Dave911, is this 32 or 64 bits? To add the isolcpus to grub add it into the /det/defaults/grub file
sudo make firmware && sudo make firmware_install &&
sudo make headers_check && sudo make headers_install
I've never done any of that
clytle374: 32 bits.. From what I have read there is no advantage to going to 64 bits for things like motion control....
Dave911, just wondering. I never got 64 bits to work
I am not convinced there is any point going over 16 bits for motion control.
also the update-grub command will detect your new kernel and add it automagically
andypugh Linux runs on 16 bits?
(Though it is nice that a double can count axis revolutions for days on end without losing precision)
I never tried .. but from what I heard going to 64 bits actually slowed down the response time with no advantages ... I think that in the newer PC cpus everything pretty much starts at 32 bits now.
Don't most 32 bit cpus use 64bit numbers okay anyway?
The Web of 1000 lies hints that there is an 8-bit Z80 linux build...
clytle374 I think the supposed advantage to 64 bit systems is wider busses
And memory address space. but was responding to the axis counting.
andypugh there is embedded Linux ports
Ah, hang on. 68020 is 32 bit.
andypugh sounds risc-y to me
sonds like a Apple IIe to me
maybe Mac Classic
Jymmm maybe fishbowl or doorstop?
pfred1: If it's color, nah. there are some cool games for it.
There's a fun thing I found out from Wikipedia. 95% of the cellphones in the word run on a core designed by the BBC Micro / Amiga folks.
doubles as a desktop heater too
ie by a small company of geeks in Cambridge (UK)
I JUST got a Mac G4 and 17" Studio Display LCD (for free). The LCD uses ADC which suppllies power to it via the video card - bastards!
It saves on wires
connector looks like 13W3
And looks neat
I _might_ have some adaptors
andypugh: ADC to DVI ???
Give me a minute
andypugh: Ok, I'll hold off the demolition crew then =)
ries_ is now known as ries
No, sorry, I must have given it away when I sold the G4 cube
andypugh: It's all good. Thank you anyway =)
I guess the Mac and Display work together?
It says it uses 24vdc, maybe I can break it out.
Yeah, it appears so. The HDD crashed in it.
Is it possible in principle to build EMC on PowerPC?
I suspect it's just glorified DVI (as far as signalling)
andypugh: Good question. Less paraport =)
Though, I do have a PCI dual paraport card
PCI Parport should work
I just installed a dual PCI pport card... can stepconf do the config or do I have to do it by hand?
Stepconf is multi-card aware on the latest versions, I belive
andypugh: Now to find ubuntu PPC =)
it lets you enter port addresses, but I didn't see anything to use the pins
is emc2 x86 specific?
andypugh: I want to see the latency if nothing else.
RTAI might be
I got a heavy duty 5 drawer filing cabinet today too. find a nice spot for it, should hold tools nicely.
and get rid of these plastic drawers that just get in the way of everything
atmega: It seems you are right, but at least is sets up the HAL and INI to suit, creates the pins in HAL etc. The rest is just fiddling.
atmega: If you need extra P-ports then you are into a realm of complexity that Stepconf doesn't really cover anyway. At that point you probably want to start editing the HAL and INI files to get the results you need anyway.
I thought I wanted separate limit/home switches, but I'm not sure I care anymore
Once you get the hang of it the possibilities and flexibility of the HAL file is such that you start avoiding Stepconf anyway
andypugh you can edit a stepconf generated conf file though right?
why the IN/OUT parameters?
andypugh so its a good start
I assumed you could put what you wanted in the custom.hal so stepconf could still deal with the other one
You can configure a P-port to be mainly Input or mainly Output.
So that option in Stepconf sets the ports up that way for you
what's the point of 'mainly'?
Some pins are always inputs, and some are always outputs.
atmega point is parallel ports are only so configurable
That;s the P-Port spec
yes - you just can't go back... (any manual changes you make to the hal/ini files will be wiped out if you re-run stepconf)
can't you tristate pretty much all the lines?
you can switch the data bus direction though
Give me a moment. I will find the docs
skunkworks can't copy file to a new filename?
[01:16:11] <andypugh> http://www.linuxcnc.org/docview/html/hal_drivers.html
That option in Stepconf simply sets up the extra ports in one of the two ways.
andypugh switches the data bus direction right?
ahh... I see.
atmega what kind of P-Port cards did you get?
a Rosewill and a I/O Future ($11 and $12 from newegg)
almost identical moschip, looks like a reference design
atmega they're both the same?
98.3% the same
When stepconf has finished, have a look at the .HAL file it creates. It defines a mapping between the physical pins and the signals into and out of EMC. It is part of the power of EMC. HAL stands for "Hardware Abstraction Layer" and it lets you rewire everything in software. Any physical input or output can be connected to any software input or output. So as you change your system and your requirements you don't have to chan
one has a cap in a different place
andypugh that HAL name worries me i saw a movie once with a HAL 9000 in it ....
atmega heh that's pretty funny they're so identical
same chip, same unpopulated spot for uart
ah for the serial parallel board?
they're twin P-Port cards?
these are twin pport... spots for two serial ports though
Also, there are all sorts of modules that can process those signals in HAL, for example Stepgen converts numeric values into stepper motor pulses, and Encoder converts quadrature pulses into numeric values. Add in basic logic and maths, and you can do nearly anything. (In fact I think it is Turing-Complete so you can do literally anything)
atmega and they have the netmos 9026 ICs?
this one is a 9815
Hmm, do I have £2500 for a Denford Triac, and more to the point, should I?
addf parport.1.read base-thread
addf parport.1.write base-thread
01:02.0 Communication controller: NetMos Technology PCI 9815 Multi-I/O Controller (rev 01)
atmega which both?
atmega cool thanks I need to order some up over here
the rosewill one is a prettier board :)
atmega K I'll get that one then
atmega I'm making my own BOB and I'm a little leary about just plugging it into a system for the first time you know?
so, I hate screwing around with pports... anybody make a breakout board that can source?
atmega I do: http://img191.imageshack.us/img191/4185/ppbbpic1.jpg
pfred: no big deal... just plug it in someone elses computer first.
atmega I probably will build up a clunker just to test it out on
you got that whole diode thing going on the 5v though :)
atmega: If it's a PCI parallel port, what's the worry?
I'm not worried about mine, he is.
I'd hook this SSR directly to the port, except that it leaks enough current to make the spindle motor annoying
andypugh I'm not too comfortable with hooking my unproven BOB up to even a PCI port on a system I care about with my luck I'd blow it all up anyways
At the risk of sounding evangelistic, if you can find the $75 for the Mesa 7i43 card (connects to the P-Port, gives you 48 IO lines and does all the stepgen/pwmgen/watchdog stuff on the card, then you might as well do so sooner rather than later). Or the PCI slot version which has even more IO.
andypugh too rich for my blood
is the IO still ttl?
pfred1: Before you plug it in, connect it pin-at-a-time through a multimeter on the milliamps setting and check that nothing draws more than 15mA or so.
andypugh yes I will bench test the circuit before I hook it to any PC
atmega: My SSRs are driven semi-direct, there is a ULN2003 in the middle
andypugh the breadboarded lash up drew microamps on the inputs
andy: do they leak when off?
ULN2003 converts logic-high to 500mA switch-to-ground. There are 7 lines per chip, though the 500mA is shared
I have not noticed any leakage
andypugh 500 ma is package limit but each segment can sink that too?
thats just crazy!
pfred1: That is my understanding. And depending on duty cycle you can parallel them. I have known people run steppers at 1A with a single ULN hooked direct to the P-Port
atmega: I am not sure. I think it came from eBay.
andypugh yeah last weekend lots of people dove into the ocean here too doesn't mean i dug out my bathing suit though
heh... I should have gotten the mesa instead of the 2 pport cards
atmega: Yes. I also have an unused dual P-Port card. I resisted foolishly
andypugh does this make any sense my steppers are rated for 2 amps but they seem to run best if i current limit them to 1 amp
I have a little PLC I could hook up for powered stuf
No, that makes no sense
yeah i never saw it coming myself
is that best loaded or unloaded?
they run much better at a very narrow current limit
like I'm trimming a 15 turn 200 ohm to adjust it
and at that you have to be within an eigth of a turn for the sweet spot
one i made
looks like this: http://img683.imageshack.us/img683/6498/stepproto1.jpg
its an SLA7026M PWM chopper
[01:47:00] <andypugh> http://www.geckodrive.com/upload/Step_motor_basics.pdf
adjusting the current may limit that I suppose
for $5 a driver I can't complain
no, I'm going cave diving for 3 days then the keys
Just a guess, it sounds like something wierdly non-linear
Where are you cave diving?
only key worth squat is key west
Turn up volume... http://v5.tinypic.com/player.swf?file=17vbid
and when i go I stay dry :)
Much nicer than, say, Swildons Hole
JT-Hardinge: you need to see that ^^^^^^^^^^^^^^^
well dry as in I don't go in the ocean
andypugh: haven't heard of that one.
I am a keen caver, but not a diver.
I am a keen drinker and have been known to dive on occasion ....
well, neither are most of the brit cave divers I've seen :)
not really true though, they are pretty hard core, and crazy.
They need to me.
(need to be, I mean)
[01:51:36] <andypugh> http://en.wikipedia.org/wiki/Swildon's_Hole
If you cave-dive in the UK you do it for the caving, not the diving. It's a means to an end, and a rather unpleasant one.
I met a welsh? guy over here diving in a bathing suit and I was chilly in my drysuit
andypugh there's an abandoned lead mine I saw people dive in
The Welsh are barely human.
Wasn't Martyn Farr was it? He is pretty much legendary (and Welsh)
[01:54:55] <andypugh> http://www.divemagazine.co.uk/news/article.asp?UAN=1347
I don't like going into my pool when the water gets much below 90F
no, duncan price
but, martyn farr is pretty well known here also... and martin robson
What is your worst diving experience?
I nearly died on my sixth cave dive. I was taking part in a project at Dan-yr-ogot, the National Showcave Centre in Wales. I had a single cylinder, a single regulator, a single bloody everything! I was about 30m in and about 10m down when the regulator decided to stop - on an exhalation. I panicked and breathed in water. I had an out-of-the-body experience and clearly remember being able to see myself calmly lying there on t
floor of the cave. There were standby divers at the surface and one of them came to try and find me, but I was wedged in a tight crack and having seen my light he assumed I was on my way out. A couple of minutes later he dived again, I saw him and just followed him out. It was a miracle - I had been breathing water for two minutes but I survived. I know it sounds impossible but there were 12 witnesses. The two standby guys n
(Martyn Farr quote)
andypugh yeah i nearly died once floating in my lounge chair and my beer ran out!
Duncan Price is not a name I know, but I deliberately avoided cave diving when I was doing semi-serious cave exploration.
andypugh I went on a cave tour in some cave in pennsylvannia once
They are laser scanning caves now to survey them, I guess you could CNC-machine replicas. In fact that might be how they built the Lascaux show-caves, which are facsimilies of the real thing which are too sensitive to risk.
andypugh would suck if your cave broke
caving has pretty much stopped in the U.S. because all the bats are dying
Eric_K and that's bad for caving how?
cavers don't want the bats to be dead
Aye, we rather like bats.
I'm claustrophobic and a little scared of water. this cave diving talk is making me nervous.
it's not clear why they are dying and they are afraid that it's caused by human actions
no bats in my caves
Nor this cave (have you seen these pictures?)
[02:02:59] <andypugh> http://channel.nationalgeographic.com/series/naked-science/3569/Photos#tab-Photos/0
clytle374 yeah i have two trees that shade my pool and I keep wanting to chainsaw one of them down here
my mother makes caving clothing, business is way off
Eric_K why would you need to be clothed in a cave?
so you don't get hypothermic
Eric: in .us?
They are about as warm as a refrigerator (In the UK). Great as long as you are active, deadly if you can't be.
lots of mud in caves
Eric_K i watched thie fascinating documentary about this cave in south america with these huge crystals in it but it was very hot and the atmosphere was poisonious too as i can recall
pfred1: That was my link up there
caves are at 56 degrees F, cold enough to kill you
andypugh thats right they broke into it mining
andypugh sorta puts my childhood crystal growing stuff to shame it did!
I mean those crystals were huge!
they calculated how long it took them to grow and it was something like 4 and a half million years or some such
I think it made even the crystal experts rethink.
now thats a cave i could see going and checking out
my mother's cave outfits were used on a National Geo special a while back
Eric_K these people had to use hazard suits
and at that because of the temps they still could only stay for 10 minutes or so
I think that cave was 56C, not 56F
yeah it was lethal
must be geothermally heated
I worked a job once that was hotter
Pheonix AZ in the summer
nah we were demoing a building and they'd taken all the insulation off all the pipes
job got shut down in fact people were getting hurt left and right
A friend of mine did that, they preheat the hull, then the welders go in in shifts.
I saw one guy drop a metal clad piece of sheetrock on himself it ended his career
it was so hot lots of people just couldn't think in it
I can't think when if gets over 80F
we went in the next day and the contractor cut us all checks and said go home this job never happened
and he was one tough mother if I ever saw one
guy was pushing over block walls by hand
Anyway, it occurs to me that it is 2am on a work night.
Tue Mar 16 22:14:05 EDT 2010
GMT is the only time that matters.
we should really do away with daylight savings time here
The rest is just local convenience
I think we should do away with standard time
andypugh there is nothing convenient about our time!
I remember when I was a kid and the president was messing around with the time and we had to walk to school in the dark!
Here they are talking of keeping summer time all year round. That annoys me, if sunset and sunrise don't suit you, change when you do stuff, don't lie about the time of day.
year round daylight savings time, I loved it
pfft it was like 4:30 AM in reality that year
was back in 76 during the second energy crisis
Exactly. Noon is noon, it is well defined as half way between sunrise and sunset. Live with it. If you don't like kids going to school in the dark, start school later.
or maybe 77 I forget now somewheres around there
Sorry, this is one of my irrational bug-bears.
Time to sleep.
Eric_K we can do away with standard time but first we have to do away with trains
that was done when I was a kid
well then standard time is just an anachromism
I'm working on my pulley ratios right now. On a X2 mini-mill any sold recommendations for machining force needed?
I can get 150 oz-in at the .2 lead ballscrews easy enough.
Less would be easier.
clytle374 there's calculators for those things
There are lots of I did this or I did that. But really, not many how much force can a mini-mill handle
clytle374 enough to snap a 1" endmill likes ita made out of glass
clytle374 and don't ask me how I know that ;)
You mean fold the column over!
clytle374 flat out you have 265.07 poinds of force
I know what I got, I'm asking what I need.
I might be able to face mill with a 1" cutter.
I seem to use the most force when I hog pockets
How much does it take to hog pockets on your mini-mill?
probably not much I mean I hand crank it
I have a power feed too but i only use that for light cuts
like finish cuts
Are you using the stock 16tpi screws?
I guess whatever came with it
with the one revolution of backlash
Does it have dials?
on the handles? sure
I have an RF-32
the "heavy" round column bench mill
So not an X2 mini-mill, much bigger machine. Anyone?
[02:37:03] <pfred1> http://img641.imageshack.us/img641/8026/millpic.jpg
it mills sort of but its a better drill press
clytle374 what kid of material do you mill?
alumium, steel, a little stainless.
0.47 HP spindle
my machine can just barely handle milling steel well really it can't but if i go wasy it can do it
You need a smaller cutter then.
and its not the horsepower its just not heavy enough to dampen chatter
someday i have to pour the base full of concrete
It won't help much
I think my base is too springy
yeah the column is too narrow
but it being able to swing has been helpful
work envelope is pretty small on it
furthest I've ever milled on it continiously is 12 1/2 inches
it looks like it can do more but if it can I've never figured out how
but its a hell of a drill press i don't care what anyone says
again, I need to put a real number to force required. More ratio is much harder to get.
crank your table with a spring scale attached and gauge how hard you're turning the handle
compared to when you do a hand cut
it should give you a ball park figure to work with
I should have done that before I took it apart to make prints.
well you have to put it back together someday
you only need one axis I'd imagine
I had to take the table off mine the one nut fell off once
I've went to repair lots of machines where the lead nut was loose. Nothing else wrong.
then another time I had a gib jamb so i took that out it looked like they machined it by leaving it in the plant driveway for people to run over coming and going
I'd like to see a picture of that.
heh i sanded it a little before I tossed it back in
its a lot smoother now!
Is it flat now?
I don't know I don't think the X axis gib is too flat
this was the Y that was really bad for me
but he y Idon't care what anyone says its still a massive drill press
you lock them gibs down and it drills like nobodys business
but as a mill meh not really no
I see lots of stepper conversion on these. But they loose power when moving and when micro stepping.
Seems like I probably don't need to get to the 350oz-in that some use on the X2 because of that.
yeah I've seen conversions too but I'd have to dump so much into it to get it to work
Most complaints on forums is the low speed rapids with the smaller motors.
and like I said even by hand milling on it is marginal at best
honestly I've no call for a CNC metal mill
no use in fact
Yeah, and I'm sure it is much more rigid than mine. But cnc I can take smaller cuts.
And I know how to work a cnc.
hey I take pretty small cuts with my machine
like a tenth of an inch is pushing it
it ain't no Bridgeport thats for sure
its a beefy X Y table drill press though and for that alone I'm happy with it
I can turn on my spindle with axis but neither m3/m4 turn it on. Did I confuse something?
have you looked at 29.4 of the integrators manual?
nope, am I an integrator?
atmega are you trying to get emc2 to run a machine?
sounds like it
I see no 29.4, 29.x is servo stuff
atmega then you qualify
atmega, I'm not sure about the setup. Just a quick search of the manual got me there.
The section. or page 213
or search "m3"
you must have a different version than me.
Sorry, I'm looking a the devel version. Hold a second.
[03:17:25] <clytle374> http://www.linuxcnc.org/docview/html//examples_spindle.html#r1_3
and the next section
net spindle-cw => parport.0.pin-14-out
that isn't sufficient? (stepconf generated)
atmega, when you control the spindle with AXIS, do you do it by clicking the + and - speed buttons?
no, the [stop] button and CW arrow
in MDI (or a program), you need to set the spindle speed to some nonzero value as well
I think there was a bug report about having to set the spindle speed before issuing M3/M4
so S1000M3 would work, but M3S1000 wouldn't (or something - maybe the bug only hit if they were on separate lines)
cool.. g97s1 fixed it
SWPadnos its not a bug its a feature!
I think it *was* a feature, but it's been fixed ;)
hey Hank must have seen safway in action! http://www.safway.com/PDF/MITQuikDeck.pdf
it kind of almost seems featureful
now that I know, before it was just abug.
whoops wrong chanel
heh... the spindle on/off is pretty cool
SWPadnos: Turn up volume... http://v5.tinypic.com/player.swf?file=17vbid
atmega, what you had to give an S first?
I did G97 S1
atmega, interesting. In my world there was 2 different G-codes for that. Funny it defaults to neither.
Jymmm, God that's scary.
clytle374: Yeah no shit. *NOW* I know why MythBusters always use a shield.
clytle374: It's 2000 FRICKIN YARDS (round trip)
Jymmm, And I was a little freaked out when a 22LR came back and hit a bucket 10 feet from me on the porch. But that, that could cure me of my shooting hobby.
uh. I didn't see it hit anything downrange
no puff of smoke/dirt down there
clytle374: Nah, just have a 1" shield
SWPadnos: turn up the volume, you can HEAR it hit the plate down range
I shot at a tire once when I was younger, it cured me of shooting at random things when it whizzed back by my head
were the shooting at an engine block?
Turn the sound up; you can hear the bullet head back. This is a very, very lucky sportsman. This guy is shooting a 50 Cal . The target is a steel plate, 1000 yards away. You can hear the ping of the hit, and then the bullet comes back and hits the ground just in front of his position, then tumbles up hitting his earmuffs, knocking them off of his head. The footage is amazing. You can hear the bullet as it tumbles through the air on its cou
rse back toward the shooter. He's lucky it hit the dirt first. He is okay, and obviously very lucky. What a difference an inch makes.
I was looking for plate targets and 1" was iffy on .223, what size of plate return 50BFG?
of course 1000 yards slows it down a bit, but only a bit.
in hind sight 1" plate was iffy on the life span before deforming and becoming dangerous.
PCW_ is now known as PCW
krushia_ is now known as krushia]
krushia] is now known as krushia
Jymmm: any opinions on a web hosting company?
[05:46:19] <Jymmm> http://127.0.0.1/
would be rooted in about a minute
[05:46:56] <Jymmm> http://bluehost.com/
we put up a slightly outdated redhat box as a print server once, it was rooted in less than an hour
I think it made the IT guys ecstatic
they were playing with that box for days
"rooted" ? :)
the hacker had root access
ah ok =)
* pfred1 can't even root his own box
sudo passwd root
its still not the root account
and then it is the root account
su stands for switch user its still not a genuine login
su without an argument gets you the root account
but whatever I'm not goingot argue it
then you can cd ~ and you'll be in /root
su: Authentication failure
not my fault you can't type your password
OR IS IT?????
Eric_K same passwd worked fine for sudo -i
did you do the sudo passwd root?
it doesn't matter, I've never needed to be root on an ubuntu system
my password is the only password on the system
Eric_K it helps if I want to edit a file outside of my home directory
ok, I believe you don't know how to root your own system :)
but if you really want to use the root account, you have to set a password for it
there is no root account on this system not a real one at any rate
it's an ubuntu system, correct?
true? in mdi , t7m6 should load the tool dia from tool table and AXIS should change from a cone to a cylinder .
i still see a cone
tom3p: you have more trouble with axis than anyone I know
tom3p I've never seen axis display anything but a cone in all the screeners of it I've ever seen
I think they check your account name and run special code
really eric, maybe you can tell me the answer
tom3p I always figured you were supposed to use your imagination as far as tooling went and the UI
no, I can't even get it to run, makes life easier :)
manual 18.104.22.168 " When a tool is loaded (for instance, with the MDI command T1M6), the cone changes to a cylinder which shows the diameter of the tool given in the tool table file."
tom3p well there's your problem
tom3p al lthe tools in your tool table file are obviously cones!
cute, it has a diameter
so it does change?
true? in mdi , t7m6 should load the tool dia from tool table and AXIS should change from a cone to a cylinder .
<tom3p> i still see a cone
tom3p are you sure you are using that tool table file?
tom3p maybe lsof | grep -i axis could help?
Eric_K it'd only tell you what files axis is using
sorry, being silly
the sudo passwd is not the same as root passwd
what is the .hal input for
'laser on/off' ?
would you use the same for spindle on/off?
what file do i edit to add a icon/button in axis ? i'm no programer and don't if it's a exe,txt,fishtank or a dodge
in Axis itself or for a pyvcp button on the side of Axis
alex_joni: can you spot the bad character in this message that makes it not show up? http://www.linuxcnc.org/component/option,com_kunena/Itemid,20/func,view/catid,9/id,2331/lang,english/
PCW_ is now known as PCW
I was looking for some math symbol or some other character LOL
backwards quote is a problem too
must be some kind of sql injection filter
JT-Dev is quoting mighty terms
came up with it on my own :)
i want to put a new icon/button. a home all button. i can't see it in axis and never used pyvcp
piasdom: you get an home all button when you define HOME_SEQUENCE in your ini file
check the manual for the exact name, or a sample config (sim/axis.ini for example)
Happy Birthday Dad!
* skunkworks checks to make sure the logger_emc is running.. ;)
happy birthday skunkworks's dad!!
He is probably working on the electrical box as we speak.
hey. it's my wife's birthday too
and she's headed to work as we speak :)
Happy birthday SWPadnos's wife!
[12:51:03] <skunkworks> http://tech.groups.yahoo.com/group/turbocnc/message/20048
is turbocnc an open group?
SWPadnos: happy bday to her too
hopefully you got her something nice
well, not yet ;)
I'd rather take advantage of her gone to work then
but I have planned a nice dinner with friends and family, then a concert
that counts as foreplay
but a gift is a gift
we haven't bought gifts for each other for the last few years. we have enough stuff, so we go for experience more now
[12:57:10] <alex_joni> http://www.diamondring.com/forums/showthread.php?t=108239
if only she liked diamonds ...
heh - isn't it great?
well.. there's silver, titanium, platinum, bone, crystal, leather
and quite a few other materials for jewelry
she loves bones! :)
or she seems to anyway. she has about 206 of them
she used to have a lot more....
do babies have a lot more bones than adults?
if the turbocnc author can't or doesn't want to work on it any more, I hope he makes it Free - it seems to have a following and it still seems useful where people have trouble finding modern computers.
[13:03:34] <alex_joni> http://www.antiquehelper.com/auctionimages/47947t.jpg
he pops up every so often saying - it is almost done...
I think you could get the source at some point, but it's not Free
Jymmm may knw
yes - (I actually bought the source) it was around $50
never did anything with it. I became emc aware soon after.
just slightly too late I guess
heh - the price of learning.
it's never too late
hmmm. I seem to have a repeating payment plan for learning
it's good for the economy.
for certain local economies, yes
depends on where the payment goes. i dont think turbocnc payment was 'local', was it?
it was local to someone
I was talking about making the software free-as-in-freedom. Otherise I think it will die when the author stops working on it.
yeah, I figured you meant Free rather than available to look at
yeah, when I type capital-F-Free I always mean that
that was the clue
good way to make a few bucks then look all 'special'. make a program, charge for it, have 1 or 2 updates, then quit working on it for 2 years and then open it up.
never used turbocnc, how is it?
it's for steppers, runs on dos, apparently stops motion at the end of every line of gcode before starting the next
it's very old and and can run on very old computers
I believe it also requires that the scale be the same on all axes, or your arcs/circles end up being elliptical
but that may have been fixed
MarkusBec is now known as MarkusBec_away
MarkusBec_away is now known as MarkusBec
Just this once .. here's the log: http://www.linuxcnc.org/irc/irc.freenode.net:6667/emc/2010-03-17.txt
danielfalck, same as the other daniel-* names? If you see this, there is a new classicladder example on the wiki for my lathe tool turret, which you had expressed some interest in seeing.
daniel falck is different
but also makes bike parts
I wish there was an easy way to add indexing to a standard QCTP
yaknow, short of taking your compound and drilling abunch of holes into it
course, I guess after CNC'ing a lathe you take the compound off.
leaving a nice spot for an indexer rig
(indexing the rotation of the toolpost that is)
And the position since most when you loosen the top nut the T nut is allowed to slide..
<clytle374> The web link to the .config file that I used is now hot on the wiki. I left the sound enabled in that config, and so far that has not caused any problems, but in hindsight I think I would remove it from the kernel compile or blacklist the drivers so it can't possibly interfere with EMC2
Do you guys have any clever ways to mount a drill motor of some type to a lathe tool post so I can drill into the face of my work piece? Hand drills aren't exactly made to be machine mounted.
Dave911: try air tools, or the flexie wands that hardware stores sell
air tools are usally steel bodyed and small so easyer to make a mount for them to adapt them
Good idea... I was thinking electric drills but I could use an air powered one also... thanks....
try and find a 500RPM one
unless you plan to be making like <1/4" holes
well, under 3/16" regularly
the torque lets you just chew metal like no tomarrow insted of just skiming the surface dulling your bits
perhaps make a mount for a right angle adapter?
Might work, if you buy a good one
do NOT buy a cheap one, the gears will strip near instantly
* BlackMoon knows first hand
[15:58:36] <atmega> http://www.thetoolcounter.com/acatalog/SA26.jpg
[16:01:24] <GreyMoons> http://www.lasaero.com/site/part/details?part=ATS6110
something like this will be easy to mount in a 'split clamp' setup
Dave911, I left the sound drivers off, but some might want them. I'll check it out later when I get some time.
if its just an emergency
mount a square bar into a toolholder
GreyMoons, hp compressor rate?
and use pipe clamps to clamp the drill onto the bar
robotito: for a drill like that? 2~5hp
my 500rpm drill keeps even pace with my 5hp compressor
its kinda lame to use on my 2hp compressor but it works
GreyMoons is now known as BlackMoon
if you look really hard you can find air drills for $20
but $40~60 is much more common
iv not been disappointed by any of my cheap (princess auto) air tools, they all seem like really good all metal copys of 1980's air tools
yea no fancy durometer polymer handles or whatever, but they get the job done nicely, and properly oiled seem to last fine
and feel heavy enough that they probley won't explode in use.
weird all that websites drills are like 2000+rpm lol
2000rpm is only good for tiny bits. will burn out bigger bits fast in anything more then wood.. and even then
I used to think drilling steel was hard, especialy big holes
then I tryed fresh bits with a 500rpm drill
Iv pushed chinese HSS through 3" of mild steel with ease.
spin fast, feed fast
spin *slow*, feed HARD, with oil.
3/8" holes at 4000rpm in AL is fine
so hard your drill just about stalls
you have a strange method it seems
(air drills are wonderful for that, stall torque = same as operating torque so you don't suddenly get your arm riped off if it gets stuck))
aluminums pertty easy like wood
gotta love when you have something in a drill press and suddenly a 10lb part is swinging around
but even then id do low RPM's and watch the aluminum snake up my drill flutes like helical rods
* bill2or3 does not love that.
jackc_: my brother showed me as a kid not to do that, by getting his hand riped open infront of me and the workpeice bending the bit to 45 degrees at 500rpm, then snaping the bit and flying across the shop landing with a THUD
ya know, after vibrating the drill press like a bat outta hell for 5 seconds
'OK.. lessson 1, Use clamps'
allways.. use clamps. lol
try a low RPM drill someday and high feed pressures
you don't even need to peck drill deep holes if you do it right because the chip becomes a continious rod
that snakes up the flutes of the drill and out the hole
well, 2 rods, one for each cutting edge
nothing builds up in the hole because well, theres only 1 chip
and the low RPM really keeps heat on the bit and hole down
though I still use a liberal amount of cutting oil on mild steel, and it does tend to smoke off
thats how I know to add more, it starts smoking.
but still its only like a few drops a hole unless REALLY deep
Dave911, I have a .config specific for 945GCLF if you want it, striped down with very few modules and drivers.
try it sometime, set your drill press to its lowest rpm setting insted of what you usally use and use a little cutting oil and enough pressure to nearly stall the drill press (or nearly snap the drill bit)
mind you a drill bit can support a supriseing amount of force for its size
especialy in a drill press where the force is properly aligned
snaping drill bits pressing down is because you accidently press sideways too. it takes very little sideways force to snap a drill
ok i'll stop ranting now..
BlackMoon, best aluminums for machining?
OK, so the drill in the lathe tool holder is solved.... I even have a 1/2" air drill I forgot about! Round housing and all.
What about putting a slot across the end of a round workpiece in a lathe. The workpiece is about 1" in diameter. I'm thinking of using a milling slot cutter, about 1/8" thickness to make a slot about 1" deep. I can't turn that very fast due to the diameter of the cutter.
What could I use? I have hydraulics available. A hydraulic motor? This is really sort of a live tooling thing, as was the drill idea, but I don't want to spend a fortune doing this.
watch the cnc sliding head videos on you tube for inspiration (and jealousy)
<clytle374> Is your .config file for Ubuntu 9.10 SMP also? The config I put on the wiki is pretty bare other than the audio drivers. I left in the network drivers also though.
sliding head? I never thought about looking for stuff like this on Youtube... I'll look, thanks
Dave911: you can't really use a drill for much more then.. drilling
Dave911: buy a crappo spindle attachment for a lathe and mount that up somehow
or a taig spindle or something along those lines
(the 'milling head' attachments for 3in1 lathes can be bought seperately)
for a cheap spindle for an assembly like that there are some cheap er16/25/32 that could have bearings added and fitted in a block
now while they suck ass on the mill normaly, by mounting them onto the cross slide you'd have a useful tool
Yea, depending how much work you wanna do and how much you wanna buy
im pertty sure you can get a basic low end milling head spindle for like $250 though
so unless your gonna make a damn good one you might not wanna bother.
Dave911: also if you have a mill theres lots of ways to do such operations in a mill accurately
to add a slot onto the end of a (long) shaft, use a sliting saw
Or keyseat cutter, T slot cutter, etc etc
im thinking http://cgi.ebay.co.uk/ER25-1-2-STRAIGHT-SHANK-CHUCK-CNC-MILLING-LATHE-C48_W0QQitemZ380213836459QQcmdZViewItemQQptZLH_DefaultDomain_15?hash=item588682baab
eww, 1/2" spindle really?
ok but yea, good idea.. maybe a 1" one
id question that things runout however for how cheap it is.
I just found an example one there are various
kinda seems to me that thing should be like $60 for a decent chinese one
yea point taken..
he has er32 on 3/4" shank
Yep, I just want to avoid 2nd operations as much as possible. The part I am trying to figure out already has a second operation that I have to do on a press. I would have no problem spending a $500-$1000 or so if I could do it and keep the part in the lathe chuck to cut the slot.
Dave911: oh then you might wanna consider a real live tooling spindle at that price, or working on your own
Slitting saw.. that's what I was thinking of. Even better if I can keep it drowned in coolant while I am doing this.
you can use your cross slide/carriage as X/Y, but you kinda will want to add a Z axis
I thought live tooling spindles were a lot more than $1000 for anything decent...
And your compound swivel can be used for well, swivel :)
Yea, but you can probley get somethng for $1000 if you looked around enough, especaily something used on ebay
anyone got some nice tips for tapping? =) having some odd issues that just appeared, like the damn things wont grip
if your lathe is big enough to handle it is another question
frallzor: what won't grip what?
tap wont grip the hole
so to speak
try enlargeing the hole
Im baffled why it wont
or its a dull tap
or you are not pushing hard enough..
I guess I have better start surfing and see what I can find... thanks!
trust me, im pushing hard :P
grip the hole?
and using new taps
frallzor: Brand/name/marketing BS of taps?
got a new drill too just to see if the old one was worn down. no issues there
frallzor: what kinda marketing bs does the tap say?
like as to material type
Is the material really hard?
some taps need different as well
specially a forming tap
it just says M8x1.25 6.8mm hole, hmm
Cheap hardware store taps are not allways ground correctly.
ah, HSS is probley an OK tap then.
frallzor: Its ok to use a slightly bigger drill in hard metals
cutting tap, not forming
slightly bigger = 7 for ok?
as in, anything harder then aluminum
is it a hand tap or a machine tap with a helix
I just do the first with a machine then do it by hand
weird, I can't find any metric charts with 50% thread depths
but yea, Id just use the next size up and give it a shot if its mild steel
no risk of it being to shitty with 7mm instead of 6.8mm?
All depends on the application
and how many threads are engaged
[17:17:37] <frallzor> http://vimeo.com/10139114
about 20 thread on each side
probley be fine, thats all steel
its more like 1/4" and thinner plate you gotta worry about, or when your torqueing down big bolts
probably doesnt work for me =)
well then try diffrent taps :P
and double check your hole, maybe you grabed the wrong drill or that drill was undersized
do did done
as I said, got new drills etc etc to check =) no issues there
how about try 7mm in a scrap metal and torque bolt to fail
could work, If I had some scrap =(
if bolt fails before monkeywrench hand aches, its not good enough.
how can you not have scrap
table on the net says 6.9 http://news.bbc.co.uk/1/hi/magazine/8570244.stm
[17:21:03] <archivist> http://www.boltdepot.com/fastener-information/Metric-Tap-Drill-Size.aspx
yea and iv seen others that say 6.8 and 7.0
the odd thing is it worked fine for about 30 holes
then now its a no go
Maybe your tap is dull now?
Or your hole has a big ass burr in the way
Dave911, yeah it is smp. forgot that it is also for 22.214.171.124 which has a isolcpus bug and needed another patch.
well, it broke, 1 didnt work, and I got 2 new ones
well, new taps are oversized then. :P
I cant figure this out at all, nothing should be bugging this!
at the very least try chamfering the entrence of the hole
like hand countersink tool even
Dave911, I saw the networking and just assumed you left everything as modules. Probably no performance difference anyway.
just a mm or so
good idea, got a nice tool for that
give it something to bite into
ill try that! brb
<clytle374> Can you send me your .config file? ..... I'd like to take a look at it.... you can email it to dave at colecontrols dot com
jackc_ is now known as jackc
Dave911, shipped it. It you see something dumb it did let me know. I never ran make firmware or headers, and never have in the past.
maybe I've been screwing up the whole time, never had problems
or something else
ok, what about it
worked like a dead prostitute
thanks.... I'll let you know how they compare. I think the firmware compiles are for the Mesa boards... I saw that done before so did it again..
frallzor: You do realize there is demand for that, right?
frallzor, they did give you right hand taps ?
I have no idea why these wont work now
Jymmm, we just had a little discussion about the software, and I thought you might know the answer to a question
it was about source code availability and Freedom (note the captial F)
You get the source code once you buy a license ($65). Note: You are purchasing a LICENSE, Not the source code itself. copyright, blah blah blah
yep. that's what we figured
you can look but you can't touch, more or less :)
you can touch.. just not distribute.. ;)
Does your mind throw a message "conscious tainted" when you read it?
But, it's written in Pascal. I suspect that someone could plagiarize and write it in c
or just not bother
rewrite in ruby!
my mesa stuff arrived today :)
He does something internally to tcnc to allow it to have 15MB of ram without HIMEM.SYS
it'll be interesting to see how it'll work out
All you need is: IO.SYS MSDOS.SYS COMMAND.COM and TurboCNC.com
no AUTOEXEC.BAT or CONFIG.SYS
himem isn't necessary to adderss 16M RAM, it's only necessary if you want DOS to manage it
SWPadnos: That's the point. 99.999% of DOS apps dont manage their own memory
oh, and add a mouse driver if you want
you can do all sorts with Pascal /me used to
I'd think it be very cool to rewrite it using VESA
turbo pascal was an excellent programming environment for the time
it (and turboC) still are for DOS
The FIRST RT OS =)
um. no :)
ok 2nd if you count CP/M
but I meant for x86
$50k? 100k? 10k?
SWPadnos: You can see the target plate move after being hit
no need for DOS, get rtai running on this -> http://sharism.cc/products/ben-nanonote/
would TurboCNC use DPMI like a djgpp prog?
that's what I'd use for a DOS cnc, with Allegro games lib for the IO & gfx
with turbo pascal you can have pointers to memory, so use what you like
which version of TP? if it's like TC++, then 2.0 is 16 bit only, but 3.0 uses dpmi
consumerism is weird. a whole nano-note is $99, but the bare dev board is $199
ries_ is now known as ries
Can you call a sub from MDI?
I thought you could, bit it doesn't seem to work. (I get "file not open")
I think there was a relatively recent bugfix for a problem like that
I don't know how recent, nor whether there's a released 2.3.x version that has the fix
OK, I will try it on the real machine. The "practice" VM is running 2.3.0
NanoNote + No connectivity = Useless
What is the latest version? My real machine is running (I think) 2.4-pre But I hear reference to 2.5-pre. Is 2.4 due to be skipped?
there's already a branch for 2.4, which no longer gets new features added
so there's 2.3.x, which may have another bugfix release or two
there's 2.4, yet to be released, and with a currently fixed set of features
and there's trunk for new development, which should be called 2.5~pre
(since it will eventually be 2.5)
Right. Any must-have shiny new features in 2.5 yet? (2.4 currently works nicely)
I should figure it out before I take over as 2.4 release manager though :)
A mere detail, I feel
BOW DOWN TO ME!
SWPadnos: alex slacking?
err, I look forward to serving the community in this manner
no, it's jepler actually
andypugh: no shiny new things in 2.5~pre so far
most effort goes towards 2.4 stabilisation (I hear :/)
:/ because that's the extent of my involvement lately ... hearing about things
andypugh: alex_joni: newest thing in 2.5 pre is ability to translate realtime emcmot errors messages (like joint following error)
Jymmm, yeah I noticed the lack of parports on the nanonote, but maybe a usb2->pio would be effective
notice I specifically say usb2, but I guess most are usb1 which is plenty for printers
MattyMatt: Only certain Panasonic and Fujitsu has paraports these days
it would only be effective if you have a CNC controller that thinks it's a printer
then there you go
I keep telling it it's a plotter, but it thinks it's a color laser *shrug*
if it emulates epp, then mine runs off one port with a straight cable :)
WTF ?! http://sfbay.craigslist.org/sby/tls/1648638823.html
that's dremel size
so that's expensive. I hope it's sharp
lol at craigslist endmills.
Coated carbide.. kinda worth the asking price but meh
micges: I doubt many people (except non-english natives like us) will be excited about that
alex_joni: if only a few
if there was a full chinese version, all the cheap boards would come with emc2 instead of pirate copies of mach3
or as well as, at least :)
dammit, forgot to go and buy hoseclips today
twisted wire won't clamp this brewing hose to a 1/4" shaft, I don't reckon
hmmm, my MPG puts out a quad signal and hostmot2 encoder does not seem to have an X4 pin. I'm open for ideas on the proper way to handle this...
x4 is default on hm2 encoders
JT-Hardinge: so you should be fine, just plug it in :-)
hmm, wonder what I'm doing wrong I get 0.004" move for each click
scale is set to 1
I set it to 4 and still get 0.004" move on both axis for each click
* JT-Hardinge wonders if I'm setting the wrong thing
set it to .25
net mpg-count hm2_5i20.0.encoder.03.count
4 counts * 0.25 = 1
net mpg-count => axis.0.jog-counts
I still get 0.004"
where are you setting the scale?
something is wrong :/
you need to set the halui scale, not the hm2 encoder scale
hm2_5i20.0.encoder.03.scale this is where I have the mpg connected to
since you're using the unscaled integer counts from the encoder
wait, are you using .counts or .position from the hm2 encoder? if it's counts then hm2 scale doesnt matter
ah, then just ignore me!
it's gotta be count, since that's what halui expects
I'm not using halui but axis jog counts
interesting. I'll have to read about that
oh duh. motion controller, not AXIS :)
yeah, you need to set axis.0.jog-scale to 0.25
or however it's spelled
it's set to 0.001 now
ok - that's the amount to move for each count
you will get 400 counts per revolution of the MPG, so you need that to be 1/4 the amount you actually want per click of the MPG
or you can divide the MPG value by 4 in HAL somehow
setting hm2_5i20.0.encoder.03.scale 4 and using hm2_5i20.0.position seems to give the correct numbers :)
sure, if only you could connect a float to an int in HAL
I see the problem now LOL
just use different scale values on axis.n.jog-scale
0.00025 will give you 0.001 per click
andypugh, wrong direction
Or is that no help here?
Um, 1 click == 1 kilometer
conv_float-u32 would do it
Jymmm, no, i klick == 1 kilometer
I klick, you klick, we all klick!
SWPadnos: that makes it move 0.010" per click
there's a problem with using floats though, which is range - a counter will overflow at some point, and hopefully the jogging code knows that
add another zero
doing that now
SWPadnos: thanks that is working now :) but confusing a bit at first
Isn't the float a double? That won't run out of precision for several weeks fo fast twirling
yep. I guess seb and/or PCW need to add x1 mode to the hm2 encoders
JT-Hardinge: SWPadnos is always confusing, but always means well =)
(which up/down mode may do)
SWPadnos: Yeah, sez me!
sometimes I choose to be unhelpful, so there!
The significant bits of Double are 52 bits long. That's a lot of encoder counts.
yeah, too many of them
by about 20 or 21
I suspect the MPG would wear out before overflowing.
* JT-Hardinge hands SWPadnos a cold cerveza and listens to Take Five by Dave Brubeck
(Or not being able to count individual counts any more, which is what I am really discussing)
I've got Steely Dan on :)
that's good too
(Black Cow - a bit jazz-like)
yep one of my favorites from them
heh. and then on to Saldek, by Dead Can Dance
the hm2 encoder-counting firmware does not support x1 mode yet
can you configure any outputs and on the mesa 7i47 as you like?
a totally different sound
* skunkworks was recovering someones computer and listening to thier music.. Right now it is superstion from stevie wonder.
anonimasu: If you are asking what I think you are asking then the answer is "yes". If you are asking something else then the answer is probably "probably"
I'm asking if I can choose a arbitrary pin to output stuff for my stepper drivers
likewise for inputs
if it is not in use by something else
how do you mean?
oh 7i47! not 7i37
* JT-Hardinge hands the microphone to someone else
Err, yes, I was making that error too. Ignore my previous answer.
(Actually I was thinking 7i43)
that is the printer port one?
we are all confused then :)
what the hell is a 7i47?
the 12x RS422 interface
* SWPadnos just looked it up
anonimasu, sure, you should be able to use it for whatever you want, subject to the limitations of the hardware (ie, is it outputs or intpus, etc)
I ASSUME that you can use the pins that are not used by the step drivers as what ever
* skunkworks ducks as the microphone flys by
you could even use stepgens, up to the max RS422 speed the chips support
* JT-Hardinge gives it a smack so it keeps going by
* anonimasu nods
but I don't know how the I/Os work on that board (transmit enable + bidirectional data, TX and RX, etc)
Talking Heads - Once in a Lifetime
it says emc supports it afaik
it'sa daughterboard for the 7i43
ok, it looks like it's got 12 outputs and 12 inputs on the FPGA header
anonimasu: after you configure it then run dmesg I think to see what pins are used for what
or what pins are leftover for gpio
* JT-Hardinge wanders off with the dog before she drives me nuts
I see that's nice stuff
the RS422 stuff in working?
oops, the RS422 stuff is working??
oops again, i'm confused... wrong mesa board
wait, I think that is close to the 7i48 board, needs a experimental patch. At least it did a few weeks ago.
Still setting up and testing the 7i48 board.
If only I could get trimming pulleys the size I need.
6 servo interface board?
What size timing pulleys do you need?
the wiki says it works
andypugh, gt2-2mm about the same size as the shaft it goes on.
anonimasu, funny 6 encoders on a single 50 pin cable plus the step direction outputs.
Ah, I have something like that on my fast-rotary axis. I bored out pretty much all but the teeth of a small pulley, then pressed it onto a steel spigot.
isnt it just a isolator card?
anonimasu, don't think so. It looks like it is RS422 between the FPGA card and the 7i47, I didn't think that worked yet.
andypugh, I need it on the servo shaft. Now my friends haas, that is backlogged 3 weeks, has a bad spindle.
So making parts is a problem.
damn then I bought the wrong card :(
PCW, are you here?? This is your expertise.
anonimasu, Where did you read that it works?
I could be wrong.
or maybe pcw_home ?
damn it isnt :S
My spigot fits on the (stepper) shaft, but the actual teeth are beyond the end. In actual fact I think the pulley OD is a bit less than the shaft diameter, so there wasn't much choice.
andypugh, I hate to load my servo bearings like that. Thought about running the pulley in its own bearings.
* anonimasu sighs
I understand your concerns, but I think they might be misplaced.
That would put the load way out there, on a 6mm shaft
anonimasu: 7I47 requires a special configuration (bit file needs a 7I47 in its name somewhere)
PCW: no chance to get it working?
This is so the FPGA pinout matches the 7I47
clytle374: I would be more concerned for the shaft than the bearings in that case.
pcw: does is the 7I48 supported?
There should be no problem getting it working
skunkworks, so far it work
7I48 is supported if you use Jeplers patch
cool - I like the idea of not wasting all the enable pins..
hm, what's the best way to make sure it'll work grab emc and test it?
I was planning on buying another 7I33 but maybe the 7i48 would be better - that would give us xyzb + spindle
You need an appropriate bit file, EMC doesn't care about the 7I47 one way or the other
is it hard to change a bit file like that myself?
although... 2 7i33 would give us the abillity to do dual loop encoders.. (2 encoders for each axis +B and spindle)
(if we get our linear scales working)
descisions descisions... ;)
The 7I47 is just a 12 output 12 input differential interface card, depending on what you want to do you could make a 6 axis stepgen + 4 encoder interface or whatever
PCW, so is the transfer between the 5i20<=> 7i47 serial?
* anonimasu nods
no just parallel (though there is a HostMot2 UART)
(with no driver support)
PCW, thats. I miss read that bad. I though 12 encoders, not 12 inputs. hence my confusion.
this constant state of confusion is wearing on me. maybe I should start drinking.
* JT-Hardinge hands clytle374 an ice cold cerveza
* JT-Hardinge welcomes clytle374 to the world of CNC conversion :)
anonimasu: new bitfiles require compiling from source. What FPGA cards do you have and what do you want the 7I47 I/O to connect to?
200 or 400K?
The 7I47 a good buffer for step drivers+ differential encoder interface
sounds just like my plan it should be enough for my home/limit switches and 2 axes
and some random IO and some buttons
anonimasu, sorry for scarring you on that.
hehe dont worry, I were just about to write it off as a "if you are stupid you pay twice" moment
I am sure that the lovely PCW would have given you a refund :-)
there's an existing 7I47 pinout for the 5I20/5I23 that I could hack down to 48 pins, it has
4 encoder inputs (A/B/I each)
4 stepgens (step+dir each)
2 pwmdir pairs
that sounds awesome for my app
I'll whip up a bitfile but probably not for a day or so
that'd be awesome!
Hitting "Home" on a VNC screen when you can't remember how you left the machine is slightly scary.
how does it work with the 7i33 can you assign i/o arbitary?
actually a better question is does it work to use it for on/off i/o
[21:47:09] <skunkworks> http://cgi.ebay.com/Kearney-Trecker-Milwaukee-Matic-600-HMC-Machining-Ctr_W0QQitemZ170459601524QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item27b02f1a74
7I33 is a analog servo interface. so normally it does not use GPIO, but rather PWM outs and encoder inputs
which means theres a special FPGA pinout that matches the 7I33
on the 7I47, you can certainly use outputs that are not used by say stepgens or PWM as general purpose outputs
does that require more modification or do I just need to set emc up to use that as inputs or outputs?
skunkworks: Wrap it up and pop it in the post for me?
The way HostMot2 works is that special function outputs that are not used become available as normal GPIO
so say you have 4 stepgens on a 7I47, but only enable 2 in the driver, the means that stepgens 0,1 are active and the 4 I/O bits
that stepgen 2 and 3 used are now available as 4 GPIO pins. which could be 4 outputs in the 7I47 case
a bit OT but are there other names for a metal honeycombed material?
I cant wait to try this out :)
inputs are always available whether the special functions are enabled or not (You can read encoder input pins as GPIO if you like)
7I47 inputs are not too suited to limit switches as they are differential, but if you disable termination
and tie one input to 2.5V you could sense 5V signals OK
ds3 this stuff? ive had to machine the hastalloy type http://www.honeycombone.com/about-honeycomb.php
i think hexcell is a tm, but used as a generic name
The tm has one "l". I am not sure about the generic
www.hexcel.com seems to be graphites, we used edm to cut it because mills just push it around. its strong in compression
ds3 you got an application?
yes, any of those
tom3p: I need a table for a laser cutter I am refitting... McMaster has it but it seems $$
You need light, flat and stiff?
How about foam-backed wallboard?
just flat and low reflectivity
cannot absorb FIR or it will be destroyed by the laser
Ah, you want the open-cell structure?
yeah or a metal perfboard if there are such things... perf sheet metal leads me to expensive stuff but that could work too
I want minimal surface area on top if this makes sense...i.e. a ton of aluminum tubes standing on end with the sides welded would be fine too
ds3 expanded metal?
pfred1: that leads me to something that isn't flat or has way too big of an opening (parts falling through problem)
the stuff on the honeycombone looks about right but I don't see prices
ds3 yeah how big you need it?
ds3 maybe you can find some kind of oddball light diffuser?
ideally - about 15"x12"x2"... the thickness can be worked around... min size is probally 12x9 (largest stock, I'll just have to be creative in how I mount it)
pfred1: most of those are plastic... alums are listed but no prices
ds3 yeah a twin tube diffuser should be bigger than that if you can find a suitable pattern
[22:37:16] <andypugh> http://www.bustin-usa.com/products/truckAccess/deckplate/traditionalDeckplate.php
andypugh: that doesn't look very flat
well I have my sacrificial PC setup to test my port buffer board out on
I have seen designs with more surface. Thing prison walkways...
Hmmm I guess I'll pester the local metal suppliers
Thing is, it is likely to be very cheap and easy to replace.
ds3 if it were me I'd build some kind of a lightweight frame and get fine expanded metal or something to tack over it
i suspect there might be a term that I am not using
pfred1: I am leaning that way with perferated sheetmetal but that stuff isn't that much cheaper
there is perfect stuff that is used in the ceiling above me right now covering a vent but it'd be bad form to....
check this stuff out : http://www.expanded-metal.org/expandedmetal/microexpandedmetal.htm
ds3 if your parts fall through there make bigger parts!
they have some nice stuff... not sure if it is worth contacting another hemisphere to buy a 1sqft of it
isnt a 'bed of nails' used on lasers?
ds3 yeah it has broadened my horizons on the expanded metal front visiting that site
I figure if the holes won't let through a 0.250x0.250 part, I should be good
tom3p: yes, but got a cheap source for it?
ds3 how about a really nice metal window screen frame?
you know with metal screen?
done well that should be prety flat
pfred1: the ones I have seen aren't very flat (it sags in the middle; more then the thickness of them material - 0.125)
I think that metal walkway material would work nicely.
you can get like stainless steel metal screen too
This is a good picture of what I mean, though this is old, bent, stuff.
[22:46:26] <andypugh> http://www.ppmindustries.com.au/cmsimages/Web%20photots%20043%20(Small).jpg
andypugh: then hole sizes, I think it'd be great
that size is probally more suited for a plasma though
The rear pile looks smaller
andypugh it looks very heavy
I know where I have seen this... they are covers for the steam vents and underground transformers in the big cities
And they make whole floors out of it, it must be pretty cheap
ds3 airy ways
kitchen hood filters looked about right but they are flexible and wavy in the middle :/
Right, need to be on the road at 5am (that's in 6 hours time) so time to sleep.
thanks for the suggestions
ds3 they show big machine laser tables but the little ones are a mystery!
pfred1: I looked inside an epilog once and it had the honeycomb thingie if my memory is right
Sooo, are those cute little sherline mills useful?
ds3 that is what made me think of lite diffusers
I saw one in a shop window today
Optic lots appear to think so
It seemed well made
Optic you can do small work on a big machine but it is difficult to do very big work on a small machine ;)
pfred1: they would be fine if I can source them
ds3 industrial lighting supply houses should have them
Hehe good point. :). But a small machine is better than no machine
I'm mostly wondering if they are reasonable quality
Optic unimats are cute too
pfred1:not sure how to find those either... McMaster nor MSC seems to carry them
ds3 ds3 http://images.google.com/images?um=1&hl=en&safe=off&tbs=isch%3A1&sa=1&q=honeycomb+grill+&btnG=Search&aq=f&aqi=&aql=&oq=&gs_rfai=&start=0
ds3 didnt find cheap for sale, but i think a bed of large aluminum nails will work, and be easy to replace the burned out ones, needs a grid far enuf down that wont be cut.
[23:02:44] <alex_joni> http://maps.google.co.uk/maps?f=q&source=embed&hl=en&geocode=&q=&sll=50.823577,-0.133577&sspn=0.00122,0.002304&ie=UTF8&hq=&hnear=&layer=c&cbll=50.823577,-0.133578&panoid=bZ_zx1I3Jno2dGPdkkVZjg&cbp=12,214.92,,1,1.3&ll=50.823492,-0.133638&spn=0,359.982319&t=h&z=16
MarkusBec is now known as MarkusBec_away
tom3p: you mean actually buy a box of alum. nails and drive them through into a board? 2 questions - how do you sure they are the same height and where does one find alum names? I see copper, galvanized, and plain but never alum.
ds3 they make aluminum nails for siding
Hmmm do they make alum. all thread?
say in #4 or #6 size
thread a slab of aluminum and screw in all thread cut to length on a lathe
ds3 I like the name! EMC
pfred1: that'd be perfect!!!! except it is from the other side of the pond
ds3 they know what you want
ds3 not thru a board, a grid of metal with tube at intersection, nail inserted into to tube and cross pinned by set screw ( designed as i type ). http://www.pitt.edu/~dwilley/Show/NailBed2.html
a trip to the local metal supplier is is definite in order
iirc the beds were open frame and a water bath was below
ds3 after seeing these things I'd hit up an HVAC supplier myself
ds3 keep your eyes open and a small jimmy bar in your pocket while you're in public buildings!
pfred1: I donno of any decent HVAC suppliers but those are great ideas
8" Aluminum gutter spikes
ds3 I've seen some speaker grilles that might suit you too you know the perforated metal kind
ds3 these things do look pretty sweet though and come on the name! Honeycomb EMC Air Ventilation panels (Attenuvents)
I guess another way for a bed of nails is to drill/ream a slab of alum then shrink fit them on
I'd probably set the stop on my mill and press each on into an undersized starter hole
or hey if they're all the same size you could probably hammer them in then press the last little bit to make them all even
I'd still predrill the pattern
id get the grating andypugh showed, add a collar at each intersect with a set screw. put gutter spikes in the collars. one part is surplus, the disposable part is cheap
rats the printed heat shrink tubes dont shrink enough for 18ga
* pfred1 prepares to smoke test his board ....
darn brain lock
hmmm so far so good
whole board draws 30 ma at rest
and no magic smoke let out of anything!
check back later
20 ma is the two indicator LEDs I felt I had to put on it
now i have to draw test all the goezintas and goezouttas on it
for such a simple circuit this project sure got awfully complicated
pfred1: been there..
skunkworks heh I mean its just a rotten buffer
I was reading in some forum a horror story about a guy who was setting a system up and got no axis movement and one of the things they changed out was their BOB
tlab Break Out Board
tlab I made my own
tlab so far but it hasn't been fully set into operation yet
tlab I just powered it up and that went well now i have to meter it all and make sure it switches and doesn't draw and puts out etc
for parallel port or something else?
tlab yeah just for a parallel port
my bob uses RF isolation
tlab 12 out and 5 in
tlab my ins are all optically isolated and i have optos on all of my motor drivers so they're just buffers
well 4 of the ins are optically isolated the fifth is just through 2 inverters but I don't plan on using it right away if I do I suppose I could throw another opto on the board for it
it is perfboard
tlab want to see ap icture of it halfway done?
tlab thats all the parts I soldered a DB-25 on a ribbon to it all
tlab so just magine that board with a gray ribbon cable hanging off it and that's it done
[23:52:37] <tlab> http://dl.dropbox.com/u/3706935/DSC006921.JPG
this is mine + stepper control boards
tlab that is nice and clean
yea I tried heh
tlab what kind of motor drivers are those for servos?
I designed the boards myself and had them made, then soldered the parts on
tlab: how mcuh did having the baords made cost?
pfred1, do you have a cnc?
Jymmm, I think it was like 60-70 bucks for 8 boards
tlab not yet I am still making my electronics
tlab here is my motor driver i made not as nice as yours: http://img683.imageshack.us/img683/6498/stepproto1.jpg
if it works, it works
pfred1: you need another 100 breadbaords
Jymmm heh a buddy of mine said to me once i should do a room in my house with them and just keep making circuitso n it all
how much of that is for one stepper?
tlab yeah it works OK I can do like 926 RPM in EMC and still have usable power
pfred1: ALL of em
tlab: all of them
what kind of driver are you using pfred1 ?
tlab and SLA7026M
pfred1: I know someone that actually has a functioning computer layed out and mounted on the wall