would feeler gauges rust in gasoline? they are attracted to a magnet so I think that means they are not stainless.
I know I could get stainless, but I don't seem to have any.
if the gasoline had any water in it they would
yeah, I'm pretty sure gasoline normally has a bit of water
400 series SS is attracted to magnets
are you testing the rusting of feeler gauges in gasoline?
and currently with the Ethanol content it can absorb even more water without drops forming at the bottom
I think I've never seen rusty feeler gauges, so I'm suspicious that they are stainless
a little rust would ruin them pretty fast
BigJohnT: considering using them to make flapper valves for my fuel pump
turns out there's not enough height available to make a ball+spring valve.
get some stainless shim stock...
what kind of fuel pump?
old fashioned carburetor pump
for check valves
hmmmmm I have .005 brass shim stock
wabro uses some kind of fiber inpregenated material on their check valves
some .02" g10?
I think there's a SS shim stock kit from MSC that's got 0.0005 - 0.012, somthing like 15 or 20 sheets
$30 or so
oops, 0.001, 0.0015 ... to 0.015
don't some floppy drives have a flat ss band that is used to move the head
[00:43:19] <SWPadnos> http://www1.mscdirect.com/CGI/NNSRIT?PMPXNO=1647761&PMT4NO=61705617
is using a mill DRO on a lathe a horrible thing to do?
eric_unterhause1: it'll read radius
or was that an old hard drive I smashed up...
unless you can adjust the scale on the two axes independently
you can get an 8 x 12 sheet of 0.001 ss shim from mcmaster for $7
I think I can live with radius
now we play "try to cut some off the roll without bleeding all over it"
this is 12 6x12 sheets for $27.18 total
cradek: are you restoring something?
I'd send you some (brass or stainless), but I'd proably send the wrong thickness or size or something
just fixing the fuel pump in my 52 chevy POS
you can't get a rebuild kit for it?
it can still pump fuel, but not air, and it loses its prime
BigJohnT: it would be as bad as the original - I've already replaced it once
sounds like my 81 chevy I could take it apart and put it back in my sleep I did it so many times
replacements pumps are only $110 or so, but experience shows they only last a few years :-)
I could snip you off a piece next time I go to briggs and put it in an envelope for a few cents postage if you want to try some
hm, with brass I can solder the flapper to the flat
I'm going to try this stuff
they have every size of brass shim stock from 0.001 to 0.031
might be super simple if it works
thanks for the offer - this .005 I have seems fine
I also have .001 but that's really flimsy
When I found out where the fuel pump was on my Ford Ranger (blocked by steering gear box) I just used a low pressure electronic inline pump.
Skullworks: that's definitely plan B :-)
cradek: do you have a picture of the pump opened up?
people with the model of taurus that I had cut a hole in the floorboard to get to the pump
BigJohnT: I'll take one...
man this camera sucks
[00:57:58] <cradek> http://timeguy.com/cradek-files/emc/pict6438.jpg
the flapper valve is a rubber washer with a spring on top (pressing down from that top cup)
two of these were pressed in those holes
I destroyed one because I couldn't get to both sides to press it out
you can see how little height there is to work with on the inlet valve (the near one)
* BigJohnT hums the final jepordy song while the picture downloads
I see what you mean
you can sort of see how the edges of the rubber washer are curled up - that's the failure
the spring can't press on the edges
ok, I see that
ever thought about using check valves screwed into the fitting holes?
interesting, that could work
you can get brass check valves in 1/8 npt up
viton seat 1/8 ntp male x female is only $10
* BigJohnT heads up to veg out in the easy chair for an hour before bed
talk to you later
heh, holes are 0.997 - american car
how do you write a web page such that text is blocked by a column?
[01:32:35] <eric_unterhause1> http://travisgoodspeed.blogspot.com/2007/11/ti-ez430-in-linux-with-iar-kickstart.html
somebody check that page to see if it's cut off so I don't have to go downstairs and check on another comp
tie right side of the monospace text is cut off on firefox 3 (on Windows)
but I can see it all if I select "No Style" from the view -> Page Style menu
didn't know you could do that, thanks
i want to make a bicycle light controlled with the msp430
I figure I can spare 6 milliamps
seems like overkill for a light
the chinese guys are using AVRs and PICs
yep, that's what I'd do ;)
PICs are nice and easy ;->
or maybe one od the Z8-style chips, I think they have a low power series
not that low
the PicoPower AVRs may have the best power consumption though
AVR's probably have greater community support but a higher learning curve to get into
plus you can turn the msp on and off very fast
without losing anything
a nanowatt PIC can "run" off a coin cell until the cell goes flat from age
presumably you still have to maintain 0.7V or 1.5V or something to keep the internal RAM alive ...
Valen, the picopower AVRs are in a similar class, I think
yes you keep it at full voltage, it just doesn't draw much current
last I checked, msp was the best at sleeping, but time marches on
picoamps would surprise me
nanoamps I can believe easily though
I could be wrong, but in their maximum sleep mode i believe you can get current draw that low
ok. that's not running in my book :)
you have to do crazy things with regards pin output states and the like I believe to ensure your truly in the lowest power mode
If you want it to do something then you need to spend some power ;-P
yep, 50 nA@2V typical in standby
but the ez430 dev kit is just cool ;)
If your driving a PWM out your going to be sucking some power
(for the PIC16F631/677/685/687/689/690
are they nanowatt parts?
[01:45:56] <SWPadnos> http://ww1.microchip.com/downloads/en/DeviceDoc/41262E.pdf
there may be others, I just chose the 16F series because they've been the lowest end in my experience
the nice thing about ez430 is you can get a working computer for $3
wonder how well would they run off of 2 dissimiliar metal rods in coolant
do you get 2V from that?
isn't it around 0.9-1.1V?
there are pics and AVRs that will run off .7
donno...the TI booth was using grapes
they have a built in boost converter
grapes are almost as good as ptotatoes :)
lots of acid in there
they might be better? pretty watery less internal resistance ;->
yeah, they may be
I should go see if my vfd will spin my lathe fast enough to cut the light housing
I've never experimented in that realm :)
or else the controller will have to be naked
w000 naked pics
the first time I fired up the leds for the light, I was seeing spots for about an hour
got pics of this light?
I don't do no mCds
what size LED?
it's on a 20mm board
whats 140 lumen equivalent in incandescent watts?
ok, similar to the Luxeon?
Cree XPE R2 binning
I think it's about like 10W
I think it's more like 100w
car lights are 600 lumen
yeah that sounds plausible
car lights are (halogens) only 50W
so thats ~100W incandecant
Ive got a box of 100W light bulbs in front of me, and it says 1530 lumens
W not a good measure, obviously
but it has a "feel" to it
lux are probably better
nobody uses them though
the intensity from the LED will be much higher due to the smaller size
candles works ;->
those aren't used very often either
but the total illuminance is ~1/10 of the 100W bulbs
I just want to know when i can put LED headlights in my car
I know somebody who had a sample of one
had to be real careful hooking it up
they have multiple emitters on a single substrate now
4 and 6
yeah, the difference between headlights and all the others is that the others are used as indicators, whereas the headlights are illuminators
one of the 6 emitters are supposed to put out 1000 lumen
indicators in that others need to see them, they don't have to light up the surroundings
you need big heatsinks on those
the ones I've seen anyway
one guy built a helmet light with 2
he used a fan
that will light up the road
actually, it's too bright, cops will stop you for that
car headlights cut off the top of the light
car headlights don't flash all over the place when youturn your head ;)
yeah, the high powered ones are for off-road use
I wear a 45lumen light, it's good for getting people to dim their lights
the people that don't get to stare at it for a good long time, which can't be pleasant
I'm a little worried about the light I'm building, haven't figured out how to dim it yet
uses 3 leds
right, but current controlled
generator hub is a current source too, so that part is not easy to get my head around
ok, carry on :)
the real trick will be carrying my oscilloscope along for the ride with a very long extension cord
battery + car inverter
+ lots of padding
driving the car and the bike at the same time as reading the scope is a no-no
you need an assistant
I have a 1500 lumen flashlight
but, it's HID, not LED.
since I'm powering the light myself, it has to be led
2amps, 12vdc, just pedal harder.
they make an 1100 lumen led version, but it takes almost as much
reminds me of the old saying "nothings a problem for the guy that doesn't have to do it"
you can get about 15w out of a good generator
or in this case, pay for it... the led one is us$1300.00
you need to be PWMing it based on current anyway to handle variances in supply current so just change the "target current"
I want to make some kind of precision controlled rectifier
because even the low Vf rectifier diodes take up a lot of voltage
how about a buck regulator with synchronus rectifiers
thanks, I was trying to remember what it was I wanted to do
thought of synchronous regulators the other day but forgot to look them up
use current mode control. all you need is the inner current loop
JustinXJS2_ is now known as JustinXJS2
Try to get one that will do cycle by cycle current limiting if your going to be getting sourced from a variable supply
just use a voltage regulator and resistor.. sheesh
any examples of sending nml msgs direct to motion? (are they text? binary? )
going from 300mA to 1000mA gets you like 5% gain in brightness
tomp: look at halui?
nice, somewhere along the way ubuntu upgraded the fonts in firefox
I just wish there was a way to steal a driver from Xandros and use it in Ubuntu.
how hard can stealing a driver be exactly?
I'm thinking it was compiled into the specific kernal
and Xandros isn't open source
drivers are almost always available from somewhere other than the distribution
there is a module building package for ubuntu
Skullworks, whats the function youd like?
I wish - they have cobbled up an open source version - but on a dual boot system you can see that the driver in Xandros is far superior to the Ubuntu open source offering. - This is for a Wireless "G" card
try lsmod to see your drivers, then ask the author for that good difference, sometimes they're very responsive
and theres a lot to wireless running well beside the hdwr driver, lotsa infrastructure. any diff with wired on the 2 os's?
Xandros may have different firmware from Ubuntu, and that's not covered by the GPL (so they don't have to share)
I have the Asus EeePC 900A with the 1.6GHz Intel Atom N270 CPU and it has an Altera 802.11G - the hardwired eth0 is 1000tx and works great in both O/S
Skullworks: xandros isn't open source/
ah i was using a 701 this morning, dropping skype like a hot potato (pickitup, pickitup)
i have a 701
it eoesnt have a '' key (puzzle)
a what key?
the 'd' btn top is missing, i have to lean on the little brass bits
yeah Xandros isn't open source and Asus isn't trying to help.
seriously, if you got a kernel with a binary blob compiled into it, they have to give you the source code
you calling a Pig or a lawyer?
it's unlikely that the binary blob is compiled in
it's most likely loaded via the firmware interface
so it's bundled along with the open source driver, it's not open source itself
at least that would be my assumption
btw is by the way and back to work
boiling tea water
I think Xandros came down like MAC OSX, Maybe BSD or other roots
no, Xandros is Linux
at least it was at the start
Skullworks, have you looked here? ftp://ftp2.xandros.com/src/
I had the system running dual boot with eeebuntu, and I think they used what info they could get when they built the existing open driver.
had EMC sim running real nice with mini/tkemc/xemc - Axis was a known no go.
[05:18:53] <SWPadnos> http://support.asus.com/download/download.aspx?modelname=Eee%20PC%20900/XP&SLanguage=en-us
but the eeebuntu wireless was weak, the hardware was just not being managed properly.
wifi cards need firmware. that firmware may be different for the Xandros distro, due to NDA/licensing agreements. you might be able to copy the Xandros firmware over to the Ubuntu partition and use it (after suitable renaming, possibly)
there are even issues with disconnects on the supported Intel wifi chipsets, but they're working on it (and it's the same on all distros, since that driver is part of the kernel)
that would be the ticket - if I was that good a hacker.
cp /path/to/xandros/partition/whatever_file_it_is /lib/firmware/wherever_it_goes_on_ubuntu
I real tweaked out the eeebuntu install - it was really nice - but people kept killing it.
there probably aren't a lot of files in the Xandros firmware tree, since they know exactly what hardware will be
how exactly do you kill ubuntu?
I had it running from a 16GB class 6 SDHC in the built in card reader slot - it really gets scrambled when someone removes the SDHC card while the PC was running.
funny thing is the Class 6 SDHC card was faster than the cheapo OED 4GB internal SSD it came with.
so i hear..
* fenn impatiently waits for 16GB card to arrive
got mine for $24.95 shipped from Newegg.
me too, probably about the same time you ordered it
I got mine 2wk of JAN
What was the real pain was I was down in Guaymas when the unit went FUBAR. No external Opticals with me to effect repairs
I want to get one of these, and rig it to dual boot with XP - I still need XP for Solidworks. http://www.mydigitaldiscount.com/ProductDetail.jsp?LISTID=8000092A-1231822185#productphotos
if your using the 901 take a squiz at moblin
If its got SSE3 in it you can run it
and get a 5 second boot
I have the 900A
whats the cpu?
Intel Atom 1.6GHz
yeah it should work, give it a try
~300mb and boots off a usb key
is it a read only or full R/W?
i only have a 701 so it didn't boot propperly
i *think* the usb image might be RW
That sounds like an assumption.
being at work baad
well its good for me, i have a week off work, yay!
boss was talking yesterday about next week being a "holiday"
not a permenant one i hope
i cant believe how many small engineering businesses round here are going pop, its bloody sad, there wont be any left soon!
It's a beautiful day in the neighborhood....
skunkworks186 is now known as skunkworks_
you could be indoors breathing the smoke from your drive :)
Smoke? what is this smoke you are talking about?
I wonder if anyone sells small rack mounts locally.
you have a CnC machine go get some angle iron ;-P
I wonder if I could talk the machine shop into making a simple frame..
I'm sure money could convince them ;->
skunkworks_ you want the rack or the box?
music stores often have racks
ordered one from tiger direct
suprisingly newegg doesn't have small ones.
That I could find
fenn_ is now known as fenn
just playing around with halui_pyvcp using emc2.2.8 went and got the xml hal files from the CVS and I get emc/task/emctask.cc 312: interp_error: Unable to open file
Unable to open file
emc/task/emctaskmain.cc 2629: can't initialize interpreter
emc/usr_intf/emcsh.cc 3813: can't connect to emc
Shutting down and cleaning up EMC2...
do I need to wait for 3.2
I'm not sure what you did to get that error
alSMT_: if you want to use halui_pyvcp with 2.2.8 there's a minor change you need to make
SWPadnos here will tell you what to do ;)
I'm also unsure why you had to go to CVS to get an XML file
it's the missing SHMEM KEY
thanks a lot Alex :)
SWPadnos: gotta run, let me grab a reverse diff
ok, SHMEM_KEYs have nothing to do with XML :)
ok, do as you like :)
no, but they do with the whole config
which didn't exist for 2.2.8
oh, and hal, which is right after xml :)
[15:55:43] <alex_joni> http://cvs.linuxcnc.org/cvs/emc2/configs/motenc/motenc.ini.diff?r1=1.14;r2=1.15;f=h
[15:55:47] <alex_joni> http://cvs.linuxcnc.org/cvs/emc2/configs/common/core_servo.hal.diff?r1=1.11;r2=1.12;f=h
alSMT_: basicly add the things that have gotten removed on the left
was the pyvcp demo not included in 2.2.8?
bbl for real now ;)
alSMT_, even better would be to install 2.3beta2 :)
[15:57:01] <SWPadnos> http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?UpdatingTo2.3
I am using vcp and that gets removed so I'm looking at the options
alSMT_: let us know what options you are missing
I doubt there are nay..
core_stepper.hal:7: exit value: 1
core_stepper.hal:7: insmod failed, returned -1
Shutting down and cleaning up EMC2...
i,m using core_stepper.hal
emc/task/emctask.cc 312: interp_error: Unable to open file
Unable to open file
emc/task/emctaskmain.cc 2629: can't initialize interpreter
emc/usr_intf/emcsh.cc 3813: can't connect to emc
did you modify core_stepper.hal ?
the Unable to open file sounds like you're missing a .var file
or a .tbl file
can you put the config somewhere online?
(all files in that folder)
it w3as the var file thanks
what's a reasonable update rate for a keypad?
should I scan for input every 100ms?
and the keypad is designed for normal folk, not the ones afflicted with parkinson's
debounce is the mantra for kb scanning
and that depends on key technology
maddash: start with 50-100ms, then see how it feels
it depends on how many keys you have, how they are connected, etc
some of the click type can oscillate on contact
seen some evil scope traces
less than 100ms
i guess 10ms would be ok
here's a fun project that will answer your question: scan at a super high speed and log all the data, then graph keypresses and see what the typical delay between keystrokes is
how am i supposed to debounce with a microcontroller?
Im abusing my cnc pc, using it as a build slave while emc is running to see if it handles it
catch closure wait, then poll for release
maddash, it depends on why you're debouncing
SWPadnos: shitty switch?
also on the speed you expect keys to be pressed
ok, that's different from "noisy wire"
if you expect not much induced noise - ie no false trips - but you may have noisy contacts, then you can respond immediately to a switch closure
seen switches that make a noisy wire look quiet
or you can do something simple like AND the previous reading and the current reading and using that
hence the wait for release
(that gives a 2-sample requirement0
right, then you have a timer on the release
bounce can be 16ish khz
or a delay before another keypress will be recognized
I usually have a 1ms to 4ms scan loop in microcontroller projects
and I use between 2 and 10 samples
if you don't care about responding absolutely immediately, you can do the following (but it takes a little more time and memory than the simple AND):
those dimple click switches are probably the worst
keep a buffer of N samples
each time a new sample is read, compute the AND of all samples and the OR of all samples
if the two values are the same, you have a stable reading
bah, disregard that, i found my solution
a cap often works better anyway :)
SWPadnos: hey how'd you know?
actually, i'm trying to avoid a software-based method because I'm running on a microcontroller
well, I do this kind of thing from time to time
an AVR can do the simpler calculations in about 8 clock cycles
resistor + capacitor (in series) + schmitt trigger
that's assuming you need to access SRAM
The way i have done it in the past is to trigger on the "release" of the button
that works but can be counterintuitive for the user
or to trigger on the instant, but then lockout for a set period
"I pressed the button and nothing happened"
yeah, just gotta edumacate people
it also prevents repeat or operations that depend on hold time
in the application it works better
i meant its a timer application
it seems to work ok
oh crrap, repeats
yeah, it depends on the application
my arrow just flew off my lcd
in some applications, you want repeat for some keys (or in some modes), but not for others
Like i said, easy way is to trigger on the press then just let it sit for a while
in my timer app i had an event loop that ran at about 4Hz or so
If there was a change in state on the pin it started acting and flagged the event loop for 2 cycles to ignore it untill it cleared
actually i think you are right, that was the LED update loop
It actually ran at 200Hz or so
[17:27:45] <alex_joni> http://divajutta.com/doctormo/ubunchu/ubunchu-episode-01.pdf
hello, Im new to the whole emc2 software and I'm tring to do some tutorals found in the integrators hand book, I try to use the "halscope" and get a "halscope gtk warning **:locale not supported by C library. Using the fallback 'c' library"....any suggestions on how to fix this issue??
what is your locale?
don't know, im a newbi to this whole system
it looks like you're in Miami. do you have your PC set up for a non-english language?
what language do you use?
where do you see that warning?
when i try to run hal scope in the terminal window
in your shell type `echo $LANG'
kk one sec
try echo $LANGUAGE too
that seems ok..
is there also an error? or just that warning?
just the error
en_us.UFT-8 is invalid
are you sure that's what it says?
err en_US.UFT-8 I mean (what you typed)
one sec ill try again
that would both explain the error and be extremely weird
en_US.UTF-8 sorry mistyped
ok, that's a very normal locale... I don't understand your error.
maybe a bad install of emc2
how did you install?
(emc2 liveCD, Ubuntu liveCD then EMC2 install, other method ...)
cradek has kicked IRSeekBot3 from #emc
be gone foul foe
yay, I remembered how to do that
hehe it just had a kickban in #mysql
Guest163: is there another error message?
does halscope come up?
no, just that one about the bad locale C
yes it halscope comes up but I cant connect it to anyhing i set up
well ill try to re install eveything and start from scrach
hang on a bit
maybe there's something usefull/needed from you :)
(if you're not in a hurry ..)
no, just sitting here at work, so im getting paid to chill
im rebuilding an old cnc and hoping to retrofit it with a pc with emc2 to it
Guest163: what you could try is doing it from the LiveCD
that way you don't bork the install (which might be ok), and you prove that it works
well if i have anymore issues ill be back as <jojo> insted of <Guest###>
you're most welcome
ubunchu is the japanese word for 'Debian is too hard for me'
is it just me or is that pdf full of words/thought bubbles randomly scattered on each page?
are there supposed to be pictures to tie down the dialogue bubbles?
maddash: it's just you
[18:07:31] <skunkworks_> http://www.youtube.com/watch?v=MV6ogckf3n8
SWPadnos_ is now known as SWPadnos
L84Supper_ is now known as L84Supper
haha, great engineering: http://failblog.org/2009/04/09/camaro-fail/
huh. now why would you put huge back tired on a front wheel drive car?
(I'm assuming it's FWD due to the failure mode)
I don't think so
I'd say it's RWD
but too much torque on the wheels
I would expect RWD, but then the car should have flipped, rather than leaving the back tires behind
if the fixing would have been ok, the nose should have come up
like in a regular dragster
there was an anti rotation bar to the axle that failed :)
camaros are all rwd
I thought that, but didn't have a mental picture of how that failure could occur
I think the oversize tires hit the body of the car hard enough cause the axle to rip away
is this a problem? Starting EMC2...
ULAPI: WARNING: module 'HAL_classicladder' failed to delete shmem 03
good night all
Sweet, I got a freq in
if I'm sending a pulse into encoder.0.phase-A should the velocity be 0?
or do I need the encoder to be updated on the base thread?
looks like the pulses are on for about 600uSec on the hal scope
or do I need to have both functions addf to the servo-thread
well the last guess was correct :)
should the single pulse go into A or B and should X4 be off?
[22:58:46] <BJT-Hardy> http://imagebin.ca/view/C9gpRvo.html
Been looking at the HAL Handbook and specifically, the NET command. I think I understand it, but are the following NET commands equivalent?
net signalname component.source-pin => component.reader-pin
net signalname component.reader-pin <= component.source-pin
which manual are you reading?
So since you can only have one source, it would be best to always make it first?
what ever is easier for you to read
The Feb 2009 Hand book, and the March 2009 Integrators Manual.
The Hand book did not say (that I could find) that there could only be one source pin, but the IM did. Makes sense, but I searched the Handbook long an hard before I looked in the IM.
do you mean the users manual? and the integrators manual
if it says handbook I think it is old
Is net signalname component.reader1-pin <= component.source-pin signalname component.reader2-pin valid, but weird?
The first page says:
The HAL (Hardware Abstraction Layer) Handbook
February 4, 2009
is this the section you were reading in the integrators manual http://www.linuxcnc.org/docview/devel/html//hal_basic_hal.html
Yes 1.1.4 on your web page, but I was looking at 9.1.4 net in the PDF version. The PDF version is easier to search.
But the information looks to be the same, even though the section numbers do not match.
yea, they get hosed up when I cut them up for the html's
did you find the 9.1.4 section easy to understand?
Yes it was good. I had seen it before but could not remember it, so I was searching the Handbook to find it again. Then I realized it must have been in the IM. All the different manual's content sometimes run together when things are new.
Thanks, I've spent a lot of time trying to make each one unique but there is some overlap
I was adding some comments to a new component that I cloned from jepler's Arduino to help me understand it.
So far, I think that they are pretty good! There is just a lot of information to absorb.
that's for sure
now if I could just figure out why I'm not getting what I expeced I'll understand the encoder component more than I do now :)
It would be nice if you could package all the PDF books up in a zip file so that I can download and refresh my doc versions. I sometimes wonder if I have the latest.
I'm constantly updating them so the latest ones are on the web site