What is a Panasonic Minas MBMK062ELE1 motor
minas hyper brushless servo
$60, there abouts
Yes, so you found the eBay auction I am watching...
no, some uk site
[00:37:36] <DaViruz> http://cgi.ebay.co.uk/Panasonic-Minas-Hyper-Brushless-Servo-Motor-MBMK062ELE1_W0QQitemZ260557157829QQcmdZViewItemQQimsxq20100224?IMSfp=TL100224126001r22279
that dude claims more data is available on panasonics site, but i can't find any
Yes, that's the one
oh, it's ended though
Or a simialr one, eBay 260561473169
i'd ask the seller for the additional data he found on panasonics site
I am only slightly curious about things like torque and voltage
Which is another question... Servo motors seem to be specified for really very high voltages. Is that the max safe voltage, or do you really need a 300V supply for some of them?
andypugh: even 400V
I get a bit nervous around 400V Cd supplies
makes the motors more efficient
if it is the same torque.
More painful to touch
and allows you to run them of rectified 230V AC mains
and less amperage is the safer one then less voltage!
elmo40: That's simply wrong.
voltage is nothing withought Amperes
the amps will kill you. less then 1amp will kill you!
stop your heart
I speak as a resistor, you might be built differently.
but 10,000V could flow through you like nothing
highvoltage will travel 'over' your body. ontop of the skin. unless you are pierced ;)
if you get 10kV across your body you will most likely die, regardless
the burns will kill you if nothing else =)
I have friend that was shocked 30kV
if it's current limited there will never be 10kV across you body
have you ever seen people playing with Tesla coils? the voltage is high, the aps down in the mA
he would have injuries for rest of life
yes, and the voltage is gone once your body shorts the circuit
frallzor: if the 10kV STOPS with your body, sure. but electricity wants to travel. your body will never want to absorb it. it will travel through you to get to somewere else.
We understand what you are saying, that 10mA is all that it takes to kill you, and 100kV @ 1mA is safe, but 400V will easily push 10mA through you.
if you limit the current to say 10mA the maximum you'll see is 50-100V-ish
no, 10mA is not all it take. 1A is.
well that's very dependant on the current path
and worst case 60mA will probably do
DaViruz: A and V are directly proportional! you raise one you drop the other. is the R is constant
that is exactly what i've been saying
you've got it wrong. if you have a constant R, and raise V, A will rise too
what equation are you looking at?
elmo40: No, if you are a resistor, if you raise the voltage you raise the current too. You seem to be assuming constant power for some random reason.
Amps kill and volts penetrate. Of course you can get lucky and survive a lighting strike. But don't get brave with 1.5V and needles either.
V = IR
Yes, R is constant, double the voltage = double the currnt
* frallzor prefers U 8-)
well, put 10V across 10 ohm, and calculate the current
then put 100V across 10 ohm, and calculate the current again
you will get 1A with 10V, and 10A with 100V
this is really very very basic
But the body is also an insulator with a breakdown voltage
Van der Graff generators etc are safe because the current is limited to tiny, tiny levels. Don't let that persuade you that flying a kite near a 50kV power line is safe too.
andypugh: those powerlines have tremedous currents.
Yes, and so does the 400V DC servo drive we were discussing.
like i said, when the current is limited you will only see low voltages once you short them with something
[00:54:37] <andypugh> http://en.wikipedia.org/wiki/Electric_shock
using elmo40s math a 1.5V battery would be orders of magnitude more dangerous than high voltage..
clytle374: You are right about needles too, I have handled a 1.5V battery with cutting swarf embedded in my fingers, that really hurt.
andypugh, looking for the article about a guy trying to get a muscle reflex with a 1.5V battery and died.
I heard of someone who died with a 1.5V battery whilst performing erotic experiments in the bath..
Could be the same one, I suppose
clytle374: which muscle was that, was he performing open heart surgury on himself?
other than that i'm doubful you could kill yourself with 1.5
maybe he sat on it
and it penetrated him
He went into both forearms. Can't seem to find it now, but IIRC very legit source
maybe darwin awards :-)
* frallzor sniffs
Found a video of a guy grabbing the over head line of an electric train.
I can still smell it
I don't think I want to see that
I didn't either
I am guessing it went badly for him?
Unless he wanted to be a smoldering corpse, YES
Google has just found me that fact that some Italian trains have 3-phase power from the overhead....
that seems impractical
its Italian, all they do is impractical
It makes for very complex crossings, but very simple in-train electrics
i'm not sure it helps with in-train electrics these days
impractical for sure. they make crappy cars as well...
they likely have to rectify it to drive the motors anyway
but, the Ducati is amazing!
still 50Hz over there?
TGV/Eurostar is 25kV / 50Hz
yes, the entire world except the US still uses 50Hz :-P
Not all Italian cars are poor. Ferrari, Lambourghini and Maserati make some acceptable runabouts.
i could do with a lancia delta integrale as well
bbq lighters are 10kv they don't kill many people l->
Yes, that would be acceptable to me too.
I would like a bugatti vaeron
A colleague of mine has a Delta Integrale.
higher frequency is more efficent. More waves per time means higher V_rms.
The Lancia Stratos would suit me..
elmo40: no, it does not
I am not sure that the difference between 50Hz and 60Hz is significant though.
elmo40 no rms is independent of frequency by definition
besides, ac voltage is already expressed in V rms
Also if you look at the biggest transmission lines they use DC because it is more efficient.
not common clytle though true
higher frequency means more parasitic losses
Is anyone else worried that elmo40 is going to end up smouldering on the floor of his workshop?
i'm worried its going to be somebody elses workshop ;-P
or someone else in someone elses workshop
clytle374: since when is DC more efficient then AC?
since the laws of physics were instated roughly 14 billion years ago
Since they found solid state ways to convert voltages
dc transmission of power over long distances is more efficent than AC as it is not subject to parasitic losses due to the nature of AC current
higher frequency -> more eddy current losses, more current shunted through parasitic capacitance
It always has been The simplified tv version is that ac is more efficent.
this is why edison failed to sell the DC generating stations. Tesla proved that you can step up the power easily with AC and transmit over longer distances. edison said 'so, have a generating station in every city'.
like say the million volt DC line that runs verticaly through the US and a few through russia
[01:19:08] <Valen> http://en.wikipedia.org/wiki/HVDC
AC is easier to step the voltage up and down, that is all.
The only reason that HV power lines are AC is that it makes it easier to transform back down again at the far end.
[01:19:22] <clytle374> http://en.wikipedia.org/wiki/High-voltage_direct_current
yes, voltage transforming was easier with AC 150 years ago
I'd say thats debatable these days clytle
at "sane" voltages silicon is cheaper than copper ;->
personally I'd like to convert the power grid to DC to the wall
you have my vote
that would greatly improve the efficiency of every switch mode power supply in operation as well
(in australia) if you run ~400vDC to the wall its just over the peak voltage of the AC line so it's not going to cause any weird issues due to voltage
I will join you as long as we can have 3-Phase DC :-)
replacing every power pole transformer in the US would take some time.
a few hours or so...
and you can make AC power out for things that still need it with a super simple switchmode
best thing is you can phase in the introduction over time
you guys have a transformer for every house dont you?
Which Guys? (was meant to be the question, who put that enter key there?)
but generally people who run 110V
best part is 400V DC lets you use all the 600V silicon still, so its all just plain nifty
need to replace all your wall warts with nice high efficency models
In the US most every house has a transformer for 220V
only need a handfull of high power inverters for things like vacume cleaners and fridges
no there are about 4 houses per transformer where I live in the US
but they should be on the order of $20 with some volume production
Valen: Make the fridges Peltier and keep the DC..
peltier is really inefficent
do not do that
use the efficent brushless motors they are using in new fridges but dump the ac>dc converter stage
But it's kewl and solid state, that matters more than efficiency and effectiveness!
if you're heating your house by electric means, sure. if you're cooling down your house, nah
We will all be heating electrically eventually, I suspect.
if we can get fusion power
Valen try Gilette
i would like to use the 65% waste heat from nuclear plants to heat houses
Thorium fission is an option.
instead of pumping it out in the ocean
Thorium fluoride is the key, IMO
actually in sweden there was a plan in place to use the waste heat from a nuclear plant to heat a major city, but it was eventually discarded
DaViruz hey fish need to be cozy too you know!
DaViruz something about radioactive water running through my house doesn't make me feel warm and fuzzy inside
Did the Russians heat that one city with waste reactor heat?
If every human on earth uses the same power as the average American then known Uranium reserves could last 20 years. If they can get Thorium fission working then that will last us 10,000 years. I am confident we could get Fusion working in 10,000 years, pessimistic about 20 years.
it's not radioactive and it would pass thorough several stages of heat exchangers
Water itself doesn't become radioactive.
thy use some of it to heat highways now instead, to keep them free of snow and ice in the winter
clytle374 the russians heated the whole globe with the cloud from Chernybll
pfred1: No they didn't.
andypugh I remember tracking it as it went around the planet three times
actually they did, but i doubt the heat from the radioactive decay was even measurable ;)
Yes, but I think it had a net cooling effect, with bonus deaths as a feature.
DaViruz it was still pretty scary
andypugh supposedly only 30 people died as a direct result of the accident
nuclear accidents are interesting, too few nowadays
*note to self; get job at a nuclera power plant; cause accident*
I meant indirectly. And I want to mention the bravery of those people who went in to sort it out knowing that it would kill them.
andypugh yeah the guy who flew the chopper to dump concrete onto the core got toasted
or getting tricked to do it, having no clue about the dangers..
DaViruz if you're smart enoug hto fly a helicopter you know when you're going over a blown up nuclear power plant
Many of them were nuclear power plant staff, they knew what they were doing, but saw it as their responsibility
a lot of the fatalities were the fire fighters who put out the fires
andypugh it was more the fault of the plant designers
the place was a death trap
that is a pretty controversial matter
though the boneheads running the place at the time didn't help matters any
I read a report making it sound like amateur hour in the control room.
but i agree, the plant design was a disaster, but it would never have happened without human error and negligence
yeah i think they were conducting some kind of a drill and no one was really paying much attention
they were testing what would happen in the event of external power loss
which would force them to switch water pumps etc to the power generated by the plant itself
the new thing is pocket reactors a company that makes reactors for shipping is getting into the game
I think it was a shutdown or idle test, the most dangerous thing you can do.
It was the first time I noticed the internet existed. There were email updates and rumours coming in to the computer in the hall of residence I was living in as a student.
what was it about 1986 or so when it happened?
i was two years old :/
yeah we had no Internet
I was 21
DaViruz I was older than you were when I saw the first man walk on the Moon
hell you might have been older than my parents :)
DaViruz they started young then
is there a way with frequency in the axis test to figure out my motor RPM?
Simplest way is probably just simple maths, you know the ipm and the leadscrew pitch...
andypugh well the axis test gives you that
I was just wondering what RPM the motor is spinning at though
Gives you which?
I gave it bs numbers for my non-existant lead screws etc
Motor RPM is IPM/leadscew Pitch
thanks let me run it and get the number
Hmm, the actual calculation depends in if you have pitch in turns per inch or lead per turn, of course.
ah i told it 10 turns an inch
So 48 ipm is 480 rpm
I will use 1/2-10 acme leads
hmmm I was hoping it'd run stronger faster than that
yes 1 stack they're little vextas
124 oz/in unipolar
It's only going to get less when moving the machine.
I mean they run faster but not stronger than that
that seems to be the strong spot
See how it goes, but you might want to start mentally preparing yourself for bigger, bipolar motors and more volts. Then you will start looking at servos with avarice.
andypugh I'm not looking for much out of this machine really
but as it is now I cna't stop the shaft by holding it I mean it's not flighty and it is reversing etc
They _should_ have peak torque at very low speeds, the classical stepper torque curve is downhill all the way from 0rpm
as in you put this motor to a screw and you're going to have some power
Good, get it connected up then, rather than wasting time on IRC.. :-)
well it seemed to me my motors would pull out at around 250 RPM
i'm running 200oz/in, 26V bipolar with geckos, and i'm getting 50ipm reliably, but it's not very strong at that speed
like you could reverse direction full tilt at that speed
using a 555 timer for a step generator
emc with its accel ramp is nice
It all changes (in somewhat unpredictable ways) when there is a machine connected.
The 555 seems like an odd choice. EMC can produce step pulses directly for a unipolar motor.
axis test says my max pulse rate is 6400Hz 8000 steps/in
andypugh i used the 555 before i hooked emc2 up to build my motor drivers
[01:58:57] <pfred1> http://img683.imageshack.us/img683/6498/stepproto1.jpg
not quite a Gecko
You are ware of the Stepgen options that can drive unipolar motors almost directly?
andypugh no I am not
Not that that is necessarily a good idea...
I just went with the classic step and direction inputs
[02:00:17] <andypugh> http://www.linuxcnc.org/docview/html/man/man9/stepgen.9.html
Types 9 and 10 for example.
andypugh yes I don't think my PC would care to take o nthe work
andypugh how the heck you get all the outputs?
A dedicated chip and step/direction is probably better,and a commercial drive is better still.
I've seen commercial drives i wouldn't trade mine for ;)
with the cheesy 4 steps of current selection etc
I found to get my drives to perform best i had to be careful with my current setting
more did not help
It depends on what you are wanting to do, and the budget. I decided a while back that the P-Port and software pulse generation was too limiting, so went for a Mesa card. I have been using commercial drivers since the start. But I think is it cool that EMC can drive a stepper using nothing more than components to buffer the P-Port currents.
I seem to be loosing ground on 64 bit rtai. It gets worse with every try.
when i started this project commercial drive options were much more limited than they are today if I had to do it all over again I would go a different route than I am taking now
clytle374: Why are you trying? I assume it is an academic excercise as EMC works perfectly well in 32 bits?
but I think there are still people traveling a rougher path than I am
andypugh, matter of principal or vendetta at this point.
there are indeed, a friend of mine is experimenting with driving a bipolar stepper with a stereo audio amoplifiers :)
clytle374 the path of least resistance can be the most pleasant at times
it actually seems to be working surprisingly well
DaViruz like the linistepper project
I'm mainly still trying it while wiring up some cables.
Yeah, I have been there with my SMP kernel. I hated the thought of that CPU sat there idle, to spent ages making an SMP kernel and EMC build that could run both. The payoff was that latency went from 24,000 to 6,000. But as I have a Mesa card that is actually pointless.
but you're missing out on constant current, so i doubt he gets good performance on both low and high speeds
and why does Ubuntu have to rename the kernels.
clytle374 what distro doesn't?
It's more an issue that EMC seems to use hard-coded kernel names.
clytle374 like I said what distro doesn't :)
It is a question of what rtai patch to install.
Ah, yes, that problem.
where did modules go?
is that a rethorical question? /lib/modules/<kernel version>/ if not
Don't ask me, I am baffled by Linux. I just followed step-by-step
[02:14:02] <andypugh> http://neo-technical.wikispaces.com/emc2-ubuntu
years ago I applied the rtai patch to a kernel on a non live CD distro just to check it out
DaViruz, yeah. Check the timestamp to find out what modules you just installed.
I built 32 bit okay,
64 bit seems like as many headaches today as when it came out
and back then if you'd have asked me I'd have said it'd all be sorted out by now
can't those 64 bit CPUs run like they're 32 bits?
I haven't ran into a roadblock in over a year, and that was flashplayer
When I was a lad you had 8 bits and were happy
andypugh when i was a lad I played with TTL and was happy
andypugh 8080s cost hundreds!
they weren't around when I was a lad
though around 1991 or so I did by a sinclair with one in it
If they said it didn't work, then fine. but they say it works, and I guess i'm taking it personally that I can't get it to work
Sinclairs were rather old in 1991, do you mean 1981?
this is a Z-80 based system http://img708.imageshack.us/img708/7615/p7100104.jpg
andypugh no I waited til they dropped in price :)
Clearly I had a priveliged upbringing, I bought my ZX81 with pocket money and odd jobs.
actually in 81 it was still the Apple ][
that came later
I think that the ZX81 was £75 (or $100) in 1981.
that was around in 81
MattyMatt is keeping rather quiet :-)
andypugh it may have been around in england that early but not here in the states
Perversely, I guess that the ZX81 was a realtime OS, or the screen graphics could never have worked (it did program execution only when the screen was resetting)
clytle374, you related to a Vern, Elliek, Peter, Dewey, or (Bill or Bob) from Indiana?
No, only person there with the name is grandma and grandpa.
Only been one son each generation.
I talked to my grandpa and he said his dad had 5 brothers, so 6 in total
andypugh when you used yours did it get really hot?
and a few lived in Northern Indiana
Yes, they got rather hot
My great grandfather is the end of the genealogy.
andypugh I bought a surplus keyboard from radio shack and fitted it to mine
andypugh I only had to move around a couple of keys on it to make it work
andypugh but man would it interfere with TV reception then!
Did that help? The keyboard had one key per keyword, without the legends it would be a nightmare to work out how to get the keywords
like the keyboard i put on mine acted like an antenna broadcasting he noise of the system
ahh I bet we're still distant relation somehow
andypugh oh i took the old membrane and glued it to the raised part
andypugh it was much nicer with "real" keys
* pfred1 hacked the matrix!
as i can recall I visually decyphered the membrane one looking at the back of it
If anyone is puzzled, and cares, the ZX80, ZX81 and Spectrum had a system where keys typed whole words according to context, and the upper 128 character set were tokenised BASIC keywords.
[02:36:17] <andypugh> http://www.wearmouth.demon.co.uk/zx81kb.htm
robotito my breadboard?
robotito this? http://img708.imageshack.us/img708/7615/p7100104.jpg
OK, sleep beckons
robotito on that board there are a few circuits the middle right one is a Z-80 based microcomputer
robotito the top is an EEPROM programmer i needed to write the firmware
it was all very un-user-friendly
tlab, who knows?
the funny looking thing on the end of the coil cable is a 8 bit hexidecimal encoder
I dunno lol
you had to write each hex nibble one at a time and shift between the two
my grandpa might but he's getting old
My grandpa knows nothing of the lytle side other than his father being 'dumped' with his mothers parents.
what was his name?
might be related to the other lytles here in town that I'm not directly related to, but could be a distance relation to
here's a weird story, we bought a car in Indy from this small car lot, one of the owners said he was in the war with a Lytle from Illinois come to find out he was related to the other lytles here in town
[02:49:59] <tlab> http://www.indianamls.com/agent_contact_pages/themes/trapezoid_blue/index.php?id=997
this lady is no relation to me that I know of, but maybe distant
she said she had a family member working on a genealogy tree
We've been contacted by several people working on genealogy, but none of them found a relation. The name in common is other parts of the country.
yea seems around this area, mid-west
I met a couple from Arizona I believe that said they knew of no other Lytles...
We had a family with the name move in across the street in the midwest, the lady had the same name as my mom.
we have some fam out in Cali and Oregon
tired, going to bed I have a 6 page paper to write tomorrow ya
anyone tried this Xenomai? It's mentioned on the EMC page.
P=IV, if you want 5Hp and 120V you will use xAmperes. if you want 5Hp with 240V you use .5xAmperes
the link on page 29 of http://www.linuxcnc.org/docs/2.3/EMC2_Getting_Started.pdf
is no good anymore
that was the formula i was looking for, not v=ir
elmo40 if you want 5 HP on 120V you'll burn your house down!
so, when you raise the voltage you drop the current load.
pfred1: whatever. it will run, just consume approx 50Amps :P
too much draw on one side of the transformer, not a good way to load balance your breaker panel
but i digress, it was an example.
I have 2 220V lines in my garage I do need another though
if you find a single phase 50A breaker (for the kind of panel in a house), I'll be surprised
single phase being 120V in a residential panel in the US
probably will never see one. the wire would have to be 2AWG!
right, which means you can't actually run it on 120V, unless you decide to not use a breaker (and even then, it's unclear as to whether the panel will handle it)
well, #10 at 20' from the panel. any furthur and you would have to go larger.
one of my 220 lines is a 6 but it's pretty long
your panel should handle it. most houses have at least a 100A service.
assuming you could find a 120v 5hp motor... FLR and starting current would be amusing.
I can't remember if the motor on my compressor has wiring for 120V or not
I sure as hell didn't actually consider it though
compressors that run on standard 120V service and are labeled 5HP are lying to you
I swear motors run on 220V start up snappier than they do on 120 too
my 240vac 5hp only pulls 21A when running
SWPadnos my compressor has a Weg brand 5 HP motor on it
since the max current you can get from a standard outlet is 15A, 20A for the special ones with one horizontal blade
atmega: and it should only pull that.
5HP is ~750 * 5 = 3750W
which would be ?30A at 120V, assuming that's the input power rather than the output power
SWPadnos it also didn't come with any plug I have it in a 30A 220 outlet
which would require two cords, plugged into two circuits (since the standard outlets are only rated for 20A aggregate)
sure, 5HP on 220V is fine, but not 120V, which I thinkj we were agreeing on
I bought it at a flea market for $20 but looked it up it's a $500 motor
it was an example.
5hp on 120 is insane.
current load is too great for normal household setup
I've seen lots of 2hp with 120 wiring and a few 3hp (real rated motors)
doesnt mean they do not exist ;)
it was a while ago but i may have been able to wire that motor 120
on another note, are all the p-port GND's connected together?
but if I did I'd have burned my house down!
3Hp is the rated max for 120VAC.
atmega donno i just lashed together one axis n my desk here and used the gnd for the data
atmega this is what I used: http://www.interfacebus.com/Design_Connector_Parallel_PC_Port.html
atmega I was running data off pin 2 so I used 19 as the ground it worked
atmega but really ground should be ground
but, I was only going to grab one, wanted to make sure they were all hooked up
you could try rining them out with a meter see if they tone
I'm so stoked my 100% homebrewed electronics all work
I do have to finish designing my buffer board
yes for steppers
but the breadboarded IC I have going worked on driving one motor driver
so the whole circuit should work too
how much current?
atmega where? off the parallel port or the motor driver?
atmega variable 1-3 amps
oddly motor is rated at 2 amps but runs best at less than half of that
its actually very finnicky about it
I'm trying to put together various assembled parts, I have two motors rated at 4.3a for parallel
I have a 15 turn trimmer in there to adjust the current and I need it too
atmega one thing I learned early on is more power is more trouble
they work fine with old parker drivers, but they want sinking step/direction. I also have someones cloned 3 axis board that says 2.5amps max
atmega falling edge?
atmega just use an inverter
or use this 8435 board and hope it doesn't fry
for all of this stepper stuff I really am liking schmitt trigger inverters 74141
atmega homs laws are your friends
ohms even damn I must be getting tired
don't hope it doesn't fry measure the current draws calculate what you need and what you needto get it
I need to buy geckos
mariss isn't rich enough?
my motor drivers cost me about $10 to make
my parkers were free :)
here's one of my drivers: http://img683.imageshack.us/img683/6498/stepproto1.jpg
wow, that's some $10
atmega just the brown board in the front
atmega the back is a prototype breadboarded to prove out the circuit
yeah, but all the misc. stuff you have laying around adds up
atmega ICs most of them are like a quarter
terminal strips, heat sinks, etc
atmega nah i strip heatsinks out of junk electronics
I got a whole box of the things
plus i used to work assembling electronics I used to get garbage bags of parts
like that terminal strip I got a whole package of them from there
I used to get my son to pull things apart for me, too old now though.
heh stripping electronics is an art
I got this thing called a solder pot I put the board over it yank parts out
top of it is about 3" in diameter molten solder
heh... has to be a lot quicker than my method... one leg at a time
nope that doesn't work
use a blow torch its better
heh, he would probably do that for me with the blow torch.
you get an empty cardboard box flow the bottom of the board and swat it fast int othe box its called heating it and beating it
do it right parts just fall out
but you have to empty the box between shots or the solder hits the parts you just took off
some people use heat guns
leg at a time you'll end up burning parts out before you get them out of the board tearing legs off etc
me i hold the board with a pair of pump pliers in the molten solder and with a pick tool flip out the parts
takes me like a second to pop out a 64 leg IC
fortunately I don't have much of a need for those.
some parts still don't come up clean no matter what you do
holes in boards are too small or parts just too delicate
me i think its worth stripping an old tube TV just for the heatsinks in it
old TVs got some nice heatsinks in there
there a thread on cnczone about guys stripping commercial copiers
pulling like 285 oz/in motors timing belts all kinds of stuff
and the copiers have the ICs in them to run the motors too!
bearings guide rails copiers are loaded
wow, that strong of a motor?
perhaps you hold the paper in place and the copier moves underneath it.
how does this kit sound? http://www.xylotex.com/3AxSysKit-425.htm
$50 for a 425 oz.in. motor? Sounds good to me
they say they are too powerful for a Sherline or Taig conversion ;)
I've never used them, but if I were going to bjy that much stuff, I'd lean toward a G540
for that kind of price?
$250 for the drive, whatever for the motors, plus a power supply
even comes with the power supply
so, same price for the most part.
anyone see this? i cant get it working, looks interesting though
[06:58:19] <elmo40> http://www.cnc-club.ru/forum/viewtopic.php?f=15&t=35
love their header pic ;) http://www.cnc-club.ru/forum/styles/prosilver/imageset/cnc-club-header.png
[08:00:34] <MrSunshine> http://vk5dj.mountgambier.org/Beam/AS5040/AS5040-45.html
<-- does that magnet just have to rotate straight above that chip for it to give outputs ?
looks like it, yeah.
rotate so the poles are trading places each 1/2 rotation.
looks like a neat little device =)
maybe should buy a few and encode the stepper motors :P
the reprap peeps sell a magnetic encoder, if you want to get pcb's
but can emc do steppermotor + encoder for place adjustment if it starts to step over? :)
I think they were used for extruder motor speed feedback.
[08:36:13] <MrSunshine> http://www.youtube.com/watch?v=iQGP97mWWm8&NR=1
is there any tools for milling ceramic materials ... or what i should call it .. klinkers etc :)
maybe not called that in english
the tiles that are in a bathroom :)
dang, this mobo don't like this HD...
jthornton whay you say that?
when it gets to detecting the HD the mobo shuts down
if I unplug the HD it will go to the bios screen
yeah thats sucky
things to check, master/slave/cable select is set right, cable is right way up (old cables let you plug in any which way)
cable is keyed, master set
will the HD work in another computer?
I'll try cable select
HD maybe going bad
anything else on that cable?
it did before the old mobo died or was it the HD all along
does it spin up when power is applied?
didn't check that
double check the power is connected too btw
done that plenty of times
feels like it spins up
I'll try another HD
different drive works fine
check see if that drive works in another computer, if not the HD is bad
that drive was in my 8.04 computer that I do the docs with... I wonder if the drive was the reason it stopped booting up
could well be
good thing I didn't blow it up yet
I'll pop some parts back in the Gateway and see if it boots up
izua_ is now known as izua
That was close, the Gateway still works and it was going to get blown up this afternoon
the Gateway is an Athlon 64 3500+
I think I can find a PIII to sacrifice in it's place out in the garage :)
Weee I'm installing 8.04.4 on the (what I thought was dead) Gateway
[14:20:58] <numen> http://www.youtube.com/watch?v=27NX_MMIkLY&feature=channel
well the Gateway is back up and running now to get git
I installed 8.04.4 then tried to get git-core from the package manager but get this error http://imagebin.ca/view/QrywMfS.html
was it a mistake to install 8.04.4?
JT-Dev_: enable universe
hmmm, those were enabled all ready
a reload fixed it
we are getting git now
git clone will keep it busy for a while I'm sure
hows it going John
Mornings take it! ;)
as gmt rules, its afternoon!
well I figured out that the HD was the problem on my Gateway that I do the docs on so getting that one all set back up atm
archivist: is the closest one to gmt I think
* jthornton wanders back out to the shop to try and figure out what wires make things move in the turret :)
well the 15 MFD cap got the line voltages within 1-2 volts on the phase converter
thats pretty good, huh?
yea, it is better than the other one I have at the other shop
better than my rotophase too i think
but i hardly use that anymore, i have a vfd on almost every machine now
except the surface grinder
there, just set up my external coolant tank and pump on the mill
the old coolant tank was in the base of the machine, which is cast iron so it turned my coolant into rusty water
so i set up a 10 gallon external tank and pump, with another pump in the base of the mill to pump out any coolant that might make it in there. it cycles on for a few seconds every 20 seconds
i might put a float switch in there or something
(cycles on only when the coolant is running)
aa-danimal-shop: I use sodium nitrite in my plasma water to keep it from rusting
hmmm where do you get that?
how much do you use?
not much about 1 tbs per 5 gallons if memory serves me today
don't know what that would do to your cutting fluid...
my plasma water is just sodium nitrite and an some stuff to prevent things from growing in the water
algaecide, fungicide, bactericide, virucide it's for water fountians
I know fluorine was not talking to me LOL
JT-Hardinge: gentlemen and lady? :)
are you dipping your feet in there or something? lol
JT-Hardinge, did you make your turret ladder yet?
entry 32: const char weirdness. gcc isn't including the 0x20s in my string? needed to declare static. strange strange.
fluorine: I'm a redneck :)
mine's still working fine... not sure if i changed it since the one i gave you, but i can send the most recent one
I may try Kirk's comp for the turret
havent had a "misshift" since i adjusted the magnet
cool....he did it all in C+ or somethnig, right?
and in hal
he did a comp
did you read about it on the forum?
not too sure what a comp is :)
no i just joined the forum
my only post is in your thread
things like wsum abs ect are comps
you loadrt the comp and the pins are there to hook up to
then if needed you addf it to a thread so it gets updated
yea i dont know technical terms :)
still looking at knives
a surface grinder will probably be cheaper than the knives lol
has anybody tested the oxford chips for paralel port , with the netmos chips , we found that the hostmot2 is not working
on the list - I think peter from mesa listed the boards that he has tried.
on the list????
there are many atom embeded boards , but unfortunately they have not a parport
dell is selling minipci boards with 1 paralel and 1 serial port
verry nice solution
the atom board I have has a printer port. It is intel made
combined with the mesa 7i43....
[17:18:03] <skunkworks> http://news.gmane.org/gmane.linux.distributions.emc.user
Many common Atom cards (and even some 510 based ones) have parallel ports
i am talking for embeded boards 3,5 inch
small , fanless
only 5V power supply
I think many of the Mini ITX have parallel (and some are 12V only)
they are too big for me
look at www.aewin.com.tw
look for EM-5300
at the embeded boards
Parallel is less likely on and embedded card, Why do you need it to be so small. Its likely to really limit your choices
this card is for industrial application , and combined with the mesa 7i43 , os verry cheap and small as dimentions solution
the whole emc can be fitted in a flash card
bether than this for industrial , i can't imagine
whole cnc controler in 3,5 inch case....
i'd rather not be able to loose my cnc controller in my shop
unless the machine is small I would think a few inches larger controller would be not be a problem
[17:38:59] <WalterN> http://faceball.org/
take a look at aec's older models, and how long they were available.
[17:40:54] <isssy> http://www.youtube.com/watch?v=0vUXwvy6BE0
well, I know what does what on the turret now :)
there's only a couple of things
makes it easy
yea, the lift and spin is 120vac and the lock is 24v
mine's all 12v
well actually 15v
yea, all the valves are 120vac except for the turret lock
my valves are also 120vac, except for the turret stuff
the up/spin and stop are both 15v
how did you drill the rails?
im thinking off placing them as correct as possible first, then fasten them, then pilotdrill and then do the rest
I picked up some open spools of 8 and 10 ga wire yesterday, both for $30.
9lbs of 8ga ~= 189ft, 10lbs of 10ga ~= 330ft
is copper back up to $3 a pound? ;)
oh - wait - I read it as 101lbs ;)
If that's true, I'm going back and buying the other spools!
8ga @ 0.007/ft and 10ga @ 0.004/ft - I think I made out pretty good.
Assuming this chart I'm reading is true.... 1lb of 8ga = 21ft and 1lb of 10ga = 33ft
One spool was marked $20, but he gave me both spools for $15/ea... works for me =)
what are you going to do with that
you dont have a machine that needs 10ga, nevermind 8ga
unless you're planning on running 20 of your mills off of one outlet
is it working??
yes and no
LOL all the valves in the stack are 120vac except the lift and spin which has a 24vdc coil
yea i thought 120vac seemed weird
mine are 15v
I was thinking about hooking it up to the 7i37 but after reading the manual I sure I don't have any free wheeling diodes what ever that is
is your valve in the carriage?
my lift and spin is down below with the rest of the valves
yea all valves are in the carriage
I only have the lock valve in the carriage
john u have SSRs that drive the values no? they have dicodes access them u may have to swop em around if u want to gnd signal it etc then u can drive them direct from 7i37
so did you burn up the valve?
I do now
robh: it is easier to just use an unused 120vac coil
I have one of them that is not used
I guess from the original wiring that the lift and spin and lock was controlled through the interface board
and that is why they didn't use an SSR on that one...
ooooh new updates
i figured the next version would be 2.4
I switched coils and now it is better :)
do you have to adjust the encoder magnet at all?
my turret encoder is not working atm a blown cap, replacement on the way
the coil on the lock valve draws 1.8 watts at 24v. can I control that directly with the 7i37?
the manual should say, i dont recall but i know 24v isnt an issue
i think it can handle 1 amp
but dont quote me
7I37 is 1A so 24W maximum @24V
thats what i thought
you're only drawing .075a
aa-danimal-shop: you won't get 2.4.x as an automatic update probably
when is it avalible? i'm looking forward to that feature to prevent accidental homing
pcw_home: so I don't need one of the free wheeling diodes on that one?
it's in feature freeze atm, so probably around end of the month
JT-Hardinge, i think you really only need that for relays but i could be wrong
alex_joni, thanks for the info
the coil on the valve is similar to a relay coil
i cant believe my manual lathe can take a 1/4" DOC in 4" diameter heat treated 4340
with a crappy harbor freight single phase 1hp motor
and a overhead flat belt drive
JT-Hardinge, true. i didnt use one though
JT-Hardinge, often the free-wheeling diode is on the coil of the soleoid
it is a good mac valve :)
For small loads (like you have) you can get along without the diode but it will make more electrical noise
(when it switches off)
so the turret function is: release lock, wait a short time, spin to new tool, wait a short time, lock spindle
well you might have issues with that
hows that Dan?
i have it like this: up/spin, stop engage, wait a little, disengage up/spin, wait a little, disengage stop
you need to have the up/spin engaged for a few hundred miliseconds after you fire the stop piston
ok, to stop the turret from rotating
and the stop isnt engaged full time...it's just for stopping it till it settles on the blocks
if you remove the turret, you will see 4 tapered blocks, that's what keeps it in place.
there's a big air piston that raises and lowers it, and it pulls it down hard on those 4 blocks so it wont budge
on mine, i keep the turret up/spin coil active for 100ms after the stop is engaged, and it disengages the stop 600ms after it's stopped
I've saved all this and time to connect a few wires up :) for some inputs
aa-danimal-shop: I see what you mean about the turret behavior now
cradek tipped me off to that
i was fighting with it for a while till he said something
frallzor: happen to be here'
do you have the wsum all figured out?
yea, that is no problem
i had to have an arithmatic expression because it was off one
i changed it from 0-7 to 1-8
no, it's not a Jymmm machine
[22:29:49] <pfred1> http://www.youtube.com/watch?v=nGHhqV_QhzE
do I need all of these inputs and outputs on page 9 of /home/pfred1/Downloads/PDFs/EMC2/EMC2_Getting_Started.pdf ?
i cant follow the link to your HDD lol
oh right sorry
[22:34:21] <pfred1> http://www.linuxcnc.org/docs/EMC2_Getting_Started.pdf
under Pinout Information
depends on what your machine needs
I guess I'm just getting excited to get things running and tired of designing this board
it is a very boring board to design
well I'm going to be one short on all of the outputs I am using 8 channel buffers and I'm not throwing another one on for one output
or should I say I'd prefer not to throw another one on for one output
oh wait i could use a channel on the input in reverse couldn't I?
hmmm makes it a bit more interesting for me at least
yeah I'll have 3 unused on that buffer I can use one of those!
my brain is turning into mush working on this: http://img689.imageshack.us/img689/9889/bob2partial.png
pfred1: here is what I'm working at: http://imagebin.ca/view/gRUUwS.html
it's scary :)
micges under file there is an export option to make schematic pngs
didn't know about that, thanks
micges the pdf option is handy too
micges i usually like running Eagle but this schematic I'm making now is just too repetitive i guess or something
for io there will be always repetitve
micges yes I'm starting to learn that I sort of drifted away from digital a few years back
micges really until this project I've pretty much avoided working with digital like the plague
here we have the same with analog signals :)
no analog is cool
heh - I agree with micges
good night all
jmkasunich: no problem, when & if you can. thanks