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[02:25:06] <archivist> machine measuring gold
http://www.ebay.co.uk/itm/172469801353?ul_noapp=true but I dont believe "absolutely new" claim
[02:27:10] <IchGucksLive> good morning from a slippy road conditions germany
[02:27:29] <XXCoder> soon to be morning from ice cold (but no ice) usa
[02:28:15] <IchGucksLive> car accident is not the most harm in the USA
[02:28:49] <IchGucksLive> this morning news reported the total fatals in the usa in 2016
[02:29:07] <IchGucksLive> chicago got 762 people shot
[02:29:29] <IchGucksLive> the total count is beond 25k
[02:29:38] <XXCoder> guns usa people addicted to it
[02:29:58] <XXCoder> know whats funny?
[02:30:06] <XXCoder> 3% of people own 50% of guns in usa
[02:30:21] <XXCoder> 78% of people in usa dont own any gun
[02:30:22] <IchGucksLive> here it is even higher
[02:30:56] <XXCoder> so 50% of guns is owned by 3% of people, and other 50% is owned by 19% of people in usa
[02:30:58] <XXCoder> crazy.
[02:31:42] <IchGucksLive> its not the gun that makes the thred its the peole behind it
[02:32:25] <IchGucksLive> ok im off winter walk today
[02:32:31] <XXCoder> have fun
[03:17:20] <gameguard> hellow
[03:17:22] <gameguard> world
[03:17:44] <XXCoder> hellow
[03:28:22] <Deejay> moin
[03:28:38] <XXCoder> yo
[04:21:24] <brianx> they announce highway fatalities on big overhead signs in chicago. 762 is less than the accident fatalities.
[04:42:35] <gameguard> l
[05:57:28] <jthornton> morning
[05:59:49] <_methods> back to the grind
[06:01:18] <archivist> sod that...retired
[06:02:11] <jthornton> self employed work everyday
[06:03:33] <archivist> I found out I could retire early :)
[07:28:00] <_methods> https://www.youtube.com/watch?v=mV_1dvk0ugM
[07:28:04] <_methods> turning in jello
[07:31:29] <gregcnc> heh i saw that one a while ago, it's fine until software stabilization takes over
[07:38:18] <_methods> hah i thought they attached teh cam to the head or something
[07:52:22] <Wolf_> lol how to break youtube stabilization
[07:53:30] <gregcnc> software tries to figure out what's not moving, but it was wrong this time
[08:05:26] <ToddZ> The news last night said that 762 is more than the total for New York and LA combined.
[09:45:18] <MacGalempsy> mornign
[09:45:55] <Wolf_> morning
[09:46:12] <MacGalempsy> get any sleep last night Wolf_?
[09:46:20] <Wolf_> some
[09:46:45] <Wolf_> been up since 5am… yay
[09:46:59] <MacGalempsy> that line in Elf is great. "I got a whole 40 minutes last night!"
[09:48:10] <Wolf_> I got 4-5 hrs in
[10:03:01] <Jymmm> jthornton: I like the chain hoist addition
[10:05:34] <MacGalempsy> this lathe looks rough. can anyone tell me if they know which model it might be?
https://photos.google.com/share/AF1QipN-vNG1xFqt25DMM-LF5xsO1x3Dxy1Mqh3oT_5vjvuLQ2VZ5YnYsB-Cs3qmDjw6JQ/photo/AF1QipOSsSkDLbDrrcpAC-LouEMC-U7nEVMSJT3jx5_v?key=SW1MSzBMcG5iN3R2LS1JTF9Jd2dhZTZZUzFwMlZB
[10:05:49] <MacGalempsy> its supposedly a south bend
[10:07:34] <gregcnc> http://www.lathes.co.uk/southbend9-inch/
[10:09:42] <MacGalempsy> thanks gregcnc it is pretty old...
[10:09:53] <MacGalempsy> they want 750 and that is a laugh
[10:10:26] <gregcnc> most anything with flat belts is old
[10:10:57] <MacGalempsy> im thinking 200 is more like it
[10:14:11] <MacGalempsy> gregcnc: you think messing with that is a waste of time?
[10:14:45] <gregcnc> if you have time to clean it up, sure
[10:17:25] <Jymmm> Turbo Molecular pumps ?!
[10:18:21] <gregcnc> MacGalempsy if the price is right and it has change gears, steady tons of info on those
[10:21:47] <MacGalempsy> one of the posts says Grizzly bought South Bend, is that true?
[10:22:07] <gregcnc> someone bought the name
[10:22:30] <gregcnc> i don't know the details
[10:23:01] <gregcnc> so yeah, you can buy new made in china South Bend Machinery
[10:23:01] <MacGalempsy> sounds like a good marketing strategy
[10:24:02] <roycroft> grizzly bought south bend a decade or more agon
[10:24:03] <roycroft> ago
[10:24:29] <roycroft> and yes, they moved manufacturing to asia
[10:24:48] <roycroft> south bend were going out of business at the time - grizzly actually saved them
[10:25:08] <archivist> they kept the historical notes
[10:25:09] <roycroft> i'm not saying i'm happy they moved manufacturing overseas
[10:25:43] <gregcnc> nobody could afford one made here
[10:25:45] <roycroft> just pointing out that they did not "take away" any jobs
[10:25:50] <archivist> and I can tell from mine, they wear
[10:26:24] <gregcnc> archivist a new SB or 100yo?
[10:26:38] <archivist> 1940's
[10:27:02] <gregcnc> i'd expect some wear in that time, no?
[10:27:12] <archivist> bed and saddle slide way wear
[10:27:34] <archivist> sure, especially if it did a lot of work :)
[10:27:48] <MacGalempsy> that is what was of concern about that one above. its in one of the highest humidity areas in the US
[10:28:18] <archivist> you could get the bed reground
[10:28:46] <archivist> I had to get a new leadscrew nut to make mine usable
[10:29:35] <gregcnc> there isn't much point in grinding the bed of a <2000USD lathe
[10:30:19] <archivist> well then you have the basis of an expensive lathe :)
[10:30:46] <archivist> I do get some good work off mine despite the wear
[10:31:02] <gregcnc> maybe if you expect a lot of use and have tons of tooling for it
[10:32:49] <archivist> must finish painting mine
http://www.collection.archivist.info/searchv13.php?searchstr=southbend
[10:39:59] <roycroft> http://eugene.craigslist.org/tls/5937790197.html
[10:40:05] <roycroft> that got posted late last week
[10:40:10] <roycroft> it looks potentially interesting
[10:42:53] <roycroft> there's likely something seriously wrong with it though - any lathe that is in good shape for a good price sells almost instantly
[10:46:00] <SpeedEvil> Go and have a visit, or call.
[10:50:59] <MacGalempsy> roycroft: are you in eugene?
[10:51:09] <roycroft> i am
[10:51:25] <MacGalempsy> cool. my granny is in Florence and pops is in Bend
[10:51:49] <roycroft> i'm right in between them
[10:52:37] <MacGalempsy> is the Shop Fox the same as Grizzly? They appear similar
[10:53:11] <MacGalempsy> archivist: that SB looks heavy
[10:53:33] <roycroft> no, they aren't, although grizzly carry some shop fox products
[10:54:07] <roycroft> most of the "clone" machines are made from the same castings
[10:56:03] <roycroft> in the early days of chinese machine clones, a lot of the machines were 1% smaller than the us-made machines they were cloning
[10:56:15] <archivist> MacGalempsy, extra 1/2 ton of base :)
[10:56:22] <roycroft> a specimen of the actual us-made machine was used as the pattern for the castings
[11:02:35] <MacGalempsy> archivist: do you have an overhead hoist system, or did you roller that one in?
[11:21:02] <roycroft> http://eugene.craigslist.org/bfs/5942466546.html
[11:21:05] <roycroft> there's a nice project
[11:21:12] <roycroft> i love the automatic tool changer
[11:22:20] <Wolf_> floppy drive!
[11:23:02] <roycroft> i can afford that machine
[11:23:09] <roycroft> but i don't have room for it by any stretch
[11:23:17] <roycroft> i'd have to build a new shop for it
[11:23:40] <Wolf_> looks kinda tall for my shop
[11:23:49] <MacGalempsy> anyone in here ever build a smoothing capacitor circuit?
[11:24:12] <cradek> someone replaced the paper tape reader with a floppy thing
[11:24:31] <roycroft> yes, they upgraded it to floppy drive
[11:24:31] <cradek> high tech
[11:24:56] <cradek> in 40 years nobody cut into the table
[11:25:27] <roycroft> it's cnc!
[11:25:32] <cradek> nc
[11:25:41] <cradek> oh it does say cnc!
[11:25:45] <roycroft> as long as you write good g-code you'll never cut the table
[11:25:49] <cradek> ha
[11:26:00] <cradek> as long as write good g-code and you never set an offset wrong
[11:26:12] <Wolf_> long as the operator touches off on the right place
[11:26:27] <roycroft> as long as everything goes right for 40 years
[11:26:52] <cradek> that's the ticket
[11:26:56] <Wolf_> I dusted my vice once…
[11:27:03] <roycroft> that thing probably weighs 8 tons
[11:27:06] <Wolf_> and cut a parallel in half...
[11:27:09] <roycroft> moving it would be challenging
[11:27:56] <cradek> head is counterbalanced with air
[11:28:22] <Wolf_> glad none of these things are close to me, or I would be trying to figure out how to fit it in my garage
[11:28:44] <roycroft> it's exceedingly rare that big old iron is available around here
[11:28:58] <roycroft> and even more rare that it's available for a good price
[11:29:22] <roycroft> that mill is just down the road from me
[11:29:27] <Wolf_> seems to be dry in this area…
[11:29:56] <Wolf_> or I just haven’t been looking enough
[11:30:09] <roycroft> if i were going to equip a shop with used old american big iron i'd rent a house somewhere in the rust belt for a half year and spend my time shopping around there
[11:30:25] <roycroft> ohio or pennsylvania would be good places to set up base camp
[11:30:31] <archivist> MacGalempsy, I roller stuff around
[11:30:54] <Wolf_> I haven’t even seen much out of PA (I’m just south of)
[11:31:18] <roycroft> but locating there would be kind of in the middle of the rust belt
[11:31:25] <roycroft> giving one easy access from michigan to connecticut
[11:31:43] <roycroft> i see a lot of good deals on stuff back there
[11:32:01] <roycroft> old bridgeports that go for $5k here can be had for $1.5-2k back east
[11:32:27] <Wolf_> someone pointed me to a VMC for $1500 in VA, never got a reply on that ad =(
[11:32:53] <Wolf_> and I haven’t seen any bridgeports for that cheap either
[11:33:13] <MacGalempsy> from what I understand, a lot of it has been shipped to China already. a friend of mine was buying equipment for $1/lb and shipping it down the Mississippi to NOLA. when Katrina hit, his warehouse flooded and everything was pitted
[11:33:49] <roycroft> note that i said i'd hang out for half a year
[11:33:49] <roycroft> i'm not saying one can wander in and fill up a container with machinery right away
[11:34:02] <roycroft> but there is much greater availability in the rust belt than in the northwet
[11:34:48] <Wolf_> CL right now for me
http://chambersburg.craigslist.org/hvo/5909802898.html and
http://martinsburg.craigslist.org/tls/5926313517.html
[11:35:53] <Wolf_> and this has been on there for well over a year
http://washingtondc.craigslist.org/mld/tls/5932471506.html lol
[11:35:54] <MacGalempsy> the St Louis and Illinois CL always seem to have a lot of machinary
[11:43:47] <MrSunshine> https://www.facebook.com/media/set/?set=a.10154899439923648.1073741840.682103647&type=1&l=2780f7fa4c new machine in the making =)
[11:43:56] <MrSunshine> a tad bit stirdier than my old :P
[11:46:11] <Wolf_> how are checking the straightness of the tube stock
[11:47:51] <MrSunshine> did the link come through ? =)
[11:47:58] <Wolf_> yeah
[11:48:13] <Wolf_> how are you checking the straightness of the tube stock?
[11:48:14] <MrSunshine> oki =)
[11:48:22] <MrSunshine> Wolf_: machine level
[11:48:35] <MrSunshine> then there will be more added and scraped in =)
[11:48:57] <MrSunshine> just checking so im within 0.1mm or so over the table and beams =)
[11:49:35] <Wolf_> ahh ok, as much welded tube as I have used, I know that stuff isn’t really flat nor straight
[11:49:51] <MrSunshine> nope .. =)
[11:49:58] <MrSunshine> but so far im quite happy with the stock i got =)
[11:50:11] <MrSunshine> then alot of creative welding :P
[11:50:17] <Wolf_> but truck parts I make from it don’t care lol
[11:50:19] <MrSunshine> check if something is off .. weld to twist it back
[11:50:56] <MrSunshine> wait until everything settled ... check again .. etc ... last part is the braces ... then its locked .. will be "fun" :P
[11:52:03] <Wolf_> I plan to do a cnc plasma table with square tube, only thing eluding me is how to have a straight long axis run lol
[11:52:25] <MrSunshine> thc :P
[11:52:49] <Wolf_> thats the short axis =P
[11:53:00] <Wolf_> Z and gantry are easy
[11:53:24] <Wolf_> the 8+ foot table is the one I’m thinking about
[11:54:32] <MrSunshine> bought some stock to make 1.8 meter straight edge also today .. will be a fun scraping job :P
[11:55:13] <MrSunshine> just need to get some sheet metal .. like 5mm thick or something to make it a strong back =)
[11:56:00] <Wolf_> yeah, I’m looking at how to make a 2.5m axis straight side to side
[11:56:29] <MrSunshine> some kind of straight edge and machine level i guess =)
[11:56:54] <Wolf_> level doesn’t work sideways lol
[11:57:17] <MrSunshine> for the uprights ?
[11:57:23] <MrSunshine> just use a square to put it on =)
[11:57:35] <MrSunshine> ahh
[11:57:38] <MrSunshine> now i get it :P
[11:57:49] <Wolf_> lol yeah, long axis for the gantry to run on
[11:58:30] <sync_> hm MrSunshine, 2000mm straight edges are like 150€, I would not make one myself
[11:58:41] <MrSunshine> 150 euro ?!
[11:58:43] <MrSunshine> where?!
[11:59:18] <MrSunshine> sync_: and im thinking strongbacks ... so they can hold themselves straight :P
[12:00:34] <sync_> well, straight edges have the bessel points marked on them so they will be straight and they are like 60x12mm in that size, they are fairly rigid
[12:03:21] <Wolf_> mine should be a fun build… going to be a heavy damn table
[12:04:01] <MrSunshine> the steel in mine will be about 300kg or so i think =)
[12:04:16] <MrSunshine> sync_: well where do you find these? =)
[12:04:42] <Wolf_> mine need to be built for cutting 1.21m x2.43m x 12.7mm sheet metal
[12:07:47] <sync_> MrSunshine: local tooling supplier
[12:10:54] <MrSunshine> found a company in sweden that sells camelbacks ... tho they were a bit pricy but could be worth it having one ... but had to ask for price for the ones over 1 meter
[12:27:25] <MacGalempsy> well, the mystery of the difficult servo tuning may be solved...
[12:27:50] <MacGalempsy> the servo transforming loop is missing the regulation half...
[12:34:14] <Wolf_> that sounds like a problem
[12:47:40] <MacGalempsy> so I just dug around in the garage and could not find the board with the components. and priced out on Mouser, they cost $30
[12:48:03] <MacGalempsy> time to dig around a little more.
[12:48:34] <MacGalempsy> its funny how everything has their place until reorganizing takes place
[12:48:58] <Wolf_> yup
[12:49:17] <Wolf_> usually right after I clean up everything I can’t find shit
[12:49:48] <gregcnc> the key is explaining to the wife that "cleaning up" is reorganization and problematic
[12:50:48] <gregcnc> unless of course you're so organized that you put something down and it disappears
[12:51:07] <Wolf_> that happens as well
[12:51:11] <archivist> barcode the items and make maps of where stuff is
[12:51:29] <Wolf_> right now I have the more stuff then I have room issue
[12:51:49] <Wolf_> and guy I work with migrates tools from my shop to the other shop
[12:52:06] <gregcnc> i need more drawers
[12:52:24] <Wolf_> so fun things happen like I go to use my mig welder and the wire is missing out of it
[12:52:25] <archivist> my finding time for the barcoded stuff is minutes, else months
[12:57:31] <IchGucksLive> hi
[12:57:42] <IchGucksLive> nice day today in germany
[13:01:56] <roycroft> have a happy and properous new year
[13:06:52] <FAalbers> You too roycroft
[13:09:52] <roycroft> i'm hoping mine is finally cnc-riffic
[13:10:43] <roycroft> i am researching stepper motor drivers right now
[13:10:52] <roycroft> i really would like a driver per axis
[13:11:02] <roycroft> but the gecko 540 is so cost effective i might end up getting that
[13:11:10] <roycroft> i generally dislike all-in-one devices
[13:12:41] <IchGucksLive> roycroft: use TB6600
[13:12:45] <IchGucksLive> 5USD
[13:12:53] <IchGucksLive> at 3Nm
[13:13:04] <IchGucksLive> on 36V 2A steppers
[13:13:10] <IchGucksLive> best to go for
[13:13:33] <MacGalempsy> well, I must have tossed it...carajo
[13:14:20] <MacGalempsy> fortunately, someone posted a schematic in the forums, so its just going to take ordering the parts and putting it all together
[13:18:01] <roycroft> those are pretty inexpensive
[13:18:03] <roycroft> not much power
[13:18:10] <roycroft> but there's an hq version that's 50v/5a
[13:18:42] <roycroft> i don't know enough about stepper drivers at this point to know the difference between that and the gecko stuff
[13:18:48] * roycroft is learning/relearning quickly
[13:20:07] <Wolf_> I need to save up some dollars and get some mesa stuff
[13:21:43] <roycroft> i've sorted that part out
[13:22:07] <roycroft> 5i24 and 7i76
[13:23:03] <Wolf_> looking at 7i92 and 7i77, have my BLDC servos and drivers already
[13:23:16] <Wolf_> still need a power supply
[13:24:33] <roycroft> my electronics cabinet will be mounted in the same rack as my cnc computer
[13:24:39] <Wolf_> and to figure out what I’m going to do for a THC
[13:24:53] <roycroft> i don't think an ethernet based i/o card is necessary in that application
[13:25:06] <roycroft> but if it were at all remote i can see the benefit of that
[13:26:13] <Wolf_> I just need to be different lol
[13:26:31] <roycroft> the 7i92 costs less than the 5i24
[13:26:37] <roycroft> so that's a consideration, i suppose
[13:27:00] <Wolf_> and i’m using a mini-itx in a 1u case
[13:27:17] <Wolf_> no room for a card
[13:31:05] <_methods> https://www.youtube.com/watch?v=RepARd6db7c
[13:31:08] <_methods> that's funny
[13:31:15] <_methods> made in china vs made in germany
[13:37:02] <IchGucksLive> Wolf_: the 7i92 is a ethernet
[13:37:51] <IchGucksLive> Wolf_: the THC is best external to go UpDown like a eagle one
[13:38:01] <IchGucksLive> you need only 2 pins
[13:38:09] <IchGucksLive> the rest is software
[13:38:24] <IchGucksLive> workes perfect here
[13:38:37] <IchGucksLive> on 6 plasmas the same one
[13:39:18] <IchGucksLive> as you got mesa you vcan connect all the pins
[13:39:48] <IchGucksLive> and maybe go for the mesa thc that makes al a littel cheeper
[13:40:15] <IchGucksLive> im off
[13:40:18] <IchGucksLive> GN8
[14:04:44] <MacGalempsy> heh. the terminal blocks are just about 1/2 of the component cost...
[14:48:01] <enleth> is it possible to use a vanilla classicladder editor from the standalone classicladder package instead of the one bundled with linuxcnc?
[14:48:42] <enleth> the bundled one is even more ugly and clunky than the vanilla editor, which is an achievement of sorts in and of itself
[14:49:38] <skunkworks> Most likely because the version of classic ladder take for linuxcnc is a bit older than the current one
[14:50:04] <enleth> there are some customizations in it, which is why I'm asking
[15:00:01] <Tom_L> JT-Shop, any updates to test?
[16:14:53] <Deejay> gn8
[16:36:35] <BeachBumPete> http://i.imgur.com/lSWRsf9.jpg WooHoo my new MPG wheels finally arrived. Honestly I was not expecting much from the price but they are quite nice actually...
[16:40:02] <andypugh> I prefer the black ones.
[16:40:29] <BeachBumPete> Oh yeah... I saw those and thought they looked cool but was concerned the finish would wear off
[16:41:51] <BeachBumPete> Like I said I expected a real plastic piece of shit for the price this is quite heavy for its size and feels solid. We shall see how it performs. I have been HATING not having the wheel on the VMC for awhile. I will unfortunately have to make an adapter ring to mount this because the old wheel is a bit wider diameter.
[16:44:59] <sync_> I like the magnetic ones better
[16:47:41] <MacGalempsy> if anyone is savy on circuit design, it would be much appreciated if you could take a look at this post and reply.
https://forum.linuxcnc.org/30-cnc-machines/27204-light-machine-corp-benchman-xtr-retrofit?start=140#85174
[16:48:33] <MacGalempsy> BeachBumPete: what are you going to use for a step and axis selector?
[16:49:38] <BeachBumPete> I used to think all of them were magnetic but apparently these new ones are solid state.
[16:49:40] <andypugh> MacGalempsy: I think that your conclusion that the unregulated supply is the problem might be wrong.
[16:50:06] <BeachBumPete> Mac no idea really I just burnt up my MPG wheel by putting too much DC voltage into it so I had to replace it.. DOH
[16:50:20] <MacGalempsy> andypugh: oh.
[16:50:25] <andypugh> The drives are probably current-controlled so don’t really care (within limits) about the voltage
[16:50:49] <MacGalempsy> why would the original part have a smoothing circuit?
[16:51:27] <MacGalempsy> just standard practice?
[16:51:28] <andypugh> Ah, wait. You have no smoothing caps at all at the moment/
[16:51:33] <MacGalempsy> right
[16:51:56] <andypugh> So, transformer to rectifier(?) to drives?
[16:52:00] <MacGalempsy> yeah
[16:52:16] <andypugh> You have a rectifier, yes?
[16:52:35] <MacGalempsy> yes. the stuff in the upper color drawing are what is existing
[16:52:42] <Kevin`> is it running from single phase? if there's zero current and you are at a zero crossing point there's no power available, hence an absolute requirement for smoothing caps. three phase less so.
[16:52:46] <MacGalempsy> the missing stuff is the schematic
[16:52:47] <sync_> BeachBumPete: no, there are wheels with magnetic indentations
[16:52:57] <sync_> those feel very nice
[16:53:04] <sync_> (and cannot wear out)
[16:53:28] <andypugh> Neither part of the diagram shows a rectifier
[16:53:52] <MacGalempsy> i belive it is the part that is labled terminal block
[16:54:04] <MacGalempsy> i made that drawing very early
[16:54:19] <andypugh> Ah, you see, that confused me. I would be rather expecting it to say “rectifier”
[16:54:20] <sync_> I wouldn't think that the supply needs to be regulated
[16:54:20] <BeachBumPete> Sync I understand that
[16:54:49] <MacGalempsy> I would change that, but the original files were lost when the computer went down this summer and everything was lost
[16:55:13] <andypugh> R11 is a discharge resistor?
[16:56:11] <andypugh> Which caps are you looking at for C1 and C2?
[16:56:30] <MacGalempsy> not sure. my knowledge is so limited, that is why im posting before buying
[16:56:43] <andypugh> You want some fairly low-ESR ones.
[16:57:10] <MacGalempsy> ok. will make note
[16:59:30] <MacGalempsy> andypugh: the schematic that was offered up by another member does not get to the detail of individual component specs. if I wasnt such a bonehead, I would still have the original board
[16:59:37] <MacGalempsy> and just pirate the pieces off that
[17:00:15] <andypugh> Do you know what the total servo current is?
[17:01:03] <MacGalempsy> hmmm. it will take some digging. somewhere I have the header pin info for each amp
[17:01:24] <andypugh> From that you can work out the ripple for a given capacitance.
[17:01:27] <MacGalempsy> I know the a axis is 20A peak and 5A continuance
[17:02:19] <andypugh> So, lets say 50A total peak?
[17:02:39] <MacGalempsy> one of the fuses in the smoothing circuit was rated for 40A
[17:08:19] <andypugh> This might be useful:
http://www.skillbank.co.uk/psu/smoothing.htm
[17:09:22] <andypugh> Though that is suggesting that at 50A and 2 x 3300uF caps your 50V voltage will vary by 75V, which might be a problem.
[17:11:41] <andypugh> This calculator here is fun to play with:
http://www.changpuak.ch/electronics/power_supply_design.php
[17:11:55] <MacGalempsy> is it possible to measure the ripple directly at j9?
[17:13:38] <andypugh> Not at the moment, it will be full-scale current.
[17:14:07] <andypugh> (Are there any big caps in the servo drives themselves?)
[17:16:10] <MacGalempsy> no.
[17:16:52] <MacGalempsy> I guess its just idiotic luck that they are working at all
[17:17:32] <andypugh> I think we need to decide that the peak current is less than 50A.
[17:17:49] <andypugh> Because 50A ends up needing a huge capacitor
[17:20:04] <MacGalempsy> there are 2 or 3 other people in the forum with the same board, so if any additional info is needed, they would probably help out
[17:20:06] <andypugh> http://www.mouser.co.uk/ProductDetail/EPCOS-TDK/B41560A9109M/?qs=sGAEpiMZZMtZ1n0r9vR22W%252bftpzh3LyOR8wMuB2rMNI%3d are not as spectacularly expensive as some, rated for 20A ripple current.
[17:20:55] <andypugh> Though, now I look, only 10,000uF
[17:29:22] <MacGalempsy> andypugh: so do you think it can just be smoothed with a single capacitor, or do you think I should attempt to duplicate the circuit that was used by the OEM?
[17:30:02] <andypugh> I think using two is likely to be better, typically less total ESR, for example.
[17:33:11] <MacGalempsy> it is curious that the original circuit has the extra stuff
[17:35:10] <andypugh> It’s making a 24V supply isn’t it?
[17:35:29] <andypugh> (I haven’t tried to understand anything past the filter stage)
[17:35:57] <MacGalempsy> the output from the rectifier is 48V. the schematic states voltage to the drives is ~50V
[17:36:19] <MacGalempsy> when I put that schematic into a simulator, it came out 48v
[17:39:17] <andypugh> 48 ≈ 50
[17:40:03] <MacGalempsy> steve-a said he got a 72V transformer to use on his, but he paid like $200 and it doesnt fit in the case
[17:41:13] <andypugh> 72V sounds like too much for 50V servos
[17:42:08] <MacGalempsy> the drives are rated to 90v, but perhaps that is why he is having limited sucess on servo tuning
[17:59:04] <andypugh> Goodnight all
[18:00:32] <Kevin`> MacGalempsy: is the output from the rectifier *measured* 48v when unloaded and with a filter cap? if so the nominal output is likely significantly less
[18:01:45] <MacGalempsy> Kevin`: no caps atm
[18:03:04] <MacGalempsy> this is what I am reading now to try understanding the scematic better
http://www.learningaboutelectronics.com/Articles/How-to-build-a-DC-power-supply.php
[18:26:00] <Kevin`> MacGalempsy: you also need the schematic for the lm317. although the schematic is actually lower performance (regulation-wise) than an lm317 and has less parts
[18:29:05] <MacGalempsy> Kevin`: will keep that in mind
[18:29:25] <enleth> this might be a dumb question, but - is it possible to hot-reload a hal config while linuxcnc is running?
[18:31:38] <Duc_mobile> Im curious about this also
[18:34:22] <JT-Shop> enleth: not that I know of... but I might be wrong
[18:34:54] <JT-Shop> I would look in the calibration program for clues
[18:54:08] <fritzgutten> if i see this in a net command: pid.0.feedback <= motion.spindle-speed-in <= scale.0.out
[18:54:37] <fritzgutten> am i seeing a signal from pid to motion and to pid?
[18:54:45] <fritzgutten> dammit, sorry
[18:54:54] <fritzgutten> scale to motion to pid?
[19:03:12] <Flipp_> anyone have experience with flyback transformers?
[19:39:55] <owhite> greetings everyone. I’ve been using linuxcnc for a while, and I’d like to have it communicate with a raspberry PI via a python component - what are my options for linking it via some port on my linux box?
[19:44:06] <BeachBumPete> Woohoo after some careful hand work with my 50000 RPM air pencil die grinder I got the new MPG installed, then I carefully adjusted the output of that new DC buck board I installed recently to 4.9VDC with the help of my lovely assistant. Then I hooked it up to the machines inputs and VOILA we have a working MPG again thank the good Lord :)
[19:52:12] <gameguard> hlp
[20:11:32] <R2E4> Hi all
[20:11:50] <pfred1> hi
[20:11:51] <R2E4> PCW around?
[20:11:59] <R2E4> Hi pfred
[20:12:20] <R2E4> mesa DIN rail clips...... what a wonderous idea, any available?
[20:58:23] <BeachBumPete> Man it is SO much nicer with the MPG wheel than the keyboard I use. MUCH faster setups. Now I just need to get the analog control to the spindle drive setup again so I can attempt to get the toolchanger working.
[21:14:37] <Loetmichel> on that account: is there a nice little howto on making a mpg for linuxCNC?
[21:38:57] <fritzgutten> Hey, I'm trying to implement a PID to do spindle feedback, what pin might i look at to tell if its working or not?
[21:56:51] <Jymmm> When you need to use a chainsaw for your lathe rough cut...
https://www.youtube.com/watch?v=N2ZBddYlilc
[22:01:06] <Loetmichel> Jymmm: yes, that guy is crazy
[22:01:16] <Jymmm> Loetmichel: =)
[22:03:08] <Loetmichel> i mean: thats not only a chainsaw pressed against a rotating piece of wood...
[22:03:39] <Loetmichel> thats how much? 200++ pounds of wood rotating on a lathe thats meant for a tenth of that.
[22:03:56] <Loetmichel> and WAY to fast for that unbalanced thing
[22:06:32] <pfred1> how many axis does LinuxCNC support?
[22:08:02] <BeachBumPete> I believe it is up to 9 axes simultaneously
[22:08:28] <pfred1> has anyone ever made a 9 axis machine?
[22:08:51] <pfred1> is there a video of it running?
[22:09:13] <BeachBumPete> I would think that a lot of the multi axis machines come in the form of production line type equipment really
[22:09:29] <BeachBumPete> or a multi spindle lathe perhaps like a swiss style machine?
[22:10:26] <pfred1> then there's C3PO
[22:10:47] <pfred1> who obvioisly runs LinuxCNC
[22:15:28] <fritzgutten> can anyone tel me why motion.spindle-speed-in is in rps and -out is in rpm?
[22:16:01] <pfred1> to be consisten with axis travel?
[22:16:06] <pfred1> consistent even
[22:16:48] <fritzgutten> for surface speeds?
[22:17:20] <fritzgutten> still dont get why one is in rpm and the other is in rps
[22:18:21] <pfred1> maybe for grainularity?
[22:19:44] <fritzgutten> ok
[22:29:33] <pfred1> does LinuxCNC autolevel?
[22:32:41] <pfred1> I can see probing being useful
[22:34:59] <pfred1> anyone know about this?
https://github.com/cnc-club/linuxcnc-features
[23:18:24] <Wolf_> lol, auto leveling cnc machine… I fucking wish
[23:20:07] <pfred1> Wolf_ what do you mean?
[23:20:18] <pfred1> auto leveling is a thing
[23:20:54] <Wolf_> how are you going to auto level a 2” or 4” fly cutter or face mill?
[23:21:15] <Wolf_> machine is build right or its fucked with milling
[23:21:29] <pfred1> people use it with smaller cutters
[23:21:30] <Wolf_> built*
[23:21:44] <pfred1> like for isolation routing PCBs
[23:22:13] <pfred1> those boards usually are not flat
[23:23:09] <pfred1> so you run a probe pass then software interpolates the probed positions with the G code file
[23:23:26] <Wolf_> idk, look in the code
[23:23:56] <pfred1> making a compensated g code file that you cut with
[23:24:16] <Wolf_> I know what auto leveling is from 3d printing ...
[23:25:49] <Wolf_> where the printer compensated for fucked up bed by printing unflat print
[23:26:38] <pfred1> CNC probing can go beyond that so you can engrave on a curved surface
[23:27:16] <roycroft> does my power supply for the motors need to be regulated, or do the drivers generally handle that?
[23:27:20] <MrCurious> … or printing a flat raft...
[23:27:21] <pfred1> or cut or whatever
[23:27:40] <pfred1> roycroft motor drives are current regulators
[23:27:43] <Wolf_> yeah, also for auto touch off of stock in machine
[23:28:06] <pfred1> you still can't over volt your drives though
[23:28:17] <pfred1> but yeah unregulated within limits is OK
[23:28:32] <roycroft> ok
[23:29:10] <pfred1> you still want adequate filtering
[23:29:26] <pfred1> which means some capacitors
[23:30:00] <pfred1> there's a way to calculate the size of the caps for the current draw
[23:30:24] <pfred1> but you can spitball that value
[23:30:47] <roycroft> the ps i'm looking at has some pretty beefy filter caps
[23:31:08] <pfred1> yeah other than inrush there isn't much downside to going too big on the filters
[23:32:01] <pfred1> well other than ecnomics
[23:32:08] <roycroft> it's essentially a big transformer, a rectifier, and two big caps
[23:32:17] <pfred1> yeah that and a fuse
[23:32:21] <roycroft> 10A for <$100, including shipping
[23:32:29] * roycroft will provided fuses
[23:32:32] <Wolf_> sounds like the one I’m looking at, except the price...
[23:32:32] <pfred1> pilot lamps are nie too
[23:32:39] <pfred1> nice even
[23:32:50] <pfred1> I hook an LED across the caps to bleed them
[23:32:51] <roycroft> i'm good at indicators
[23:33:23] <roycroft> this is a nos telecom power supply
[23:33:25] <pfred1> with the right dropping resistor of course
[23:33:43] <roycroft> i can get one for half that price
[23:33:50] <pfred1> one what?
[23:33:56] <roycroft> 10a power supply
[23:34:15] <Wolf_> can you find me a 1500W 160V psu…
[23:34:22] <pfred1> I'm using a crappy Chinese SMPS ATM
[23:34:42] <pfred1> but i used to have a homebrew transformer setup
[23:35:09] <enleth> OK, so I managed to take care of almost all of the Bridgeport's weirdness with ladder logic
[23:36:25] <enleth> It homes properly, jogs with the joysticks, controls the spindle from within linuxcnc and allows spindle control in handwheel mode without trying to stop it all the time
[23:36:43] <roycroft> http://www.ebay.com/itm/302166459281
[23:36:47] <roycroft> that's what i'm looking at
[23:37:58] <roycroft> i guess it's just over $1000 with shipping
[23:38:07] <roycroft> shipping is a lot, because transformers are heavy
[23:38:59] <pfred1> I've been to Kissimmee
[23:39:10] <roycroft> i've been near kissimmee
[23:39:13] <Wolf_> $1000?
[23:39:17] <roycroft> er
[23:39:18] <roycroft> $100
[23:39:19] <roycroft> sorry
[23:39:36] <Wolf_> lol
[23:39:42] <roycroft> my family went to disney world when it first opened
[23:39:49] <roycroft> before that epcot center stuff
[23:39:53] <pfred1> yeah I was there the year it opened too
[23:40:04] <pfred1> it was very clean then
[23:40:20] <pfred1> place is like a slum today
[23:41:36] <roycroft> ok i'm getting that power supply
[23:42:15] <pfred1> the castle in disneyworld is like the biggest disappointment on the planet
[23:42:30] <roycroft> i did not like disney world
[23:42:32] <roycroft> it was crowded
[23:42:34] <roycroft> it was hot
[23:42:35] <roycroft> it was humid
[23:42:41] <pfred1> you go inside it and it is a one room gift shop
[23:43:00] <pfred1> when you're a ittle kid you're like WTF this is a big castle
[23:43:33] <pfred1> florida can get pretty hot
[23:43:52] <roycroft> i did enjoy the kennedy space center
[23:44:10] <pfred1> I was working in a metal building in FL and I was splashing in a puddle of my own sweat on the concrete floor
[23:44:24] <roycroft> and the sweat was burning you, i'm sure
[23:44:36] <pfred1> yeah I got to ride on the test lunar rover at the cape once
[23:44:53] * pfred1 was a really cute kid
[23:45:26] <pfred1> after the parade the nice air force man let em sit on the bak and he took me for a spin
[23:45:42] <Wolf_> I guess that price isn’t bad
http://www.antekinc.com/ps-5n48-500w-48v-power-supply/
[23:47:52] <pfred1> thry never let you look at the xformer in the metal box though
[23:48:04] <pfred1> it is probably an IE plate job
[23:48:58] <pfred1> I used a xformer out of a PDP 11/34
[23:49:10] <pfred1> huge block
[23:49:50] <pfred1> I serised the two 13.5VAC windings together
[23:52:57] <pfred1> the coolest thing I ever saw at the Cape was this waldo they had setup in the VAB during the Viking mission in the corner and it was mimicing what the rover was doing on Mars
[23:53:17] <pfred1> that fascinated me
[23:53:36] <roycroft> that would be cool
[23:53:41] <pfred1> to think another gadget like it was doign the same thing on anothr planet
[23:53:51] <pfred1> yeah it was mind blowing
[23:54:38] <pfred1> that must have been in 1975? maybe 76?
[23:55:08] <pfred1> lots of the Cape is downright depressing though
[23:55:10] <roycroft> i was there in '73, i think
[23:55:13] <roycroft> maybe'72
[23:55:17] <roycroft> i don't remember that though
[23:55:28] <pfred1> you go on the tour and you see the launch pads just rutting away
[23:55:32] <roycroft> we did not spend a lot of time there though
[23:55:38] <roycroft> the rest of my family were all about disney
[23:55:42] <roycroft> and i was about space stuff
[23:55:53] <pfred1> they never built anything there to last
[23:56:20] <pfred1> when they're done with it that's it too they don't even weed wack around the ruins nothing
[23:57:12] <pfred1> almost nothing of the early space program remains today other than broken oncrete pads
[23:57:27] <roycroft> that's too bad
[23:57:40] <pfred1> it's not in the budget to maintain any of it
[23:57:51] <pfred1> like all the buildings are shot now
[23:58:57] <pfred1> it's a weird thing
[23:59:41] <pfred1> I live by Wallops Island now and they launch stuff from there sometimes
