geo01005_home I had 6 = Ax + A + Bx - B
i only used one value for x, giving me only one equation, obviously
needed to go back and do it again with another value, and now it works
its morning? damn
Valen1 is now known as Valen
Could someone tell the width of the flex strip by this photo? http://dealextreme.com/customerphotos/5111-2332d228-982d-4b01-a3cd-26ab8180f434.jpg
you have a keyboard and a pair of calipers and open office
More so by the dimensions of the resistor
the flex strip is 1.1 keys wide
the resistor could be an 0402, 0603, 0805, 1210, or 1812
[13:30:34] <jymm> http://dealextreme.com/customerphotos/5111-e7ca05bc-540e-48b9-a7d7-d499ea81d2c4.jpg
does that help?
how have you guys all been?
err, just fine
jymm, no, it doesn't help
cradek: (I'm hoping it's not that wide)
8mm, using the caliper method
hehehe, Im sorry, I didnt realize what time it was, ill be back
10 +- 3 mm
11 +/- 5 mm :)
10 +- 11 mm
[13:32:56] <jymm> http://dealextreme.com/details.dx/sku.5111
maybe you should ask them
it.s 0.31 inches wide
43.31 long by 0.31 wide by 0.08 thick, weighs 0.49 oz
dont go reading the spec thats cheating
too late. I guess I'm disqualified
cradek, next escape wheel I have to make 3.2mm od 11 teeth verge for a ladies pocket watch, worn out one arrived here today
Can that type of FlexPCB be bent to wrap around a 1/8" thick material? I haven't worked with FlexPCB like that
you have to be really careful about two things
1, the traces like to break if the bend radius is too small
(you didn't mention whether it's a 1/8" rounded corner, or just going around something like a flat bar)
2, the components tend to come unstuck when you flex the pads
I an deal with corners accordingly
that also happens with standard PCBs, but it's much worse on flex
1/8 is pretty small, so I'd be kind of surprised if it works well
I mean wrap the FlexPCB arond 1/8" sheet material like a Taco
the pcb begn the taco shell
it's the bend radius that matters, so if you're talking about rounding a 1/8" thick piece of material, you have a radius of 1/16", which is probably not good
ok, thank you
* jymm throw the drawing board in the crash
[15:30:00] <EbiDK|AWAY> http://thedailywtf.com/Articles/We-3-Concurrent-Engineering.aspx
is there a way to make the parallel port pins 1-9 inputs instead of outputs?
set the direction to in
it's in the hal_parport manual (man hal_parport)
is the development on hagui dead?
do you mean halui?
no, halgui... There is a note about it in the hal manual that says "GUI tool for configuration and tuning (Not implemented yet)"
Looks the like code has not been worked on since 2006. /src/hal/utils/halgui
yeah, there is no such program that I know of
pyvcp uses halui right?
they are not necessarily related - but sometimes used together
ohh, halui does NML stuff...
geo01005: halui is supposed to be an emc2 interface driven by HAL pins
instead of clicking on things, you just hook up buttons & knobs & leds to it
I see. So it doesn't really have anything to do with a gui, except for the fact that you can use it with virtual buttons and knobs with something like pyvcp.
it's actually halui not halgui :D
but there is some code for something called halgui.
Daniel Nilsson worked on it back in 2005 and 2006.
looks like he didn't get too far.
nope, that should probably just get removed
or geo01005 finishes it :)
some day :)
for most application I'm not sure that having a gui hal editor or a schematic hal editor is all that helpful.
I think a configuartion gui would be more astheticly pleasing.
geo01005: one of the reasons it never got done
I suspected that.
seb_kuzminsky, what happens when you have a joint running on a hm2 stepgen in velocity mode?
Does the position f-b eventually overrun?
geo01005: i guess pos-fb *would* eventually overrun, but it's a ways out there, and it's no closer in than the same joint in position mode
hmm, I don't want my machine to have windows syndrome.
It shouldn't need to be restarted every couple of weeks because a floating point number is getting large.
well, there's only 32 bits to keep track of stepper counts, so it will overflow eventually
what are you trying to do?
So I have a joint that drives a wire feed motor.
every so often (30 mins or so) I rehome this joint.
but I can't reset the stepgen at this time.
in vel mode, position-fb is not used by the stepgen driver at all, it's exported to HAL for whatever good it does up there
So I was just calculating a offset value (Float)
Yeah, but my homing procedure needs position feedback.
I guess I should change my homing procedure to use the count value instead of the position-fb.
would a stepgen.reset pin, analogous to encoder.reset, be helpful?
it would...but I don't know if it is worth you doing it.
isnt homing done above hal?
yeah, sorry... once again this system doesn't use emc.
just the hal
ah, so "homing" is done in your code above hal
Yeah, I created a hal component that does the homing and motion control for each of the joints in the machine.
I suppose I should just change it to use counts... I suppose that is the more correct way anyhow.
pos-fb has sub-step precision, which is sometimes what you want and sometimes not what you want...
it was just easy to use because it was in position units.
pos-fb is float, counts is s32, so counts is what may overflow and wrap around
ahh, I see.
That would be bad.
well it would actually be ok.
as long as it didn't happen in the middle of homing a joint.
what does homing mean in this context?
Well so the wire is being melted at a fairly constant rate,
so for the most part, for a short period of time I have a good estimate of where the end of the wire is.
however after some time I need to back the wire up and "Home" it with a proximity sensor.
( the position of the wire determines how fast it is melted)
you move the wire-feeder thingy over to a touch-sensor thingy and feed it out until it trips the switch, then you call that home?
or at least a know position.
so if it zeroed the counts (and hence the position-fb) when the touch-sensor tripped, that'd be you taken care of?
But I can do that will a little more effort in my component.
I'm not sure that it is useful for anyone else.
hmm, I just calculated how long it would take for the count s32 to overun....about 10 years...
fairly slow feedrate.
I think that it will be ok.
I think that the lifetime of this machine will be about 5 years.
And it will certainly be turned on and off more than once in that time.
it is thinking like this that leads to y2k isn't it?
"by the time it overflows, we'll just switch to 64-bit machines"
inc a flag to set it /me suffered that one
ok geo, i'll continue my time-honored tradition of not taking any action, then
ok, thanks for the help :)
you mean, thanks for not helping ;-)
don't for get about SPI ;)
Hmmm, Did this get wefully expensive, or is it a different one than a year or so ago... http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=93885
are you thinking of this? http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=44991
or this? http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=47158
iirc the hoff thingy is based on 44991
flimsy looking column on it though
it is what it is.
I have stiffened the column on mine a lot, a serious difference
I dont see what the diff is other than chuck size
and a DC motor?!
you are not looking hard enough
the column on the expensive on is far better
not $600 worth
when doing a real cut, one notices, 10/20 thou cut on the flimsy
man size probably on the other
Maybe $200, but not $600
there is a reason the expensive good stuff is bigger
Higher price != Better quality
Hmmm it's 200lbs MORE then the $400 one
see what I mean by size
double the weight
3 times the lightest
Well, for $700 more you get a WHOLE LOT MORE here, that I can see >http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=42827
round coulmns suck for cnc
round column == less good
I had one
It's HF, it's all crap =)
but we live with it =)
it makes a good drill
archivist: Honestly, I actually doubt that too. At least not without replacing the bearings
How difficult is it working with thin wall brass tubing? cutting drilling etc
[21:30:09] <geo01005> http://www.use-enco.com/CGI/INSRIT?PMAKA=325-5184&PMPXNO=5820408&PARTPG=INLMK32
anyone own a benchtop multimeter?
jymm, depends on the brass, can be hard brass and easy to work with or soft and very sticky
most of us Gamma-X
* jymm handheld fits on the bench nicely
archivist, im looking for one that is good for surface mount work. and specificly so I can hook up metering tweezers to it.
probe are irelevant to the meter itself
i just want a nice set
does this look sketchy to anyone else? Or am i just being a wuss? http://2.bp.blogspot.com/_sevIHb0O7UU/SnsZQ7lJooI/AAAAAAAAAVg/cmlMxCTVBzA/s1600-h/P8060447.JPG
heh, light cuts.
the heat marks?