM _unreal_: then again its a small desktop mill
09:56 PM roycroft: i'll have a better idea when my ball screw arrives
09:56 PM Tom_L: put a vise under it etc and any length of tooling and your z is gone
09:56 PM skunkworks: pcw---home: top trace - 1 of the 2 square waves out of the arduino. Bottom 2 traces are the push pull power op-amp outputs to drive one coil. (currently using a +/-5v supply)
09:56 PM skunkworks: '
09:56 PM skunkworks: https://photos.app.goo.gl/zUXJ25AXWBKo1fm17
09:56 PM Tom_L: skunkworks, that's not a resolver?
09:56 PM Tom_L: i thought it was..
09:56 PM _unreal_: Tom_L, the new build will be soo much better then my current machine
09:57 PM skunkworks: kinda a resolver in reverse.
09:57 PM Tom_L: skunkworks, ps i'm a bit jealous of your scope :)
09:57 PM _unreal_: Tom_L, I'm still torn though between the bldc drives I have and the DC servo system
09:57 PM skunkworks: Tom_L: I love it.
09:57 PM _unreal_: hence I'm trying to get the servo working.
09:57 PM Tom_L: skunkworks, did you do the 100Mhz mod/
09:57 PM Tom_L: ?
09:58 PM _unreal_: I have a 100watt dc servo that will be wonderful for Y axis
09:58 PM skunkworks: Tom_L: yes
09:58 PM Tom_L: no issues?
09:58 PM skunkworks: I barely know how to use it. It has so many menus.
09:58 PM Tom_L: heh
09:58 PM skunkworks: Tom_L: no issues.
09:58 PM Tom_L: i've got an old 100Mhz analog scope
09:58 PM skunkworks: coming from a 20mhz? 80's vintage B&K..
09:59 PM _unreal_: I've got that new age digital scope
09:59 PM _unreal_: I think it does upto 20mhz?
09:59 PM _unreal_: but it also has usb connection. so I can hae a full scope on PC
09:59 PM _unreal_: not that I'll ever use it
10:00 PM skunkworks: we have a techtronics.. about the same vintage..
10:00 PM Tom_L: those were good
10:00 PM Tom_L: mine is a phillips
10:00 PM Tom_L: haven't had it out in ages
10:00 PM roycroft: i have a tektronics 465b
10:01 PM skunkworks: Tom_L: https://youtu.be/llwq5QKDgWo
10:01 PM roycroft: which i think is great for an analog 'scope
10:01 PM roycroft: it's 100MHz as well
10:02 PM skunkworks: analog scope does ^ way better - but I was amazed it did it that well
10:02 PM Tom_L: yeah pretty cool
10:03 PM roycroft: if i were seriously doing electronics work i'd be using both an analog and a digital 'scope
10:03 PM Tom_L: yeah i don't do that much nowdays but if i did i'd get one of those rigols
10:04 PM skunkworks: I have been getting spoiled with the 'auto' button.
10:04 PM Tom_L: i've got an older saleae la
10:04 PM roycroft: what i have is more than adequate for my needs
10:04 PM skunkworks: hook the probes up - hit the auto button - 98% it is perfect.
10:08 PM skunkworks: ok - maybe 80%
10:39 PM Tom_L: so messin with sw a bit.. circular pattern in sketch, does it not keep the pattern info in case i want to edit the pattern?
10:39 PM Tom_L: catia does :)
10:46 PM _unreal_: ve7it, got the first motor setup
10:46 PM _unreal_: with the encoder
11:56 PM unterhaus_: Tom_L sw == solidworks? You definitely can edit patterns