somebody needs to tell jon about the "net" command :)
at stuart's I tried to figure out the interaction between the ppmc estop hardware and the strange estop latch setup with 'and' gate he has in there - I still have no clue
I didn't care for the way his estop chain worked, but ran out of time before I was able to figure out enough to "fix" it
I don't know if he ever added the estop input as a normal bit into HAL
but his hardware stops when a fault comes in on input 15
(which is a good thing)
it used to be that you couldn't see the state of that input bit though
and may still be
what it realy needed was some documentation... it was really glossed over in the manual stuart had
yep. like many of us, Jon's strong point is not his documentation
yeah, it's a curse.
the nice thing about open source is that the code is automatically documented (in C) :)
unfortunately, sometimes it's documented in tcl
yeah, unfortunately that doesn't apply to the ppmc estop hardware...
err - right
ok, it looks as though he did make the estop input available to HAL - that's a good thing
how do iocontrol.user-request-enable and iocontrol.user-enable-out work?
yes that's the $1000 question
isn't user-request-enable essentially the state of the "machine on" button in the GUI?
no I don't think that's exactly right
ie, when you click it, the user-request-enable HAL pin turns on
or it's a one-shot from that action (F2 / button press)
they don't quite follow one another
yeah something like that
I thought I had a grasp a while back but I forget the details.
I just drew a diagram of the estop stuff from Jon, and it would make sense if I knew what the motion controller pins do
if you figure that out [insert plea for wiki documentation here]
or the real documentation
[04:18:09] <SWPadnos> http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?action=browse&id=Sample_HAL_And_ClassicLadder&revision=21
apparently, the user-request-enable is a "short duration output" when emc-enable-out goes true
somewhere I saw one of those hooked to a oneshot to get a pulse for latching some ladder rung
that may have been before user-request-enable was added
also, ladder has edge switches now
that was only done in the last year or so I think - partly for halui
the complexity with the USC is that the hardware has something like the estop-latch in it
when you set DOUT7 true, that resets the hardware estop for "a little while"
if the estop input (DIN-15) is not asserted within that time, then the USC stays active. if the estop is asserted, then DOUT7 turns off, and the unit remains in estop
at least that's how I think it works
ok. it's bedtime for me. have fun making chips fly 8 feet :)
in the old days (haha) we had some weekend-long pushes to get ready for a big release. I wonder if we still have that in us
(I guess I should only speak for myself...)
I am hoping to get the 7kva transformer hooked up..
what's that for?
remember the K&T project?
It will be running the servo drives
should come out to around 150v
be careful - sounds like scary work
snap crackle pop
cradek: I think we might have it in us
(but for a limited number of releases :D)
skunkworks: my servo amps are 100V 14A continuous, 30A peak, how much transformer do you think I need to run them on single phase 220?
at least 4000 VA I think
alex_joni: ah it says in the manual they had a 4KW transformer
(for single phase operation)
the 3 phase is 6KW
sounds about right :D
that's one heavy transformer
any thoughts on where I should look for one?
* alex_joni exchanged a couple of those
cradek: I have a 3-phase 380 -> 380 (about 4-5kW) one
it also outputs 220V
but it's probably way too heavy for shipping to the US :)
alex_joni: I have a 3 phase that's fine, but I want to run it on single phase instead
so you need a 70v - correct?
skunkworks: yes 220 in, 70 out
probably I should get new (modern) diodes and caps too
the peak currents (and ripple) will be higher
220 in <- isn't that 3phase over there?
a normal house has two phases of 120 for normal stuff, and you use both to get 220-240 for things like the clothes dryer and electric oven
alex_joni: yes and no. normal house feed is 220 single phase
we have 220 3phase at the shop
I can't get 3 phase without paying for a mile or two of wire to be installed :-)
hmmm - wonder if this would work.. http://surpluscenter.com/item.asp?UID=2007100509325291&item=15-1161&catname=
if it would do a divide by 4 :)
if you could wire the primary for 440 and hook in 220
you would get around 60v
I think a 4kva transformer is going to weigh about that :)
wonder if it has taps to adjust the output, that's 85 which is a little low
either that or buy a buck boost transformer ;)
it says the DC bus should be 90-100
that's a pretty small target to hit
haha, it also says the polarity should be correct
"The single phase designs have a 144VAC center-tapped secondary, and a dual primary of 120VAC."
yeah guess so
72 sqrt 2 = 102
when I was a kid - I would take transformers apart and wire them for what I wanted...
I've done that too
but I could never get the laminates to not buzz afterward
sounds like your drives are louder... :)
they make quite a racket
manual says undervoltage dropout is 55, overvoltage is 122
that's a lot more comforting than the 90-100 thing
[15:01:54] <skunkworks> http://cgi.ebay.com/SCR-Drive-Electrical-Transformer-DT661H11S-11-KVA-GS_W0QQitemZ260166957397QQihZ016QQcategoryZ4665QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
oops - 3 phase. I keep forgetting
bummer. DHL tried to deliver my new laptop at 9:10 this morning
while I was asleep :(
[15:51:07] <cradek> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=150167653275
that will cost a lot to ship
yeah I think the voltage is too high anyway
I saw that one. 100v unless you could sneek some of the windings out'
there are a lot more choices at 3kva. I wonder if that would be enough for me.
it would be more than 100V probably, because the primarry is labeled at 208V, not 240V
right, way too high
remember also that the secondary current limit will the the constraint if you want to use a 440 primary transformer
so you'll get half the rated power our
I made that mistake before I really thought about it, which is why I have a big-ish transformer I can't really use (at least not on the mill :) )
uh, what is it? :-)
2kva, 220/440 -> 120
or 240/480, don't remember
but you'd only get 1kva out of it
ok, way too small
maybe this will be hard to find
(also, it's working the way it is...)
what kva rating are you looking for?
fed from 220-ish?
220ish to 72
I think your going to have to wind your own.
not much - trying to make it thru friday
it's gone here :)
nothing interesting at the other end I can assure you
we are kinda half way thru so far.
alex_joni: have you heard anymore about the hexipod?
was it a university?
ah, that one.. in spain
[17:36:09] <alex_joni> http://www.imac.unavarra.es/parallel/imagenes.php
* skunkworks wonders how much rotation you get from that.. (abc)
are the constraints separate? like how does it know that cannot go a certian direction
or the model knows?
homing is tricky though
I can only imagine
woohoo! they did a re-delivery, so I have my new laptop now!
now all I need to do is wait another 4 hours or so for the Gutsy DVD to finish downloading
ya have to love "format c:" for removing the windows virus!
SWPadnos: your math is wrong
33333/3000=11.1 or 666ipm
SWPadnos: what kind of laptop?
skunkworks, yeah - whichever :)
alex_joni, from M-Tech, it's a rebranded clevo
[18:20:59] <SWPadnos> http://www.mtechlaptops.com/specifications/mtechm570a.html
skunkworks: feel free to fix his mail
I (heart) my 15.4" WUXGA laptop display
jepler: this is 17"
so WUXGA might be readable :P
yeah I see that -- I don't think I personally want a 17" laptop
my WSXGA 15.4" is perfect for my habits
it's big and bulky, but hey - it works :)
wsxga+ I mean
SWPadnos: works for what?
err - memtest at the moment :)
do you plan to carry it around?
not too much, but I do use laptops on airplanes and while traveling a lot
but I leave it in the room when I go out to do stuff
SWPadnos: cool laptop.
now why am I downloading the DVD, when I could be getting a CD instead?
ummm - I don't know.
of course, it doesn't have a parallel port, even though the website says it does
but there is a serial port
dunno. I found the cdimages.ubuntu.com/wherever link, and all I saw was DVDs
upon further searching, I have found CD images
* cradek hugs his non-widescreen laptop that has parallel, serial, PCMCIA, and PS2 ports
* SWPadnos hugs his laptop with 1920x1200 screen, dual-core 2.2GHz CPU (4M cache), 2G RAM, 80G HD, and DVD recorder
heh - I don't have serial on my dell - but 1024X768 is getting to be a bit on the small side.
* cradek laughs at SWPadnos's 42 minutes of battery life :-)
oh, and don't forget the 512M nvidia 8700M graphics card :)
I shuld get at least twice that!
I get 3.5+ hours on my "desktop replacement" with two newish batteries
it was funny - I called the company to ask about battery life, and the guy said I should get "around an hour and a half"
that means 42 minutes doesn't it
(I was joking)
which I thought was funny, considering that my older laptop (p3-1GHz, 512M) gets around 3.5 hours
I wasn't - I should get around twice that ;)
one nice thing about this one vs. my old one is that the power input is just 20V/6A, with a standard DC barrel plug
I got "someone subscribed this address to our [porn site's] mailing list. reply if you really meant it" the other day
well guess what, I didn't reply, and I'm subscribed anyway
the older one had a proprietary 4-pin plug
oh those non-barrels suck
I may even be able to make a DC-DC converter that works with airplane power
actually, the porn looks pretty decent
but ... that's just wrong
is that an oxymoron?
I doubt it
if there can be "terrible porn" there should also be "decent porn"
and I'm entirely sure there's terrible porn
but what I really wonder is whether I should 'unsubscribe' thereby validating my email address as 'live'
I'm pretty sure the answer has got to be no
that's a tough one
well - we had a lady here replying to all those 'unsubscibe' links and I think she ended up getting hundreds of junk emails a day.
cradek: new rule to reply no such user?
SWPadnos: in the old days laptops could run on car/airplane power by buying a different convertor thing - I haven't seen those lately and I miss them
skunkworks: I already get many hundreds :-)
* skunkworks too
I have various converters: an empower to car adapter, then a car inverter
* alex_joni doesn't count them
SWPadnos: now it seems like they think you should use a 110v inverter + your wall wart
but that's a lot of wires to have hanging arounf
SWPadnos: how much for the laptop?
$2130, including 2-day shipping
that's about $400 less than my old one was
that's about 400% what I've ever spent on a laptop :-)
and 4x the laptop, in all cases except for screen size/resolution, weight, and battery life
sounds ok to me
I spent a grand in 02.. (probably the best money I spent :))
yeah it's probably to be expected :-)
I got my thinkpad desktop replacement (and I use it that way) for $500 and I'm still tickled with it
my current laptop was 1400 eur ~ 1800$
I only wish it had a pad, instead of a nipple
I even have TPM!!!
my first portable was a toshiba with a nipple. It took me a bit to get used to the pad
and wifi (A/B/G/N)/bluetooth/"Robson flash memory", etc.
though the robson thing isn't working, it seems
is TPM those reports you're supplosed to turn in with the cover sheet?
no, those are TPS
the guy from office space is from here.
He is the brother to one of the local news casters
my wife still gets a chuckle from the sex scene "um, yeah. I'm going to have to ask you to move a little to the left. Yeah, thanks" :)
with the oversize coffee mug in hand :)
SWPadnos: wth do you do with tpm?
(so do I -chuckle that is)
I do nothing
but I might be able to do something later on - who knows
* alex_joni hasn't enabled it yet
yeah. I'm not sure I will. I'm planning on using Ubuntu on this machine (though I guess I could install XP64 on it)
[18:59:33] <skunkworks> http://movies.yahoo.com/movie/contributor/1800018742
^ sister http://www.wkbt.com/Global/story.asp?S=1649887
ok - another thing that I have wrong. the sister works here - didn't grow up here.
I think I have developed a whole other reality in my head
I think you need to keep working on it. it seems inconsistent ;)
well - the asian beatles have arrived again.
along with the boxelder bugs
and immerdiately they disabled his connection
chris... when working on threading, did you find a good reference to use for setting threading params? machinery handbook?
do you mean when writing gcode to cut a thread?
yes that's what I use
but mostly just to get the major diameter
pitch is easy, but thread depth and major dia seem to have a big range
wonder if you found any web threading wizards or similar
no unfortunately I didn't
ok... a new feature idea
the major discovery I made is that the thread depth (from sharp peaks) is pitch / sqrt(3)
is that right?
pitch * sqrt(3) / 2
or something like that
whatever that 30-60-90 triangle gives you
assuming a 60 degree thread
yeah yours is right
* cradek goes back to high school
sqrt(3), 1/2 are the sin and cos of 30-60-90
cool... so major dia and the depth calc should be what I need...
in emc, K is going to be this number (pitch * .866)
J is first pass depth
I is the incremental to the major diameter from the book
good night all
see you later Alex