does this sound doable for EMC power tapping - modified battery powered drill to have a moderate resolution encoder (10-16 pulls per rev.) replace the chuck with some kind of tap holder. replace the reverse switch with a relay controlled by EMC?
ds3: 16 pulses per revolution is a lot less than anyone I know of doing rigid tapping
consider running a 3/8-16 tap. each turn of the tap requires a Z move of .0625. so at 16 pulses per revolution, each encoder pulse represents a Z move of .004 inches. when reversing it seems like the tap would end up being pulled out of or pushed into the thread at least .004 inches. this might or might not break the tap, but it doesn't seem like it would give a good thread.
would this be a special purpose machine just for tapping? I don't understand why you aren't using the machine spindle.
well, it is simple... I don't have a speed controller I can interface to easily
and I am not building a 1/3hp speed controller... but a drillis easily enough to deal with
the machine I want it on won't do well with a 3/8-16 tap anyways.... I think the biggest (if I am lucky) is a 1/4-20... I want it more for the stuff like 2-56 (with a forming tap)
jepler: how many PPR have people done it with?
(important detail - I have a ez430rf kit already... no AVRs on hand :D)
I know someone using a 360ppr encoder http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Pjm
hmmm 360 hmm
that's 360 lines/marks I need to put on a disk
* fenn curses his lack of a webserver
are they accurate enough? and how large of a disk are you recommending? (I was thinking of ~1inch disk and my printer is 300dpi)
kinkos has like 2000 dpi printers
1 inch sounds pretty small
real 2000dpi or the enhancement technology 2000dpi?
i dont know
I am suspicious of any printers > 600dpi
i'm suspicious of any printers :)
Who else here uses a tormach?
I'm seeing an issue that is different between using Mach and using EMC2... spindle RPM is off (slow) by about 10% when running emc2
fenn_ is now known as fenn
Martyn: are you measuring rpm?
Crap, one of my routers went out
My guess.... Is you may need to tweek 'setp stepgen.4.position-scale 2.5' in your hal file...
and hi all
what did people do before e-bay??
and machine tool auctions
skunkworks : I hooked an optical encoder onto the spindle, and am using my fluke as a tachometer
skunkworks : When I use Mach, it's accurate .. emc2 it's off by a consistent 10% or so
which is confusing
skunkworks : I think I may need to put a permanent encoder (maybe a magnetic one) onto the spindle, and change the way emc2 is reading it
because cutting too slow is bad.
for some reason i think this 9x20 lathe is a little more capable than my 9x20 lathe. http://cgi.ebay.com/CNC-Lathe-Okuma-LB-15-OSP-Chip-Tooling-Price-Reduced_W0QQitemZ330287644906QQcmdZViewItemQQptZBI_Lathes?hash=item330287644906&_trksid=p4011.c0.m14&_trkparms=72%3A1205%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1318%7C301%3A1%7C293%3A1%7C294%3A50
nice looking unit
i'd like to have it
it weighs 30x more than mine, but only costs 15x as much
what a steal
this one might suit me better though... http://cgi.ebay.com/MORI-SEIKI-SL-1_W0QQitemZ110380059838QQcmdZViewItemQQptZBI_Lathes?hash=item110380059838&_trksid=p4011.c0.m14&_trkparms=72%3A1205%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1318%7C301%3A0%7C293%3A1%7C294%3A50
* dareposte drools on the mori seiki
That mori is in pretty piss poor condition
$5k is not a fair price.
Too bad you can't offer $3k :)
oh, wait, you CAN!
I just saw the "make offer" button
i'd offer 2800
but i need to see more pics to even bother with the drive to inspect it in person
too much sheet metal in the way to see anything useful.
you should see the tormach I picked up
complete, even have the 4th axis rotary ...
less than $10k
i've been watching for something nice and solid for a few months now
come real close a few times
tormach is a fairly small machine right?
i've kind of been leaning more and more towards one of those cnc swiss machines... so fast for production
I repair the larger machines for a living. I'm on a 9 month hiatus
so I bought the tormach, and I'm determined to learn Linux, use emc, and get a better foundation on open hardware and systems
i've seen some videos it looks like they are fairly solid for the size
it's the only 'hobby' grade machine than can machine steel
i almost got a manual mill that size, but wound up with a series 1 clone i'm converting
in that way, it's as good as a bridgeport
i've heard the zx-45 machines are solid for steel
the tool is powerful, and you can do amazing things at low rpms
the cx45 is a proper mill, geared drive
isn't it a hobby class?
the x2 is a gear drive too u know ;-)
Sure, but it's not in the same class as the tormach when it comes to automated CNC
yeah they are only manual, r8 collets i think
so you have to servo it up, and then go through the whole process of calibrating emc2 to do anything with it
as I found out, the tormach is practically plug and play
I can flip between Mach and emc2 just by rebooting
does the tormach come with ballscrews already in it? or servos and leads
what do you think?
It's hobby grade, but used as an accesory on pro lines.
so screws then
yep. That was a major decision on my dropping enough to buy a small car :)
yeah that's where i'm at
i really want a new motorcycle... or a used cnc turning center
the price is a draw
enjoyment is probably a draw...
used cnc wins on depreciation i think..
the tormach has a fancy repeatable tool holder doesnt it?
i've seen references to the tooling it uses but never paid that much attention
not particularly fancy
repeatable is better than fancy i guess
[02:52:06] <jmkasunich> http://www.tormach.com/Flash/TTS_small.gif
a 3/4" collet that lives in the spindle all the time, and a shoulder on the toolholders
is it a special collet too?
the collet nose is a bit shorter than normal
you don't want the tool to touch the nose of the collet, it should contact the nose of the spindle itself
it looks like the tool holders wouldn't be all that difficult to make on a lathe...
but simple endmill holders are pretty cheap from tormach, almost not worth the trouble
probably ground from them too
they want $92 for an ER-20 collet chuck
wouldn't that sort of defeat the purpose of the special system?
I got two $50 ones from Mari-Tool (see ebay, or google), and made the collars
you put the tool in the collet chuck when you set up the job
dareposte : It does indeed
dareposte : But it's just a tool holder
i can see if you were running a batch of parts and just needed one er chuck'ed tool it would be nice to have
my TTS tooling: http://willepadnos.net/jmkasunich/mill-tooling-2012.jpg
dareposte : I am going to work on a quick change holder once I get some parts in
I've since added one of their 1.5" face mills
I'm just going to modify the head from a Mitsubishi mill
Martyn: did you consider bigger vmc's? you can get some full sized ones for pretty low cost these days, used of course
space is an issue
dareposte : I did, but since the point of this hiatus is to get a solid education on Linux and I wanted a mill I could get up and running quickly, I chose three mills
I have a flashcut CNC
and a McWire reprap
all three fit nicely in the garage
so the goal is mostly educational then?
OK, router repaired and back up
makes sense then
The faster I learn more python, linux, and such .. the faster I can work on an idea
my goal is always to make boatloads of parts with as little work as possible
dareposte: isn't that called outsourcing
(A friend of mine has been thinking of starting a company in the same vein as the shopbot)
but instead of milling wood, he wants to build a linux-based CNC mill, and CNC lathe
rapid prototyping has become more important than ever recently.
hm well i got the cnc lathe part already, it's working out pretty well except for changing the *#(%@ tools every 5 seconds
dareposte: dude, outsource it = less work =)
then i don't get the satisfaction of sitting back and watching it run
dareposte: Tell em to setup a IPCamera
it's just not the same when u don't set it up yourself
i'm sure you know
yeah, i know =)
i'd love to have one of those screw machines that spits out a part every 2 seconds
dareposte : how long does it take you to change the tool?
dareposte : I can't imagine it's -that- much time
Martyn: no it's not that long, but its annoying
True, it's kind of hard to batch things in a lathe
that's the magic of the mill.
and why I bothered to get the 4th axis rotary
I've been working on some gang tooling, but having a hard time figuring out a good strategy for it
i can make most of what i'd need with an OD/facing + spot drill + drill + tap + chamfer
but fitting 5 tools in there is a challenge, especially when the drills are so long
I always use screw machine length drills
dareposte: gatlin gun
cradek: those are better but they still sort of are longer than the turning and facing tools tend to be
if you get the split point 135s sometimes a spot drill isn't even needed if the drill is centered correctly
i've seen one set up that used a boring bar for the od and facing tool
and if the drill was mounted in the back t-slot and the boring bar in the front one, then it might fit with a short drill
I've done that - but be careful if using a screw-on chuck
but still then the parting tool can't fit on the back side all that well
my chuck is thread-on, but it has a clamping screw that is alarmingly small
for short parts, why not start with a mill and mount a chuck onto the spindle
then you can clamp all sorts of tools to the table
sort of screws up the bar-feeder
you can still feed vertically
in a mill?
equip the chuck with a controlled release
line it over a suitable block and let gravity feed
i don't think the spindle has a hole all the way through it
most mills don't have a very big hole thru the spindle
and there's usually a drawbar blocking it
i usually get a 4' section of bar and then the last tool change is the parting tool, and just feed the bar till it touches and chuck it up and let it go again
get rid of the drawbar
this depends on the diameter of the barstock you want to deal with
my mill has like a 1/2" hole where the drawbar goes maybe
novel idea though if you are using part blanks it might work out pretty well
i've seen some of those mini chucks that can be chucked in an R8 collet and hold up to a couple inches OD
what size barstock?
3/4" usually actually
sometimes some 5/8 hex or 1/2"
mostly that's the machine's limitation though, i have a dinky one at the moment
i'd like to be able to do parts up to 1.5" finished od on the one i'm hunting for
I think those import mills might pass 3/4"
Hmmm sounds expensive
yeah it will be a bit pricey
i keep wanting to get an old 16x40 and convert it, but the lack of a tool changer keeps killing those plans
by the time i price out a tool changer to add to it, then it's already well into the price range of a normal turning center
i wish theyd show some od relief of the drawbar-collet http://www.tormach.com/Flash/TTS_small.gif
actually they show quite a bit of interference (outside end edge of drawtube to end groove on toolholder shoulder )
that's a drawing thing
an explain thing
the collet nose is definitely smaller than the ID of the raised ring on the toolholder
the OD of the toolholder is 1.5"
guessing the ID is 1.3 ish
R8 collet nose is 1.25
cool, i figgered it really would work, i just had to ignore what i saw
if I didn't have a cat on my lap I'd measure the ID ;-)
so you got ATC on that shoptask? or a powe draw bar for now
wrench on drawbar, hands on toolholder
I can do about 30 seconds chip-to-chip when I'm on a roll
cool, nice holders
jmkasunich: those sure are good prices on angle plates, thanks
now I play the game called "what else will I remember I need from enco right after placing the order"
I hate that game
what's the current min. order for enco to qualify for free shipping?
free shipping alleviates it somewhat
"the right shipping address"
Hmmm I am 1/4 of the way tehre with replacement drill bits
cradek: unless first order was $26, and the item you forgot was $2
jmkasunich: that drill chuck I got is a current model, so I can get the real jacobs key for $4 (none of mine seem to fit right)
it was a good deal: new price is > $100
what drill chuck?
oh maybe you didn't see it - a jacobs ball bearing chuck
seems in perfect shape, but a little gummy
for the lathe - to replace a $5 chinese one I have on there now that doesn't really seem to grip anything
can't use an albrecht because I want to be able to run taps in it
what size chuck?
and does it already have the right arbor?
small to 3/8, JT2
no, but I had one
well, I had the makings of one
what does the HNC want? straight shank?
yeah the boring tool holder is 5/8 so I cut off a 5/8 straight shank arbor and grind flats for the set screws
the two-bolt boring bar holder has a lip that sits over the edge of the turret so it's very strong that way
I wish there was Free FEA software that you don't have to be an FEA expert to use
I doubt there's any, free or nonfree
I'm trying to calculate the deflection of an T, given that the ends of the crossarm are supported, and the load is applied sideways to the bottom of the upright
upright and crossbar are both hollow rectangles
I don't have the slightest idea how to do that, but I know exactly who I'd ask (coworker)
oh, thats right - you work for a company that specializes in that kind of thing
I found this: http://www.aps.anl.gov/APS_Engineering_Support_Division/Mechanical_Operations_and_Maintenance/Calculators/ElasticBeam2.html
break the problem into two parts
the upright, treated as a cantilever loaded at the end
and the crossarm, treated as supported at both ends with a moment in the middle
don't you nearly have case 64?
but the calculator doesn't compute the angle at the middle in the latter case, only the angles at the ends
yes, case 64 is the crossarm calc
oh linear deflection of the base of the T is what you want?
yeah I can see how it's "just" those two problems
but I want to know the angle of deflection at the midpoint (because that angle times the length of the upright gives deflection at the end of the upright)
actually its three, because the shape isn't really a T
the crossarm is on one plane, and the upright is on another plane
so the (short) segment that connects them is loaded in torsion by the moment, and contributes its own deflection
that is a fairly straightforward calc tho
I'm sure the sum of the three simplified calculations is not the right answer, but I hope its close
FEA would give a much better answer though (including other deflections that I'm probably overlooking, such as out-of-plane ones)
[04:55:33] <tomp> http://www.caelinux.com/CMS/
open src linux based live cd with fea
tomp: I've looked at Salome and Code Aster
my head started spinning
there is a really steep learning curve
can't just say "here is my shape, here is my maternal, here are my forces, show me the deflection"
I see there are some tutorials - but yeah I bet you'd have to spend a couple full days on it
alternative: build a thing, and push on it ;)
the calcs are to tell me how big/heavy to build the thing
hm, it's going to feel unusual to go to work tomorrow. I wonder what awaits me.
also, maybe I should go to bed. goodnight folks.
that sounds like a good plan
the lower the inductance in a stepper the faster i can move it right =?
so parallel would be better then serial connection for a unipolar motor to run it in bipolar mode?
so what do people think is better
encoders on motors that are direct drive to ballscrews
or linear scale measurement doohickys that are accurate to 0.001mm
DRO type things
Valen i spose it depends on what backlash u have in the ballnuts
0 backlash ballnuts we will be getting
certainly i think a lot of CNC's use encoders directly on the back of the motors
so thats probably a tried and tested method
what i'm thinking is "low" accuracy ballscrews are waaaay cheaper than high accuracy ones
and if i have the scale on the mill bed itself then that "low" accuracy matters very little
wont the table wobble around when u take a cut, if there is slop in the ballnut assy's ?
no slop they just arent as accurate in terms of "turns per inch"
they are out by a few 0.00somethings of a mm
over 300mm or so
if you use scales then you need the ones with quadrature out so you know direction etc
yeah i was presuming that that would be the typical sort of scale a DRO would have
think it might be a cheap way of getting better accuracy?
oh yeah has anybody done a voice coil mill before? but a big one
well say 500 mm travel
voice coil ?
how high accuracy can you get with IR or something for distance measurement ?
24bit ADC and a resistance wire that goes from the motor to a thingie on the table, so when it moves it wil englongate the wire, making the resitance greater .. voila :)
then just read the value and you have a stepper with feedback ;)
yay, less than a month to fest in wichita
we need a cnc fest in the UK
that's only allowed if you find a way to pay me to come
only if you pay me to come to wichita
pjm__, at midlands model engineer ex?
it would be a good idea certainly
I was told there were some spare slots in the conference room /me not followed up though
Valen: see link
both what though?
both encoder and scale
I didn't think EMC knew how to integrate the two?
was that you cradek?
any idea why it oscilated?
backlash in the screw
ahh yeah that'll kill it
but if you had 0 backlash could you see it working?
0 backlash ? unpossible!
's called preload ;-P
where 0 means "really really rather small"
yeah I also question whether such a system exists
yes I've seen "really rather small" but not zero
you still have other effects, such as sticktion, that work against you just like backlash
where is the backlash introduced in a spring preload system?
yeah, but they should be really second order though
'when your encoder/etc precision is lower than the backlash amplitude' is really the situation you're describing
that's basically what i was talking about yes
IE you are probably going to see more "backlash" in the deflection of the table rather than actual movement
Welll.. throw away LSB's in the datastream from the encoders until the oscillation stops ? ;)
problem is the motor starts spinning up then overshoots
oscilation would be defined by a relationship between motor power, inertia and backlash before reaching encoder movement
If the motor can build up enough momentum to cause a correction that drives the system back into the backlash then it will oscilate
So on to dreamland
I was thinking about a voice coil based mill
use some smegging large soilenoids to drive the table around
True; but when it reaches the encoder, the encoder starts compensating. Ofcourse, fixing the overshoot/backlash in the first place is the right solution. But , if you've fixed everything you CAN fix on that side, decreasing encoder sensitivity (or integrate a smart dampening algorithm) might be as much as you can hope for.
decreasing the sensitivity wont actually help though
stability in feedback systems is well documented in control theory books
true but we don't know it so we can talk about it at length ;->
I still like my solenoid based milling machine
thats 0 backlash
and pretty good in terms of high speed traverse ;->
you still have mass ans resonance
didn't say it was perfect
the other problem it has is the inductance of the coil gives it "inertia" in force rather than velocity
so a sudden unloading will cause a "spring" effect
still it'd give a nice smooth cut ;->
hrm using scales opens up the posibility of using hydraulics for the servos, probably not as accurate though :-<
hydraulic servos used to be state of the art.
the worked pretty well
hydraulics stink unless you need a lot of force
if I have to touch hydraulic oil again, it will be too soon
yeah I bet there are reasons we have electric servos now. I have never worked on a hydraulic machine.
[13:58:54] <skunkworks> http://www.electronicsam.com/images/KandT/conversion/hyservo.JPG
there is a drybolic downstairs
[14:00:19] <archivist> http://www.archivist.info/cnc/works2008/P1010203.JPG
Those stalled at 75ft-lbs.
nice tub with oil beneath, there..
Valen1 is now known as Valen
i've got a syil X5/BF20 cnc mill with their controller (called superbox or sbox3) here and cannot get it to 'move'
any data about the controller online that you can point us to?
we have set up 8.04 with rtai kernel and got the emergency stop working on the parport and we think we found the pinout, we just cannot get a yellow 'link' led to light up.
cradek sadly no.. if i had i propably wouldnt ask
i just hoped somebody knows their stuff already and just the config never found its way into the repo or so
[16:27:25] <roh> http://syil.com.cn/en/
is the manuf.
they got some mach3 config xml files, but i couldnt find out any timings to use in stepconf
can it be my controller needs some kind of 'general enable' ?
[16:29:13] <skunkworks> http://cnczone.com/forums/showthread.php?t=35576&highlight=syil+emc2
ok, if it works with mach3 it must be step/direction. that tells you something.
message 3 has pinout I think
skunkworks is good at finding things.
[16:31:34] <roh> http://www.cnczone.com/forums/showthread.php?t=47448
has the pinout.. i am fairly sure i got a correct one (compared it with the mach3-xml config)
also the syil.com.cn has a .doc for download which contains the pinout and some photos of the controller.. just no proper info
what specifically are you trying to figure out right now? just the timings?
inside the syil contoller box there is basically this kit: http://goods.ruten.com.tw/item/show?11061228859194
and 2 smpsu for 48V
cradek the timings and how to 'enable' my controller (get the yellow led for 'link' lit)
sounds like the enable is the most critical - wonder what "signal 1" and "signal 2" are in that pinout list
should the motor do anything when the timings are wrong?
cradek pin 3 is flood (signal 1) and signal 2 (pin 9) seems not to do anything
I think signal 1 and 2 are general purpose
pin3 says 'A Axis pulse' (step?) on this pinout
jap. the boards are prepared for 4 axis
just no stepper driver connected to the board
do you have any software that makes it work?
if so, it ought to be very simple to see what it does to enable
take a look at the goods.ruten.com.tw link.. it has pictures of the pcbs/parts of the content
cradek we have a win32 notebook with mach3. i just hoped there is something simpler than using mach3 and tapping the parport with an oscilloscope
can't extract any meaning from this page - can't read the driver chip numbers
I'll get one of the chinese grad students to translate if that would help
if you can figure out the driver chips, you might find timing info for them online. but RC filters or optos will change the timings.
does the relay switch on?
I'm pretty sure there are no optos, but may be RC filters on the inputs
I bet the enable is pin 9. all the other parport outputs are accounted for, and are not the enable
it might need to be low or high, or it might be a charge pump
the mach config should verify that theory somehow
if your other software makes it enable, and you have a scope, you can have the information in 10 minutes
or even a voltimeter
yes, or maybe you can decipher the mach configuration directly.
Safety Charge pump?
pastebin the mach config
There is a jumper on the control board to disable the charge pump. I'll bet if you change it, it will start working.
ow reading that cnczone thread is depressing
so there is a charge pump?
cradek i tried high and low and also chargepump...
not even the manufacturer representative can give useful information
On page 57 of the manual it shows the charge pump jumper.
It is located next to the X home terminals.
jepler, which one, the general syil thread? or emc specific?
geo01005: where did you get this? I didn't see a link.
eric_unterhausen: this one: http://www.cnczone.com/forums/showthread.php?t=47448
[16:47:51] <geo01005> http://www.syil.com.cn/tem/BF20.doc
page 57 when I open it with word 2007.
And its runnign at 45kHz.... I wonder what it was that made the difference...
how do you get word 2007 to run on linux? :)
"I fixed it, I have no idea how" is so useful.
this says pin 9 is in fact a charge pump http://www.cnczone.com/forums/showpost.php?p=372234&postcount=40
controlling the spindle with a controller is one of the most fundamental and conveniet differences that separate our product from the commpetition. Not only does it allow you to select the RPM of your spindle but also the direction and on / off.
[16:50:13] <jepler> http://www.syilamerica.com/docs/The%20black%20magic%20of%20G.pdf
have you ever done anything .. high tech?
jepler the bf20 doesnt have spindle control afaik
roh: I guess that product isn't separate from the competition, then
atleast there is no connection between the controller and the spindle-control
jepler 'it was cheap'
cradek if i configure pin9 to chargepump in stepconf... which frequency will emc2 generate there or how to config it?
there is something to be said for cheap
you can easily get the base rate or the servo rate -- with a tiny bit more work you can get any other rate you need
roh: half as fast as your top step speed, but at least 5kHz
Much more to be said about low cost, high quality.
``LINK: ... when the "RESET" button is unflickering, the LED will light.''
seems like this means the charge pump makes LINK light up
"13. Potemtiometer: adjust current which thought charge pump to make the charge pump work well."
maybe it does need a specific (unnamed) frequency
but geo01005 is right - with jumper 12 you can "open" or "close" the charge pump
cradek if i understand that right, this link via chargepump is intended to make sure the motors dont do anything if there is no app running, correct?
yup yup will power down of the application crashes or is stopped
ok.. then i have a reason figuring it out
nah.. will build a subd25 male female with some taps to hook a dso onto mach3 and just see how the timings are
hm. i configured pin9 as chargepump but on the dso i do not get a continous signal on it
neither in stepconf wizard while testing an axis nor in emc2
can you pastebin the generated hal file please
i am using emc2 2.3.0
mompls.. need to usbstick them around.. the emc kernel sadly has no rt2500 wifi
may as well grab the whole config including the stepconf file then
[18:42:31] <roh> http://yamato.hyte.de/tmp/syil_bf20/
roh: sure looks ok at first glance
net estop-out charge-pump.enable iocontrol.0.user-enable-out
shoudl come on when you come out of estop, according to this
tj-j is now known as clip9
hm.. need a smoke... will check how mach3 really does things and then compare
alo try with external estop input disabled (set to unused) in stepconf.
jepler estop works fine... after negating it
roh: you should be getting a charge pump output when not in estop. jepler is trying to help you debug that. the other thing you should do is examine the charge-pump.enable pin with halmeter and be sure that it turns on.
good evening at all.alex please you can help me for python example for reload tab file'.I load the example in Idle and run it but have the error for import the emc module.i don't see the emc.py module.
motioncontrol: ". scripts/emc-environment" for the python emc module to be available.
it is lib/python/emc.so in run-in-place systems
jepler emc.so is shared library?
normaly python code terminal with .py
some python modules have the "so" extension.
it is not python source code, it is object code
$ python -c 'import emc; print "all is OK"'
ImportError: No module named emc
$ . scripts/emc-environment
ok.. mach3 generates a 8.8kHz 50:50 signal on pin9
$ python -c 'import emc; print "all is OK"'
all is OK
clean ttl levels
Hi everybody, I'm looking into buying a commercial CNC mill and i've been looking at this one: http://www.bzt-cnc.com/product_info.php/info/p269_BZT-PF750-P-Set-incl--Control-and-Ball-Bearing-Spindles-Motors-4.html
And i'm wondering if i can use emc with it.
bzt recomends WinPC-NC though.
there is not enough information on that page to determine whether it will work with emc
quite possibly, but you should ask the manufacturer for real technical data about what signals it requires at the parallel port.
your best course of action before they have your money is to be clear that you require this information to purchase it.
just ask roh :-)
yeah. I've sent a mail asking for a real datasheet.
this document shows what information emc will require when doing the basic setup of the machine: http://linuxcnc.org/docs/html/config_stepconf.html
looks like a stepper machine -- one thing you could do is go through stepconf and make sure you know all the things it asks.
some of it is about your PC, but most of it is about the machine to be controlled
um, yeah, like jepler also says :-)
ok thanks. I'll get back to you ;)
great, good luck
hm.. how do i get the hal to generate 8.8 khz?
roh: what are you getting now?
or nothing at all
5 ~= 8.8
(I generated ini and hal from the earlier-linked stepconf file and after I forced estop-ext TRUE I get a 5kHz charge-pump signal according to halscope.)
(actually, I guess I get that even without forcing estop-ext TRUE)
cradek constant '1' aka 5V
are you running emc, or running "test axis"?
what did you see when you examined charge-pump.enable with halmeter?
in test axis i must note that the 'unused' outputs behave differently than in emc
in test axis they honor invert to define the 'default' state even if marked 'unused' .. in emc they have the other logic state
In the menu, choose Machine > Hal meter. In the window that pops up, scroll down to "charge-pump.enable" and double-click it
then i get a dialog which says its false
how can i change it?
click the top left icon in AXIS. That's the estop button.
does what it should, but not toggle that state or make it generate any frequency
when I start, it is FALSE and when I click the estop icon it changes to TRUE
the 'powerbutton' directly right from the emergency stop, topmost left
enables manual control and the 'R' and 'T' controls
your external estop input is always TRUE
or, at least, it's TRUE when you start emc, so emc starts in "machine off" mode, not "eop"
even if you click estop, the user-enable-out never gets set TRUE so the charge pump never turns on
net estop-ext => charge-pump.enable
you could try these two lines in your custom.hal file
this would enable the charge pump whenever the external estop is OK. in that case, you'd never use the GUI estop button, always the machine's physical estop button
what is the problem linking it correctly?
i havent fully entangled it.. but my estop is inverted also
like most of the outputs it seems
not sure about dir yet
dir of HAL pins?
uh.. hm.. got it 'unlocked' by locking it on all buttons and then unlocking
aaaaaah. now i got it reproducible
whenever i hit the estop in the ui the link goes off
to enable it i need to press estop on the hw(!) then press estop in sw again and then release the hw estop. then i can 'power on' again and the link led goes on.
roh: sounds like you need to put it on paper
yeah. the stepper do 'something' ... thats progress :))
* roh leaves it there for today.., enough exitement.. tomorrow i need to figure out how many of which steps my steppers do and how many mm the spindles are per turn
sounds like your making progress
.oO(and use the dso to get a idea of how the timing of the stepper is done there
put off slepp play and enjoy :)
i secured the 'way to get the yellow led on' in our internal hackspace blog... we'll see.. eventually we come around making some stuff public (needs some custom trac-plugin)
roh: take small steps, and you'll get there
thanks guys.. see you tomorrow ;)
* BJT-Work takes the long way home... :)
bike a gain!
see you guys later
hello alex i hev the problem for the reloadtable.py i use the the idle python , and have the error for import the emc file.i have write jepler help but not ok
ok fuction good , the proble is i don't have start emc and have error shmctl : invalid argument .
after start emc is ok
more thanks at jepler and alex for support and help
good night at all
I'm logging. I don't understand 'chump', JymmmEMC. Try /msg logger_emc help
logger_emc: chump A
Is there anyone working on getting EMC to support a SPI for the Mesa Electronics FPGA cards?
I have done a little bit on that.
I'll check it out. Thanks geo01005.
seb_kuzminsky said he might get a chance to add some formal support at the fest.
Mesa has a card that would be ideal for my toolchanger. It speaks parallel, USB, or SPI.
Ah- I belive that's the gentleman who also knows about watchdogs.