#linuxcnc | Logs for 2013-11-09

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[00:20:53] <sirdancealot3> is there something smarter than https://github.com/mattvenn/cad/blob/master/tools/etchZAdjust/Etch_Z_adjust.2.2.py ? something with two steps, first probing and saving the values, second loading them and milling?
[00:23:26] <MacGalempsy_> i guess it depends on what you are tapping?:
[00:24:05] <MacGalempsy_> go a set of the irwin/mason and never had any issues
[00:43:05] <sirdancealot3> or just add some debugging..
[01:55:24] <_DJ_> moin
[02:49:31] <archivist> jesseg, Dormer is a good make of tap
[03:51:48] <MacGalempsy_> morning
[03:51:59] <_DJ_> morning MacGalempsy
[04:07:11] <MacGalempsy_> whats going on dj?
[05:25:48] <MacGalempsy_> << banging head against the wall. trying to understand programming is driving me up the wall
[05:51:32] * _DJ_ puts a soft pillow between the wall and MacGalempsy's head
[05:55:19] <jthornton> it's like the pygmy that ate the elephant... one bite at a time
[06:53:26] <MacGalempsy_> heh.
[06:53:45] <MacGalempsy_> what would be ideal woudl be to pay someone to set it up!
[06:56:01] <jthornton> then you don't know what you have and can't fix it
[06:56:31] <MacGalempsy_> true, but most likely it would be more like a paid tutor
[06:57:49] <jthornton> are you stuck somewhere or just lost?
[06:58:54] <MacGalempsy_> well, I have got the pins list. and went through the basic pnc config. now have a HAL and INI file,
[06:59:17] <MacGalempsy_> going through your example, but there is just a lot to swallow
[06:59:39] <MacGalempsy_> I guess its time to go through the integrators manual more
[07:00:31] <jthornton> I find the pncconf configuration to be a bit confusing due to things put in the INI file that do nothing
[07:01:11] <jthornton> if you use that be aware of that
[07:02:05] <jthornton> this is the chapter you want to read a few times http://linuxcnc.org/docs/html/hal/basic_hal.html
[07:02:11] <jthornton> it's short and to the point I hope
[07:02:45] <MacGalempsy_> I will go through that again
[07:02:48] <jthornton> and this section http://linuxcnc.org/docs/html/config/ini_config.html#_custom_sections_and_variables_a_id_sub_custom_variables_a
[07:03:13] <MacGalempsy_> one thing, why is DIR out and the pin named in?
[07:03:28] <jthornton> read the above a few times
[07:03:58] <MacGalempsy_> ok. will do
[07:04:27] <jthornton> take a look at the figure in this section http://linuxcnc.org/docs/html/hal/basic_hal.html#_net_a_id_sub_net_a
[07:05:43] <jthornton> which pin are you looking at?
[07:06:50] <MacGalempsy_> can I net all the connections before calling the functions?>
[07:07:52] <jthornton> If I understand your question you have to load a component first then usually you add the function to a thread then create the nets
[07:08:07] <MacGalempsy_> ah, ok top down
[07:08:22] <jthornton> but I'm not sure exactly what you mean by calling the functions
[07:08:33] <MacGalempsy_> i guess one thing is I am scared that misprogramming will screw something up
[07:09:13] <jthornton> yes, I can understand that. My approach is to do one thing at a time and test
[07:09:54] <jthornton> first you need a configuration that runs, then you can add and test each axis then the I/O etc
[07:10:09] <MacGalempsy_> I want to start with the servo motors, but need some custom variables for all the pins coming from the amplifier
[07:11:02] <MacGalempsy_> so maybe I should start with the on/off and estop
[07:11:04] <jthornton> can you describe what you mean by custom variables
[07:11:12] <MacGalempsy_> heh. that way I can stop it if things get screwed up
[07:11:17] <jthornton> estop is a good starting point
[07:11:28] <jthornton> do you have a physical estop?
[07:11:31] <MacGalempsy_> like amplifier reset, enable, fault
[07:11:37] <MacGalempsy_> yes there is one on the front panel
[07:11:52] <jthornton> ok those are just I/O
[07:12:37] <MacGalempsy_> I am pretty sure everything I have connected is done right. the only issues I had wiring was the magnetic door lock and the coolant pump
[07:13:09] <MacGalempsy_> if the encoder is 2500 count, is that everything, or each channel?
[07:13:24] <jthornton> If you start with the sample configuration and add one thing at a time it might be better than using the wizard in the long run
[07:14:01] <jthornton> for example here is the external estop http://linuxcnc.org/index.php/english/forum/47-hal-examples/25861-external-e-stop
[07:14:37] <jthornton> usually the count is x 4 for how many pulses you get per rev
[07:15:02] <jthornton> so a 2500 count encoder is 10,000 pulses per rev
[07:15:08] <MacGalempsy_> ok
[07:35:14] <PetefromTn> ////////////////////////////////////////////////////////
[07:35:38] <jthornton> PetefromTn, is asleep at the wheel I think
[07:36:39] <PetefromTn> LOL actually my wireless keyboard battery was dying .
[07:37:26] <PetefromTn> just had to put a new battery in it now we are working LOL.... It actually just stuck on the last thing I typed LOL.
[07:37:54] <PetefromTn> I LOVE my wireless keyboard tho and the batteries last a couple months so far.
[07:38:03] <PetefromTn> jthornton: How are you this morning?
[07:39:10] <jthornton> good, just fixing to head for breakfast
[07:39:42] <PetefromTn> head to the kitchen or head to a restaurant?
[07:41:34] <jthornton> to a nice little restaurant that used to be a purple cow lol
[07:45:04] <PetefromTn> enjoy man.... here's my latest attempt at 3d cad... http://imagebin.org/276317
[07:49:32] <jthornton> nice what did you draw that in?
[07:52:56] <PetefromTn> freecad
[07:53:27] <PetefromTn> managed to get it to NOT crash for awhile LOL
[07:54:42] <PetefromTn> Trying to figure out how to put some scalloped cuts around the top edge of the part equidistant spaced .
[08:03:46] <Tom_itx> learn to estop before you can crawl, walk , run , dance, jump for joy!
[08:04:38] <PetefromTn> yup definitely gotta have estop first...been there done that. Broke stuff..etc. etc.
[08:05:47] <Tom_itx> i just like jthornton's approach
[08:06:12] <PetefromTn> and what is that precisely?
[08:06:24] <Tom_itx> read the log
[08:06:26] <Tom_itx> it's all there
[08:08:19] <Tom_itx> PetefromTn, what's it for? looks like an over fancy pulley
[08:08:42] <PetefromTn> Its for my target scope... its an adjustment wheel.
[08:08:53] <Tom_itx> with a weak spot in the horizontal to vertical plane
[08:09:14] <PetefromTn> Ive made quite a few manually but this will be the first made in the VMC hopefully.
[08:09:30] <PetefromTn> huh?
[08:09:44] <Tom_itx> maybe not but it looks a bit thin there
[08:10:00] <Jymmm> PetefromTn: Did you ever sell that pea shooter you had?
[08:10:19] <PetefromTn> Which one?
[08:10:29] <Jymmm> the $6000 one?
[08:10:44] <PetefromTn> I guess so because the only one I have left is the home built pistol I made.
[08:10:44] <Tom_itx> and i'd personally radius the transition
[08:11:00] <Tom_itx> top and bottom
[08:11:16] <Jymmm> it was blue and your friend banged it into a wall
[08:11:20] <PetefromTn> Oh that one no that was not mine, that was just to show the wheel I machined that I sold to a friend. It was his rifle that was for sale.
[08:11:46] <Jymmm> did he sell it?
[08:11:47] <PetefromTn> I WISH it was mine it would not be for sale LOL.
[08:11:47] * Tom_itx gives Jymmm one of jt's cannons with a pea in it
[08:11:58] <PetefromTn> Dunno why are ya interested?
[08:12:34] <Jymmm> I'm interested in knowing if someone paid $6000 for a pellet rifle =)
[08:12:42] <Jymmm> used
[08:12:43] <Tom_itx> heh
[08:12:50] <Jymmm> and all banged up
[08:12:51] <PetefromTn> Oh there's LOTSa folks who would...
[08:13:06] <Jymmm> But DID they is the question =)
[08:14:56] <PetefromTn> I think it was like $3.5k for the whole package and I think he sold the scope for like $1k seperately with the wheel on it. Last I checked the rifle was still for sale for $2k or so.
[08:15:01] <Tom_itx> PetefromTn, what's your approach to milling that to minimize chatter?
[08:15:14] <PetefromTn> Honestly dunno LOL
[08:15:32] <Jymmm> A REAL estop contains one or more safety relays, not some lines of code... http://linuxcnc.org/index.php/english/forum/47-hal-examples/25861-external-e-stop
[08:15:54] <Tom_itx> Jymmm, estop is the plug in the wall
[08:16:08] <Jymmm> Tom_itx: Not necessarily
[08:16:14] <PetefromTn> When I made them manually I typically milled and drilled the hole pattern and then contoured it in the lath..
[08:16:17] <Jymmm> Tom_itx: some needs brakes
[08:16:22] <archivist> Tom_itx, chatter can be a machine problem
[08:16:28] <PetefromTn> lathe
[08:16:33] <Tom_itx> archivist yes to a point
[08:16:53] <PetefromTn> hes right tho even in the lathe this thing will ring like a tuning fork...LOL
[08:17:17] <PetefromTn> Gotta go real gentle like with light cuts and it still rings.
[08:17:27] <Tom_itx> if you're gonna lathe it, i'd probably do that first
[08:17:29] <archivist> listenf to the frequency, feel around for what is vibrating
[08:17:35] <Tom_itx> then mount it in a fixture
[08:17:47] <Jymmm> fixture is a good idea
[08:17:49] <PetefromTn> nope cant do that first drills wander bad then
[08:17:51] <Tom_itx> just don't feel the tools
[08:18:03] <Tom_itx> spot drill them
[08:18:28] <Tom_itx> or drill the perimeter holes first
[08:18:37] <PetefromTn> Oh it will get a fixture but for the CNC work flow I am gonna mill the holes and drill the smaller holes and then machine MOST of the contours in it followed by insert in the lathe to clean up..
[08:20:10] <Jymmm> Anyoen know where I coulld find thrust bearings apx 3" OD x 2.75" ID ?
[08:20:18] <Tom_itx> roller?
[08:20:23] <Tom_itx> still looking ehh?
[08:20:24] <Jymmm> sure
[08:20:27] <Jymmm> yeah
[08:20:36] <Tom_itx> i used to have a catalog....
[08:20:42] <PetefromTn> I plan to just pop the chunk of aluminum up on sacrificial jaws with a step for the first cuts and perimeter leaving some material to hold onto then flip it to cut away into the rest in a pair of machined jaws...
[08:20:43] <Tom_itx> probably tossed it by now
[08:20:47] <Jymmm> 3" OD is easy, but the ID being the issue
[08:20:54] <Tom_itx> small rollers
[08:21:09] <Jymmm> yeah
[08:21:09] <Tom_itx> high speed applications
[08:21:16] <Jymmm> no
[08:21:21] <Jymmm> just need smooth
[08:21:23] <archivist> http://www.arceurotrade.co.uk/Catalogue/Bearings
[08:21:29] <Tom_itx> for the mouse?
[08:21:40] <Jymmm> trackball, yeah
[08:21:47] <Tom_itx> i got some nice bearings from barden long time back
[08:21:58] <Tom_itx> see what they have
[08:23:08] <Tom_itx> yep, i tossed all my bearing catalogs, they were getting pretty dated
[08:24:22] <archivist> I never toss bearing catalogues
[08:24:38] <Tom_itx> i bet you never toss anything... you're the archivist!
[08:24:51] <archivist> most types are current for eons
[08:25:15] <Tom_itx> limited space, something must go
[08:28:35] <Jymmm> http://www.skf.com/binary/12-34147/06003_1_EN_Needle-roller-bearings.pdf
[08:29:58] <Jymmm> Nice reference material in there too
[08:39:41] <PetefromTn> I got a question for you seasoned machininsts out there....
[08:40:09] <PetefromTn> When I machine this top side of that part and leave the flashing on the bottom to hold onto and then go to flip it over..
[08:40:45] <PetefromTn> I am gonna machine some female sacrificial jaws using the same drawing and just changing the offset of the cut from an outside to an inside.
[08:41:26] <Jymmm> Why not just mount it to it's hub?
[08:41:46] <PetefromTn> Do you typically just use the same tool settings or do you add in some extra width for the mating of the parts into the jaws ?
[08:42:30] <PetefromTn> I am gonna machine its hub second and besides I doubt it will be strong enough to offset the cut forces in those delicate areas. Gotta hold onto the perimeterI think.
[08:42:36] <archivist> each part has its own problems...depends
[08:44:08] <PetefromTn> yeah I know but I am asking TYPICALLY when you make a female sacrificial jaw using the same drawing as a Cam guide and change the cutter offset from inside to outside do you just leave it as it is or add in some cutter compensation to give it a little extra room?
[08:44:42] <PetefromTn> or rather outside to inside..
[08:45:18] <archivist> I dont have a typical nor have I done that
[08:51:13] <Jymmm> Bearing Apps https://play.google.com/store/apps/developer?id=SKF
[09:02:26] <Jymmm> Is there anything automotive that uses thrust bearings?
[09:02:46] <PetefromTn> I am surprised to hear you have not done that. Flipping parts into sacrificial jaws is a very common machining method apparently. I have done it a bunch but I have not done a wheel like this before. I am just wondering if I should use No comp or no additional offset to machine the female pocket into the jaws. Probably nothing but I was wondering what you guys do>
[09:04:14] <archivist> most of my work has been round and on a lathe, used soft jaws often, no cam involved though
[09:05:30] <archivist> even to the extent of wooden press fit chucks so machined shiny parts done get marked
[09:05:32] <PetefromTn> Okay thanks, was hoping for information from the milling and VMC guys here LOL.
[09:06:14] <PetefromTn> yeah I use leather often to hold shiny bits LOL..
[09:07:47] <archivist> I have an jig here which was machined up on the 4 axis at the time so I could machine a batch of gears on the rotary
[09:24:39] <PetefromTn> It seems to me that if you are machining a round piece and you make a pocket to hold it one side of which has a fixed jaw and the other a moving jaw then if you add or subtract anything from the pocket over the size of the part your center will be off half that diameter. At least I think that is correct.
[09:25:56] <archivist> my pockets are sized or they include a spigot in the middle
[09:26:28] <archivist> this was a sized with top clamp http://www.collection.archivist.info/archive/DJCPD/PD/2008/2008_10_07_cnc_Racing_gears/p1010069.jpg
[09:38:12] <PetefromTn> What is that thing?
[09:59:42] <archivist> holds these gears during machining http://www.collection.archivist.info/archive/DJCPD/PD/2008/2008_10_07_cnc_Racing_gears/p1010080.jpg
[10:04:20] <PetefromTn> OOh those are pretty!! RC stuff?
[10:05:06] <archivist> they were/are using the RC servos for a racing motorbike throttle
[10:05:43] <archivist> they were breaking the spastic gear so we made brass ones
[10:06:03] <PetefromTn> Anyone else have a problem wtih windows media player where when you open it you have two of every song loaded in there? I found a way to remove them online in a discussion about it on some tech help site but even tho it removed them every time I power down the computer and restart it they are there again>
[10:06:39] <archivist> format and insert linux
[10:06:39] <PetefromTn> They appear aluminum in that photo.
[10:06:56] <PetefromTn> thats coming actually LOL I want to do a dual boot.
[10:07:08] <archivist> you seem colour deficient then
[10:07:42] <PetefromTn> maybe it is the blue background but I have perfect color vision LOL
[10:07:52] <PetefromTn> Or perhaps it is my monitor settings.
[10:08:28] <archivist> note the brass is freshly machined too, yes it looks a bit pale here too
[10:08:42] <PetefromTn> It has something to do with the WMP network service from what I can tell.
[10:09:10] <PetefromTn> Nice work man..they look great.
[10:11:06] <archivist> there were for the new Norton circa 2008 http://en.wikipedia.org/wiki/Norton_Motorcycle_Company
[10:13:20] <archivist> I think boss at the time charged a bit much, there was never any follow up work
[10:16:51] <PetefromTn> Oh they are for a Norton Motorcycle? I thought you meant an RC bike or something...
[10:20:36] <archivist> yes the throttle on the racer
[10:20:53] <ChuangTzu> Jymmm: clutches
[10:22:05] <PetefromTn> sounds like fun.
[10:22:56] <archivist> trouble being just a subcontract bit player one never knows how well it worked or not
[11:42:42] <plasma_ger> hi folks
[11:43:07] <plasma_ger> its ichgucklive on the plasma setup at 5i25-7i76
[11:44:58] <plasma_ger> pcw_home: ?
[11:45:46] <plasma_ger> PetefromTn: are you one
[11:46:08] <PetefromTn> am I one what?
[11:46:44] <plasma_ger> hi you got a 7i77 do i need to powerup Vfield to config wit ptepconf
[11:46:58] <plasma_ger> pncconf
[11:49:34] <pcw_home> probably (though I'm not an expert with pncconf)
[11:50:34] <Tom_itx> PetefromTn if you machine softjaws clamp something between them when you mill them just enough so that when they're clamped it fits the part and is tight
[11:51:02] <plasma_ger> pcw_home: the "broken" 7i76 and 5i25 have finalky arrived here im now getting the system reinstalled and we will see
[11:51:17] <pcw_home> No I/O (other than stepgens and the spindle encoder) will be available as HAL pins
[11:51:18] <Tom_itx> i would probably hold that part on a flat sacrificial plate and use clamps personally
[11:51:33] <pcw_home> without field power
[11:51:35] <plasma_ger> pcw_home: the 5i25 led flashed for 5ms i guess its all alright
[11:52:11] <plasma_ger> ok
[11:52:19] <PetefromTn> Tom_itx: I plan to machine the top face down to around .5" on the OD and then machine a pocket into sacrificial jaws to accept the machined face. Then I will machine the other side. Finally insert it into the lathe for cleanup.
[11:52:49] <PetefromTn> plasma_ger: not sure what you are asking here man.
[11:53:22] <plasma_ger> ok
[11:54:04] <plasma_ger> someone knowes what the force axis to maximize option is in pncconf gui axis config window
[11:54:12] <Tom_itx> for example, i cut that pattern in the softjaws but held them open slightly: http://tom-itx.dyndns.org:81/~webpage/cnc/P2.jpg
[11:55:09] <Tom_itx> http://tom-itx.dyndns.org:81/~webpage/cnc/jaws.jpg
[11:55:15] <Tom_itx> that shows both P2 and P3
[11:55:25] <Tom_itx> in the jaws
[11:57:33] <PetefromTn> Okay you are suggesting using a three jaw mounted in the mill to accomplish the same thing then?
[11:57:46] <Tom_itx> not 3 jaws
[11:58:02] <Tom_itx> if i were gonna do the whole job in a mill i'd bolt it to a flat plate
[11:58:09] <PetefromTn> My stock is square profile tho so I need to machine the first op in the vise to get the round OD as well as remove the features.
[11:58:10] <Tom_itx> and move clamps with op stops etc
[11:58:25] <Tom_itx> or start with round stock
[11:58:36] <Tom_itx> you don't have to
[11:58:51] <Tom_itx> you can profile it while bolting in one of the inner holes
[11:59:24] <Tom_itx> there are lots of ways to approach it
[11:59:36] <PetefromTn> I don't want to be bolting and unbolting here which is why I chose to use the sacrificial jaws in the vise but your idea has merit. I MAY actually bolt my three jaw down there and set a fixture offset to do the second op in the chuck in the mil.
[11:59:38] <Tom_itx> whatever works best for your given tooling
[12:00:58] <PetefromTn> I don't have two vises in the machine yet or I would just use both in two ops. Ideallly I would have the part machined after the second op with only finish work and polishing in the lathe. followed by deburring of the holes. That would get me where I need to be I think.
[12:01:02] <PetefromTn> Thanks for the suggestions man.
[12:01:48] <Tom_itx> if you have alot to run, prove the part with one then run all one op at once before going to P2 P3 etc
[12:06:21] <PetefromTn> yeah I know not got a lot maybe three but there MIGHT be more after I get these done and folks see how pretty it is LOL
[12:14:37] <Jymmm> ChuangTzu: thanks
[12:20:10] <plasma_ger> pcw_home: i think the stepgen2 is broken can i messure it with a scope if it triggers
[12:21:35] <pcw_home> you can just set it to GPIO and see if you can change the output state with setp
[12:22:40] <pcw_home> num_stepgens=0 in the config line
[12:24:16] <plasma_ger> X and Y are running so 0-1 is ok
[12:25:09] <plasma_ger> num_stepgens=5
[12:29:50] <pcw_home> if you set num_stepgens=0 (or 2) you can
[12:29:50] <pcw_home> setp hm2_5i25.0.gpio.004.is_output true
[12:29:52] <pcw_home> setp hm2_5i25.0.gpio.005.is_output true
[12:29:54] <pcw_home> and the manually set or clear the I/O pins for stepgen 2:
[12:29:55] <pcw_home> setp hm2_5i25.0.gpio.004.out true
[12:29:56] <pcw_home> setp hm2_5i25.0.gpio.004.out false
[12:29:58] <pcw_home> setp hm2_5i25.0.gpio.005.out true
[12:29:59] <pcw_home> setp hm2_5i25.0.gpio.005.out false
[12:31:09] <pcw_home> This will test the 7I76/5I25 step and dir output path for stepgen 2 (GPIO4 is dir2 GPIO5 is step2)
[12:31:33] <plasma_ger> ok
[12:31:42] <plasma_ger> scope says there are ticks
[12:31:55] <plasma_ger> not rectencular but its ticking
[12:34:19] <pcw_home> should be 5V
[12:34:54] <pcw_home> and + and - pins should be inverted copies of same signal
[12:36:50] <plasma_ger> i see signals so i think its ok let me check the X
[12:39:37] <plasma_ger> pcw_home: scope is clear on alll signals so i gess its the driver
[12:40:50] <pcw_home> driver?
[12:43:02] <pcw_home> are you looking at 5i25 pins or 7I76 pins?
[12:43:22] <plasma_ger> the Leadshine let me check this
[12:44:20] <plasma_ger> its the leadshine
[12:45:51] <pcw_home> step timing OK? (enough margin)
[12:47:34] <plasma_ger> yes
[12:48:06] <andypugh> I don't think this is what he thinks it is: http://www.ebay.co.uk/itm/Silver-Tone-Black-12-x-12mm-Inner-Hole-Collect-Chuck-CNC-Milling-Lathe-Tool-/121205646148
[12:49:22] <pcw_home> I've seen some people set step times to drive minimums, dont do that :-)
[12:51:10] <pcw_home> looks like a chuck drive pinion (it thats the correct term)
[12:51:28] <andypugh> Yes, I am almost certain that is what it is.
[12:51:48] <andypugh> (From a 3-jaw lathe chuck)
[12:52:07] <plasma_ger> pcw_home: its not on your stuff
[12:52:23] <plasma_ger> if i change X to the Z(stepgen2) it moves
[12:52:37] <plasma_ger> so its the M542
[12:52:45] <plasma_ger> the M880 i got works
[12:53:34] <plasma_ger> ok by thanks for the help
[12:53:51] <pcw_home> Try a longer step time...
[12:54:07] <plasma_ger> bye i will try to open the m542 and see what is broken
[12:54:20] <plasma_ger> its the same steppers
[12:54:32] <plasma_ger> so the same timing shout work also
[12:54:47] <plasma_ger> the driver enables
[12:54:57] <plasma_ger> but the signals not getting thru
[12:55:08] <pcw_home> if its on the edge, maybe, maybe not
[12:55:19] <plasma_ger> stepper got force so the driving stage may work
[12:55:41] <plasma_ger> it is 2500 at 15oo in the datasheet
[12:56:46] <pcw_home> step time is 2500?
[12:58:08] <pcw_home> you should never set the step time to the drives minimum (this is just on the edge of not working)
[12:58:58] <plasma_ger> i know its 1000mor
[13:03:27] <plasma_ger> D
[13:03:29] <plasma_ger> e
[13:03:31] <plasma_ger> f
[13:03:32] <plasma_ger> a
[13:03:34] <plasma_ger> u
[13:03:35] <plasma_ger> lt
[13:03:37] <plasma_ger> se
[13:03:38] <plasma_ger> tti
[13:03:40] <plasma_ger> n
[13:03:41] <plasma_ger> g
[13:03:43] <plasma_ger> i
[13:03:44] <plasma_ger> s
[13:03:46] <plasma_ger> P
[13:03:48] <plasma_ger> U
[13:03:50] <plasma_ger> L
[13:03:52] <plasma_ger> /DIR
[13:03:53] <plasma_ger> m
[13:03:55] <plasma_ger> od
[13:03:56] <plasma_ger> e
[13:03:58] <plasma_ger> a
[13:03:59] <plasma_ger> nd
[13:04:01] <plasma_ger> up
[13:04:02] <plasma_ger> w
[13:04:04] <plasma_ger> a
[13:04:05] <plasma_ger> r
[13:04:07] <plasma_ger> d
[13:04:09] <plasma_ger> -ri
[13:04:10] <plasma_ger> s
[13:04:11] <plasma_ger> i
[13:04:13] <plasma_ger> n
[13:04:14] <plasma_ger> g
[13:04:16] <plasma_ger> e
[13:04:17] <plasma_ger> d
[13:04:19] <plasma_ger> g
[13:04:20] <plasma_ger> e
[13:04:22] <plasma_ger> ac
[13:04:23] <plasma_ger> ti
[13:04:25] <plasma_ger> v
[13:04:27] <plasma_ger> e
[13:04:29] <plasma_ger> SORRY
[13:04:30] <plasma_ger> pcw_home: defalt is apward risiong edge
[13:09:53] <pcw_home> wow! how did you do that?
[13:13:55] <plasma_ger> ok last check has been stepper OK confirmed
[13:16:03] <plasma_ger> Bye
[13:17:17] <ReadError> wow
[13:55:06] <pingufan> Hello, I want to connect a PIC to my cnc mill. The controller will monitor the mill and shall immediately pause the execution of the milling job when the spindle rpm go below a specific value.
[13:56:25] <pingufan> What is better? Simulating a USB keyboard, or simulating a serial port and let linuxCNC talk to it through this serial port? Can LinuxCNC communicate with a serial device?
[13:56:53] <pingufan> For me it is easier to communicate serially.
[13:57:43] <pingufan> This would also cause no interference between normal keyboard input and the microcontroller.
[13:58:14] <Jymmm> Whats the purpose of the PIC ?
[13:59:50] <Jymmm> And why would the spindle drop below a certain RPM; that sounds like cutting too deep/too quickly.
[14:00:43] <Jymmm> you would "normally" adjust your speeds/feeds accordingly in advance to prevent that.
[14:00:48] <pingufan> My mill has a belt drive and a very weak 120 Watts motor. When milling ALU, it happens from time to time that I get a "very special" material. This causes that the spindle stops and the tool breaks (this are 1-2 mm tools only)
[14:01:36] <Jymmm> "very special" ???
[14:02:26] <pingufan> Extremely taughen
[14:02:41] <Jymmm> That sounds like you are using a yugo to move a 20,000lb tractor trailer.
[14:03:48] <Jymmm> You could just put an encoder on your spindle and let linuxcnc read it directly, no uC/PIC needed.
[14:04:50] <pingufan> Anyway, I have my reasons. Can I connect a device serially, watch what it sends, and do things depending on its output?
[14:06:44] <pingufan> I would also like to send a code to the PIC when I switch the spindle on, and another on ewhen I turn the spindle off. To notify the PIC that the spindle-stop is wanted.
[14:12:29] <pingufan> archivist: are you here?
[14:13:41] <skunkworks> pingufan: this can all be done without a pic using a spindle index/encoder and linuxcnc spindle_at_speed pin.. (and a few various hal componants)
[14:14:26] <pingufan> What does this encoder cost?
[14:15:12] <skunkworks> you could use just an single sensor also - (1 pulse per rev)
[14:15:30] <skunkworks> how where you going to sense spindle rpm with the pic?
[14:15:33] <pingufan> We are talking of 10000-18000 rpm!
[14:16:13] <pingufan> A reflective light barrier and a mark on the spindle
[14:17:47] <pingufan> This is ~250 pulses per second.
[14:18:25] <pingufan> Are the inputs of a parallel port fast enough for that?
[14:28:20] <skunkworks> depending on the computer you should be able to count 20-40khz
[14:29:03] <pingufan> So a simple reflective sensor could be enough?
[15:59:28] <MacGalempsy_> afternoon all
[16:06:04] <PetefromTn> Afternoon Mac.
[16:07:28] <MacGalempsy_> anything exciting going on today pete?
[16:09:45] <MacGalempsy_> well back to manual reading and conceptualizing. bbl
[16:19:40] <PetefromTn> just been trying to draw in 3d so I can start thinking and machining in 3d..
[16:19:53] <PetefromTn> How about you>?
[16:21:06] <Tom_itx> PetefromTn what did you model that round part in?
[16:21:15] <PetefromTn> freecad
[16:21:23] <Tom_itx> how long did it take?
[16:21:31] <PetefromTn> TOO DAMN LONG
[16:21:58] <Tom_itx> you don't like it?
[16:22:00] <PetefromTn> it crashes on me often unfortunately but that may be because I am doing things wrong I am new to the 3d thing
[16:22:29] <Tom_itx> doing something wrong in a cad program shouldn't crash it
[16:22:44] <PetefromTn> no actually it is amazing but I am having to learn not only how to draw but also how to keep from losing my info.
[16:22:46] <Tom_itx> it may not produce the desired result
[16:23:09] <PetefromTn> Agreed but it is still in beta so can't complain for the price LOL
[16:24:03] <PetefromTn> Honestly if it can draw that part and it is dimensionally correct when I machine it then it is all I will ever need honestly. SImple 2d stuff I draw and machine in sheetcam.
[17:09:10] <_DJ_> gn8
[17:21:35] <andypugh> Finished the toolpost. https://picasaweb.google.com/lh/photo/wINj61niBdZh52a-6ssCg9MTjNZETYmyPJy0liipFm0?feat=directlink
[17:24:45] <kwallace_shop> That looks pretty good.
[17:27:42] <andypugh> It's been an interesting excercise. If I was doing it again I would make a pattern and have a casting made.
[17:28:12] <andypugh> And I wouldn't want to be charging to make them.
[17:31:41] <kwallace_shop> You might be surprised at what some people would pay for a Rivett tool post.
[17:38:24] <kwallace_shop> Here is an example I happened on today of what some people can afford: http://www.sales.highendpalace.com/536000.jpg
[17:39:10] <PetefromTn> Nice work man...
[17:39:51] <kwallace_shop> http://www.sales.highendpalace.com/143700.jpg
[17:43:35] <kwallace_shop> andypugh: What's next?
[17:45:26] <andypugh> Ah yes, there is no limit to how much money you can spend on a gramaphone.
[17:47:46] <pcw_home> Well I hope the platter is sapphire and not mere plexiglass
[19:15:01] <RyanS> Those record players look kind of fugly tbh
[19:20:34] <RyanS> andypugh: did you design that tool post? I haven't seen anything similar
[19:33:45] <andypugh> It was the most common type on the Rivett.
[19:34:30] <andypugh> Plenty of them here: http://www.lathes.co.uk/rivett/page2.html
[19:36:34] <skunkworks> andypugh: very nice@
[19:36:37] <skunkworks> !
[19:39:00] <andypugh> I need to decide if I am going to put the degree markings around the base of the toolholder. They are entirley pointless :-)
[19:39:55] <andypugh> (Useful when the same casting is used to hold an indexer or milling cutter, as it was, but not in lathe tooholder mode)
[19:47:45] <RyanS> ah so holds 2 bits, one in each end
[19:48:25] <andypugh> I think normally you would switch the bit, round, but there is the option of rotating the toolholder.
[19:49:55] <andypugh> One nice thing about the lathe is that you don't need any tools. Everything (except the chuck key if you are not using collets) is on hand levers. Very carefully made ones, as it's not easy to engineer a toolpost lock that works with finger torque on a 1" lever.
[19:52:17] <andypugh> In this picture the two levers you can see are the toolpost swivel lock and the compound slide swivel lock:https://picasaweb.google.com/lh/photo/w8OLIxzsq3Y-PfouGeOwmNMTjNZETYmyPJy0liipFm0?feat=directlink
[19:53:07] <andypugh> Err: https://picasaweb.google.com/lh/photo/w8OLIxzsq3Y-PfouGeOwmNMTjNZETYmyPJy0liipFm0?feat=directlink
[19:53:55] <RyanS> Those bench lathes wih the belt drive going into the cabinet always remind me of old sewing machines
[19:54:12] <andypugh> There is a conical plate under both parts, the lock-lever pushes a matching tapered slide into the side of the conical plate, pulling everything down and locking the rotation. Really rather nice
[19:54:21] <RyanS> ah i see the old one looks pretty broken
[19:54:56] <andypugh> It's quite a good repair, but that chunk of iron ends up getting in the way. And looks ugly.
[19:56:15] <RyanS> you have the 608?
[20:05:21] <Tom_itx> looks good andypugh
[20:05:50] <andypugh> RyanS: Yes, i accidentally bought a 608 earlier this year.
[20:06:20] <andypugh> I don't know what I want it for :-)
[20:10:14] <RyanS> turning stuff :P
[20:13:25] <andypugh> Yeah, but I have the CNC lathe for that
[20:13:26] <RyanS> I'd be happy with a pedestal drill press at the moment.... Not much clearance with this bench one
[20:13:47] <RyanS> oh ok
[20:15:08] <andypugh> I spent a good part of this afternoon shortening the mounting arbor of my boring head so that bored-hole depth + boring bar + boring head was less than the machine travel.
[20:16:57] <RyanS> How long did it take to convert that milling machine to CNC? A big job it seems from your photos
[20:18:44] <andypugh> It's been about 3 years. But I deliberately made it a big project, and I have had several breaks way from it doing other things.
[20:19:23] <andypugh> I didn't have to make castings for the motor mounts, for example.
[20:20:20] <andypugh> And I spent a good 18 months on a side project.
[20:20:42] <RyanS> cool
[20:21:18] <andypugh> Having been told by the agent that nobody wants to use my idea commercially, I can admit now that the side project was a CNC conversion of the boring head. I had an idea for a way to power a rotating radial axis.
[20:32:07] <RyanS> I just keep my projects simple at the moment, I do the design work (I have a disability) & hire help to operate lathe etc. cnc mill would be good so as to actually 'drive' the mill myself.
[20:33:11] <RyanS> Got someone at the moment who can weld as well, which is handy
[20:33:32] <andypugh> My boring head was not simple. Step 1) Design and build a special brushless motor from scratch..
[20:35:19] <RyanS> jees
[20:52:18] <PetefromTn> How many lathes do you have anyway andy?
[20:55:27] <andypugh> Technically I have three.
[20:55:45] <PetefromTn> how many are CNC/
[20:56:12] <Tom_itx> andypugh, is that counting the horizontal mill?
[20:56:27] <andypugh> There is the CNC Chinese one, then a non-CNC 1930s Colchester Triumph in my dad's workshop, and the 608, also non-CNC
[20:57:02] <andypugh> I might CNC the 608. Just to cause outrage :-)
[20:57:16] <PetefromTn> cool.. I need to CNC my 12x36 lathe at some futurisic point LOL
[20:58:11] <andypugh> CNC converting the Z of any lathe is trivial (in fact there is a lot to be said for replacing the changewheels/gearbox by encoder and motor on _any_ lathe.
[20:58:22] <PetefromTn> just finished that drawing today and tried to import it into cambam to see about 3d milling it.
[20:58:30] <andypugh> But the X can often be tricky.
[20:58:59] <PetefromTn> Now that I can see it in the program I dunno how to differentiate the simple 2.5 d drill and mill from the 3d contouring.
[20:59:30] <andypugh> If I was doing the Chinese lathe again I would throw away the entire carriage and start from scratch. Of course the difference now is that I have the other tools to do that.
[20:59:34] <PetefromTn> the part seems to be one entity in Cambam without features clickable to machine individually.
[21:00:08] <PetefromTn> yeah I agree. Probably just remove the undercarriage of the lath carriage and built what is needed./
[21:00:35] <PetefromTn> Dunno what I am doing wrong with it so far but this is my first time 3d ing stuff.
[21:00:39] <andypugh> A CNC saddle is just a lump of metal with two grooves in it for the ways.
[21:01:08] <PetefromTn> agreed..
[21:01:34] <PetefromTn> andy where are you located in England?
[21:01:55] <andypugh> PetefromTn: I used MeshCAM recently, that seems to work really well. Except that for some reason the origin wasn't quite where I thought, and so that toolholder is a bit compressed in one axis.
[21:02:08] <andypugh> PetefromTn: Just to the east of London.
[21:02:25] <PetefromTn> I am sitting here with my oldest daughter who is 11 and she is interested in the fact that folks on here are all over the world LOL
[21:03:11] <PetefromTn> How amazing is it that we can chat across amazing distances right NOW!! hell it amazes me too.
[21:04:01] <PetefromTn> So you crunched that toolholder down some then huh..
[21:06:12] <andypugh> PetefromTn: You can zoom her out from here: http://goo.gl/maps/OSqaH
[21:06:54] <PetefromTn> Awesome man...which car is yours?
[21:07:07] <andypugh> I don't have a car :-)
[21:07:23] <PetefromTn> Okay is your house the brick one?
[21:07:39] <andypugh> I am the middle one of the three.
[21:08:04] <andypugh> The workshop is round the back.
[21:08:12] <PetefromTn> Okay the white one with red trim?
[21:09:14] <PetefromTn> Awesome man....she said can we come over for tea??!!
[21:09:44] <andypugh> Actually, I used to live in the white one, but the end all-brick set is actually three houses.
[21:09:45] <skunkworks> isn't it past her bed time?
[21:10:53] <andypugh> The white one is actually really small. The others are only fairly small.
[21:10:59] <PetefromTn> well its only ten and it is Saturday so SORTA..LOL We just finished eating some ice cream and I was showing here the Cad program and drawings I was working on today. She likes to draw in Blender all the time.
[21:11:10] <RyanS> Is buying an extra lathe like "umm honey, I need to get another lathe to erm turn more stuff"?
[21:11:27] <skunkworks> cool! Our daughter isn't that advanced yet. (14 months)
[21:11:48] <andypugh> RyanS: I answer only to myself.
[21:12:16] <PetefromTn> I want to try to teach her to draw in Cad in more of an engineering scheme than just drawing mine craft figures in Blender LOL
[21:12:44] <andypugh> It's a really different way of thinking.
[21:13:08] <RyanS> That's easy then
[21:13:16] <PetefromTn> agreed.. Things must be much more precise in cad generally speaking.
[21:13:22] <RyanS> blender is a horrible program
[21:13:54] <PetefromTn> Could not disagree more... I think it is an amazing program if you are into graphic design or video or gaming.
[21:14:05] <PetefromTn> especially since it is free.
[21:14:24] <PetefromTn> It is kinda like the Freecad of the video world..
[21:15:09] <PetefromTn> Is it COld as hell over there in England right now>
[21:15:25] <PetefromTn> how cold does it get where you are?
[21:15:40] <RyanS> The definition of free can be somewhat 'expanded' :P
[21:15:44] <andypugh> I first started 3D CAD with AutoCAD mechanical desktop. That would only extrude a sketch when it was fully constrained. And if you tried it would tell you how many constraints were missing. No further clues. Not which nodes or lines were inconstrained, no colour coding, nothing. It was like a logic puzzle. Entertaining in its way, but frustating when you just wanted to model stuff.
[21:16:19] <PetefromTn> I know it has come a long way hasn't it.
[21:16:55] <PetefromTn> do you use inventor or something?
[21:17:00] <RyanS> I've gotten pretty used to solidworks, I had ever actually used 2-D cad
[21:17:03] <andypugh> The UK doesn't do extreme weather. It's currenlty a bit rainy, and 5C (40F?)
[21:17:35] <RyanS> 5c is bloody freezing :)
[21:17:42] <PetefromTn> My brother went there with a family freind to visit and he said it was always raining and cold.. But we are colder than that here now..
[21:18:01] <RyanS> But I am from the antipodes
[21:18:20] <PetefromTn> I think we will hit the freezing mark tonight.
[21:18:30] <RyanS> or the dominions :p
[21:18:31] <andypugh> I use Inventor now. I rather like it. It works like I think. (But then I think like I think because I was a CAD-jockey with Inventor for a couple of years )
[21:19:18] <PetefromTn> RyanS: So you are from Down under then LOL
[21:19:46] <andypugh> I was told yesterday that I am going to Thomson in January. Apparently a town containing only miners and strippers.
[21:19:52] <PetefromTn> Did you get it thru work or something it is quite expensive...
[21:20:22] <RyanS> well Melbourne is considered reasonably average weather
[21:20:39] <PetefromTn> around here we call that BFE...
[21:20:50] <RyanS> Not as cold as Tasmania,
[21:21:07] <andypugh> Yes, I get a free Inventor license for home as a consequence of having a network license at work :-)
[21:21:17] <PetefromTn> the coldest I ever saw it here was 9 degrees F one night.
[21:21:36] <PetefromTn> Damn that is nice...
[21:21:41] <andypugh> I have worked in -40 in Finland.
[21:22:07] <PetefromTn> Jeez colder than a witches titty....
[21:22:19] <andypugh> it's not pleasant.
[21:22:25] <PetefromTn> Colder than a well diggers ass..
[21:22:33] <RyanS> I think that's why the English went to Tasmania first, so the administrators didn't get heatstroke
[21:23:24] <RyanS> Doesn't it get dark at 3 PM in the UK?
[21:23:30] <PetefromTn> I would love to visit newfoundland.
[21:24:34] <RyanS> I kind of consider 15c to be rather chilly
[21:24:42] <PetefromTn> So you draw in inventor and then cam in Meshcam then?
[21:26:19] <RyanS> Have you compared it to solidworks?
[21:26:46] <andypugh> I am trying out various CAM options. I would be happy with PyCAM if it wasn't so incredibly slow. It must be doing something really stupid and I have half a plan to see what and try to optimise it.
[21:27:39] <PetefromTn> I am TRYING to use sheetcam for the 2.5d stuff and then Cambam for the 3d stuff but so far not that simple.
[21:28:51] <andypugh> I haven't tried Solidworks. I have a paid-for license for Alibre, and that's not bad. I have played with Heeks (but the sketches are non-parametric) and FreeCAD (probably OK, but too different to bother with when I have Inventor for free)
[21:29:31] <PetefromTn> andypugh: My daugter wants to know if there are any dogs that came from England. We have a Siberian Husky named Nanuu....
[21:30:21] <andypugh> I don't actually do much 3d stuff. What I like doing is making things on my lathe, and then I just use my turning/boring/facing macros and no (visible) G-code
[21:30:51] <andypugh> I think about half the recognised breeds of dog are British.
[21:30:58] <PetefromTn> aah so like conversational then...
[21:31:58] <PetefromTn> I NEED to get this part prototyped here soon. The damn machine is sitting out there collecting dust and it needs to be making me some money LOL
[21:32:05] <andypugh> Yorkshire Terrier, Border Collie, King Charles Spaniel, English Mastiff, Spit Dog (extinct)
[21:32:31] <RyanS> Irish setter, welsh corgi English sheepdog , British shorthair (oops thats a cat)
[21:32:33] <andypugh> Greyhound, Whippet,
[21:33:01] <andypugh> Not sure about the Irish Setter, that might be Irish :-)
[21:33:26] <RyanS> release the hounds
[21:33:29] <andypugh> But is it quite possible that Ireland was part of the UK at the time.
[21:33:30] <PetefromTn> LOL that is awesome man. thanks...
[21:34:03] <PetefromTn> yeah no thanks to Wiliam Wallace....LOL
[21:34:09] <RyanS> I don't know if Irish people like to call themselves British, probably not
[21:34:34] <PetefromTn> You guys crack me up..
[21:34:53] <PetefromTn> RELEASE THE HOUNDS!!!!!!!!!
[21:35:27] <RyanS> I saw this, Stephen Fry show about language. And apparently, if you go to Leed for instance, they have a different accent for each suburb!
[21:35:59] <RyanS> Leeds*
[21:36:44] <andypugh> I used to live in Leeds.
[21:37:02] <RyanS> Surely with the advent of umm transport and communication technology, there would be not so much of a division with accents
[21:38:06] <PetefromTn> I watched a movie with Brad Pitt where he played a brittish guy and I could hardly understand anything they said thru the movie. It was funny tho LOL
[21:38:08] <andypugh> In the village where my parents live the pronunciation of the village name differs depending on which side of the valley you live on. ("Slawit" Or "Slath-wayte"). Of course the spelling is neither ("Slaitewaite")
[21:38:40] <PetefromTn> LOL interesting.
[21:39:09] <andypugh> (Sorry, I got the spelling wrong, It's Slaithwaite, but I have a map from 1620 where it is Clygwat.
[21:39:17] <PetefromTn> Of course there are people around here that are from the "HILLS" that I cannot understand a damn thing they say half the time and they are speaking english!!!
[21:39:21] <RyanS> He was supposed to be an Irish gypsy
[21:39:33] <PetefromTn> who?
[21:40:30] <RyanS> Were you talking about the movie Snatch?
[21:41:02] <PetefromTn> Yeah I think so could not recall the name. He was a fighter or something. Good movie.
[21:41:41] <PetefromTn> Oh thats right he was a gypsy.. they have a name for them I don;t remember.
[21:41:48] <PetefromTn> Oh yeah a PIKEY...
[21:42:05] <PetefromTn> or something like that.
[21:42:37] <PetefromTn> RyanS: What city do you live in?>
[21:42:58] <RyanS> why do British comedians always makes fun of Norwich, it seems to be coming up in every second show I've seen in the last month
[21:43:12] <RyanS> Melbourne
[21:43:42] <PetefromTn> Awesome...
[21:44:13] <RyanS> Maybe it's the Alan Partridge / Norwich thing
[21:45:35] <PetefromTn> Oh well thanks guys for chatting with us. We're gonna go to bed now. Say goodnight Gracie LOL
[21:46:39] <RyanS> gn
[21:51:06] <andypugh> Yikes! 0330 here. Time I was in bed too!
[21:51:14] <andypugh> Night all.