#emc | Logs for 2010-04-12

[00:06:22] <SWPadnos> you need to redirect echo: echo <text to send> > /dev/ttyS0
[00:06:27] <cstop> boy, I can't get the syntax right, and the man page gives no clue
[00:06:42] <cstop> I'll try that !
[00:06:48] <SWPadnos> echo "this is what I want to send to the serial port" > /dev/ttyS0
[00:20:28] <cstop> returns echo IN;SP1;PU;PA800 900;PD;PA1400 1400;SP0; > /dev/ttyS0
[00:20:29] <cstop> IN
[00:20:29] <cstop> bash: SP1: command not found
[00:20:29] <cstop> bash: PU: command not found
[00:20:29] <cstop> bash: PA800: command not found
[00:20:32] <cstop> bash: PD: command not found
[00:20:34] <cstop> bash: PA1400: command not found
[00:20:36] <cstop> bash: SP0: command not found
[00:21:03] <atmega> notice his example had the string quoted
[00:23:12] <cstop> quotes needed in echo?
[00:25:39] <cstop> well, the quotes didn't seem to help....
[00:25:39] <pcw_home> Sure, if you have more than 1 string
[00:26:45] <cstop> the same string sent as a file from serial port terminal works fine
[00:28:10] <atmega> semi-colons are statement delimiters in bash
[00:28:35] <pcw_home> At least on the echo here the quote are needed because of the ;
[00:28:36] <pcw_home> you may als need the -n option so you dont send a newline
[00:29:13] <pcw_home> (if that might cause trouble)
[00:30:17] <pcw_home> try it without the redirection so you can see what its echoing
[00:30:39] <cstop> the worst is I've done this previously...just cant recall the method ;-(
[00:31:45] <cstop> echo SP2; /dev/ttyS0
[00:31:55] <cstop> I'll try that ;-)
[00:31:56] <skunkworks_> pcw_home: that is what I was thinking initially - driving the outsides of each centertapped coil and
[00:32:06] <skunkworks_> read out of each center tap.
[00:32:31] <skunkworks_> but there is no isolation that would be there on a normal resolver.
[00:32:37] <pcw_home> karpy:/users/amaya> echo "IN ; SP1 ; PU ; PA800 900 ; PD ; PA1400 1400 ; SP0 ;"
[00:32:39] <pcw_home> IN ; SP1 ; PU ; PA800 900 ; PD ; PA1400 1400 ; SP0 ;
[00:32:40] <pcw_home> works for me
[00:32:49] <skunkworks_> I would think you would have to de-couple it.
[00:34:33] <pcw_home> If it was driven symmetrically, the CT would be a ground referenced sense point (I think)
[00:35:40] <skunkworks_> hmm
[00:35:45] <skunkworks_> interesting
[00:38:22] <pcw_home> You could also drive it single ended, and make a virtual CT with 2 resistors, and use a differential amp between the virtual CT an the real one (a bridge circuit)
[01:35:12] <elmo40-topaz> w00t. picked up 3 small stepper and a cheapo HobbyCNC Pro board today. $80. Cant complain. I am thinking about modding a tiny lathe with them.
[01:36:10] <elmo40-topaz> i have a P4 computer. all i need is a power supply for the steppers.
[01:37:59] <MarkusBec> MarkusBec is now known as MarkusBec_away
[01:44:10] <cstop> In interest of the Serial port question (time stamp 20:33 and prev) It seems that the clocal setting had been reset to -clocal. I was trying some "share ware" a likely culprate!
[02:45:26] <cstop> elmo40 what voltage and current PS will you need?
[02:46:24] <elmo40-topaz> umm... up to 5A @ ~40V ?
[02:46:27] <elmo40-topaz> i suppose :P
[02:56:49] <elmo40-topaz> ok. found the specs of the board
[02:56:56] <elmo40-topaz> only 3A @ 42V
[02:57:01] <elmo40-topaz> max
[03:03:03] <cstop> Thats a small transformer, ru thinking of one of the torroids? I;m asking because I need about 60V and 10 or so amps (2 6amp drives) And just located a pair of 2:1 transformers that are capable of 8 amps output on 120V in.
[03:04:29] <cstop> I have a bridge Rectifier and a couple of BIG DC caps in inventory. It just might work ;-)
[03:08:42] <elmo40-topaz> * elmo40-topaz is confused.
[03:08:50] <elmo40-topaz> you selling them? or going to use them
[03:09:51] <elmo40-topaz> as for my requirements. i only have 3x 250oz.in. motors
[03:09:56] <elmo40-topaz> not much of a load there
[03:12:41] <cstop> Not selling anything, just a common interest, Highliting the differences ;-)
[03:16:34] <elmo40-topaz> i see.
[03:16:49] <elmo40-topaz> i want to convert a lathe. but will also need an encoder so i can do threading
[03:17:47] <elmo40-topaz> since i have 3 motors i was thinking of building a 'live tool' holder and perform cross drilling. will see how it all goes when i actually sit down and plan it ;)
[03:22:44] <cstop> An encoder is not difficult, even belt drive can work just fine, Or a slotted disk and an optical interupt
[03:23:14] <elmo40-topaz> ya, saw the one someone made.
[03:23:23] <elmo40-topaz> but there are two types. absolute and incremental
[03:25:06] <elmo40-topaz> a light passing a slot is what, incremental?
[03:26:10] <cstop> a single detector can give relative position, two detectors on a common wheel can give speed and direction
[03:26:27] <cstop> quadrature :-)
[03:27:14] <cstop> A third detection track can count full revs, Abs. Position can be derived.
[03:27:44] <cstop> A fixed turn ABS. encoder is not very handy ;-)
[03:29:42] <cstop> Sleep is getting me...
[03:36:03] <elmo40-topaz> http://www.autoq3d.com/ interesting app. More for drawing models then solids, though.
[07:54:43] <sealive> good morning from germany
[08:06:04] <alex_joni> schioen guten morgen
[08:16:56] <sealive> i'am serching for a plate UREOL 160x160x45mm
[09:18:08] <piasdom> g'mornin all
[10:54:29] <herron> bookmark
[10:54:38] <herron> logger_emc: bookmark
[10:54:38] <herron> Just this once .. here's the log: http://www.linuxcnc.org/irc/irc.freenode.net:6667/emc/2010-04-12.txt
[11:32:05] <MarkusBec_away> MarkusBec_away is now known as MarkusBec
[12:41:11] <ChanServ> [#emc] "This is the #emc channel - talk related to the Enhanced Machine Controller and general machining. Website: http://www.linuxcnc.org/, wiki at http://wiki.linuxcnc.org/"
[12:41:34] <morficmobile> awallin: Fanuc seems to publish peak
[12:41:51] <morficmobile> hence the needed confirmation :)
[12:45:06] <ChanServ> [#emc] "This is the #emc channel - talk related to the Enhanced Machine Controller and general machining. Website: http://www.linuxcnc.org/, wiki at http://wiki.linuxcnc.org/"
[12:47:52] <morficmobile> awallin: like on spindle they publish a 30 min rating of 26kW vs the 22kW of continuous rating (which we got off the data plate on spindle motor)
[12:49:04] <awallin> morficmobile: if you know the continous rpm which goes with the 22kW figure then you can calculate the torque
[12:51:34] <morficmobile> more interested in the servos at this point
[12:53:00] <morficmobile> the torque/rpm chart is on the same chart as the peak power
[12:54:35] <morficmobile> i mean it helps to know it's peak on the spindle
[12:54:45] <morficmobile> we have less info on servos
[12:55:55] <morficmobile> or don't trust Fanuc enough to say it's continuous, just like what every body else publishes is more like it
[13:03:56] <skunkworks> JT-Hardinge: floats get conveted to S32's in ladder
[13:26:46] <skunkworks> micges_work: sorry about your president.
[13:29:09] <skunkworks> wait - that makes is sound like I did it.
[13:31:28] <skunkworks> logger_emc: bookmark
[13:31:28] <skunkworks> Just this once .. here's the log: http://www.linuxcnc.org/irc/irc.freenode.net:6667/emc/2010-04-12.txt
[13:34:11] <skunkworks> JT-Hardinge: 2022%IFxx : Word memory xx (Float in pin) (converted to S32 in ClassicLadder)
[13:46:22] <skunkworks> http://electronicsam.com/images/KandT/conversion/packitin.JPG
[13:55:16] <skunkworks> JT-Work: 2022%IFxx : Word memory xx (Float in pin) (converted to S32 in ClassicLadder)
[13:59:58] <micges_work> skunkworks: thanks
[14:00:01] <micges_work> bbl
[14:07:46] <JT-Work> skunkworks: hi so floats are converted to s32 that makes sense
[14:08:04] <JT-Work> I'll update the manual if it is not spelled out
[14:12:19] <skunkworks> For some of my crazyness - I was going to scale the value in emc by 10000000 or so - do the math/compare in ladder - then scale it back down in emc/
[14:25:10] <awallin> latest cut-sim test: http://imagebin.ca/view/OkA9H-6.html
[14:32:31] <elmo40-topaz> awallin: a little rough, dont you think?
[14:34:00] <awallin> sure, but the rendering becomes very slow when I increase the resolution
[14:35:27] <elmo40-topaz> how slow? it is just a single line.
[14:36:17] <awallin> the calculation is reasonably fast
[14:36:29] <awallin> but it can take a minute for the render-window to show up
[14:36:35] <awallin> and it uses lots of memory
[14:36:44] <awallin> this is when drawing 50 000 cubes or something
[14:37:45] <morficmobile> With EMC, can i program a lathe spindle to be say fixed at 0deg, then 120deg, then 240 deg.?
[14:38:11] <awallin> if you have a servo on the spindle, and an encoder
[14:39:56] <frallzor> lo boys
[14:41:24] <morficmobile> awallin: then i need a servo spindle with 22kW and 2000RPM :) rather than just an AC motor with encoder
[14:42:05] <awallin> morficmobile: you will need the AC-drive to be able to work as a servo-drive
[14:42:15] <awallin> a modern VFD should do
[14:42:29] <awallin> EMC can drive it with a torque command, if it has a torque input
[14:44:37] <pcw_home> morficmobile: how is your current spindle driven? (it may be compatible with EMC)
[14:44:38] <morficmobile> the AC Motor is driven by a variable frequency drive
[14:44:55] <awallin> a.k.a. VFD
[14:45:28] <elmo40-topaz> problem solved ;)
[14:45:39] <morficmobile> pcw_home: still our Fanuc stuff we try to eliminate (yes reuse is an option, but what isneeded after the 1996 model Fanuc stuff dies), might be cheaper to axe the Fanuc stuff and know where to get replacements
[14:45:51] <pcw_home> if it doesn't have so weirdo Fanuc interface it should be useable
[14:45:59] <pcw_home> (some)
[14:48:04] <morficmobile> Fanuc documentation is a bit of a misnomer, if we ever had it, it's not available now, considering downtime is costly quick, you can afford new drives and servos easy, compared to hours of scoping out what is not working i think
[14:48:37] <morficmobile> pcw_home: i rather contact Mesa with good info in the new drives than investing everyone's time on *trying* to make what we have work
[14:50:51] <elmo40-topaz> then ship me all your old parts while you buy new ;)
[14:51:05] <renesis> urmom is:
[14:51:09] <renesis> new cnc parts.
[14:51:14] <pcw_home> Sure but if the existing VFD is analog in or ModBus or something else that EMC can drive theres not much advantage in getting a new drive
[14:52:51] <morficmobile> pcw_home: does "digital serial spindle drive" mean much to you? it's not having (much) info on the drive that makes it a gamble
[14:53:14] <morficmobile> a "should work" is not gonna cut it for my boss, that's all
[14:53:58] <JT-Work> skunkworks: I guess if the float in is converted to s32 in classicladder then using float in is not much use?
[14:54:01] <morficmobile> if i can figure out what we have with absolute certainty, i would love to keep the spindle drive, servos with drives are not that much
[14:54:09] <frallzor> hmm this modbus rtu stuff is hard
[14:55:09] <elmo40-topaz> morficmobile: what part of the world are you in?
[14:58:33] <morficmobile> elmo40-topaz: US
[14:59:28] <elmo40-topaz> excellent... now, my address is:
[14:59:30] <elmo40-topaz> :P
[14:59:34] <elmo40-topaz> send me what you dont use
[15:00:32] <pcw_home> No, "digital serial spindle drive" does have that weirdo sound to it, let me find that link to the drawings
[15:00:34] <pcw_home> Is the spindle drive made by Fanuc? If not maybe theres a better documentation source
[15:03:15] <elmo40-topaz> fanuc offers great documentation, if you are an authorized fanuc repair shop!
[15:04:48] <skunkworks> JT-Work: other than it does the conversion for you (instead of having to convert it in emc)
[15:05:19] <skunkworks> look at commanded spindle speed. - that is a float but for the most part - converting it to a s32 is just fine.
[15:13:25] <JT-Work_> JT-Work_ is now known as JT-Work
[15:18:38] <JT-Work> dang lost my connection for a bit
[15:19:02] <JT-Work> skunkworks: I guess the conversion is ok so long as you know that is happening
[15:23:57] <morficmobile> pcw_home: it is Fanuc made, spindle and servo drives and servos all have A06B-* Fanuc #s
[15:25:35] <sealive> hi to all
[15:31:13] <JT-Work> morficmobile: call Fanuc USA
[15:31:23] <pcw_home> OK its strange, (your doco page 78) all its has in encoder in and out and inexplicable H1 through H12
[15:31:31] <morficmobile> he is on it
[15:31:39] <morficmobile> JT-Work: ^
[15:36:45] <morficmobile> pcw_home: do you see why i am not confident in making what we have "simply work", i look at it and feel it's obfuscation
[15:37:56] <morficmobile> JT-Work: "he" being the designer who usually gets in contact with them, i call them if i don't see him on the phone any time soon
[15:38:37] <morficmobile> but i just load myself more and more this way....already inherited the calling Renishaw...
[15:39:17] <morficmobile> in the end, if i do not get answers i tend to "just get it done" instead of waiting though :/
[15:40:11] <morficmobile> what i see as problem, everyone in here is trying their best to help, and i can not provide decent information about what we HAVE, that's no good
[15:40:30] <elmo40-topaz> exactly.
[15:40:51] <elmo40-topaz> cant go to an auto shop saying 'fix my car' if they dont know the make/model to see what affects the car.
[15:41:00] <atmega> you can if you are female.
[15:41:03] <elmo40-topaz> knowing is half the battle :P
[15:41:04] <JT-Work> that's why he should call fanuc and supply the info you need if that is his job
[15:41:24] <elmo40-topaz> fanucs job is to sell you products. thats all
[15:42:01] <JT-Work> gotta get past the sales reps to the tech guys
[15:42:53] <morficmobile> he researched Camsoft who only said they can do everything we want with what we have
[15:43:05] <morficmobile> so this info is nw new
[15:43:15] <morficmobile> since he never needed it for Camsoft
[15:43:53] <morficmobile> power automation and soft servo said they can't work with it
[15:44:47] <JT-Work> so your in a tight spot between a couple of rocks I'm guessing
[15:44:49] <awallin> elmo40-topaz: here's a higher resolution version of the cutting-simulation http://imagebin.ca/view/8XvNFCJR.html
[15:45:42] <morficmobile> feels that way, so i feel i am best of pricing known working replacements, servo cost seems reasonable with drive, if we get peak vs continuous confirmed
[15:46:36] <morficmobile> this way i can ask pcw_home/mesa for a quote on i520+7i33+7i37 for one lathe then one mill (mill will need two daughter cards to move 4 axis+spindle servo)
[15:47:06] <morficmobile> for that iwant to show the drive/servo we would be getting
[15:47:18] <JT-Work> Mesa prices are on line
[15:47:46] <morficmobile> JT-Work: right, but a nod "yep, that's what yo need" would be good
[15:47:53] <morficmobile> you*
[15:48:16] <morficmobile> oops, 5i22* no 5i20 anyway
[15:48:22] <morficmobile> not*
[15:48:26] <JT-Work> without knowing what your drives need no one can tell you what Mesa cards you might need
[15:48:48] <JT-Work> for EMC2 a 5i20 is all you need
[15:49:03] <alex_joni> awallin: cool.. so what's still missing is throwing away not connected parts
[15:49:34] <morficmobile> JT-Work: right, but i am looking at AD drives
[15:50:52] <morficmobile> JT-Work: turn a unknown/uncertain spec into a known spec and know where to get replacements for the future
[15:51:16] <awallin> alex_joni: the basic low-level things are in place now I think. still can't generate a volume for a cutter that moves in both XY and Z...
[15:54:35] <JT-Work> the AD drives are easy which one are you looking at?
[15:54:41] <alex_joni> awallin: it'll get there, I'm sure
[15:55:29] <elmo40-topaz> awallin: how much longer did htat one take?
[15:56:17] <awallin> elmo40-topaz: I changed the way things are drawn. The low-level calculations are reasonably quick, now it seems the slow part is building the trees. The difference operation is reasonably quick
[15:56:19] <JT-Work> looks like they are "smart" drives
[15:57:15] <alex_joni> awallin: do you build a path of the tool, then do the intersection?
[15:57:42] <cnc4raffi> cnc4raffi is now known as notranc
[15:57:51] <morficmobile> JT-Work: SVM-230(B?) (not usre i need a break)
[15:57:59] <awallin> alex_joni: yes, you need to come up with a function isInside(p) which returns true if point p is inside the tool-swept-volume. we then build a tree of that and subtract the tree from the stock-tree
[15:58:17] <morficmobile> JT-Work: but i still need a call to fanuc, make sure it is a peak spec that is printed on the servos, not contiuous
[15:58:35] <morficmobile> JT-Work: "it seems it is peak" is not good enough
[15:58:49] <awallin> alex_joni: haha, now I changed the cutter diameter and it fails miserably again... slightly buggy I would say
[15:59:04] <JT-Work> for pricing I'd put every option on your ciphering
[15:59:49] <JT-Work> I see that it has a velocity input and uses an encoder as the speed reference and or position info
[15:59:58] <awallin> seems about 10-bit of linear resolution is enough for screen preview. that's reasonable since 10^2=1024 which is rougly the screen width
[16:00:19] <awallin> uh, 2^10 ...
[16:00:31] <elmo40-topaz> awallin: i have never used that app. it works well?
[16:01:26] <alex_joni> awallin: maybe yours
[16:01:29] <alex_joni> mine is 1920
[16:01:41] <alex_joni> and I'm sure we can find at least one in here with twice that ;)
[16:01:43] <morficmobile> JT-Work: and pcw_home and SWPadnos had already said that drive would be good for 5I22 and their daughter boards
[16:02:06] <morficmobile> JT-Work: would just need a source for spindle drive
[16:02:11] <awallin> alex_joni: so you need depth=11 trees...
[16:02:37] <awallin> elmo40-topaz: what app?
[16:02:45] <alex_joni> awallin: I don't usually run my apps fullscreen
[16:02:51] <alex_joni> so 10-bit is probably enough
[16:03:16] <elmo40-topaz> awallin: opencam
[16:03:25] <awallin> until you start zooming...
[16:04:05] <awallin> elmo40-topaz: opencamlib is my hobby programming-project for when I am tired of doing real work... or other hobbies
[16:04:12] <JT-Work> morficmobile: pcw told me that the additional size of the 5i22 could not be used by the program for EMC so it is of no benefit to use a 5i22 with EMC AFAIK
[16:04:30] <morficmobile> JT-Work: it was a 4 connector decision
[16:04:58] <morficmobile> or did you mean it can't use the extra I/O?
[16:05:31] <morficmobile> i didn't want it for the larger fpga, since their software is not supported by emc
[16:11:00] <JT-Work> I was thinking only of the fpga
[16:11:45] <elmo40-topaz> awallin: it seems 'old', OpenCAM
[16:11:51] <elmo40-topaz> no more development ?
[16:11:58] <morficmobile> yeah fpga size won't help me now, just the 4th connector is tempting
[16:12:14] <pcw_home> morficmobile: You can use all the I/O, but for a lathe control the FPGA config will be about 18% full
[16:12:28] <sealive> is it posible to get a g-code out of a stl?
[16:13:16] <morficmobile> pcw_home: well, the 4th connector is only reason i look at it, to make sure i don't run out of IO
[16:13:32] <JT-Work> pcw_home: are there bit files for the 5i22? I don't see any mention in the EMC docs
[16:13:57] <morficmobile> sealive: cam software can use it to create 2D/3D tool paths, not sure what open CAM packages there are
[16:14:06] <JT-Work> I see it now but not where I expected it to be :/
[16:14:37] <pcw_home> Yes, I think there are ones for all of our FPGA cards even the 3X20 (PCIE)
[16:14:57] <JT-Work> I need to update that
[16:18:54] <alex_joni> http://git.linuxcnc.org/gitweb?p=hostmot2-firmware.git;a=tree
[16:19:20] <alex_joni> I don't see an 3x20 ucf there, but there is for all the others
[16:19:29] <pcw_home> The bitfile situation is awkward in some ways because there can be 1000s of them (its trivial to make a application specific one)
[16:20:40] <pcw_home> (theres no 3X20.ucf because the pinouts are 3X20 motherboard specific so theres a 7I68 .ucf for example)
[16:58:25] <pcw_home> bbl
[17:07:16] <EricKeller> in case anyone wanted to know what danimal-garage does: http://reviews.mtbr.com/blog/sdcbs-day-1more-photos-caletti-hbc-victoria-cycles-wolfhound/2/
[17:12:41] <JT-Work> cool
[17:18:01] <JT-Work> Titanium Spacely Sprockets are better than Cogswell Cogs for sure :0
[17:18:51] <JT-Work> he uses Squirrelcart I know for sure
[18:44:45] <frallzor> http://www.pici.se/p/aDtRmrFsH/ how about this for a next test? :)
[18:51:07] <skunkworks> frallzor: how is it going?
[18:53:07] <frallzor> not run that yet
[18:53:24] <frallzor> will keep it til installation of power is complete =)
[18:53:26] <frallzor> started today
[18:53:35] <frallzor> hopefully done on wednesday
[18:54:30] <skunkworks> cool
[18:56:16] <frallzor> cable is in place at least now =)
[19:06:39] <JT-Work> frallzor: nice
[19:20:00] <morficmobile> http://www.thirtyfivemillimeter.net/Model20S.pdf <-- do they really mean 22.5Nm continuous ? cause then i need a new place to shop at, AD's 3kW tops out at 14Nm
[19:20:25] <morficmobile> this is the sheet Fanuc faxed us on the Z Axis servo, the X Axis would be ok with the 3kW then
[19:20:44] <sealive> good evening
[19:21:05] <sealive> is it posible to get a g-code out of a stl?
[19:25:13] <micges> sealive: what do you mean?
[19:28:05] <frallzor> I did my latest model from a stl
[19:28:15] <frallzor> import it into a software that supports
[19:28:28] <sealive> witch do you use
[19:28:29] <EricKeller> mastercam will do it
[19:28:38] <frallzor> artcam too
[19:28:55] <sealive> proE does this not
[19:29:02] <morficmobile> SWPLinux: Fanuc saying this is "Rated torque at stall" and then showing 22Nm on the chart in the "continuous" section ruined my perfect Monday :)
[19:29:20] <EricKeller> sealive: proE should do it I think
[19:29:33] <EricKeller> if you have the right version
[19:29:35] <sealive> i think only NURBS system can do this
[19:29:42] <frallzor> artcam =)
[19:29:59] <sealive> is artcam open
[19:30:22] <frallzor> open?
[19:30:28] <frallzor> as open as proE
[19:30:42] <frallzor> in other words not, if you mean open source =)
[19:30:46] <morficmobile> Esprit, Surfcam, Mastercam should all be able to do it if you have paid for the option, although i mostly deal with Inventor .ipt files, using STL to help save time on stock simulation
[19:30:53] <sealive> ok thewn i will wait what Danheeks is going to say
[19:32:22] <skunkworks> doesn't freemill take stl files?
[19:33:22] <skunkworks> http://www.mecsoft.com/Mec/Products/FreeMill.shtml
[19:34:36] <skunkworks> it is free but closed and runs on Micro$oft
[19:36:34] <SWPLinux> sealive: http://tinyurl.com/y2cv5fd
[19:36:47] <SWPLinux> morficmobile: 22nm - that seems a little bit big :)
[19:37:02] <SWPLinux> and what was it - 34 kG?
[19:37:38] <Jymmm> SWPLinux: Where you be?
[19:37:51] <SWPLinux> Chicago, headed for Las Vegas
[19:38:00] <Jymmm> VIVA LOST WAGES!!!!
[19:38:07] <SWPLinux> indeedty
[19:38:09] <SWPLinux> -t
[19:38:22] <Jymmm> SWPLinux: CES ?
[19:38:27] <SWPLinux> NAB
[19:38:28] <morficmobile> SWPLinux: indeed, "at stall" is this a common term?
[19:38:41] <SWPLinux> yes, it means stall torque
[19:38:43] <sealive> thanks
[19:38:45] <morficmobile> SWPLinux: know a source for big boy servos?
[19:38:51] <SWPLinux> not really
[19:39:01] <andypugh> 22Nm sounds pretty big-boy to me
[19:39:11] <morficmobile> SWPLinux: stall torque does not want to go into my head as "contiuous"
[19:39:24] <SWPLinux> heh
[19:39:33] <morficmobile> stall to me is "Z-Axis Error"
[19:39:36] <Jymmm> SWPLinux: As a exhibator?
[19:39:46] <andypugh> What was the full spec? 22Nm continuous, something bigger peak?
[19:39:50] <Jymmm> SWPLinux: making contacts?
[19:40:32] <SWPLinux> I'm not an exhibitor, but I know a couple of them
[19:41:06] <Jymmm> SWPLinux: You changing venues?
[19:41:32] <SWPLinux> could be\
[19:41:36] <SWPLinux> -\
[19:41:40] <morficmobile> andypugh: http://www.thirtyfivemillimeter.net/Model20S.pdf something bigger peak
[19:41:52] <SWPLinux> bbias - gotta get more coffee
[19:41:56] <Jymmm> SWPLinux: Cool, hopefully you can make some good contacts
[19:41:58] <ds3> SWPLinux: when are you arriving here?
[19:42:09] <Jymmm> ds3: He's not.
[19:42:19] <ds3> Jymmm: he's skipping ESC this year?
[19:42:26] <Jymmm> ds3: Yep
[19:42:32] <ds3> oh
[19:42:47] <Jymmm> or would have already been here iirc
[19:42:53] <andypugh> What size leadscrews? If we guess at 25mm x 5mm pitch then that's 28 tons at the tool....
[19:42:55] <ds3> well, ESC is next week
[19:43:10] <Jymmm> ds3: you going?
[19:43:16] <ds3> Jymmm: probally
[19:43:23] <Jymmm> ah
[19:43:28] <ds3> exhibits only, of course
[19:43:45] <morficmobile> andypugh: 50mm, no pitch confirmed yet, maintenance guy is gonna get it once he finishes up on the mill doing repairs
[19:43:47] <ds3> it'll be the first time in a few years that I am not working it
[19:43:57] <Jymmm> ds3: ah, heh
[19:44:10] <Jymmm> ds3: were you working it when we met?
[19:44:22] <morficmobile> andypugh: 6000lbs pounds feed thrust on Z Axis on some other spec i don't have scanned
[19:44:25] <andypugh> I believe that you generally only use the peak torque accellerating rapids. Which is by definition intermittent.
[19:44:31] <ds3> Jymmm: I think so... booth monkey that year
[19:44:36] <Jymmm> lol
[19:45:01] <ds3> then was a speaker last year... got into all the talks
[19:45:08] <SWPLinux> ESC is end of the month
[19:45:23] <ds3> SWPLinux: next week
[19:45:25] <Jymmm> SWPLinux: Das Boot?
[19:45:39] <sealive> meshcam and freemill is for windows and only 30days
[19:45:41] <SWPLinux> but my wife's vacation is the same week, so we're going on a cruise instead :)
[19:46:11] <skunkworks> freemill is free. no limit
[19:46:11] <ds3> hmmmm
[19:46:20] <SWPLinux> sealive: a lot of Windows software works very well under WINE
[19:46:23] <ds3> oops, it is not next week
[19:46:29] <morficmobile> andypugh: can not wrap head around "rated at stall", and it being considered contiuous
[19:46:41] <ds3> freemill used to be free
[19:46:42] <sealive> also under karmic?
[19:46:44] <SWPLinux> I've run SolidWorks Viewer recently, as well as Altium Designer (woohoo!)
[19:46:56] <SWPLinux> yes, on Karmic
[19:47:00] <ds3> Altium designer works fine under Wine?
[19:47:01] <SWPLinux> and Hardy
[19:47:04] <andypugh> I think stall is worst-case, so what they choose as their reference.
[19:47:11] <SWPLinux> ds3: not quite fine, but it's getting close
[19:47:19] <SWPLinux> stall is maximum
[19:47:20] <ds3> SWPLinux: at least usable?
[19:47:35] <SWPLinux> if you try to get more out of it, you can't run it continuously
[19:47:58] <SWPLinux> conversely, if you run max rated current into it, that's the torque you'll measure just as the motor stalls
[19:48:21] <andypugh> The graph sems to show that the motor will keep turning at 60Nm load, but if you hold it at more than 22Nm for too long it will get hot.
[19:48:54] <SWPLinux> ds3: yes, and strangely enough more usable in 3D mode than 2D mode, when you have graphics acceleration enabled
[19:49:01] <SWPLinux> andypugh: yes
[19:49:22] <ds3> SWPLinux: @$##!@!#@$!@$@@ you just make my life more complicated!!!!
[19:49:26] <SWPLinux> heh
[19:49:46] <ds3> it used to be Eagle - works in Linux...no need to think too much
[19:50:17] <ds3> SWPLinux: does Altium designer include their PSpice package in their $1500 deal?
[19:50:39] <andypugh> http://www.nookindustries.com/ball/BallGlossary.cfm#DrivingTorque
[19:51:02] <andypugh> Says T = 0.177 P * L
[19:51:11] <SWPLinux> ds3: I don't know.
[19:51:48] <SWPLinux> I think the schematic entry setup lets you enter and simulate schematics, but you can't lay out PCBs, or something like that
[19:52:08] <SWPLinux> you can also go monthly, for something like $150 or $200/mo as long as you need it
[19:52:17] <SWPLinux> for the full package, I believe
[19:52:26] <ds3> the last I looked PCB layout is possible on the 1500 deal
[19:53:00] <andypugh> So, 6000 lbs thrust, 4 tpi = 265 lb.in = 30Nm
[19:53:00] <SWPLinux> ok, could be
[19:53:10] <SWPLinux> I haven't looked, because I already own the full package
[19:53:16] <ds3> heh
[19:53:36] <SWPLinux> (they keep sending me deals for buying it, but what I want is a deal for paying the maintenance fee again)
[19:54:14] <andypugh> So, unless your ballscrew has a pitch greater than .25" and you intend to drive at full Z load all-day, every-day, that Servo will do fine.
[19:54:42] <morficmobile> SWPLinux: andypugh, so worst case is what AD puts in intermittent zone? andFanuc's max torque is me crashing the machine?
[19:55:15] <sealive> SWPLinux: do i need wine or wine1,2
[19:55:42] <ds3> hmmm the 1500 package is gone
[19:55:48] <sealive> there are more then 1 wine in karmic synaptic
[19:55:53] <andypugh> What it means is that you can work in the intermittent zone, err, intermittently. You will only overheat the motors if you crash the head into the work and keep it there for several minutes.
[19:56:25] <andypugh> How many tools do you have that can take 6000lbs force?
[19:56:40] <SWPLinux> sealive: I don't know for sure. I think the wine site has instructions on getting a later version
[19:56:47] <SWPLinux> you add a ppa to your sources, I believe
[19:56:55] <morficmobile> andypugh: "that servo" ? the 22Nm? the AD i would like is 14Nm contiuous
[19:57:01] <SWPLinux> (it wasn't available for Lucid, last I looked)
[19:57:03] <mozmck_work> sealive there's a ppa for wine to get the latest version
[19:57:25] <andypugh> Ah. What is the intermittent rating on the AD one?
[19:58:04] <SWPLinux> they showed a temp. rise limit and some torque curves
[19:58:09] <SWPLinux> oh, that's the Fanuc. nm
[19:58:37] <andypugh> In perspective, the 14Nm servo will still run 24 hours a day at 3000lbs cutting force. Image trying to lift a car tied to the saddle of a manual lathe....
[19:58:47] <morficmobile> http://www.automationdirect.com/static/specs/sureservolowmed.pdf SVM230B
[19:58:49] <morficmobile> 35Nm max
[19:59:20] <andypugh> So that will do over 6000lbs intermittently.
[19:59:21] <morficmobile> right 14Nm is all day long, not when the machine stops/alarms out
[19:59:27] <andypugh> Yes.
[20:00:02] <SWPLinux> the AD motor was pretty crappy I think
[20:00:18] <SWPLinux> it only had a 2.5-3x peak rating
[20:00:21] <SWPLinux> which is crap
[20:00:40] <SWPLinux> usually peak is 4-continuous
[20:00:42] <SWPLinux> err
[20:00:45] <SWPLinux> 4-6x
[20:00:49] <SWPLinux> stupid mousepar
[20:00:51] <SWPLinux> d
[20:00:51] <morficmobile> SWPLinux: you vote for another source than AD then?
[20:01:23] <SWPLinux> I don't know another source (unless those ones Dave911 linked to are better), but I think the AD may be undersized relative to what you have now
[20:01:27] <SWPLinux> it's a big motor, but still
[20:02:42] <morficmobile> teco at machmotion are weak
[20:02:44] <andypugh> The original motor had peak <3x continuous. I don't think you can necessarily read much into that.
[20:03:48] <andypugh> And I really do think that both are probably oversized for a lathe Z axis, the feed forces are not that huge, consider that manual lathes work just fine.
[20:04:33] <andypugh> Worst-case is probably pushing big drills. There must be tables somewhere of drilling forces?
[20:06:43] <SWPLinux> manual lathes aren't high speed production devices
[20:07:14] <andypugh> No, but I am just trying to get some feel for the forces involved in pushing a lathe tool through work.
[20:07:15] <ds3> I am sure the size of the whips and the pace of the drummer would have a large say on if the manul lathes are high speed production or not ;)
[20:07:21] <SWPLinux> heh
[20:07:23] <morficmobile> our biggest issue is pushing 2" or larger "DFT Drills" (inserted) in Cobalt
[20:07:40] <andypugh> Get a bigger motor.
[20:07:48] <andypugh> :-)
[20:08:09] <SWPLinux> that's the highest "static" force, but accel probably requires more torque
[20:08:25] <andypugh> Acttually, that is just a guess. You might want to ask the drill manufacturer what thrust force is needed.
[20:09:22] <sealive> SWPLinux: how do i use wine is there a docu
[20:09:36] <ds3> aren't drills driven with unlimited force; just the feed rate is controlled? i.e. as large of a motor as you can get w/o stalling
[20:09:52] <SWPLinux> http://www.winehq.org/
[20:10:21] <SWPLinux> ds3: you only need a certain amount of force to push a drill of a given size in a particular material
[20:10:40] <ds3> SWPLinux: but that's a material property
[20:10:47] <SWPLinux> (at a specific surface speed, with a particular coolant, coating, drill material ...)
[20:10:50] <SWPLinux> yes
[20:11:15] <morficmobile> kennametal has a spreadsheet to calculate it
[20:11:23] <SWPLinux> so if you're cutting foam with a 1" cutter, you only need so much force for a given feed, and a larger motor won't help
[20:11:27] <ds3> so should the controls be modeled on the theory that it can apply infinite force to maintain a given feed rate?
[20:11:29] <morficmobile> the numbers seem small, yet we stall if we trust that
[20:11:37] <SWPLinux> hmmm. maybe
[20:11:58] <andypugh> 6000lbs force will accellerate a 100kg lathe saddle quite nicely. Like up to 4000 ft/min in 1/10th of a second...
[20:12:01] <ds3> actually, it isn't the force but the rate of energy needed to effect removal at a given rate
[20:12:18] <ds3> I seem to recall the equations estimate the HP for a given volume of material removal
[20:12:27] <ds3> (at a given rate)
[20:12:54] <morficmobile> 20A@146V "at stall" is under 3kW which is what the SVM230B is rated for contiuous
[20:12:56] <andypugh> The main work is done by the spindle motor though, not the Z-axis drive.
[20:13:53] <ds3> I vague recall looking all this up after stalling a hogging 1" EM in a block of alum on a haas mini-mill with a 2HP spindle ;)
[20:14:00] <ds3> s/vague/vaguely/
[20:14:04] <andypugh> This at-stall rating _is_ continuous, unless I am miss-reading things.
[20:14:20] <SWPLinux> yes
[20:16:07] <morficmobile> then AD is out really
[20:16:53] <andypugh> Huh?
[20:17:15] <andypugh> Which is which here?
[20:17:41] <morficmobile> 22Nm is Fanuc, 14Nm is AD
[20:18:21] <andypugh> Going bigger than the original motor will clearly be safer, but the question has to be how often you have stalled the existing motors. If the answer is "never" then that is a different situation to if it is "every day, that is why we want new motors"
[20:20:01] <mozmck_work> I have a used servo drive with no motor if someone needs it...
[20:20:29] <andypugh> And I don't think you can necessarily look at electrical power. It seems likely that magnetics have moved on a bit since the Fanucs were made.
[20:20:48] <andypugh> mozmck: Resolver input?
[20:21:22] <mozmck_work> I don't know. picked it up at an auction cheap. I'll have to look at it when I get home.
[20:23:13] <andypugh> mozmck_work: DOn't look too hard, I think I am several thousand miles and an ocean away
[20:23:39] <morficmobile> andypugh: we want new motors due to lack of wiring info/true specs/expensive to replace
[20:25:05] <andypugh> Have you asked the AD salesfolk for their input? They certainly know a lot more than me about lathe duty-cycles. (as I am just making stuff up from basic physics)
[20:29:50] <sealive> SWPLinux: there are no postprocessor in the freemill !
[20:30:09] <sealive> do i need visualmill as well
[20:30:17] <SWPLinux> no idea :)
[20:30:53] <sealive> dont you use freemill
[20:32:27] <SWPLinux> no, I don't
[20:32:51] <tom3p> are there notes on how to install a RIP to a machine without internet access? ( like from a thumb drive loaded up while at an inet cafe? )
[20:32:54] <SWPLinux> I have a couple of Windows programs that I have used to generate G-code, both purchased
[20:33:23] <SWPLinux> one is CadMAX, a solid modeling CAD program. the other is STLWorks, an STL to G-code processor
[20:39:40] <tom3p> it looks like copying the RIP dir from machine A to machine B will 'work', whats the drawbacks? http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Git section 9.3
[20:40:19] <ds3> you do a lot with STLworks?
[20:43:08] <SWPLinux> no
[20:43:36] <SWPLinux> I don't have much use for those tools since I haven't actually converted either of my machines to CNC yet :)
[20:43:48] <ds3> Oh
[20:57:13] <morficmobile> fascinating, Fanuc's intermittent max torque is just under 40Nm, droppin goff sharp at 1500rpm, like off a cliff sharp
[20:57:43] <morficmobile> looking at the graph, ignoring their Max. Torque in table underneath
[20:58:13] <morficmobile> that is closer to the 35Nm of the AD servo at intermittent, going to see what reply i get from AD
[21:01:51] <morficmobile> AD stays steady across 2000rpm
[21:07:05] <skunkworks> so - if I was measuring the position of a device every 250 times a second... how would that effect the servo period.. And if I sampled it at 1000 times a second - would that be good enough?
[21:07:22] <skunkworks> for a 1ms servo period.
[21:07:36] <skunkworks> * skunkworks is just thinking out loud
[21:08:50] <SWPLinux> 4x oversampling sounds like it should be enough
[21:09:14] <tom3p> at least 2x sampling ( 500/sec is barely ok , 1000/sec is ok ) are you just using the last sample or averaging them?
[21:09:23] <skunkworks> so I should be sampling postion 4000 times a second..
[21:09:48] <SWPLinux> well, you said you want to sample 250 times a second, didn't you?
[21:09:57] <SWPLinux> or did you?
[21:10:05] <skunkworks> I know I can sample at 250times a second..
[21:10:25] <skunkworks> I was wondering if that would be good enough for a 1ms servo thread.
[21:10:32] <SWPLinux> um. maybe you need to think out loud more clearly :)
[21:10:36] <skunkworks> heh
[21:12:15] <skunkworks> I know the heads will take 250hz.. but I don't know how much higher in frequency they will take... (and if the work) ;)
[21:13:12] <SWPLinux> ah
[21:13:30] <SWPLinux> you won't want to generate the stimulus in the servo thread, I imagine
[21:16:04] <skunkworks> 'I think' the way it worked is - the main clock in the machine was 250khz. They divided that down to 250hz. that was fed into the scales - the output was wave shaped and is the postion withing the .1 pin. they must have then used a freqency counter to figure out the phase differenc between the 250hz exciter and the resultant phase shifted output. and low and behold 250000/250 is 1000 which is what they divided each pin into.
[21:16:46] <SWPLinux> interestig
[21:16:48] <SWPLinux> um
[21:16:49] <SWPLinux> interesting
[21:18:23] <skunkworks> (if that made sense_
[21:19:00] <SWPLinux> more or less
[21:19:12] <skunkworks> freqency counter > counter.
[21:20:17] <skunkworks> I could see them triggering on the rising 250hz exciter - then counting until the rising edge of the postion signal returned.
[21:21:17] <skunkworks> I am sure they used some elegant solution though..
[21:21:43] <SWPLinux> sure, but that doesn't mean you have to! :)
[21:22:12] <skunkworks> I am sure I won't ;)
[21:36:41] <GonMD> so it seems that 5axis milling is what all the cool kids are doing
[21:50:19] <SWPLinux_> SWPLinux_ is now known as SWPLinux
[21:50:43] <SWPLinux> see you all later
[21:52:47] <alex_joni> SWPadnos: safe trip
[22:30:12] <Jymmm> Has anyone ever bought a US Savings Bond?
[22:30:34] <ds3> which one?
[22:30:39] <Jymmm> any
[22:30:56] <ds3> what do you want to know?
[22:31:10] <Jymmm> did you buy one or not?
[22:31:18] <ds3> a long long time ago
[22:31:23] <Jymmm> why?
[22:31:38] <ds3> i wanted one
[22:31:48] <Jymmm> no particular reason?
[22:32:05] <ds3> not really
[22:32:16] <Jymmm> How much is it worth now?
[22:32:34] <ds3> close to face value I think
[22:32:36] <Jymmm> http://www.savingsbonds.com/
[22:32:39] <Jymmm> Really?
[22:32:50] <Jymmm> how long is "long time ago" ?
[22:32:52] <ds3> it has been almost 10 years!
[22:33:19] <Jymmm> ds3: check out that link for it's current value
[22:34:07] <ds3> something is not right
[22:34:22] <Jymmm> ?
[22:34:54] <ds3> if memory serves, the bond is suppose to reach face value in 10 years but the site is giving me a maturity of around 203x
[22:35:03] <ds3> I need to dig up the paperwork
[22:35:33] <Jymmm> Well, did oyu put in the current year you got it?
[22:35:39] <Jymmm> correct year
[22:35:50] <ds3> I believe so... I got either in 2001 or 2002
[22:36:15] <Jymmm> E EE I ?
[22:36:56] <ds3> should be a EE
[22:37:15] <Jymmm> face value?
[22:37:21] <ds3> either 50 or 100
[22:38:33] <Jymmm> Congrats, you've made $11.84 in 9 years
[22:38:55] <ds3> this is a good reminder to dig out the paperwork to see what's going on with it; I thought the deal was a guarantee rate in 10 years and then it'll earn more for a few more years
[22:39:18] <pfred1> beats losing money
[22:39:45] <Jymmm> I guess it's 30 years max.
[22:40:12] <ds3> I know they changed the rules sometimes afterwards
[22:40:26] <Jymmm> pfred1: But $100 intested in other ways might make more than ~$1.10/year
[22:40:34] <Jymmm> invested
[22:40:48] <ds3> unless it is merely an interest bearing checking account ;)
[22:40:53] <pfred1> tell it to a teabagger :)
[22:41:00] <Jymmm> O_o
[22:41:24] <ds3> keep in mind...it is ($1.10/year)/(your tax rate)
[22:41:32] <ds3> state tax rate I mean
[22:41:51] <Jymmm> ds3: Yeah, CD's seem to earn higher (or were)
[22:42:06] <ds3> Jymmm: CDs are taxed by the state; US Savings bonds are not
[22:42:24] <pfred1> ok these capacitors are reformed
[22:42:32] <Jymmm> ds3: Bond interest is fed taxed
[22:42:35] <ds3> and depending on who sold the CD, it would have been riskier
[22:42:55] <ds3> Jymmm: yep
[22:43:32] <ds3> Jymmm: why the interest?
[22:44:04] <Jymmm> ds3: Finishing doing taxes, and they gave me the option to buy US Savings Bonds
[22:44:25] <ds3> Jymmm: under the new rules, EE bonds aren't that good of a deal
[22:44:42] <Jymmm> ds3: These are I (eye) Bonds
[22:44:47] <ds3> the other thing was, at that time, they took credit cards for purchasing them
[22:45:18] <Jymmm> ds3: They are using a portion of my refund to purchase it
[22:45:27] <ds3> the I bonds don't look that bad...it is $5/year for I bond returns
[22:45:31] <ds3> almost $5
[22:45:55] <ds3> but then buying a fine hardinge might be a better return ;)
[22:46:03] <Jymmm> lol
[22:46:27] <pfred1> when I buy beer i get 5 cents back on every bottle
[22:47:00] <ds3> I think for all the savings bonds, you loose the gains on it if you cash out early
[22:47:08] <Jymmm> but you pay an extra $0.10
[22:47:37] <Jymmm> ds3: It wasn't the early cash out , as much as ROI
[22:47:57] <ds3> Jymmm: you have faith in your employment?
[22:48:23] <Jymmm> There is no such thing as Job security
[22:48:40] <ds3> then your value for liquidity can be 0
[22:48:47] <pfred1> I have faith in this pair of capacitors i just reformed
[22:49:04] <ds3> pfred1: what's the caps for?
[22:49:16] <pfred1> a motor driver I am prototyping
[22:49:28] <ds3> motor driver? as in stepper or?
[22:49:36] <pfred1> yes a stepper driver
[22:50:42] <pfred1> I'm trying to use a Toshiba TB6560AHQ
[22:52:41] <pfred1> http://www.toshiba-components.com/motorcontrol/pdfs/TB6560AHQ_AFG_E_2003_20080407.pdf
[22:52:59] <pfred1> PWM Chopper-Type Bipolar Driver IC for Stepping Motor Control
[23:06:14] <ds3> oops 'can be 0' should be 'can't be 0'
[23:18:39] <pfred1> this is sort of like homemade ESR capacitors
[23:26:30] <andypugh> Well, this Arduino is a lot of fun, but looks like it is a bit too feeble for the job. (I was expecting rather too much, I admit)
[23:27:34] <andypugh> Though I might try some optimisations.
[23:29:20] <pfred1> andypugh thats an AVR microcontroller isn't it?
[23:29:33] <andypugh> Aye, that it be.
[23:29:46] <pfred1> I've read about those things
[23:30:05] <andypugh> It's a really friendly system. I can see all manner of possibilities.
[23:31:36] <andypugh> I started with this tutorial that assumes nothing (which is handy, because I know nothing) http://www.ladyada.net/learn/arduino/
[23:31:58] <pfred1> I should hook a microcontroller up to this stepper driver IC but I've read other people have ignored the start up sequence and it works OK for them so I'm going to try that first
[23:34:12] <atmega> what were you expecting from the arduino (that it seems too feeble)?
[23:34:48] <andypugh> 5kHz sine wave with simultaneous analog sampling.
[23:35:18] <atmega> hmmm... I would have said that was doable (without actually doing any numbers)
[23:35:36] <andypugh> I need to get the analog aquisition faster, there is a free-running mode I need to figure out. And 64uS is too slow for my arctan too.
[23:35:45] <pfred1> can't you get those in different clocks?
[23:36:37] <andypugh> I can get a 25kHz sine wave, until I put that analog sampling in.
[23:37:16] <andypugh> (Well, I call it a sine wave, an R-2R ladder works badly when R = 10k and 2R = 22k
[23:40:52] <atmega> did you tweak the ADC clock any?
[23:41:05] <andypugh> Not yet. It all looks a bit technical.
[23:41:44] <andypugh> I need to look into that, and dropping to 8 bits possibly too.
[23:42:17] <andypugh> Do you know any clear, concise and patronising references on that subject?
[23:43:03] <atmega> the avr side is at http://www.atmel.com/dyn/resources/prod_documents/DOC2559.PDF
[23:43:29] <atmega> the way arduino/wiring is mapped on top of the avr is made for general case simplicity though
[23:44:16] <atmega> http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1208715493/11
[23:44:25] <atmega> try that one, has sample code also
[23:44:57] <atmega> For optimum performance, the ADC clock should not exceed 200 kHz. However, frequencies up to 1 MHz do not reduce the ADC resolution significantly.
[23:46:13] <atmega> digital lines only take one clock so you can use one for a scope line to see what your (almost) real timing is.
[23:47:20] <andypugh> I have been Serial.print-ing the micros() function. The clock bit is probably more accurate.
[23:48:25] <atmega> you can bump the default serial speed way up
[23:48:52] <andypugh> yes, you see I look at " sbi(ADCSRA,ADPS2) " and it means nothing at all to me.
[23:49:36] <andypugh> And the serial speed is already as high as it goes. But then it doesn't matter how long the numbers take to get to me, once they have been calculated
[23:49:50] <atmega> it's just a macro to set bits in the control register
[23:53:29] <andypugh> Ah, OK. I had scanned past what looked like comments (too much reading HAL files ) :-)
[23:57:32] <MarkusBec> MarkusBec is now known as MarkusBec_away