the position capture is likely more accurate with slower velocities, and with agreeing repetition ( and stiffer machines) so, the hardness of the surface isnt very important, and being able to re-dress it may be valuable ( esp if it doesnt work as planned :)
we use this voltage drop method in sink edm all the time. i use a dowel pins & ball bearing for the 'touch plate' , very very accurate diameters and cheap & easy to get.
dowel pin for smallish work, ball bearing for large ( exaggerates dip in plane )
got a 123 block with tapped & thru holes? there's your plate
variation on EDM for wood. run a termite along a surface and anything he can reach, he can eat
people for the ethical treatment of termites
so you won't like my idea for doing complex internal cuts
no termites have been harmed in the manufacture of this product ( they were really ants dress up like termites and had small dremels )
save the ants.
Tome is now known as Guest76369
How does one identify to the NickServ? I try but keep getting -NickServ- You failed to identify in time for the nickname...
Your name choice might be in use?
/msg nickserv identify password
make sure there are no spaces before the /
and you should be using your registered nick when you do that
what is the password?
I don't think I have one...?
then you don't have a registered nickname, and you can't identify
It's a secret!
Ok, let me back up then.
you can register by changing your nick, then /msg nickserv register password
How do I register a nickname
/msg nickserv help :)
Unregistered pass words are first come etc.
your client may allow you to abbreviate that with /ns
cool, help worked thanks!
you should do all this in the freenode tab, not in a channel (like this) - in case you mistype something, you don't want it broadcast and archived
Ok, I give up on trying to register a nickname.
what name are you trying to register?
well, if someone else has it, you can't register it again
so your choice matters
MattyMatt is now known as Any
It says I am trying to regsiter Guest489
which I am not
you need to change your name first
it's free :)
Any is now known as MattyMatt
then /msg nickserv register password
(or whatever the help said)
Guest489 is now known as grommit
I don't know if you noticed, but you can also ask for extra help on specific commands, like /msg nickserv help register
(which tells you that you also need to provide your email address)
so it's /msg nickserv register password email@address
welcome, grommit ;)
He's full of cheese
I'm going to guess that grommit has been registered previously
ok, bedtime for me. have fun with your new nick
Or rabbit is named shawn after the sheep
joy, that is
huh. grommit hadn't been registered
it lets me use various nicks that it says have been registered
I think a nick can be used even if registered, but if the Owner shows up, the nick can be reclaimed and the unregistered user booted
it changes it for you if you don't identify.
How do you use net to link multiple outputs from mux2 to an input.?
TD--Linux is now known as TD-Linux
[05:35:51] <elmo40> http://www.opennurbs.org/
I wonder if heeksCAD can implement some of this
Just this once .. here's the log: http://www.linuxcnc.org/irc/irc.freenode.net:6667/emc/2010-04-03.txt
[06:56:46] <awallin_> http://www.youtube.com/watch?v=LytH7eCuvDk
awallin_: very nice
awallin_: nice, but with that music you would think they cut a little faster
awallin_: thanks for making me look on youtube for more examples
morfic: need to buy a Syil X-7 or similar and outfit it with an ATC and AC-servos, that would give speed
this is a poor old Optimum BF-20 outfitted with linears, ballscrews, servos. no atc :(
i amuse myself on the "crashes" right now
don't ask why i am not sleeping
[09:20:05] <morfic> http://www.youtube.com/watch?v=Rjm90eJCjO4&feature=related
what is "too much material on your part"?
interesting kludge http://www.youtube.com/watch?v=3psLvh5ssPQ&feature=related
awallin_ does anyone ever fit those IOM with gps and send them across the Pacific by themselves?
archivist: what's the kludge? the motor/gearbox/chain?
isn't that how all rotaries were driven before steppers?
* MattyMatt bends nail a lttle more. there ya go, it's a fly cutter now
grommit is now known as grommmit
I thought you were Any :-)
only after a few drinks
Yesh, I'm the Prime Minishter!
ouch. very little survived blender->DXF->heeks
what is heeks?
Have you played with the Blender to gcode script?
It looks like it might actually work
HeeksCAD does the same thing, in python too, so I'm figuring on using both
ah blender->STL->heeks worked OK, and shows me I only exported what was selected
Good to know
STL has no concept of solids, but then neither does blender :p
heeks could make objects out of closed meshes tho
it makes 1 object per import
[13:30:41] <grommmit> http://blenderart.org/issues/
Issue 11 has an article on solid modeling with blender
aw no, step/igis export
yeah I do solid modeling all the time
and you can assign mass and CoG to an object, for physics
and you can even use 3d textures, and the knife tool, but it's still not a solid
getting close tho :) it just needs a property called PhysMat, because Material is all about surface appearance
Blender could be turned into a fine CAD/CAM program, but it'll probably cause a schism with the Freeform Organicists
It could be both, selectively...
it could indeed, but there's politics if you want to add e.g. dimensioning to the core
The article above concludes with: Solid modeling is becoming possible in blender but the development needs per- haps to consider the option to create solid objects (not meshes) to achieve mechanical models. This represents new opportunities because management for solid objects is little different than mesh- es.
a PhysMat property would do. set an object to Phy:Steel_Mild and it'll calc its own weight, surface textures etc
defining a shape in terms of cutting ops could be done at a higher level with scripts
the core GUI is mostly scriptable in 2.5 :) I should try and build that
ideally Heeks & Blender would use the same python for toolpaths
* MattyMatt is doing it for himselves
constraints are weird, there's no simple pin/sliding/ball joint choice
they can all be made, but by messing about with local axes
alex_joni: the cc on you tube is hilarious! (never played with it before.)
MattyMatt: have you toyed with this? http://www.opennurbs.org/
MattyMatt have you seen heeksart?
thats for nurbs-mesh stuff afaik
I wouldn't use a lib for nurbs, it's just bezier patches
but for Heeks it'd make sense, as it's well-defined and has a Somebody Else's Problem field erected
2.5 alpha 2 is nice :) no building required
I haven't seen heeksart
oh sweet. I have now
two questions on configuring 7i43 to run spindle motor...
P4-39 19 PWMGen 2 PWM/Up (out)
Is Up and Down equiv to Clockwise and Counter-CW?
If I have my wiring on P3 instead of P4, can I edit the .PIN file and make P4 (above) into P3 and expect it to work?
try it ;)
morfic: how goes the EMC2? have you installed and tested it on anything yet?
I would try it, but am not near the machine until monday. I am playing with it in simulation mode
EMC is going fine. I was able to move a stepper using the default file. Peter Wallace is to get me a firmware build for the 7i47 on Monday which will allow me to (hopefully) get it all working
The /PIN file reports the capabilites/pinout of a particular .BIT file, thats all, it make no sense to edit it
in up/doen PWM mode one PWM output is active for positive input commands and the other for negative input commands
So, just to be clear, I need to wire my hardware to the pins that the firmware is expecting the signals on (and not think I can reconfig it in software)?
:P you think?
why be difficult and wire it incorrectly... just like someone putting the yellow Video RCA into the white Audio location.
i guess that is one way to think about it.
I didn't think of it as "wiring incorrectly", I wired it logically (to me) and figured I would just reconfig the FPGA to know where things are.
"So, just to be clear, I need to wire my hardware to the pins that the firmware is expecting the signals on (and not think I can reconfig it in software)?"
Yes the firmware bitfiles have fixed pinouts, this doent prevent you from makin a new pinout but that involves re-compiling the FPGA config
Recompiling for a new pinout is relatively easy if you have and are used to the tools (only the pindesc file needs to be changed)
So if theres a custom pinout that makes sense I dont maind making a bitfile for that config, its usually just a matter of some cut+pasted editing and existing
pin description file to create a new one (BTW the reason that the pinouts are not dynamically changeble is that this uses a _lot_ of FPGA resources)
Ok, now that I understand it is not a runtime configuration feature, I can play by the rules. I had just misunderstood that. OTOH, it would be nice to have the tools (and instructions) available to build a cutom FW load...
The 7i47 wiring is set due to the pins being labeled for specific purposes (encoder, stepper, etc).
On 7I47 only thing that fixed is inputs vs outputs
The 7i43 (and 7i42 protection) is ultimately generic. So I figured I could wire anything I wanted anywhere...
I can change it, it isn't a big deal as I currently only have the spindle and a couple other things wired to the 7i42 as my limit switches aren't built yet.
Well for GPIO thats somewhat true (the HM2 driver has the limitation that special output functions are only enableable on a 0-n basis not individually
so that may limit what you can do
(in other works if a config has 4 PWMGENS an you want only 2, your only choice is PWMGEN 0 and 1 (driver limit, not firmware limit)
On the 7i47 it shows specificly where to wire each differential encoder input and each step/gen output at least in the instructions. That is what I meant about it being "set".
elmo77: no, not installed anywhere, it'll all be data collecting and presenting to boss only, he will decide which way he wants to go
Sure, The maunal shows a stardard pinout (we use this pinout on our test encoders for example)
but theres no physical limit on the 7I47 other than inputs and outputs are fixed
(you could have a RS-422 serial port on a RX/TX pair if you wished)
Is it just me (it may be!) or is there a lack of documentation [for a beginner] on the use of the Mesa cards?
Once I figure this out perhaps I'll send you a "Mesa cards with EMC for dummies" :-)
Well I think the vast majority of people using our cards with EMC use a 5I20, a 7I33 and 1 or 2 7I37s
They can use standard bitfiles and start with the sample HAL files so they dont get into much of this exotica
Only in that last couple of weeks have people asked to use a 7I47 with a 7I43
The good thing is that the Hostmot2 driver and firmware make it easy to support different configurations but all this flexibility
can be bewildering at first
I'm not sure if I could tell you how I ended up with the 7i43 (vs a 5i20), but I got the 7i47 after you suggested it for differential encoder inputs. So my exotica is all your fault :-)
Well its a good hardware solution, but its first time with 7I43
I am using a DigisSpeed DC-06 board to drive the spindle motor controller. It has a Step input (and Gnd), and two relay inputs (RL1, RL2) which are passed through and used to control a KB electronics KBPB-125
hi i broke my Axis Z at speed test today
someone now if i can messure the L298 if this is broken
I have the DC-06 wired to the KBPB-125 so that RL1 on/off control CW/CCW, and RL2 on/off controls Brake/Run
ther is no power at the Axis
the sterpper works if i conect to X,Y
it has to be the 297 or 298 or both
Are these just wired to GPIO pins, and the Step input wired to a PWM out on the 7i42?
grommit: how you talking to
Or myself :-)
i think everyone is sercing for eggs
I know I am!
I sure know where mine are.. no need to search for them
If its a step (rate) input I would think you should use a stepgenerator to drive it
Yes, the DC-06 uses a frequency (0-25 KHz) input so a PWMGEN is not what you want, a Stepgen in velocity mode will do what you need
( you may be able to use the stepgens DIR output for CW/CCW subject to whatver your VFD reversal limits are)
* JT-Hardinge has a new rule Put 2 things back for every 1 thing taken out!
cant be, you are supposed to have bits left over
I mean tools :)
fun part is deciding if you are going to strip a thing to put the extra back in :)
thanks for that Peter!
if tool 1 is the master tool in a turret do you touch off Z in G54 then touch off the rest of the tools in the tool table to get the Z offset from tool 1?
wow this card had 47 jumpers on it
* JT-Hardinge thinks I will take a nap as soon as I can stop the bleeding
bleeding! you been fighting with the machine and lost?
naw, just cleaning up a bit and nicked my arm my blood is so thin that it don't take much to start a river of blood coming out
I prescribe a beer with a bit of body to thicken it up
just finished the beer but it was a Mexican beer
I'm out of good dark ale
I out as well :((
drop by and we can make some
I cant afford the beer let alone a flight !
yea! the bleeding stopped now I can take a nap
hm, wrong jt
hmm - I need some more coffee.
/dcc send skunkworks_ grande_coffee
sorry, forgot cream and sugar.
look grommit knows the keycode for like space or something good boy!
just checking to see if am here
the java client had apparently crashed
my simple diy touch plate =P
cheap as cheap can be
i wish my gf was like a touch plate, never says no
OT: how to fix python not finding a file? eg "jppy: Starting..ImportError: No module named jpilot_user" ) i know where the file is, python doesnt, and i dont see how to let python know.
(seems to be how to edit sys.path dunno how thats done )
hmm found some interesting tools for milling glass
anyone got some experience doing that?
I've worked with ceramic, but never glass
I'l bet they're NOTHING alike, too
hmm sleep maybe, need my energy for building the mill today
frallzor, it'll be like drilling glass. very slow and lots of water
there are vids on youtube
water actually seems to break bonds in glass
I think sand is involved, but that depends on the tool
if you score a sheet of glass, then drip some water in it and leave it overnight, it's a lot easier to break the next day
I thought they generally ground glass
I'll try it when my mill is waterproofed
time to go die for a few hours then live again, NN
a few more coats of polyurethane, it'll be good :)
only kidding. I'll gradually replace all the wooden structure