hey cool charcoal works good for casting too
anyone feel like building an amd64 RT debian etch kernel? i tried about 5 times and can't get it to boot... DOH!
ohiopctechDOTcom is now known as chr0n1c
time to read up on vector math
yo ho ho
you were asking at one point if there were any more of the etch-a-sketch PCB's?
Skullworks-PGAB: yep =)
how a bout a kit - includes all components for $21 (and PCB)
not EXACTLY the same but almost
you have a kit?
kit has no DB 25
so you need a breakout
[02:27:18] <Skullworks-PGAB> http://www.solarbotics.com/products/index.php?scdfa-250100084-viewDetail-productzq3965zq4categoryzq31=true
check that out - and the links to the schematic
I've bought 3 of these.
Skullworks-PGAB: Thanks, I like jepler's becuase of the 1) two axis and 2) minimilistic components. I can buy those motors here, but can't test the torque (for myself) unless I can drive them.
idiot proof directions ( until there is an upgraded idiot )
3) and that it runs off of 12v
its basicall the same circuit
will run off anything over 5.6v
up to 26V as shipped
is dual axis
but $70 too
has better voltage reg (1amp)
$17 + shipping
that includes all components
no motors though
its just the dual H-bridge with its own 5v power supply
I want to make/build/sell a whole system for under $250 + S&H, less the PC
less the spindle too
I don't know if that's possible, but it be nice
Skullworks-PGAB: It's own PS???
oh, the regulator
yeah makes its own 5vdc and can suplly power for other devices
I looked at that package deal and said it would cost me more in my own time just to round up all the loose components...
Jymmm: go servos - higher selling point and really almost as cheap.
and you can gang the dual bridge to a single axis with a few mods
skunkworks: cna you find CHEAP servos?
as in under $5
jym - the motors can be had pretty cheap - its the encoders that will jack up the cost
When I earlier said complete system for $250, I'm including the machine as well.
oh - under 5 might be hard.. But it also depends on you definition of 'servo'
[02:51:02] <skunkworks> http://www.surpluscenter.com/item.asp?UID=2007062621461319&item=10-2351&catname=
those are on the big size - and a bit out of your price range
cheapest encoder is U.S Digital E4P and you have to buy like 50pcs to get the good bulk pricing
while it works - and can go up to 300 lines (1200 quad) it has no index channel.
router people may not care
but mill or lathe people are going to want index
LOL, guys... you're not hearing me... I mean driver, motors, PSU, leadscrew, couplers, hardware, spindle mount, linear rails (?!), bearings, the frame of a gantry router, etc ***ALL*** for $250 or less.
Mind you, the gantry frame might be made out of EPS, but you get the idea.
uh huh. and ball screws - you need ball screws
skunkworks: preloaded ones
and and brushless servos
skunkworks: I am serious though.
We are not talking fast, or accurate, or solid, but something that is functional.
have you seen all the machines people build out of mdf and drawer slides?
or water pipe?
Jym its a nice dream, but I think gas would have to drop to $0.79/gal before you will get anywhere close to a $250 price for all that.
Yep, this is not that. This is somehting where you are more learning how CNC works, and when you're done you can at least create "something" with it, but not invest a serious amount of $$$$$
I mean you might only be able to CNC playdo, but at least it's functional.
I could easily make it cheap if I had a mold injection machine =)
(and knew how to use the darn thing =)
injection molds are more expensive than the machine is
just uh, sayin'
toastydeath: I could make the entire frame of the gantry router for apx $3/ea in qty
with the holes already in the right spots and everything.
what does that have to do with injection machines though
toastydeath: think about it
mold inject eh grnatry frame
so you're probably talking about 80-120 grand per mold
for a simple mold, anyway
for a taig/sherline sized machine
more like $15K
who is making your mold?
you got a quote?
15k is like, the price i hear quoted for small parts that have no features other than a plain cavity and core, like a tiny cup
i mean you might have found some crazy moldmaker
offering BARGAIN BIN PRICES
maybe a chineese shop might quote that low
but even then
03jmkasunich 07v2_1_branch * 10emc2/debian/changelog: update changelog - 5i20 fixes
that was a year ago or so
pico = 10^-?
how many decimal places
so 100nf = 1pf ?
no, 1000pf = 1nf
looking at old schematic (while half asleep)
nan = 10^-9
if it's really old, beware the units may not be what you expect
* Skullworks-PGAB hooks Jym up to a 1000V 1DekaFarad cap....
not that old - but I know what you mean about how notatios for capacitors has changed over the years.
How to read Capacitor Codes http://xtronics.com/kits/ccode.htm
searching ebay for a transformer for a big servo power supply - guess this is overkill - http://cgi.ebay.com/Transformer-1500-KVA-3-phase-Substation_W0QQitemZ160132064078QQihZ006QQcategoryZ71390QQrdZ1QQcmdZViewItem
Skullworks-PGAB: one per axis hould just about cover it
Skullworks-PGAB: Now, here ya go... one xmfr for all 3 axis http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=160131366058&ssPageName=MERC_VI_RCRX_Pr4_PcY_BIN_Stores_IT&refitem=160132064078&itemcount=4&refwidgetloc=active_view_item&usedrule1=CrossSell_LogicX&refwidgettype=cross_promot_widget
only if it comes with 10yrs worth of power.
Skullworks-PGAB: start peddling that bicycle generator of yours
that flows power in the megawatt/second rate
flashback to EDM topic
CL (ladder) can read I/O for status (such as tool changer) - so could CL update a system variable?
* Skullworks-PGAB just looked at the time and panic attack struck - have to be up for work in 4 hrs.
bah it is only work
but 12hr shifts are a real killer
not if you spend 8 of it sleeping ;)
what do you do?
CNC setup lead - at a manufacturing plant www.mincomfg.com
oh real work not like Jymmm ;)
* ds2 ducks
running around on concrete - ducking robots - (and idiots) fixing machine crashes where the operator loads a part backwards etc.
Its still zombie work compared to the tool & die and custom prototype work I was doing a few years back - but this pays More (after all the OT).
Off to snooze awhile.
03petev 07TRUNK * 10emc2/src/hal/components/boss_plc.c: -Added feed hold on spindle speed changes when spindle is on.
is there a canned spiral goove (like screw cut but wider)
03jepler 07TRUNK * 10emc2/src/emc/rs274ngc/interp_convert.cc: SF#1734578: spindle spinning is a precondition of g33, g33.1
Yo ho ho and a bottle of rum!
ohoy you scurvy seadog
Ship ahoy !
fire the canons!
"You sunk my battleship!"
A pence for an old man o'de sea?
The box I got yesterday has a battery chrager and a 12Ah gel-cell, Just tested the charger and it works! Seeing now if there's any life left in the battery! Either way, I'm jazzed as this charge can supply 6A at 12 or 24VDC
Still the guns and stow 'em, Signal the men, set the flags and make good to clear port.
It's the kind of charger that's used in alarm/cctv system... Supplys 12/24V and battery backup + charger
anonimasu: I use it for emergency comms power. The one I have now, only supplies 2A
Zero voltage drop with the loss of mains.
anonimasu: shut up!
Now, I have to figure out how to intergrate my solar blanket into it.
I got my new voltage sensor/breakouts last night which is supposed to be able to stand up to the High Frequency interference
This weekend is looking good for a whole lot of plasma cutting
like a breakout board?
JymmmmEMC: yeah, built in breakout with very robust opto isolation
JymmmmEMC: it's the same basic design as the one I had before but it's got more features and a new sensor design
JymmmmEMC: I can also do cool things like change the voltage settings on the fly (I can sense the cutting material thickness and automatically change the amperage and ask the user to change consumables)
dallur: this is all done in hal?
skunkworks: I have not done the sensing/amperage changes but they would be yes, all the current stuff is done in hal
Dallur: very cool =)
I was thinking the other day that just hal could be used for tracking the sun.. I think.
skunkworks: have you seen the open office object diagram I made for the thc config ?
I don't think so
I will look at it tonight.
skunkworks: just a sec, it's a good indication of what can be done with hal though
I will need to change a thing or two to fully use all the features in this thc rather than the one I had but 99.9% will be the same
I wonder what the serial interface looks like though, is anyone here using serial for control ?
Dallur: Yeah, but not for CNC control =) http://www.universal-radio.com/catalog/fm_txvrs/4116lrg.gif
JymmmmEMC: Well if I want to be able to set the desired voltage from EMC I will need to figure out a way to communicate with the box via serial
SWPadnos_ is now known as SWPadnos
Heh, cool... I can use a Solar battery controller in this panel! WooHoo!
Now, to try and figure out how to add a 12V source to it
* robin_sz is tired
long hard week
robin_sz: well, work hard at a couple 6packs over the weekend
things to do this weekend
id rather not waste it
had to fix the laser twice today
I hear ya there... I'm workign harder at home than I have been at work. Well, except for last night... fir alarm went off, and to walk thru the WHOLE bldg, and this is a HUGE bldg!
let it burn
its insured ;)
Yeah, well when the comptroller asks, you do (he signs the paychecks =)
so the laser first blew a fuse ... turned out to be one of 4 fans on one of the heatsinks had failed
took 4 hours to find a fan
no sooner was that fixed ...
2 hours later it blows a hose in the head
like EVERYWHERE ....
I want hi
voltage rock and roll?
went to look at another laser this week
"slightly worn" would be one description
utterely knackered would be another
Dallur: a userspace HAL component can use linux serial drivers to communicate with serial devices, as long as realtime guarantees are not required
robin_sz: was it cheap/free?
cheap ish ... not free by any means
the resonator is 'twisted' ... some sort of alignment problem withthe mirrors
robin_sz: you think you could fix it?
anonimasu, well, the laser service guys I have spoken too tell me many have tried to fix the exact same problem in the past
none have succeeded
robin_sz: YOU CAN DO IT!
its a factory cleanroom job
robin_sz: why not?
anonimasu, of course, I think I can do it ;)
robin_sz: what makes it a cleanroom job?
cleanroom is the wrong phrase maybe
robin_sz: Just keep saying to yourself.. "I think I can! I think I can Ithink I can..."
JymmmmEMC, nah .. "I know I can .. I know I can ... "
anonimasu, silly high accuracy alignments etc
lol, even better! But is it worth it? How many hours are on it?
JymmmmEMC, how many hours to fix it or how many hours has it run?
how man hours is on it
JymmmmEMC, how many hours to fix it or how many hours has it run?
has it run
oh, tens of thousands
but, thats not a problem
the moving bits are OK, the roots blower has been serviced etc
its just a question of alinging a few mirrors
to within 0.5 mrad
that shouldn't be a problem.
robin_sz: can the service guys do it for you?
anonimasu, nope, none of the field service guys can do it
its a factory job
hm, that sucks..
how do you plan on aligning them?
do you have enough stuff to measure that?
even the long standing service guys, one who did 20 years with the factory .. he saw every part of the factory but was never allowed intot he laser alignment facility
or can you ship the resonator tothem?
would that be cheaper?
they can do it on a 10 day turnaround, no problem
and how much $?=
buy a big cnc lathe.
sounds like alot of money to turn a few alignment screws :)
seriously for aligning?
"I know I can ... I know I can ..."
+- less than a knats cock
how small is a mrad?
0.5 mrad is not alot
its 1/1000th of a rad
divided by 2
the price actually
sure it's brutal precision but that much $$$
"I know I can ... I know I can ..."
robin_sz: if you can take the dive and pay for the alignment again.. I guess its sane...
but ... what if I can tweak it in myself?
that's like beating a wrapped spindle right with a small hammer..
maybe i can make a nice bit of money doing the same job for other people?
what kind of thing will you use for measuring?
(good luck have fun)
robin_sz: I doubt your eyeball MK1
seeing is believing
"caution, high power laser. do not stare into beam with remaining eye"
bah that's nearly 2 arcminutes
jepler: how big is a arcminute?
> < that big
* robin_sz nods
(or 1/60 of a degree)
that I can grasp
anonimasu: units 'arcminute' 'milli radian' => * 0.29088821
that's not super small..
(and an arcsecond is 4.84 microradians)
the mazak variaxis mills have more positioning accuracy on the A axis.. ;)
2 arcminutes is fairly cute
I got a ad in the mail, 0.000001 degree minimum increment..
I got an add in the mail, get viagra cheap.
robin_sz: ah figures you are at that age soon.
"they say at my age, sex can be dangerous"
hm, kill yourself :D
"well, if she dies .... she dies "
In THIS day and age, any sex is dangerous.... AIDS, that shit kills people!
groucho marx said that
*has no clue who that is either*
anonimasu: you dont know who Groucho MArx is?!
there aint no sanity clause
anonimasu: He was the Eddie Murphy/Robin Williams/Carlos Mencia of comedy (and movies) of his hayday.
robin_sz: I hope you can do it :)
[21:05:33] <anonimasu> http://www.groucho-marx.com/
I've heard lots of thoose one-liners before
my connection really sucks tonight
feoc: Advice from pigeons.... FEED THE PIGEONS!
feoc: Advice from pigeons.... FEED THE PIGEONS!
JymmmmEMC, this is not exactly new
robin_sz: It was in respect to: 03:04:08 PM) feoc: my connection really sucks tonight
Damn... still need to figure out how to charge/supply from 13.8VDC =(
robin_sz: I got a 120VAC to 12VDC charger/supply @6A last night. I figured out how to uses the solar pnales I have to charge when mains is out, but not 13.8VDC source, like from a car.
toastydeath: Living in the 60's I see =)
JymmmmEMC, 12v batteries are 13.8 even the sealed types the 12v is nominal
archivist: ok, and?
* robin_sz cant understand JymmmmEMC 's question
your 12v charger should really be 13.8
robin_sz: I want to be able to charge the batteries AND be able to supply at least 6A.
from a car
need more pidgeon food :(
robin_sz: I don't have a method to charge/supply that. Only 120VAC and Solar Panels.
supplying 6A at 12V from car is easy enough
surely charging a car battery is easy .. you just start the car?
robin_sz: Not car battery, gel-cell
so .. you have a battery ...
and a 120 to 12V charger ...
problem solved, no?
That's the 120VAC side
Here's the solar side: http://www.siliconsolar.com/Sunlight-10A-12V-Charge-Controller-p-16669.html
right 120 to 12V
so you cant use that to charge the battery with, obviously
the solar? Yeah you can
yes the solar.
not the 120 to 12V
a 12V dc suppky wotn charge a 12V battery
read the desc, it's not JSUT a PS
13.6 or whatever..
I need to be able to pull 6A as well as be able to charge the battery.
so its a battery backed 12V 6A supply and you can also chareg the battery from a solar cell
you can charge with less, just slowly..
if 120vac is out, switch to car, if no car, switch to solar.
so what exactly CAN'T you do?
I need to be able to charge/supply from car still w/o overcharging the battery.
and draw 6A
car alternator ...
one to car battery
one to your gel battery
car alternator will cook a gel
robin_sz: well, why do it the easy way..
I don't want to overcharge the battery, a la trickle/float mode.
well, a automotive gel battery will survive it..
anonimasu, good point
what's the terminal voltage for a gel?
robin_sz: use the right thing at the right place..
isn't that the same as a wet lead acid?
gels are lead acid
I guess a gel won't let you keep it bubbling?
wtf.. with a automotive gel battery there's no probelm.
Damn, this is close... http://www.rason.org/Projects/gelcell/gelcell.htm
it is true
ds2, if that were the case almost every modenr motorbike would be dead already
ds2, all modern bikes use gel cells
robin_sz: then what's the big deal with the alternator charging it?
most race cars use gel too
ds2, none ...
ds2, there is no big deal
that's how I know..
ds2, its just JymmmmEMC likes to complciate things ;)
these aren't automotive batteries
JymmmmEMC: well, buy a charger.
ds2, if you have 2 cells on a alternator, you have to split the output with diodes
anonimasu: find one that works of car
JymmmmEMC: we sell them..
they cost 150eur.
I cant remember
who makes them
I'll check for you tomorrow
anonimasu: you just said you seel them
yeah, not online
JymmmmEMC: like in the store at work..
ds2, if you dont put a diode split in, you can drain the car battery when you drain the utility battery to zero .. then not charge the car
fskin pigeons :P
anonimasu: can you have a 6A load on them?
ds2, if you dont put a diode split in, you can drain the car battery when you drain the utility battery to zero .. then not be able to start the car
I think the smallest ones had a peak output of 14A
robin_sz: gotcha... it is more of load isolation
6a isnt much for most batts
thought something insidious when it is charging ;)
ive designed multiple systems like this in professional outside broadcast vehicles
err actually more.. lots more..
I don't like the diode since it may prevent a full charge... much rather have something more complicated with a relay to detect if engine is running before putting it inline
I think he was using one of the alarm types
ds2, imagine a vehicle with 2 sets of batteries, one for equipment, one for the vehicle starting etc, an on-baord generator, mains to DC supplies, DC to mains invertors, 2 incoming separate mains feeds (main and spare) and .. a power panel to make sure it all worked .. with "normal" and "maintained" bussbars ... etc
robin_sz, I have an OB truck at home
archivist, ex BBC?
with the machines?
lots missing when i got it
2 ampex 1" machines?
it last had sony bvh2000
not quite so nice, but same idea
started out with ampex quad
yeah, I worked on quad a bit
thats going back some
[22:58:17] <anonimasu> http://www.io23.net/files/frame.png
some grotty pics at www.archivist.info/obtruck
archivist, fwiw, I did 15 years with the BBC variously in comms, studios and finally post production maintenance
anyone got a good clue on how to clamp that part?
drill the small holes then use them to clamp?
anonimasu: get some bandwidth already
archivist, ooh, I see it has the Link PLUGE generator in the rack
JymmmmEMC: I have plenty
the peering should be fast too
JymmmmEMC: stop the DDoS!
anonimasu: seriously, get some bandwidth... still trying to load that image
sure it isnt a nameserver issue?
anonimasu: what's the ip address?
[23:02:00] <anonimasu> http://188.8.131.52/files/frame.png
anonimasu: is that running on a Z80 somewhere?
archivist, as a matter of interest, have you thought about holding your camera still while taking pictures?
pops right up for me.
web server is not responding
anonimasu: nope, not a dns issue
it connects but the GET on the object hangs
robin_sz, they are pics of pics, they need scanning
I did say grotty
does it work now?
not for a living its a toy now
The image “http://www.io23.net/files/frame.png”
cannot be displayed, because it contains errors.
archivist, , one shot has an LDK5 outside the door, you got the LDK5 too?
wtf.. get a better browser.. :)
let me try
with the Scneider lens?
they are failing though
works for me
got half of it and its been... 5 minutes?
archivist, yeah? failing?
yes luvly lenses
JymmmmEMC: did the other images work?
anonimasu: oh well
servos in the leses are a bit tempremental
anonimasu: I gave up now.
yes comms over the cable and psu dropping out
JymmmmEMC: did the other stuff work?
archivist, probably in need of a load of caps
anonimasu: I gave up looking, way too long to load a single image.
did the other ones load properly?
archivist, tubes in good order?
I have two high band umatics in it now
I have some spare tubes
[23:06:09] <anonimasu> http://graphicaddicts.net/imgbin/kZ4.png
stored vertically I hope?
[23:07:11] <anonimasu> http://imagebin.org/9126
archivist: thats an old bus :)
its a 7 ton lorry
anonimasu: that worked (finally)
[23:07:34] <anonimasu> http://imagebin.org/9127
early 80's ?
too late to work out what T reg is :)
1978 and a mid 80's refit
the last one if the complete thing
archivist: whatcha do with it ?
archivist, I was on the OB maint team at pebble mill for quite a while, w had SCV6, CM1, CM2 and about 4 comms trucks, an eagle tower etc
I did a fair bit on LDK5s and LDK14s
heh Im at burton on trent just up the road
I did 6 months at BBC nottingham once
its got some cough itv stuff in the truck now
many years ago ...
we had ... hmm ...
* robin_sz tries to remember the cameras at notts
no, it was link 110
it was link 125 we had at pm
I have a 4 tube in the shed
that will take a lot of work to get going
was that 25 or 30mm plumbicons?
the ice block must be interesting
I have a spare in the front window which confuses people
see? I know a bit more about telly stuff than yor average sheetmetal worker
hehe and er meeee
tv geeks :)
I lost interest when the place got full of avids
tv engineer-> electronics engineer-> clock maker
and editors and profesionals where replaced with 19 year old idiots
broadcate engineer -> programmer -> metalworker
I missed out my programming bit
still do some
In respect to the 2% voltage drop across the resistor, http://www.davehylands.com/Machinist/CNC/CNC-Controller/Small/01-Condition-Caps.html
Does that mean remove power when the voltage across the resistor is about 45V (assuming the source is 48V) ?
or about 3V ?
which? 45 or 3 ?
thus the word "about"
2% of 45 is?
45 accross the cap or 3 or less accross the res
how old are thes caps?
but as the site says nearer the 1%
could be dry as a nuns...
It's kinda confusing first he says 1K, then he says 100 ohms
its both one after the other
I wouldtn worry
that's not what the pic shows
read the words
if thye are that bad, only use them if you can;t find a replacement
conditioning caps is usually only for vintage things in radiois yo really dont want to put a modern cap in
if they are that bad, just get new ones
they'll just be leaky and low value crap even if you do manage to condition them, assuming they actually need it in the first place
exploding electrolytics are entertaining
luvly mess in tvs
I would reform or "condition" caps in some old piece of kit
but I would never dream of using caps in a new project htta started out in that condition
several kinds of crazy
hmm home time