#linuxcnc | Logs for 2012-08-03

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[01:32:51] <AitalMAC> Anyone have experience with the new Atom intel CPUs?
[01:33:23] <AitalMAC> on the forum i find many suggest the 525MW but it's a 2008 motherboard hard to find today
[01:35:51] <AitalMAC> anyone knows if D2800 cpus have better latency than D2500
[02:05:56] <DJ9DJ> moin
[02:40:17] <Loetmichel> mornin'
[02:48:12] <Jymmm> hola Senior Loetmichel
[03:10:03] <Loetmichel> Jymmm: SO old i am not!
[03:10:13] <Loetmichel> [/yoda]
[03:10:15] <DJ9DJ> hrhr
[03:10:35] <Jymmm> Loetmichel: Bullshit Gramps!
[03:25:12] <Loetmichel> hrhr
[03:25:48] <Loetmichel> i would know if i had gradndkids, dont you think?
[03:25:51] <Jymmm> Loetmichel: Are you ok gramps? should I call 911?
[03:26:03] <Jymmm> sounded like a death cough there Loetmichel
[03:26:11] <DJ9DJ> lol
[03:26:21] <Loetmichel> or kids, for that matter
[03:26:32] <Jymmm> Loetmichel: And not necessarily on knowledge of the kids part.
[03:27:26] <Jymmm> Loetmichel: You could have knocked up the ugly chick when you were drunk at that party back in you Ark days
[03:27:35] <DJ9DJ> lol
[03:28:09] <Loetmichel> dont thinks so, i am perfectly able to keep track of every woman i hanged my willy in ;-)
[03:28:17] <Loetmichel> no pregnancys so far ;)
[03:28:24] <Jymmm> That you know of
[03:29:17] <Jymmm> Loetmichel: Wait, didn't they use sheep intestense as condoms back in your day?
[03:30:08] <Jymmm> Loetmichel: maybe when you were washing it out, you missed a spot
[03:30:59] <Loetmichel> hrhr... *cough* (should smoke less)
[03:31:54] * Jymmm says screw calling 911 for gramps and makes Loetmichel reservations instead.... did you want to be buried or cremated?
[03:32:44] <Loetmichel> i want to go in the eggtimer... so i work ONCE in my "lifetime"
[03:32:46] <Loetmichel> ;-)
[03:33:46] <Jymmm> I'm not exactly sure what you just said Loetmichel, but I'll chalk it up as alzhimers
[03:35:08] <Jymmm> FWIW 0.002: SS does not deform when exposed to 1200+F
[03:35:16] <Jymmm> FWIW 0.002" SS does not deform when exposed to 1200+F
[03:36:47] <Jymmm> But 0.010" aluminum sure in the hell does =)
[03:48:06] <Loetmichel> Jymmm: sandclock
[03:48:21] <Jymmm> =)
[06:06:12] * r00t4rd3d farts
[06:06:13] <r00t4rd3d> o_-
[06:07:07] <r00t4rd3d> http://www.kickstarter.com/projects/1523379957/oculus-rift-step-into-the-game
[06:07:21] <r00t4rd3d> holy shit they reached a million bucks in 3 days
[06:08:30] <r00t4rd3d> i need to make a virtual whore house asap
[06:11:41] <r00t4rd3d> would i still get street cred for being a virtual pimp?
[06:11:41] <r00t4rd3d> I need a hat.
[07:07:27] <r00t4rd3d> http://s14.postimage.org/s1aewffcx/DSC02496.jpg
[07:07:38] <r00t4rd3d> anothe job down
[07:08:16] <Tom_itx> do your steppers run hot?
[07:08:31] <r00t4rd3d> sure but its 90 outside
[07:08:41] <archivist> hot steppers are happy
[07:11:16] <Tom_itx> now you need to get some multi layer multi color laminate and make landscapes with it using the different colored layers
[07:12:51] <Tom_itx> Thomas Kincaid in cnc
[07:43:09] <jdh> did you fill in the cuts or is that just burning?
[08:22:24] <archivist> may be a useful toy http://www.sharecad.org/Default.aspx
[08:25:47] <micges_> neat
[08:26:06] <jdh> Soft Gold Ltd may retain User.s data in its archives after deletion and will not be liable to User in any way for such retained data.
[08:28:19] <micges> heh
[08:28:39] <micges> tiny detail ;)
[08:31:06] <cpresser> same policy as facebook :/
[08:36:05] <archivist> people post urls to drawings in here they can then get archived by whoever, no difference really
[08:37:21] <jdh> I uploaded a dwg, it displayed ok.
[08:38:34] <jdh> there is an autocad android app to display dwgs. It sends them to their site for display. They have a similar data policy.
[09:29:09] <taiden> overnight stress test on my new junk computer
[09:29:13] <taiden> 12.3k / 12.5k
[09:29:34] <taiden> saying that im quite pleased would be an understatement
[09:34:52] <jdh> was it doing anything?
[09:35:07] <taiden> glxgears and do loop
[09:35:09] <taiden> and ping
[09:41:59] <ktchk> Hi any working postgui.hal for joypad logitech?
[09:42:33] <jdh> there is a wiki entry for joypads (or two)
[09:42:53] <ktchk> the .hal file is for 2.4 not 2.5
[09:46:21] <taiden> i just copied over a backed up linuxcnc folder
[09:46:36] <taiden> how do i create the shortcut to open my machines configuration?
[09:47:07] <jdh> ktchk: might see if this helps: http://www.linuxcnc.org/index.php/english/component/kunena/?func=view&id=19139&catid=9
[09:47:44] <taiden> nvm i got it
[09:47:49] <jdh> taiden: you can make it by hand, or if you run linuxcnc from the menu, the configuration picker should have a checkbox in the lower left for shortcut
[09:48:05] <taiden> thanks, that's what it was :)
[09:50:05] <taiden> i need to edit my latency numbers, are they located in .hal?
[09:50:56] <skunkworks> taiden, nice find :)
[09:51:40] <taiden> funny story: after the stress test, I went to update firefox and it jumped to 25k :[
[09:51:57] <jdh> I have a $7 joypad coming from china to try out.
[09:52:18] <jdh> the shuttlexpress jog shuttle thingie works pretty well for jogging though.
[09:54:15] <skunkworks> a normal jog wheel is imho the best :)
[09:55:13] <jdh> the shuttlexpress can be a normal jog wheel
[09:55:46] <skunkworks> I thought those where pretty low count per rev - like 10 or 20
[09:56:09] <skunkworks> they look neat
[09:56:23] <jdh> you can step through incremental jog rates, or use the analog jog for varying speed
[09:56:56] <jdh> I think it is only 10 counts
[09:57:23] <taiden> i copied my old linuxcnc folder over, but i get unexpected realtime delay errors now
[09:57:41] <archivist> taiden, a latency killer for me, open a large txt in gedit and grap the scroll bar and scroll the text
[09:57:41] <taiden> having trouble locating in the docs where the latency numbers are stored in .hal or .ini or otherwise
[09:57:43] <ktchk> jdh: thanks but not what i needed
[09:58:04] <taiden> archivist: thanks, i'll give that a try
[09:59:47] <skunkworks> taiden, the latency numbers don't do anything in the hal files. It might calculate the base period for you. But the base period is what you want to look at.
[10:01:38] <ktchk> need the some thing like "net joy-x-jog halui.jog.0.analog <= input.0.abs-x-position" example
[10:02:33] <taiden> okay thanks skunkworks
[10:02:50] <taiden> so servo thread jitter actually doesn't effect me?
[10:03:03] <jdh> ktchk: is the pin name changed?
[10:03:50] <ktchk> jdh: I have a new logitech gamepod the pin name is different to the one in .hal
[10:05:19] <jdh> do the pins show up in hal config?
[10:06:01] <ktchk> yes i can see them in hal config how
[10:07:11] <ktchk> I can use the gamepad but some buttom not working and differente reponse
[10:07:28] <jdh> can you find the pins the buttons use in the config?
[10:08:09] <ktchk> pins name connect to button table is needed
[10:10:22] <taiden> "joint 2 following error"
[10:10:30] <taiden> any thoughts?
[10:10:53] <taiden> too fast stepper rpm for my base period?
[10:11:20] <skunkworks> taiden, that would be my guess
[10:13:59] <jdh> ktchk: you might ask on the forum. When you do figure it out, post a message so others can benefit.
[10:15:18] <ktchk> the forum have some .hal file for 2.4 and different made joypods need some names to start with
[10:15:48] <skunkworks> http://groups.yahoo.com/group/mach1mach2cnc/message/136479
[10:16:10] * skunkworks hugs linuxcnc
[10:18:36] <skunkworks> again
[10:18:36] <jdh> ktchk: right, so post a message and see if anyone else has already solved this.
[10:18:51] <ktchk> thanks
[10:19:15] <jdh> skunk: ouch
[10:19:20] <Tom_itx> would dmesg show the button pins?
[10:20:57] <ktchk> can start linuxcnc and use the hal config show to see pin names but what to connect to is a name of funtion is needed
[10:21:19] <skunkworks> http://linuxcnc.org/index.php/english/component/kunena/?func=view&catid=9&id=19139#19141
[10:21:34] <skunkworks> is it input.0.btn-trigger
[10:21:34] <skunkworks> to
[10:21:34] <skunkworks> input.0.btn-joystick .
[10:22:05] <taiden> is there any way to view latency while running linuxcnc?
[10:22:25] <ktchk> I have no input.0.btn-joystick
[10:23:07] <ktchk> it changed
[10:24:56] <Tom_itx> taiden i think they recomend not running linuxcnc while running the latency test
[10:30:42] <jdh> it's not a recommendation, it's the LAW
[10:42:43] <skunkworks> right - it just doesn't run :)
[11:21:32] <Tom_itx> pcw_home i copied all the config files over again, commented out the ncggui stuff since i don't have it installed yet and it seems to be working fine today
[11:32:00] <pcw_home> Weird...
[11:33:16] <Tom_itx> very
[11:33:20] <Tom_itx> but it's working now
[11:33:50] <Tom_itx> oh, i didn't recopy the bit files either, just used the ones from last night
[11:39:11] <pcw_home> maybe there was some minor file problem that triggered a bug. Thats all I can think of
[11:40:57] <pcw_home> Since you haven't seen any configuration failures ( a 212K byte transfer thats CRC checked by the FPGA) I dont think its a data integrity issue
[11:49:06] <joe9> alex4nder: sometime ago, you posted a picture of your taig setup. I was very impressed by the vacuum setup that you had. Would it be a big deal if I want to replicate that?
[11:49:16] <joe9> alex4nder: any suggestions, please?
[11:49:23] <joe9> ReadError: want to order more bits?
[12:05:01] <ReadError> joe9
[12:05:07] <ReadError> i do need some 60degree
[12:05:30] <joe9> ReadError: i am reading that dewtronics bits are better than the thinkntinker stuff.
[12:05:43] <joe9> did you try both 90 degree and 60 degree?
[12:05:53] <joe9> do you prefer the 60 degree over the 90 degree ones?
[12:06:07] <joe9> http://www.precisebits.com/lab_reports/bosch_colt_TIR.htm have you seen this, ReadError?
[12:07:10] <IchGuckLive> Hi all
[12:08:27] <joe9> http://www.precisebits.com/products/equipment/bosch_colt_collets_nuts.asp#Bosch_Colt_Collets
[12:09:21] <joe9> ReadError: http://www.millpcbs.com/phpbb3/viewtopic.php?f=8&t=10
[12:09:34] <joe9> " Also periodically use a Think N Tinker mechanical etching bit or the same angles, but have come to prefer the Drewtronics bits as less expensive, more durable, and provide as good of cut as I need."
[12:09:39] <joe9> -- from that link.
[12:09:43] <IchGuckLive> ther are mutch cheepeer collets then bosch
[12:10:01] <IchGuckLive> go with ER16 if you can
[12:10:06] * jthornton thinks I put up these temporary shelves that I'm taking down about 11 years ago
[12:10:16] <IchGuckLive> er20 or 25 is the bst to go on selfmade
[12:10:37] <joe9> https://docs.google.com/viewer?a=v&q=cache:CD56jkXj2X0J:www.millpcbs.com/index.php?view%3Darticle%26id%3D23%253Abits%26format%3Dpdf%26option%3Dcom_content%26Itemid%3D47+&hl=en&gl=us&pid=bl&srcid=ADGEESh1mWgAhUPq_GgnS5e3YRQW6SaHbe7NHFz4br7xK5FVENrYLT2mbx78Ptylx7z1im0Kvh1Stdbc7wKsf-LFa4KIJ5eWmkwq5tPVaG_XRyoLQIWQ0-LhetCrumb07QgOkvKoJrkH&sig=AHIEtbSoJosDvTXlhNxv1nIU653ODONZ7A&pli=1
[12:10:47] <joe9> IchGuckLive: ok, thanks.
[12:11:21] <archivist> jthornton, that really is temporary :)
[12:11:50] <jthornton> lol yea
[12:12:46] <joe9> IchGuckLive: i think I have ER16 collets. Is it worth buying the ER25 collets?
[12:13:09] <IchGuckLive> if you can go for ER32 they are 2-20mm
[12:13:11] <joe9> the ER16 collet is doing a good job. Just want to check if it is good for the machine to use ER25.
[12:13:18] <IchGuckLive> sets are around 100USD
[12:13:48] <joe9> btw, what is the "16" or "25" or "32"? is it a quality metric?
[12:13:52] <joe9> or, the size metric
[12:13:53] <jdh> size
[12:13:58] <IchGuckLive> joe9: you are on MK3 or 2 fit to the mashine
[12:14:14] <jdh> 25 just allows larger size than 16
[12:14:22] <IchGuckLive> its the diameter of the collet
[12:14:25] <joe9> oh, ok. thanks.
[12:14:42] <IchGuckLive> joe9: you are in the USA ?
[12:14:49] <joe9> i was thinking about the quality of the collets. If having a better quality collet will help the machine?
[12:14:52] <joe9> IchGuckLive: yes.
[12:15:30] <IchGuckLive> not the quality the clamp length to the tool gets the precission
[12:15:48] <joe9> IchGuckLive: oh, ok.
[12:16:07] <joe9> anyone with experience with Dewtronics bits vs thinkNtinker bits?
[12:16:28] <IchGuckLive> http://www.maritool.com/ER-Collets
[12:17:01] <IchGuckLive> he has all the nice ER TG SC 5C collets
[12:17:35] <joe9> http://www.drewtronics.net/ ReadError
[12:18:22] <IchGuckLive> oh that bits are not cheep
[12:19:20] <joe9> https://www.thinktink.com/cgi-bin/cart32.exe/thinktinkcom-additem better than these.
[12:19:24] <IchGuckLive> i got myself a dimand sharpen blade and made out of soome lost pins a sharpen bit to V-shape my broken drills
[12:19:37] <joe9> not sure if the ZrN coating and the flutes really help
[12:19:55] <IchGuckLive> as a bit is only good for about 10-15meters of milling on FR4
[12:20:25] <IchGuckLive> its better to do it on your own for many millings
[12:20:53] <IchGuckLive> insted the costs for milling is double thew photo layer production for one plade
[12:21:21] <Jymmm> What does a higher carbon content in an alloy (SS) give you?
[12:21:38] <IchGuckLive> here in germany you can get half a Eurocard 160x80 in 1 week done for 10Euros
[12:23:04] <Jymmm> What is a eurocard?
[12:23:22] <IchGuckLive> standard FR4 plade 160x80mm
[12:23:28] <IchGuckLive> PCB
[12:23:42] <Jymmm> ah
[12:23:56] <IchGuckLive> s thre a differend messurment on the USA side
[12:24:01] <Jymmm> I thought it was something to identify all the Euro trash =)
[12:24:03] <IchGuckLive> or imperial standard
[12:26:26] <IchGuckLive> joe9: http://www.ebay.com/sch/i.html?_trksid=p5197.m570.l1313&_nkw=collet+er32&_sacat=0
[12:28:07] <joe9> IchGuckLive: thanks. will check them out.
[12:28:15] <Loetmichel> re @ home
[12:30:40] <IchGuckLive> joe9: if you need straight -> http://www.ebay.com/sch/i.html?_sacat=0&_nkw=er+32+collet+straight
[12:31:31] <joe9> IchGuckLive: what is the "straight" used for?
[12:32:02] <IchGuckLive> it depends on your mashine
[12:32:15] <IchGuckLive> cone fastener is standard
[12:32:15] <Loetmichel> joe9: to make your own spindles?
[12:32:59] <Loetmichel> like this for example? .> http://www.cyrom.org/palbum/main.php?g2_itemId=12846
[12:33:22] <Loetmichel> just that i had used a Proxxon shaft instad of an er11 shaft
[12:33:31] <IchGuckLive> Loetmichel: did you make the control also byyourself
[12:33:45] <Loetmichel> i am in the process of making it
[12:34:06] <Loetmichel> its just a BIG fet, a 12V 20A psu and an AVR ;-)
[12:34:11] <IchGuckLive> left right or only one direction with speedcontrol
[12:34:29] <Loetmichel> only one direction
[12:35:32] <IchGuckLive> avr for signal dividing
[12:35:56] <alex4nder> joe9: hmm, I think I showed a video of me manally vacuuming, and then the coolant setup I used
[12:36:55] <joe9> alex4nder: there was the flexible hose for the coolant and (I thought) another for vacuuming.
[12:37:13] <alex4nder> two for coolant, and then I have a giant one for vacuuming but I never showed that off.
[12:37:22] <alex4nder> the giant one is the size of your fist
[12:37:25] <alex4nder> with a big mouth
[12:37:56] <alex4nder> http://www.amazon.com/dp/B006R9OV94/?tag=hyprod-20&hvadid=19391569536&hvpos=1o3&hvexid=&hvnetw=g&hvrand=18984182711313876675&hvpone=&hvptwo=&hvqmt=&ref=asc_df_B006R9OV94
[12:40:25] <joe9> alex4nder: oh, ok. 2 for coolant. I thought one was for the coolant and the other for vacuuming. my bad. sorry about that.
[12:43:59] <alex4nder> joe9: you could use them for that though
[12:44:04] <alex4nder> you'd just not get a lot of flow
[12:51:04] <joe9> ReadError: want these bits? http://drewtronics.net/
[12:52:35] <Loetmichel> IchGuckLive: avr for gernating the PWM and regulating the rpm with a reflex switch
[12:53:16] <IchGuckLive> ok not via linuxcnc
[12:53:34] <IchGuckLive> pulsin can scan the pulswith
[12:53:44] <IchGuckLive> or the interruppt
[12:54:43] <Loetmichel> IchGuckLive: why use a good portion of the CPU power just for regualting the rpm?
[12:54:59] <IchGuckLive> why not
[12:55:14] <IchGuckLive> do you generate a new reprap board
[12:55:26] <Loetmichel> a small tiny2313 is sufficient for reading a pwm from the LPT for spindle speed and regulating the real RPM accordingly.
[12:56:08] <IchGuckLive> agree i woudt go for M8
[12:56:11] <Loetmichel> and can even drive a 4 digit display
[12:56:17] <IchGuckLive> at 24Mhz
[12:57:27] <IchGuckLive> Loetmichel: rpm check via cny70
[12:57:40] <Loetmichel> IchGuckLive: something like that
[12:58:06] <IchGuckLive> i did this on the Drill and on the Windmill
[12:58:10] <Loetmichel> maybe i use a tiny magnet and a induction coil... more reliable when dust and oil haze is in play
[12:58:59] <joe9> ReadError: i am about to place the order. waiting to hear back from you..
[12:59:01] <IchGuckLive> you know better then i
[13:01:23] <IchGuckLive> Loetmichel: at 20A on the FET do you need a fetdriver between AVR
[13:03:13] <cpresser> IchGuckLive: that does not depent on Ids, but rather on how fast you want to switch (gate capacity)
[13:03:55] <pcw_home> Also if AVR is 3.3V you need a logic level MOSFET
[13:03:56] <IchGuckLive> ok i never worked with a FET
[13:05:43] <cpresser> check the Rds-Value for you Ugs (Datasheet) and calculate Rds*Ids^2 to see how much power the package will need to dissipate
[13:06:30] <IchGuckLive> pcw_home: Hi it woudt be good if get some notices on your page on how to use the proximity switches with your boards
[13:07:00] <Loetmichel> IchGuckLive: no
[13:07:18] <Loetmichel> its a lowside fet, ttl gate
[13:07:30] <pcw_home> Yeah the manuals are more for OEMs
[13:07:38] <Loetmichel> and the avr is 5V
[13:07:49] <Loetmichel> why shoud i use it with 3.3V without need?
[13:08:19] <pcw_home> I forget that 5V chips still exist
[13:08:40] <IchGuckLive> 5V is popular in Europ
[13:09:01] <Loetmichel> pcw_home: all 8 bit avr can operate at 5V
[13:09:02] <IchGuckLive> i only went 3.3 for the astro stuff
[13:09:28] <Loetmichel> and most at 3,3V with lower clock
[13:09:38] <cpresser> 5V it is for DIY-Stuff, most professionals use 3.3V for new µC-Designs
[13:09:45] <pcw_home> Industrial stuff is usually 5V min (not many 3.3V encoders for example)
[13:10:06] <pcw_home> latest FPGAs dont even do 3,3
[13:10:28] <pcw_home> 3.3 is the new 5
[13:10:31] * cpresser had to buy some 1.8V LDOs :)
[13:10:38] <Loetmichel> cpresser: again: why should i use 3,3V if i have 12V supply and the 5V fets are much more common than 3.3V types?
[13:11:04] <cpresser> Loetmichel: i didnt say that. for most designs in that area 5V is fine
[13:11:22] <pcw_home> For simple things , no reason but if you need speed you will find no 5V chips
[13:11:34] <Loetmichel> pcw_home: speed?
[13:11:38] <cpresser> i also do some applications with Lowside FETs attached directly to the µC (@5V)
[13:11:41] <Loetmichel> in an 8bit avr?
[13:11:59] <pcw_home> In general
[13:12:27] <pcw_home> AVRs use ancient design rules (80s?)
[13:12:47] <IchGuckLive> Lowside FETs any numbers on that to buy
[13:13:04] <Loetmichel> why should i shoot with cannons on sparrows?
[13:13:28] <IchGuckLive> i usa also 5V AVR in all aplications
[13:13:34] <pcw_home> Just saying in general 5V is (slowly) going away
[13:13:38] <IchGuckLive> most Mega8
[13:13:47] <Loetmichel> a Avr tiny 2313 IS old... but cheap and perfectly fit for some PWM and speed regulation.
[13:13:52] <Loetmichel> ... AND at hand ;-)
[13:14:12] <DJ9DJ> nearly as old as you are *searching cover and hiding*
[13:14:15] <DJ9DJ> ;-)
[13:14:36] <pcw_home> the more heat sinking the cheaper the FET
[13:14:38] <Loetmichel> DJ9DJ: not even remotely
[13:14:42] <Loetmichel> i am MUCH older ;-)
[13:14:43] <IchGuckLive> Loetmichel: FET name Available at reichelt ?
[13:15:12] <DJ9DJ> hihi
[13:15:18] <Loetmichel> have none, will use some from another project
[13:15:26] <IchGuckLive> ok
[13:15:55] <cpresser> "IRF540" will work fine with a avr for Lower Frequencys
[13:16:50] <pcw_home> If you have a heat sink and can afford some power dissipation you can use a higher Ron
[13:16:52] <pcw_home> and thus get better speed (since it will have lower gate /miller capacitance)
[13:16:56] <Loetmichel> wil use an IRLR7843
[13:17:07] <Loetmichel> but the IRF5490 will do fine, as cpresser said
[13:17:34] <IchGuckLive> thanks
[13:17:35] <Thetawaves> are you sure the avr can source enough current to directly drive the irf540?
[13:17:39] <Loetmichel> 540
[13:17:56] <pcw_home> What PWM frequency?
[13:18:01] <Thetawaves> i always put a transistor in the middle to speed up switching of the mosfet... generates less heat
[13:18:10] <Loetmichel> Thetawaves: if your pwm stays below 20khz: sure!
[13:18:28] <pcw_home> what is the MOSFET driving?
[13:18:44] <cpresser> Thetawaves: my application switches with 200Hz only, thats almost DC :)
[13:19:47] <Thetawaves> even at 200hz, if your mosfets stay in transition mode too long, you'll be able to fry eggs
[13:20:06] <Loetmichel> pcw_home: i think IchGuckLive wants to copy that: http://www.cyrom.org/palbum/main.php?g2_itemId=12846
[13:20:42] <pcw_home> DC spindle control?
[13:20:49] <IchGuckLive> yes
[13:21:20] <Loetmichel> Thetawaves: an AVR can source about 30mA and sink about 50. no need for a mosfet driver below 20khz PWM
[13:22:37] <pcw_home> That does depend on the MOSFET size (and voltage)
[13:23:32] <Loetmichel> ... and if i hadn't so much work lately, the small CNC mill the spindle is for would be already running. ( last week over 65 hrs on the work sheet...)
[13:24:59] <Loetmichel> pcw_home: i had the IRF540 in mind.
[13:24:59] <Loetmichel> and the motor in the pic, 12V 21A max
[13:25:00] <cpresser> That is how Uds looks (about 2Amp load) with a Mega8 -> 10k -> Gate of IRF540 http://imagebin.org/223201
[13:25:00] <cpresser> not nice, but i dont care, since i am driving LEDs
[13:26:13] <Thetawaves> ok, cool
[13:26:59] <Loetmichel> why the 10k in the gate?
[13:27:02] <Loetmichel> emi?
[13:27:18] <Jymmm> cpresser: What is that shiny thing with teal colored lines on it?
[13:27:19] <cpresser> yep
[13:28:31] <cpresser> Jymmm: nuclear-missle control system
[13:29:03] <Jymmm> cpresser: Cool! does it have a FB and Tweeter account?
[13:29:27] <cpresser> check fb.com/TekTDS460-Missle
[13:29:38] <Jymmm> lol
[13:34:34] <pcw_home> If you only have 12V, a lower voltage MOSFET will have better performance (lower gate capacitance or lower on resistance for the same gate capacitance) For example the IRLB8721PBF is about 1/3 the on resistance of the IRF540 and 1/2 the gate capacitance
[13:59:14] <Tom_itx> JT-Shop, pcw_home what's the daughter card that goes along with the 5i25?
[13:59:24] <Tom_itx> for stepper configuration
[14:01:30] <micges> 7i76
[14:01:43] <Tom_itx> thanks
[14:03:18] <pcw_home> Well theres on without the I/O (7I78)
[14:04:05] <pcw_home> one
[14:06:06] <micges> hi Peter
[14:06:27] <pcw_home> Hi micges
[14:27:54] <pcw_home> micges: Ive been pounding on the 7I80b Ethernet and it seems pretty good for a Beta
[14:27:56] <pcw_home> BootP works and I added the random TID its supposed to have so other than some testing
[14:27:58] <pcw_home> and perhaps performance tweaking it seems OK to release
[14:28:22] <skunkworks> pcw_home, that sounds very cool!
[14:28:50] <micges> pcw_home: that's great
[14:28:50] <skunkworks> I assume it take daughter boards of some kind?
[14:28:58] <pcw_home> Yet another connect method for HM2
[14:30:08] <pcw_home> Yeah the current card (7I80DB) uses the DB25 daughtercards (up to 4)
[14:30:10] <pcw_home> but theres a 7I80HDR for 50 pin daughtercards coming
[14:31:15] <pcw_home> (with 3 connectors)
[14:31:32] <Jymmm> pcw_home: Didn't 50pin anything go out with rotary business phones and SCSI way back in the last century? <ducks>
[14:32:04] <pcw_home> Well people still use the OPTO22 stuff
[14:32:19] * skunkworks raises hand
[14:32:23] <micges> and 7i40
[14:32:44] <Jymmm> pcw_home: JUST teasing =) Though it is nice (if you can find them) to be able to use old scsi cables
[14:33:09] * Jymmm smacks skunkworks hand with panduit!
[14:33:39] <Jymmm> (cover not included)
[14:33:49] <pcw_home> Yeah and 7I29 and 7I49 and 7I30 (though we will have more SSerial interfaced drives this year)
[14:34:38] <pcw_home> and 7I39
[14:35:35] * Jymmm received packaging and ink samples and is just bouncing around all giddy like!
[14:36:20] <skunkworks> pcw_home, is the hm already setup to do eithernet?
[14:36:28] <skunkworks> hm2
[14:37:30] <pcw_home> Well the easy part is done (Ethernet --> UDP --> LBP16 --> HM2)
[14:38:45] <skunkworks> what kind of roud trip times are you getting?
[14:38:52] <skunkworks> round
[14:39:00] <pcw_home> the hard part is integrating a real time polled Ethernet driver in to HAL (and then the fairly simple task of packing and unpacking the commands)
[14:39:37] <skunkworks> that is pretty cool - realtime control of the eithernet attached device. Impresive
[14:39:40] <Jymmm> pcw_home: Is that via a crossover cable? a hub? a switch?
[14:39:50] <pcw_home> for normal 4/5 axis sized stuff its in the 70 Usec region
[14:40:08] <pcw_home> Faster than the 7I43/ slower than the PCI cards
[14:40:15] <skunkworks> right
[14:40:39] <pcw_home> The PHY is MDIX so any cable works
[14:40:59] <skunkworks> neat
[14:41:01] <Jymmm> pcw_home: Not cabling, but switching for the RT stuff
[14:41:18] <Jymmm> pcw_home: VPN and all that
[14:41:39] <pcw_home> Normally you would use a dedicated port so switches are not an issue
[14:42:04] <Jymmm> pcw_home: dedicated how? hub/switchless?
[14:42:18] <pcw_home> point to point
[14:42:42] <pcw_home> If its real time you cant have other traffic
[14:42:58] <Jymmm> pcw_home: Ok, so if need 500ft, you could NOT use a switch to extend the length.
[14:43:08] <Jymmm> err 500m
[14:43:12] <cpresser> switches also do store/forward, you don want that
[14:43:28] <Jymmm> cpresser: That why I asked, but a hub doesn't =)
[14:43:30] <Connor> jdh: Got my solenoid valves, fittings, and tubing in today!
[14:43:32] <cpresser> Jymmm: media-converter -> fiber optics
[14:43:36] <pcw_home> Sure you could but it would increase the turnaround time
[14:43:56] <pcw_home> Are hubs even made anymore?
[14:44:03] <Jymmm> pcw_home: yes
[14:44:26] <Jymmm> cpresser: no emi/rfi either
[14:44:44] <Jymmm> cpresser: 30KM range too =)
[14:45:03] <pcw_home> so that would work
[14:45:24] <Jymmm> cpresser: I have a 5 seconds fiber delay box =)
[14:45:45] <Jymmm> maybe 3s
[14:45:48] <cpresser> depending on the environment, fiber-optics is superior to RJ45 in terms of durability
[14:46:06] <Jymmm> but not for short runs
[14:46:24] <Jymmm> cost is just too high
[14:46:25] <cpresser> at least for professional sound-systems & PA the guys prefer fiber over copper nowadays
[14:46:40] <Jymmm> I can see that, long runs too
[14:47:29] <micges> I saw fiber on very large Okuma mill
[14:47:55] <micges> cables were much more than 15m
[14:50:06] <L84Supper> we worked with FCI back in the late 90's to make single mode fiber connectors for tablets used in aerospace MRO, durability was in the few k's of plug and unplug
[14:50:39] <L84Supper> are these common now or do most apps just use copper?
[14:52:23] <pcw_home> Much fewer EMI issues if you can afford it
[14:52:25] <pcw_home> Theres a connectorless fiber system we looked into for SSerial: Optolock?
[14:52:27] <pcw_home> The transmitters and receivers still made it pretty expensive
[14:53:04] <Jymmm> pcw_home: why not the S/PDIF connectors?
[14:53:31] <Jymmm> unconventional, bot plentiful
[14:53:37] <Jymmm> but
[14:54:16] <Jymmm> I'm sure some kind of locking system could be added
[14:55:43] <pcw_home> Heres something using the OPTOLock connectors:
[14:55:45] <pcw_home> http://www.fiber-optic-media-converter.com/china-lightweight_one_fiber_port_plastic_optical_fiber_pof_network_with_optolock_connectorless-67987.html
[15:00:41] <skunkworks> andypugh, http://www.buildlog.net/forum/viewtopic.php?f=16&t=557
[15:02:09] <Connor> Question guys... is Port Size PT the same as NPT ?
[15:02:40] <andypugh> skunkworks: Anything in particular?
[15:03:10] <skunkworks> you have to wade through it - but I think he has built on the rasting stuff people have done with emc
[15:08:05] <skunkworks> andypugh, https://github.com/bjj/2x_laser
[15:09:15] <andypugh> Is that related to graster?>
[15:10:11] <skunkworks> I think he started there...
[15:10:12] <skunkworks> https://github.com/bjj/2x_laser/blob/master/README.md
[15:10:18] <skunkworks> kinda explainds it
[15:10:44] <andypugh> Reading something similar now.
[15:13:21] <pcw_home> Andy does your raster code use halstreamer?
[15:14:45] <Connor> jdh: You there ?
[15:22:40] <jdh> am now.
[15:22:47] <andypugh> pcw_home: It doesn't use anything at the moment, but if I get it working it won't use any external HAL components.
[15:23:08] <Jymmm> Guys, I got a question... If a container intended for retail packaging of a product costs $0.70/ea and a seal to prevent tampering on the shelf cost $0.17/each, Would you add the seal?
[15:23:32] <andypugh> It looks in a dedicated are of shared-memory for pre-processed image data, and reads it direct.
[15:23:44] <Jymmm> The seal is NOT required to maintain the integrity of the contianer.
[15:23:49] <Thetawaves> Jymmm, what is the rate of theft without the seal?
[15:23:58] <andypugh> I wouldn't.
[15:24:21] <Jymmm> Thetawaves: Theft, zero. Open the contiainer on the shelf, probably high.
[15:24:37] <Jymmm> ^to get a better look at the product.
[15:24:37] <Thetawaves> whats wrong with that?
[15:25:24] <jdh> if it is non-cheap and I want to see it first, I'm opening it.
[15:25:30] <Jymmm> It's a consumable product that could (somewhat) leak. Think playdough or lotions.
[15:25:38] <jdh> then, I'll put it back on the shelf and buy a sealed one.
[15:25:46] <Thetawaves> oh, in that case you should seal it
[15:25:53] <pcw_home> We have a customer that needs something similar (thou maybe with gcode paths)
[15:25:55] <pcw_home> I was thinking the data could be painted out with the sqrt(X^2+Y^2) velocity from the encoders
[15:26:09] <Jymmm> then you have the PITA like jdh
[15:26:24] <Thetawaves> yeah, display a sample :D
[15:26:35] <andypugh> pcw_home: I thing that is exactly what graster does.
[15:27:28] <Jymmm> can't do that, but if like jdh mentality, why would you break a seal, look at soemthing, know it good/working order, then put it back just to grab one that "SHOULD" be in working order, but not verified.
[15:27:28] <pcw_home> (with the ability to use a hardware FIFO for higher modulation rate if need be)
[15:28:03] <Jymmm> jdh: Nt ragging you, just use you as a good example.
[15:28:10] <Jymmm> using
[15:28:12] <jdh> I'm usually the other kind.
[15:28:26] <Jymmm> other?
[15:28:40] <Jymmm> bad example?
[15:29:16] <Jymmm> the container is clear fwiw
[15:31:13] <Jymmm> I"m just not sure if it's worth it or not to add a 25% markup for the seal plus the time and labor to apply it.
[15:32:31] <Jymmm> It's not for purposes of safety, just ppl on the shelf messing with it.
[15:56:05] <taiden_> anyone ahve a good CAM program for engraving?
[15:56:12] <jthornton_> is there a place called Frunberg Fermany
[15:56:34] <andypugh> Grunberg, Germany>
[15:56:37] <andypugh> ?
[15:56:50] <andypugh> taiden: Might be worth looking at Freemill.
[15:57:04] <jthornton_> could be
[15:57:27] <taiden_> holy moly
[15:57:33] <taiden_> how have I never seen freemill before
[15:58:27] <taiden_> Oh, I cut out twelve parts today with no errors thanks to the new cnc box
[15:58:28] <andypugh> There definitely is a Grunberg in Germany. And F is next to G even on a German keyboard.
[15:59:03] <jthornton_> his web page is luttegrandt.de
[15:59:15] <jthornton_> it all appears to be in german
[15:59:20] <sumpfralle1> @taiden: maybe take a look at pycam
[16:26:58] <DJ9DJ> gn8
[17:02:57] <andypugh> PCW: What is the problem with zero as maxaccel for the stepgens?
[17:15:36] <Tom_itx> andypugh why would you?
[17:15:55] <andypugh> It means "no limit"
[17:16:02] <Tom_itx> oh
[17:16:37] <Tom_itx> it would cause cogging on a stepper wouldn't it?
[17:17:03] <Tom_itx> if the hardware could take it i suppose
[17:17:33] <andypugh> There is limiting in the trajectory planner, it is not clear why you need a second stage in the stepgen
[17:18:58] <Tom_itx> to tune the hardware?
[17:19:29] <andypugh> ?
[17:19:48] <Tom_itx> i don't understand how linuxcnc internals work i guess
[17:24:02] <Tom_itx> andypugh what are you working on?
[17:24:39] <andypugh> At the moment, a problematic gantrykins config from the forum.
[17:25:49] <Tom_itx> how do you describe the tool tip of a touch probe to linuxcnc so you get accurate surface probing?
[17:26:01] <Tom_itx> all you have in the tool table is the diameter
[17:26:29] <Tom_itx> i suggested the other day maybe it needs a tip diameter entry in the table as well
[17:26:44] <andypugh> You can't
[17:26:51] <Tom_itx> so it can adjust the geometry approach on a surface
[17:27:06] <andypugh> LinuxCNC has no idea where the surface has touched the tip,
[17:27:39] <andypugh> So can't do the calculation you are asking for.
[17:27:47] <Tom_itx> it knows the direction of travel
[17:27:54] <andypugh> And?
[17:27:58] <Tom_itx> if it knew the sphere shape it could
[17:28:24] <Tom_itx> i'm not saying it would be easy or maybe not worth the effort
[17:28:27] <andypugh> I disagree. Consider probing a near-vertical surface vertically.
[17:28:58] <Tom_itx> our cmm had different modes for probing
[17:29:07] <andypugh> I think you could post-process the point-cloud, because then there is more shape data.
[17:29:28] <Tom_itx> the points could be off the diameter of the probe tip though
[17:29:49] <andypugh> But there are an infinite number of points on the probe tip.
[17:30:16] <Tom_itx> so are you better off probing with a pencil tip point?
[17:30:31] <andypugh> For 3D surfaces, I think you are.
[17:30:44] <Tom_itx> does probing read the tool diameter in the tool table?
[17:30:52] <Tom_itx> if you enter it as a tool
[17:30:58] <andypugh> Length, I think.
[17:31:05] <Tom_itx> but not diameter?
[17:31:21] <andypugh> It will read the diameter, but unless you probe in G42, it will ignre it.
[17:32:05] <Tom_itx> maybe in that case a flatbottom small diameter tip would be most accurate
[17:32:10] <andypugh> If you probe with a ball the exact diamter of your ball-nose cutter and perform no other compensations you will get a perfect copy, though.
[17:43:51] <Tom_itx> what linux utility will show your system status
[17:43:57] <Tom_itx> ie memory cpu type etc
[17:55:56] <joe9> just wanted to get an opinion on the "touch plate" mentioned here? http://cockrum.net/cnc.html
[17:56:08] <joe9> Is it ok for the drill bit to press up against the drill bit?
[17:56:33] <joe9> or, will it cause destruction of the drill bit when it touches something without rotation?
[17:57:06] <jdh> I assume you typo'ed the first sentence?
[17:58:48] <DaViruz> joe9: copper is way softer, so you'll be fine as long as you don't overtravel and snap it
[17:59:28] <joe9> DaViruz: thanks. I plan on moving with increments of 0.001 inch. Would that be good enough?
[17:59:35] <joe9> or, should I be moving slower than that?
[18:00:01] <DaViruz> that'll be fine
[18:00:24] <DaViruz> (i believe)
[18:01:50] <tjb1> garage is cleaned out to begin building plasma table :)
[18:15:01] <andypugh> joe9: Maybe make something a little more elaborate and spring-loaded?
[18:19:21] <joe9> andypugh: that is what I was thinking. but, this seems simple and if it works, then ofcourse this would be cool.
[18:19:45] <joe9> without screwing the bits, I meant.
[18:21:25] <joe9> http://www.edgetechnologyproducts.com/pro-touch-off-gage.html andypugh, this is the more elaborate version.
[18:22:26] <andypugh> Hmm, not as convenient though.
[18:23:16] <andypugh> I have seen systems with a spring-loaded plunger and a wire like the one shown.
[18:24:45] <joe9> andypugh: any pics, please?
[18:27:11] <andypugh> http://softsolder.com/2010/04/14/emc2-ugliest-tool-length-probe-station-ever/
[18:27:27] <andypugh> http://www.worldofcnc.com/cnc-machine-accessories/accessories/tool-length-sensor-p-1271.html
[18:27:55] <andypugh> http://emergent.unpythonic.net/01216264526
[18:32:32] <joe9> andypugh: thanks.
[18:33:18] <joe9> andypugh: quick question, is there anything that I can do from linuxcnc to automate the tool length setting?
[18:33:26] <r00t4rd3d> http://mikerea.com/?page_id=351&photo=9
[18:33:36] <andypugh> Yes
[18:34:09] <andypugh> joe9: How elegant do you want to make it?
[18:34:15] <elmo40> lol
[18:34:17] <elmo40> so true
[18:34:47] <joe9> andypugh: something simple like a home/limit switch
[18:35:00] <joe9> andypugh: i like this idea http://emergent.unpythonic.net/01216264526
[18:35:09] <andypugh> You could just call a probe subroutine after tool-change, or you can remap M6 to do the whole probing thing automatically.
[18:35:40] <joe9> oh, cool. will check out M6. thanks.
[18:35:51] <andypugh> Do I mean M6?
[18:36:05] <Tom_itx> yes that's tool change
[18:36:16] <andypugh> Easy way would look like
[18:36:20] <andypugh> T3 M6
[18:36:30] <andypugh> O<toolprobe> call
[18:36:33] <andypugh> G43
[18:36:42] <andypugh> Neat way just looks like
[18:36:47] <andypugh> M6T3G43
[18:36:56] <Tom_itx> then your H word read after that
[18:37:06] <andypugh> I never bother with H
[18:37:21] <Tom_itx> i like to keep some tools in holders preset
[18:37:27] <Tom_itx> so i use the tool table
[18:37:45] <andypugh> You only need H if you want to use a different offset to the one corresponding to the tool pocket
[18:38:20] <Tom_itx> maybe so, it's just good practice
[18:52:13] <r00t4rd3d> http://www.cnn.com/
[18:52:22] <r00t4rd3d> notice anything about all 3 swimmers?
[18:53:42] <r00t4rd3d> You could tell me any one was a inbred from west virginia and i would take you for your word
[18:55:32] <r00t4rd3d> all that chlorine must do something to them
[18:59:25] <jdh> UPS says they delivered my 1.5" x 36" W1 drill rod. Get the box off the porch, it's empty.
[18:59:46] <jdh> wish he would have knocked or something.
[19:00:15] <andypugh> Well, I guess the delivery guy wasn't to know it had escaped. It's probably wrecked an expensive parcel sorting line somewhere.
[19:00:52] <jdh> probably. One corner of the 4"x4" box was ripped, I assume it fell out the bottom.
[19:01:22] <r00t4rd3d> check out this hand gun
[19:01:24] <r00t4rd3d> http://technabob.com/blog/wp-content/uploads/2012/08/swissmini_gun_2.jpg
[19:01:24] <jdh> that end of the box was oddly taped though. Looked like it might have been noticed and 'fixed'
[19:01:46] <r00t4rd3d> now look at it here
[19:01:48] <r00t4rd3d> http://technabob.com/blog/2012/08/02/worlds-smallest-gun/
[19:02:15] <jdh> damned swiss gun nuts.
[19:02:32] <r00t4rd3d> make me one of them on your fanct cmc machines
[19:03:29] <andypugh> Ah, yes, the rarther rare 2mm caliber.
[19:04:16] <r00t4rd3d> try and rob a bank with that
[19:04:30] <andypugh> http://en.wikipedia.org/wiki/2_mm_pinfire
[19:04:34] <r00t4rd3d> DONT MAKE ME PUT A CAP IN YOU!
[19:05:21] <r00t4rd3d> i bet i could fly all over usa with that clipped to my belt
[19:06:19] <andypugh> Not to be confused with 2-bore: http://en.wikipedia.org/wiki/2_bore
[19:09:48] <Jymmm> $469K
[19:12:27] <Jymmm> In 304-2B, what is a "2B" finish?
[19:13:08] <r00t4rd3d> ss
[19:13:56] <r00t4rd3d> http://www.askzn.co.za/tech/tech_finishes.htm
[19:14:03] <r00t4rd3d> read that james
[19:58:33] * jdh hands out better interwebbe connections
[20:15:14] <andypugh> I think I definitely need to look at up-speeding my spindle. Now I have the encoder I can confirm that it runs 50-1000rpm in high gear, and 0.5 to 45rpm in low gear. I wanted a milling machine not a clock or a record player.
[20:16:41] <andypugh> You back then?
[20:16:44] <andypugh> No
[20:18:25] <Tom_itx> heh
[20:18:36] <Tom_itx> are the gears ok with a higher rpm?
[20:19:09] <Tom_itx> maybe an op could boot him until he pm's someone that his connection is fixed
[20:19:14] <Tom_itx> it's the polite thing to do
[20:19:22] <Tom_itx> for all concerned
[20:26:17] <andypugh> Tom_itx: There were two optional belt ratios and 2 optional vertical head ratios. The belt ratios gave 1000 or 1500 rpm on the horizontal spindle, and the vertical head head gave either 1:1 or 1.86:1 depending on option. So 2800rpm was a standard option. I have the slowest possible combination. I can compensate for the belt ratio with the VFD, but I am chary of going all the way to 140Hz on the VFD to emulate the high-sp
[20:26:17] <andypugh> head.
[20:28:19] <r00t4rd3d> kick him
[20:29:12] <andypugh> The vertical head ratio was set by a pair of helical gears, I am wondering about using a toothed belt, as they are easier to buy.
[20:29:40] <andypugh> r00t4rd3d: I am not sure who has the Power.
[20:29:49] <r00t4rd3d> Jymmm
[20:34:47] <Tom_itx> jepler, cradek, SPandos, alex_joni_ and Jymmm could
[20:35:06] <r00t4rd3d> and they all afk
[20:35:12] <r00t4rd3d> though Jymmm is never afk
[20:35:26] <Tom_itx> or prefer to remain neutral
[20:35:27] <andypugh> To think, I could have got the 45,000 rpm model http://www.lathes.co.uk/harrisonmiller/page2.html
[20:35:33] <Tom_itx> which an op shouldn't do
[20:35:40] <r00t4rd3d> my router does 26,000 rpm :)
[20:35:45] <Tom_itx> andypugh that would have been nice
[20:36:41] <Tom_itx> i wonder at what point they start balancing the assemblies
[20:37:29] <andypugh> i would prefer, say, 250 to 5000 rpm for the work I do. I certainly can't imagine needing the 45rpm setting (which with the VFD is completely un-stoppable with an 18" spanner at 0.5rpm)
[20:39:03] <Tom_itx> i think i figured my new pulley would top out around 5500 rpm
[20:39:29] <Tom_itx> and if my spindle encoder is accurate it's pretty close to that
[20:42:40] <Tom_itx> i put a frequency counter on it and i seems to be
[20:51:41] <Connor> Can someone do something about mhaberler ?
[20:52:56] <Tom_itx> jepler, cradek, SPandos, alex_joni_ and Jymmm could
[20:54:04] <Tom_itx> you can add a kick message to pm when it's fixed
[20:54:23] <Tom_itx> most ppl understand that
[20:54:36] <Jymmm> mhaberler: change your nick to get back in, your connection is bouncing
[20:54:54] <Tom_itx> i doubt he gets the message Jymmm
[20:55:34] <andypugh> It's 0344 in .de He's asleep at the wheel.
[20:55:43] <Tom_itx> yes
[20:56:22] <Tom_itx> set /mode +b *!*mhaberler@extern-182.stiwoll.mah.priv.at
[20:56:29] <Tom_itx> or such
[20:59:29] <Tom_itx> you can also reverse it tomorrow or such once he realizes
[21:00:13] <Jymmm> Tom_itx: do yu want to tell me how to wipe my ass too?
[21:00:37] <Tom_itx> seems ops here need all the help they can get
[21:01:04] <Jymmm> I'm just busy atm
[21:04:19] <Tom_itx> well that killed the channel
[21:06:56] <andypugh> I miss him already
[21:09:11] <Tom_itx> i gotta get a design figured out for an A axis
[21:09:19] <Tom_itx> something small that will fit my little mill
[21:10:29] <jdh> http://www.sherline.com/8730pg.htm
[21:10:32] <jdh> how about one of those
[21:11:19] <Tom_itx> that would be too easy
[21:12:23] <jdh> those only mount flat?
[21:12:43] <Tom_itx> no i think it'll stand on end too
[21:13:05] <andypugh> $395!
[21:14:32] <andypugh> Actually, I guess I would want at least that if I was selling mine.
[21:15:01] <Tom_itx> it's not something i would use that often though
[21:19:24] <Jymmm> How can I punch a 2.5" disc from SS ?
[21:19:45] <Jymmm> 2.5625" / 65.1mm specifically
[21:20:07] <jdh> I punched one hole in SS with a harbor freight punch set.
[21:20:11] <Tom_itx> how thick?
[21:20:23] <jdh> it was a SS outlet cover thing
[21:20:25] <Tom_itx> jdh was the punch junk afterward?
[21:20:27] <Jymmm> 0.024"
[21:20:28] <jdh> they gave me a new one
[21:20:46] <Jymmm> jdh: which one?
[21:20:46] <jdh> it's still in the box.
[21:21:10] <jdh> I don't remember. Probably 1", it was a switch mount
[21:21:14] <Tom_itx> Jymmm use the end of a pipe and sharpen it
[21:21:35] <Jymmm> I ned to make a LOT of these
[21:21:37] <Jymmm> need
[21:21:46] <Tom_itx> then you better have a punch made
[21:21:49] <Tom_itx> mating parts
[21:21:55] <Jymmm> no
[21:22:01] <Tom_itx> make one yourself
[21:22:13] <jdh> outsource
[21:22:26] <Jymmm> jdh: $469,105 USD
[21:23:03] <Tom_itx> make a cup for the underside and a curved cutter piece to fit it from the top
[21:23:34] <jdh> http://www.ebay.com/itm/300753677170
[21:23:37] <Tom_itx> how many is alot?
[21:23:39] <jdh> kind of a trunion table?
[21:24:05] <Jymmm> Tom_itx: 50K+
[21:24:47] <Tom_itx> you need something made from tool steel properly
[21:25:43] <Tom_itx> with dowel guide pins springs to return it and cork in the relief to push out the part
[21:26:13] <Jymmm> Yeah, no mill and no off the shelf stock the size I'd prefer
[21:26:43] <Tom_itx> maybe a .090" straight cutting edge so it can be sharpened and then maybe a 2 or 3 deg relief angle from there on back
[21:27:12] <Tom_itx> we used to make them for punching out aluminum aircraft parts
[21:27:16] <Tom_itx> non critical parts
[21:27:36] <Tom_itx> +-.030 from mylar drawings
[21:29:24] <Jymmm> might have to have it made
[21:29:48] <Tom_itx> won't be cheap but not that hard to make if you had a mill
[21:29:58] <Tom_itx> or even a lathe
[21:30:02] <Tom_itx> since it's round
[21:30:07] <Jymmm> Hell, I'd rather just buy the discs pre made
[21:30:16] <Tom_itx> may be cheaper
[21:30:37] <Tom_itx> somebody's gonna have to make tooling though
[21:31:11] <Jymmm> If Ido enough searching, I'll find it, but it'll take a while
[21:31:38] <Tom_itx> i worked at a place that stamped parts out like that too
[21:31:40] <Jymmm> oh fuck.... hang on
[21:31:48] <Tom_itx> up to maybe 8" discs
[21:32:03] <Tom_itx> maybe a bit bigger
[21:32:13] <Jymmm> found em
[21:32:15] <Tom_itx> but they were mild steel
[21:33:36] <Jymmm> Now, I'll have to see how much they'll cost me
[21:40:43] <r00t-Shed> im gonna cut something
[21:41:19] <alex4nder> like, your wrists?
[21:41:25] <alex4nder> or some material
[21:41:25] <Tom_itx> heh
[21:41:36] <r00t-Shed> toms neck
[21:41:43] <alex4nder> haha
[21:47:04] <r00t-Shed> http://i.imgur.com/fnxuQ.png
[21:50:57] <r00t-Shed> a big fat clock
[22:02:01] <andypugh> Unless that is m or ' that's quite a small clock
[22:32:59] <geo01005droid> http://www.youtube.com/watch?v=DIiWoGUPP78
[22:33:16] <geo01005droid> Piezoelectric touch probe
[22:36:24] <andypugh> That is a very simple idea.
[22:37:30] <andypugh> The probing routine could be optimised though
[22:37:42] <geo01005droid> I saw something similar on the web the other night so I made it today.
[22:38:08] <andypugh> (by "simple" I mean, "Why didn't I think of that?"
[22:38:55] <geo01005droid> I would love a optimized probe routine. Any body have a better probe routine?
[22:40:01] <andypugh> I think that only backing off 2mm or so from the last probed position would help.
[22:40:48] <geo01005droid> The routine I'm using is one of the examples that comes with linuxcnc
[22:41:06] <geo01005droid> Ian
[22:41:38] <geo01005droid> I have been trying to find a better probe routine.
[22:42:08] <andypugh> This is Linux, you have to hack :-)
[22:42:32] <Thetawaves> damn man, you've got some skills geo01005droid
[22:43:15] <archivist> have you started writing it yet!
[22:44:01] <geo01005droid> http://www.instructables.com/id/cheap-super-sensitive-digitizer-probe-for-cnc-/
[22:44:35] <geo01005droid> I have not started writing it yet.
[22:44:51] <r00t4rd3d> http://i.imgur.com/bG13p.jpg
[22:44:56] <r00t4rd3d> test cut, check
[22:45:06] <r00t4rd3d> my stain, so so
[22:45:11] <geo01005droid> Above is the example I saw. But it never shows it working.
[22:45:44] <tjb1> right over the knot...tsk..tsk..tsk
[22:46:04] <r00t4rd3d> "test cut"
[22:46:11] <r00t4rd3d> i made that face from an image
[22:47:07] <r00t4rd3d> http://fc01.deviantart.net/fs30/f/2008/102/a/4/Roman_Clock_by_a_lemonhead.png
[22:47:10] <r00t4rd3d> there
[22:47:26] <tjb1> face?
[22:47:41] <tjb1> oh… clock face
[22:47:58] <r00t4rd3d> did you just call me a clock face?
[22:48:10] <r00t4rd3d> you wanna fight me?
[22:48:46] <tjb1> yes
[22:49:09] <andypugh> Hmm, in theory with that sensor you could run a PID loop in piezo voltage and just trace a constant-force raster. No tedious up-down at all.
[22:50:32] <archivist> until you get a reversal of your contour
[22:52:03] <tjb1> Is there a way to set a message for someone on here that they will receive when they log on?
[22:52:24] <andypugh> I believe there is.
[22:52:34] <archivist> !later nick message
[22:53:17] <tjb1> replace the ! with / ?
[22:53:28] <Tom_itx> it would have to be done with a bot
[22:53:30] <Tom_itx> i don
[22:53:40] <Tom_itx> don't think freenode does it by itself
[22:54:24] <archivist> !later tjb1 here is your message
[22:54:24] <the_wench> will tell tjb1 when he/she joins next
[22:54:29] <tjb1> Nothin came up with that archivist, guess Ill keep checking back
[22:54:55] <andypugh> You would need to leave and come back
[22:55:03] <Tom_itx> the_wench bot may support it
[22:55:10] <geo01005> Well this device is piezo electric not piezo resistive, so it is dificult to track surface contact. Mostly good for detecting an impact.
[22:55:22] <tjb1> I was talking about when I entered the command, I did get a message from wench
[22:55:31] <tjb1> the_wench: will tell tjb1 when he/she joins next
[22:55:32] <andypugh> (the_wench is a dumb bot, I guess she looks for <name> joined
[22:55:50] <the_wench> tjb1: archivist said here is your message
[22:56:53] <andypugh> tjb1: PID to zero output might work.
[22:57:45] <geo01005> I would love to make a probe routine like this one:
[22:57:46] <geo01005> http://www.youtube.com/watch?v=IcVv1So1n_8
[22:59:04] <andypugh> Nothing there LinuxCNC can't do, in thoery.
[23:00:48] <geo01005_> Yes, just need to figure out how it works and duplicate it.
[23:01:05] <andypugh> It's just software :-)
[23:01:32] <geo01005_> I just hate doing something twice. If somebody has already done it, it would be a great addition to the example code with linuxcnc
[23:01:36] <Tom_itx> there are some probe examples
[23:03:05] <andypugh> One thing I think I see there is a switch to horizontal probing when the probe reaches a small distance above the previously defined datum.
[23:04:06] <archivist> and lift height related to previous probing height
[23:09:07] <Tom_itx> i think digitizing would be a painfully slow process
[23:11:02] <andypugh> The world has gone mad. Youtube video carving wood (largely with a knife) and he says the first requirement is safety glasses: http://www.youtube.com/watch?v=lZ9z5lc3gnw&feature=related&noredirect=1
[23:13:07] <archivist> and a glove! wimp
[23:13:25] <andypugh> The glove I can agree with.
[23:13:48] <andypugh> Blood will tend to stain the carving.
[23:14:05] <Thetawaves> lol
[23:14:44] <archivist> supposed to be carving the wood not teh finger
[23:14:53] <Thetawaves> :D
[23:15:01] <andypugh> If only you always had thay choice.
[23:16:15] <archivist> gloves would make my little stuff un holdable
[23:16:47] <andypugh> But do you carve it with a knife
[23:17:04] <archivist> scalpel
[23:17:24] <L84Supper> ehh.. kids today
[23:18:04] <Tom_itx> i wonder if those probe routines set up a bounding box at the beginning
[23:18:24] <andypugh> Ok, too late to finish this HAL file now. See you chaps again tomorrow.