sxpert: you like wireless?
wireless ? as in wifi ?
as in 802.11x
wwell, I'm working with it...
nice.. may I ask what?
it's a tool. I use it when it makes sense
link between the carpc and the home networl
as in car-pc...
I figured that...
for details ;D
care to explain?
that's your page/software?
* alex_joni bows ;)
I run it on an EPIA MII 12000 in the car.
EPIA MII ?
sounds like an sbc...
not sure though...
it is... http://linitx.com/product_info.php?cPath=12_41&products_id=414
the price is on the page... 150 UKP tax included
are you running from CF or HDD?
40G laptop HDD.
2.5'' i guess
not passive cooled... right?
need space to store all those ogg.
no,there's a fan, but when you dump the thing in the trunk, you can't hear anything
yeah.. I'm not worried about noise
the power supply is a fanless DC/DC converter
I like fanless... you don't get surprises
when fans brake down
it's much more efficient than using a 12->230v then a normal atx PSU
the motherboard only has one fan, on top of the processor. you can also get fanless versions, but they're not as powerful...
so the trick is to figure out a path for the air to go through all the things on the pc...
surely not 1.2 Gigs
I've seen 800MHz fanless
yeah, that one has a fan
I have an older sbc right now.. an Geode GX1-fanless
some german company sells that motherboard in a fanless case, using heat tubes connected to the aluminium case
using a soekris as a router here
* sxpert goes back to his home cinema...
* alex_joni prods paul_c
have you ever heard about monty?
[01:25:57] <alex_joni> http://www.jibble.org/montyquotes.php
we should get one...
I think not...
i was kidding ;)
sxpert: I hate to ask a dumb question but where do the map data come from? Is the data free?
map data for ?
well I got emc2 to sort-of run my stepper machine last night
I loved how I could configure the parallel port pins in the hal config file
it does not run the machine smoothly though
don't know if it's my configuration, emc2, or rtlinux problems
Is EMC smooth & stable on the same hardware ?
hmmm... define smoothly
yes emc1 works great
smooth: "a stepper makes a continuous tone when jogging"
not smooth: "the stepper sounds like it has rocks in it" (I assume the step pulses are not equally spaced)
what mod are you running?
standard emc2 from cvs? (then it's stepgen)
it is EMCMOT=motmod.o
it's the only one that seemed to work
unfortunately the machine is off so I can't get to it
(that was teh default in the emc.ini)
motmod is clear
what's "clear" mean?
well.. I meant motmod is supposed to be
I did play a little with freqgen and stepgen directly (with hal)
and figured out how to tune my axis
and after that I set up emc2
ferel is now known as erDiZz
I'm all in deep thoughts, men..
it's about my (small) project.. I'm writing a CNC
.. i.e., its software part, I did it for free until now, though there were people who was interested in the projiect
For serveo or stepper ?
in fact, I'm not so advanced in NC
Linux or Doze ?
Right answer ;)
paul_c: pathed by myself (no RTL, no RTAI)
well, to tell it quick, since last week I'm alone with my program
it almost works (it does all I want it to do, though it's not yet enogh to machine a part)
the main trouble is that I have no access to any real machine:| oh how could I hope it works if it's been tested only virtually
* paul_c needs to get the Sherline plugged in again...
paul_c: you use EMC, don't you?
A little bit
* alex_joni is laughing...
paul_c: how do you use it?
not quite sure what you mean...
in fact, I'd like to ask, what is EMC capable of and what are its limitations
EMC can control up to six axis
either a conventional mill, a Stewart platform, or Scara type
There are some routines to handle other types of parallel kinimatics...
The ability to control servos as well as steppers is one advantage
really, I know nothing about servos
it's not my speciality so I study the subject by demand..
sounds pretty sad..
well, what about connection to the outside?
there are some words about parallel port and I've seen discussions about ather ways here?
You can use parallel ports, or dedicated IO cards
paul_c: is there a good GUI
'pends what you mean by "good"
well, where I can see the progress of machining (graphically)
well there are several ... guis
There are several GUI interfaces written in Tcl/Tk and also C/C++
even an ncurses based interface if you don't want to use X
paul_c: how do they interact with 'the core'?
('the core' is what I call all that's not an interface)
That depends on what you call the core
there is the realtime code at the heart of EMC
ehm, lets say, if I want to write a new interface, what should I do?
then there is the task controller that runs in user space
hm.. what I did is a CORBA objects at both sides
in C/C++ ?
though, it all depends in the ORB - I've chosen omniORB and it's only for C++
another ORB - other langauges
CORBA is not of much use with EMC
unless you want to re-impliment the message passing library
btw, how wide is EMC used?
say, in controlled machines
difficult to say...
there are users right round the world
and the forward question is about EMC2.. does it worth to wait for it to hack in?
if I'm not mistaken, it was planned to be ready this autumn..
though I don't know how it really goes
There is no finish date for emc2
paul_c: does it at least work?
depends on what you mean by working...
probably, the right thing for me is to split it all into parts and release it under GPL or something
it is useable.. (stepper commands, and such)
IO isn't working yet (simio for now)
alex_joni: usable is quite enogh
oh, I've forgot:)
hmm I've read that EMC uses 100ns-intervals to control it
does it make any limits on its operation?
maybe some inconviniences?
well.. it has been for some time useable
(as I know, IRQ-clean systems like RTAI have 50ns random latincy)
There is no way of getting 100nSec timings with (most) processors
paul_c: 100 microseconds
thing is... in emc there is a RT-thread that outputs commands to the parport
I have run the stepper task at 7.5uSec
well, ns = microseconds (I think you write it so, cus if I'd use russian symbols I'd write "mks")
and it depends on the processor how fast that is
what I did with the kernel is not usual
actually there are more threads...
at different speeds
I've freed the timer and let the kernel use RTC for scheduling
with a free timer we can get more frequencies than with a 100microsec intervals
but it isn't very difficult to write a emc2-driver in order to output pulses on something else than the parport (e.g. some PCI-IO)
well, it's easy in my case too
but in fact there's no one yet..
there was some info on G2002 if I remember it corectly... right paul?
that's a USB-device used for pulse-generation...
Not seen any details about the G2002
or some other device to do that... don't remember what it was ...
* alex_joni is trying to remember
one more question. rather important..
ehm don't know how to say:|
well, could it be enough just to take two steppers without the machine and debug on them?
do that at the end I can tell "It works"?
or it's nto enogh at all?
just the mtors would be enough to show if the base code works
.. so that I'd better go find somebody interested who can offer a particular application to all this
you could play with hal directly with the steppers (I did that)
paul_c: well, then I say "Base code works!" - if its open source, has it any future?
* alex_joni 's note: HAL is the hardware-core of emc2 (Hardware Abstraction Layer)
alex_joni: hal is not the case for me.. It relies on RTAI, isn't it?
RTAI or RTLinux
I'm going to make my kernel patch usable as well
"yet another real time alternative" - use mode interfaces are almost ready
I see... well maybe you can put rtapi on top of your RT-patch
in fact, they are ready but are not general enogh to meet any task
RTAPI makes it transparent to the code what lies underneath (rtai or rtlinux)
alex_joni: I thoght I'd use it exclusively but now think that there's too much noise about real time in linux and it worths publishing
erDiZz: I was thinking too about starting something from scratch...
ah again, it's too special.. I don't think RTAPI could be supported 'as is'
but then I found EMC... and I realised that there have been a LOT of time put into it
alex_joni: a _lot_, really?
some 7-8 years
by a lot of people
it started at NIST...
doesn't compare with 'one year of myself'
that's what I thought too...
you do get a better inside info if you write it yourself...
but... that doesn't mean it runs better ;)
the fact is that today it's time for me to decide: ah, I'll get to the end, ot to say "well, I've studied the linux kernel, distributed systems, some cool kits like GTK+ etc etc" and go do something not so high in the skies
One advantage of EMC - The various parts can be run on seperate computers
some of it will even run on a M$ box (like the GUI)
paul_c: it's implied if you speak about corba or smth
ferel is now known as _erDiZz
our hostel internet channel rocks
* alex_joni is gone...
... me ...
I've seen this
so soon? but Ionly just got here!
Good day gents.
Just got your email...
Alas, it's 11:45pm here, so I can't chat at the moment.
gnight... hope you're not too mad ;)
how are you?
* alex_joni just got back.. was away for a while...
Oh boy... Nearly dinner time.
dinner time rulez ;)
* alex_joni is waiting for his dinner time... usually around 7PM ;)
paul_c: say when back...
* paul_c is back