the config max5-triv.ini specifically says "does not provide proper multi-axis behavior.", does max5-kins.ini do so?
anyone got any advice on getting a gecko driver vs some other? I'm a bit budget conscious, so I'm looking for cheap+good. I've been using a MC433 controller from http://www.soc-machines.com/,
but it is very fiddly to get the output current set right and I've burned out the mosfets driving the motors.
I'm hoping to get something a little more robust
low budget like $40/axis or like $100/axis?
and how much is added quality (robustness) worth?
well, $300 USD for the G540 is pushing it, I'd prefer something cheaper
danpat: Well, how much are you spending in asprin and tequilia?
personally I'd say the G540 is the best thing out there for price/performance, but I don't use one every day
jymmm: not much yet, but I suspect it's about to start. Everything was working swimmingly until I ran test job that took 15 minutes to complete. That was too much for the MC433 board.
danpat: What are you using it on?
I've built a 3-axis router for woodwork, gantry style using 125oz NEMA23 steppers
danpat: Get the G540, you won't regret it.
I get the feeling that this is going to be one of those contiunous-upgrade projects :-P
for wood you need to move fast
having a powerful driver may be very important for your application
danpat: The thing is, with the G540, you can always use it on another project if you "upgrade" so to speak.
for metal work, it's about the speed of rapids - who cares - but for you, you need to cut fast
so you don't burn the work and dull your router bits
ah. well, no wood cuts yet, just foam
run your router along a piece of work and note how fast you naturally know to move it
oh ok, you said woodwork
yes, wood eventually
danpat: Teh G540 also has midband compensation, optically isolated, and has a built in breakout board.
jymmm: what's midband compensation?
danpat: Helps prevent the steppers from stalling
I bet you move a router 1-2 inches a second (60-120 ipm)
that's pretty darn fast for many stepper machines
in foam it should be even faster I bet
like 400 IPM or something
cradek: my rig needs a bit of rigidity work before I can more it too fast. unfortunately, I'm using cheapo threaded rod from Home Hardware and the whole thing shakes violently at certain resonant motor speeds (most of them fast)
That MC433 is a UNIPLOAR driver
yeah that's not ideal
but I'm surprised that it seems to be a chopper
the motors I have are 6 wire, I'd wire them in bipolar mode with the G540
Only has full and half stepping - ewww
I know where his vibration is coming from =)
danpat: G540 has 10 microstepping
the major vibration is not the motors, it's the slightly bent threaded rods bouncing around in the loosely mounted skateboard bearings :-P
until this point, the whole rig has cost about $200 to build, so I suppose it's about time I sunk some decent change into it
ugh. must reboot
Valen1 is now known as Valen
anyone in here that has bought something from cnc-plus.de? =)
hmm, I'm wondering why the fonts in pyvcp don't look the best.
no anti aliasing?
it will improve in a couple years when we are using the newer tk that is on ubuntu 9+
AXIS etc looks a lot better
so nothing to do about it without recompiling tk?
well I bet some fonts are less bad than others - you could experiment
I think you want to get it to use a traditional X bitmap font
Something like this? -*-Times-Bold-R-*--*-120-*-*-*-*-ISO8859-1
this is "10x20" which is a good old bitmap font
I found that listed in /usr/share/X11/fonts/75dpi/misc/fonts.alias
(beware I don't know exactly how you specify a font in pyvcp)
cradek, whats easier... using hal scope or a real scope... this is based on someone never using a scope ever..
as far as operating the knobs - if you know how to use one, the other will seem familiar
a real scope can't show you HAL internal signals, and HALscope can't show you things that happen too fast (or anything analog, without special hardware)
so they're for different things
true, I bet the "answer" to your question is "easier for what?" :-)
tuning my machine lol Basicly pid..
and adjusting the servo cards correctly as there older west amps I believe
SWPadnos, I know I know.... wait till I get home! lol
Does anyone know if Denatured alcohol leaves a/any toxic residue once evaporated?
Jymmm, alcohol is used in very fine scraping because a small amout is left behind
archivist: Not alcohol, Denatured Alcohol
swedish denaturated alcohol "called red ethanol" leaves nothing toxic behind
however the denaturating agent is extremely foul tasting
Yeah, and depending on what it is, it can be toxic
or make you vomit
I'd really just like to find some Food Grade Ethanol, but can't find any place locally
which was my point, it's hard to know what denaturating agent is used in your particular blend :)
everclear from Minnesota
LawrenceG: that would work, but lets try ozarks
95% ummmm gooood
I just bought a bottle.... had to import it from Alberta as they dont sell it in BC
SWPadnos, would you recomend doing this before or after messing with the machine? http://www.cmcsystems.com/techtips_westamp.html
Hey I found some... anyone have a 50,000 gallon tanker truck I could borrow to pick it up?
sorry, make that 28,500 gallons
I'll take a few gallons if you deliver
But I need a locomotive for that
(I'm not kidding) http://www.bigriverresources.com/ethanol.php
I better buy some coke shares... you are going to need a lot of mix!
LawrenceG: wth you talkin bout... this is to fill up the swimming pool!
you won't be needing any chlorine
Where is everybody? lately
some people actually have a live. (I don't)
Well, I doubt that.
back to work? =)
what - that I don't have a life - or that other people do?
That THEY have a life
I am a proper yound lad, im still doing cnc! doing my gantrybuild
Damn, you're the second person in 24h to expect me mocking them
'you're macking me - arn't you?' Buzz Lightyear
jepler: smack talk
boy - I have some problems.
whos blog has them making a bus as an rv?
cradek ? http://geektrap.com/bill/01205761106
see Gamma-X above
cradek, you making a bus?
I only read the line with my name in it
making thats pushing the boat out a bit far
not making - it's done
i read ur blog while at work today
the bus looks insanely awsome and well designed. Good job.
drive it out to ny sometime and fix my emc rig haha
i can supply an extension cord to the bus!
it'd cost you a bit in diesel for that trip
I gotta find someone in ny that knows what there doing with emc... I cant wait for SWPadnos lol
I lived in it for a week last emc fest - it was very pleasant
looks like a hotel on wheels...
that's exactly what it is
Wish I had that in highschool!
Coulda nick named it the bang bus! haha
Anyway! anyone know of a good benchtop multimeter... I would like something good for smt repair that I can install probe tweezers on.
is there a reason why EMC2 would give and error using I and J for radius cuts where EMC1 didnt?
cradek: THANK YOU! THANK YOU! THANK YOU! for using an instant hot water heater!
is there a scaling factor for the outputs on a m5i20 ?
the 5 VDC out on the drive enable is not enough to drive my relay
I don't think that you would want to drive a relay coil directly with a 5i20.
what should I drive with it?
mikeggg: drive a big power transistor that drives the relay
what are you driving with the relay?
my servo amps have a not-enabled pin. when you ground it, it disables the drive
bought some cheap mechanical relays thinking the 5v signal from a 7i33TA would switch the amp on and off
make sure to use a snubbing diode also across the relay coil
not sure what that means
i know what a diode does...
the Back EMF from the coil could kill your mesa board.
cradek: What is this "Solid State Kooler" he talks about?
mikeggg: the hm2 firmware for the 5i20 has a not-enable output for the pwmgens
[21:31:11] <geo01005_home_> http://www.kpsec.freeuk.com/components/relay.htm
are you trying to connect that to the not-enable input on your servo amp?
well, not sure i'm using the hm2 firmware
loadrt hal_m5i20 <- that is at the begining of my hal file
no, that's not hostmot2
i'll shut up now
should I be using hm2?
not sure what the differences are
but yes, I am trying to connect the not-enable output of the 5i20 to my servo amps...somehow
do you know if the servo amp sources current when you ground its not-enable pin? if it's not too much, you might be able to just connect it to the 5i20 (assuming that not-enable in its high state is un-groundy enough to register on the servo amp)
(And yes, "un-groundy" is a word. I just made it up.)
it was un-wordish before
no, I don't know
in any case, the signal ground that makes the not-enable pin work, is not the same as the case ground...
however that works
argh hot soldering iron is hot
mikeggg: and/or DUH!
if they don't have the same ground voltage then I would suggest using an optoisolator.
well, have a 7i37 on order that I think will do the trick
mikeggg, you should use the hostmot2 driver. The older m5i20 driver will be removed at some point as it has been replaced by hostmot2
I thought I should be using it, just wasn't sure why
it is more awesome :)
good, we are running low on awesomeness]\
SWPadnos: Have you seen the gecko lately? It has a ethernet iface now
the G100 always has
it's on the Rabbit module
SWPadnos: Ah, so when will that be incorporated into emc =)
if you want to use an optoisolator and don't want to make your own board sparkfun started selling these: http://www.sparkfun.com/commerce/product_info.php?products_id=9118
jymm, not before Rabbit decides to release open-source compilers, or GCC starts supporting the Rabbit CPU
a few of us have them, I think I'm the only one with the development environment
note that RTNet would also need to be supported, both in HAL and on the Rabbit
* geo01005_home_ remember looking over the logs for hours reading about rtnet.
SWPadnos: Well, not worth it if the dev kit isn't open source
I think the compiler can be run under wine, but you can't download to the devices that way
[22:04:34] <Gamma-X> http://www.youtube.com/watch?v=qIfo_-d82Co
great intro on oscilloscopes above
does anyone know how to solve a two-equation simultanious equation using linear algebra/a matrix instead of using substitution
oh, i think i figured out what i'm doing wrong
figure it out?
anyone recomend this to me? it closes in a few hours and I need to pass out http://cgi.ebay.com/Agilent-U1604A-Oscilloscope-MultiMeter-40-MHz-2-chs_W0QQitemZ270435523436QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item3ef7369b6c&_trksid=p3286.c0.m14