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[01:10:17] <zeeshan> does impedance matching in a fan work
[01:10:25] <zeeshan> through a variable resistor that changes resistance with temp?
[01:10:50] <zeeshan> thermistor
[01:11:57] <zeeshan> er nm
[01:13:35] <jfigie> do you mean impedance protected?
[01:13:41] <zeeshan> yes
[01:13:49] <zeeshan> its due to high mutual inductance
[01:13:58] <zeeshan> cause after i thought about thermistor
[01:14:05] <zeeshan> i realized the resistance drops with higher temp.
[01:14:14] <zeeshan> which would mean it'll want to burn the fan even more :)
[01:14:58] <jfigie> There is a special kind of PTC thermistor that is used as a resettable fuse but for the case of the fan I don't know how it is impedance protected.
[01:15:18] <zeeshan> man i am a bit annoyed
[01:15:23] <jfigie> PTC = Positive Temperature Coefficient
[01:15:26] <zeeshan> the fans that came with the machine, some tard soldered the wire
[01:15:28] <zeeshan> directly to it
[01:15:35] <zeeshan> instead of using a fan plug
[01:15:42] <zeeshan> im having an impossible time removing the wire!
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[01:36:45] <cathode> lol
[01:36:58] <cathode> sorry zeeshan - it's like people don't know that spade connectors exist
[01:45:54] <CaptHindsight> the impedance of the fan coils limit the amount of current through it in a stalled state which in turn limits the amount of electrical energy converted to heat in the coils
[01:47:15] <CaptHindsight> since the coils don't get hot enough to melt their insulation there is no further increase in current through them and prevents a fire
[01:48:22] <CaptHindsight> if they also use a PTC then that also limits the amount of current through the coils
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[02:57:25] <Aero-Tec> anyone here hand code Gcode?
[02:57:39] <Aero-Tec> need to know how to use the mod op
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[02:58:14] <Aero-Tec> the help files do not have any sample code for it that I can find
[02:58:42] <Aero-Tec> and have not found any used in and Gcode
[02:59:16] <Aero-Tec> any help would be very welcome
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[03:01:48] <skunkworks> it is 3 mod 2 = 1
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[03:02:33] <Aero-Tec> cool thanks
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[03:04:20] <skunkworks> there are some uses in programs..
http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Oword
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[03:32:59] <skunkworks> http://electronicsam.com/images/KandT/testing/TOP.JPG
[03:34:07] <jdh> nice
[03:34:34] <jdh> how did you hold it while you did the second side? the little outside rim?
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[03:37:51] <skunkworks> it was all done at once.. (but the bottom requred a bit of tlc after..)
[03:38:13] <skunkworks> The program need to be worked a bit.
[03:44:26] <skunkworks> actually made pretty close to this - just on a small compact 5 pc..
https://www.youtube.com/watch?v=MKf-eqShujM
[03:46:08] <jdh> with a parting tool?
[03:46:33] <skunkworks> for the bottom side - yes
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[04:22:23] <t12_> Any suggestions on easiest system to get from rs232 signalling to driving some air valve manifolds?
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[04:40:02] <furrywolf> running latency test on a laptop... about 15 mins so far, and the worst is 9212ns. I take it this is a good sign?
[04:40:34] <furrywolf> that was playing with firefox while glxgears was running
[04:47:16] <zeeshan> yep thats good :P
[04:47:44] <furrywolf> good. I kept hearing horror stories about laptops. :)
[04:48:44] <furrywolf> my drivers have 0 dir setup, 1us dir hold, and 300ns step high and low, so I'm hoping for pretty decent performance with doublestepping...
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[04:50:51] <furrywolf> those glxgears have a really crappy tooth profile... I'd be ashamed if I machined ones that looked like that! *gets bored of watching it*
[04:54:33] <SpeedEvil> Submit a patch.
[04:55:44] <furrywolf> I suspect a few thousand extra polys would affect the frame rate slightly...
[04:56:05] <SpeedEvil> Well - sacrifices have to be made.
[04:56:27] <furrywolf> would probably make it a more useful test for modern hardware...
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[04:56:54] <furrywolf> of course, I don't own any modern hardware.
[04:57:58] <furrywolf> worst jitter is up to 9533ns, and that was when the screen blanker kicked on/off.
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[05:07:39] <furrywolf> should I go with what I have, a mildly bulky 56V 25A switcher supply, or build a 60V 15A unregulated supply, which I have most of the parts for?
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[05:24:04] <furrywolf> ouch! I broke it. youtube managed to get a spike to 41307ns.
[05:28:15] <furrywolf> I'll poke at it more tomorrow. bbl, wolfy bedtime.
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[06:23:09] <zeeshan> anyone know what the difference between a ul508 and ul98 disconnect switch is
[06:23:11] <zeeshan> the 98 is huge
[06:23:14] <zeeshan> 508 is compact.
[06:23:33] <zeeshan> the kA rating as a result is much less for the 508
[06:23:48] <zeeshan> i'm not sure what to select for the cnc controller disconnect..
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[07:43:38] <Deejay> moin
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[12:47:02] <jthornton> hmm a portion of the arc has the same IJK offset so that part is easy
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[12:52:30] <jdh> that's what I was thinking.
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[13:02:33] <jthornton> hmm the X end point is easy and the Z end point appears to be right angle triangle from the Z start point to the intersection of the arc
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[13:04:20] <jthornton> hmm I only know side a and angle C so more study is needed
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[13:19:18] * jthornton was looking at the wrong triangle...
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[14:02:04] * jthornton dunno why I was making the calculation of the radius so complicated when it is the sq rt of a2 + b2
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[14:19:30] <SpeedEvil> http://www.itworld.com/article/2861675/cyberattack-on-german-steel-factory-causes-massive-damage.html
[14:19:49] <SpeedEvil> - they couldn't shut down properly, and ended up with a lot of molten steelinthe wrong place. Ooops
[14:23:34] <ssi> eep
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[15:04:49] <JT-Shop> quite the challenge to find a point on an arc when both I and K are used...
[15:05:47] <ssi> JT's becoming our geometry savant
[15:06:38] <JT-Shop> lol
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[15:22:11] <JT-Shop> anyone have a clue how to solve for Z? in this example:
http://imagebin.ca/v/1lPcT6XoSWtk
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[15:23:19] <SpeedEvil> you mean you want to vary K, and get I out?
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[15:30:17] <jthornton> I and K are fixed, I know Xs Zs and Xf and Zf and Zo I need to find Z?
[15:30:44] <jthornton> I have calculated the radius of the arc from I and K
[15:30:50] <Tom_itx> you need a bit more to solve the 2nd triangle
[15:30:55] <jthornton> so that is known too
[15:31:13] <jthornton> yea, that's where I'm stuck
[15:31:38] <Tom_itx> did you look in the math of the machinist's handbook?
[15:32:07] <jthornton> those pages are so dog eared from looking at them it ain't funny
[15:32:38] <jthornton> I know it will be easy "once I know how"
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[15:35:22] <Tom_itx> http://www.mathsisfun.com/algebra/circle-equations.html
[15:36:02] <furrywolf> playing more with latency test... no matter what I do, the highest jitter I can get is ~11us... except for when I first try playing a youtube video. the instant the video starts there's a spike to 25-40us. I'm guessing this is onboard video initializing something? and I'm hoping I can ignore it, as long as I don't plan on starting youtube videos while milling? :)
[15:39:27] <Tom_itx> jthornton, why can't you solve it with one triangle?
[15:40:23] <Tom_itx> you can solve it...
[15:41:16] <Tom_itx> you know K, you know center-X0Z distance you know 90 deg triangle
[15:41:39] <Tom_itx> center X0Z is the same as R
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[15:43:38] <Tom_itx> solve the base of the K triangle and subtract it from R
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[15:43:55] <Tom_itx> and you will have 2 sides of the other one
[15:45:02] <Tom_itx> http://www.mathopenref.com/coordpointdisttrig.html
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[15:46:58] <furrywolf> it's entirely repeatable... the spike is the instant the first frame of the video appears.
[15:47:14] <SpeedEvil> furrywolf: html5 or flash?
[15:48:01] <furrywolf> html5
[15:48:32] <furrywolf> well, unless flash is included with the linuxcnc iso... I didn't check... but I sure hope not!
[15:48:51] <SpeedEvil> ah
[15:49:04] <furrywolf> yes, html5
[15:49:25] <SpeedEvil> So - avoid cat videos when CNCing
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[15:49:44] <furrywolf> yeah, that's my plan. especially since there's no internet where the mill is.
[15:50:15] <furrywolf> glxgears and other graphics tasks don't cause a problem, it's only initializing videos.
[15:50:46] <SpeedEvil> Even ~40us is ~12ksteps/s safely orso
[15:50:48] <furrywolf> otherwise after an hour of testing I haven't found anything else that gets it over 11us... 3d, wireless, power management, etc all work fine.
[15:51:12] <SpeedEvil> err
[15:51:20] <SpeedEvil> yeah
[15:51:30] <SpeedEvil> And at 400steps/s that's still 1800RPM
[15:51:40] <SpeedEvil> /rev
[15:51:55] <furrywolf> when using doublestep, it generates both halves of the pulse during a single base thread run, right?
[15:52:04] <SpeedEvil> Unsure
[15:53:20] <furrywolf> and, related to that, with only a 1us dirhold for my drivers, does it gurantee that in a single base thread run too?
[15:53:22] <furrywolf> hrmm
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[16:00:43] <CaptHindsight> video drivers, X and browsers now access hardware directly
[16:01:08] <furrywolf> yes.
[16:01:40] <CaptHindsight> and it's too late to get those devs to stop doing so
[16:01:46] <furrywolf> lol
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[16:03:04] <JT-Shop> Tom_itx, I'm not following you
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[16:04:21] <furrywolf> well, since it sounds like this system is indeed suitable for running my machine, next step is to actually install rather than run livecd...
[16:05:01] <furrywolf> ouch! ok, apparantly switching to battery generates substantial spikes sometimes too.
[16:06:10] <furrywolf> wow. running off battery does... weird things. really weird things.
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[16:06:43] <furrywolf> it runs FASTER. the 25us base thread runs every 9us off battery. wtf?
[16:07:06] <furrywolf> as soon as I plug the adapter back in, it goes back to 25us...
[16:07:11] <pcw_home> Clock Speed switching is often done when running off batteries
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[16:07:47] <pcw_home> so all speed calculations are bithash
[16:08:10] <furrywolf> yeah, I know... but I'd expect it to run slower, not faster. :)
[16:08:36] <furrywolf> I'm not too worried, since if I lose AC I'll be losing spindle/axis/etc too, and losing steps will be a non-issue...
[16:08:50] <pcw_home> Might be running slower...
[16:08:59] <furrywolf> heh, on a side note, 9us base thread makes videos slow down to about 2fps. :)
[16:09:11] <pcw_home> _all_ speed calculations are bithash
[16:09:48] <CaptHindsight> you don't want your cpu cores changing speeds
[16:09:58] <CaptHindsight> so you'll have to fix that
[16:10:53] <furrywolf> not sure how... is the kernel doing it, or bios/
[16:10:55] <furrywolf> ?
[16:11:16] <furrywolf> the bios has roughly no options whatsoever.
[16:11:32] <pcw_home> There are often windows utilities to adjust power saving utilities, may or may not be Linux equivs
[16:11:37] <furrywolf> but, as I said, if it only does it on ac power loss, the mill is stopping then anyway.
[16:14:29] <JT-Shop> Tom_itx, I changed the drawing a bit
http://imagebin.ca/v/1lPsPaRtLxDk
[16:16:38] <PetefromTn_> JT-Shop Whatcha workin' on ?
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[16:17:15] <JT-Shop> lathe G code generator, you feed it the profile and few things and it spits out the roughing and finishing G code
[16:17:27] <PetefromTn_> Sweet
[16:17:27] <JT-Shop> trying to find the Z? in the image
[16:18:26] <JT-Shop> with only an I offset it is dead simple, when you add a K offset it shifts the center of the arc
[16:21:53] <furrywolf> hrmm, I guess I don't understand what those offsets mean enough to know what you're doing.
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[16:22:38] <furrywolf> so you're trying to get the Z position given the X position, of an arc of some form?
[16:23:13] <furrywolf> do these offsets affect the shape of the arc, or can they just be subtracted?
[16:23:43] <furrywolf> this is standard gcode arcs, right?
[16:23:51] <PetefromTn_> is this going to be added to that lathe conversational setup you use?
[16:24:01] <JT-Shop> the I and K offsets describe the center of the arc
[16:24:21] <JT-Shop> yes it is a G code arc
[16:24:57] <JT-Shop> I need to find the point on the arc where X Offset intersects the arc
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[16:25:03] <furrywolf> so why can't they just be subtracted, if they only affect the center? or, since you seem to be trying to find the distance along an arc, do they cancel out?
[16:25:09] <JT-Shop> this is my Z postion to rough to
[16:25:43] <JT-Shop> subtract what?
[16:26:21] * furrywolf re-rtfms on arcs, having not done any gcode in ~5 years
[16:26:41] <JT-Shop> this is geometry not g code
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[16:27:31] <JT-Shop> if I can solve the short side of the right most triangle I have my answer to Z?
[16:30:11] <Tom_itx> i think so
[16:31:13] <furrywolf> looks like you only know one side to me...
[16:32:11] <JT-Shop> yea, one side and 90
[16:32:13] <Tom_itx> but you changed the example
[16:32:26] <JT-Shop> yes to simplify it I hope
[16:32:27] <Tom_itx> which is more like the 2nd link i posted
[16:32:30] <furrywolf> shouldn't the triangle be back to the center point? I know the sin-1 (or is it cos-1) will give you the angle given the z position, then the cos/sin will give you the x...
[16:32:33] <furrywolf> but you should be able to do it with triangles instead of inverse trig.
[16:32:59] <furrywolf> swap z and x, forgot which way you were going.
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[16:34:11] <JT-Shop> if I go back to the center I don't know the angle only the 2 sides which are equal to R
[16:34:30] <Tom_itx> and K
[16:35:49] <furrywolf> something like sin(cos-1((x+i)/r))*r+k
[16:36:16] <furrywolf> -k
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[16:37:13] <JT-Shop> which x?
[16:37:49] <furrywolf> my trig is rusty too... last time I had a problem like this it was a surface approximated with a zillion polys, requiring a 3d tree structure to effeciently figure out which one of them it was intersecting... but that was years ago too.
[16:38:08] <furrywolf> the one labeled as x offset on your diagram
[16:38:13] <JT-Shop> my trig is freshly unknown
[16:38:34] <JT-Shop> let me give that a whirl
[16:39:00] <furrywolf> I may well have signs wrong or other problems... I just typed something out, not actually tried it. :)
[16:39:42] <JT-Shop> I know the answer from the cad so I can check the result is == .30056
[16:40:24] <furrywolf> this is pissing me off... I used to be able to do stuff like this without even needing to think, but that was a long time ago...
[16:40:30] * furrywolf hates having a useless brain
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[16:41:12] <furrywolf> I did this in 3d using vectors, and I can't for the life of me remember even a single step.
[16:43:09] <LeelooMinai> furrywolf: It's called getting old:p
[16:43:35] <furrywolf> is that way my back hurts and I can't lift with my right knee, too? :P
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[16:52:05] * furrywolf should fire up the lathe to make some suggestive aluminum toys just to scare LeelooMinai off
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[16:52:38] <LeelooMinai> With the lathe or toys? :)
[16:53:28] <furrywolf> with the toys. I know how fond you are of them. :P
[16:55:07] <LeelooMinai> It seems not all of your brain gets old at the same rate...
[16:55:08] <SpeedEvil> furrywolf: Stainless steel is much more saleable.
[16:56:02] <furrywolf> lol
[16:56:10] <furrywolf> I'm not trying to sell them, just annoy leeloo.
[16:58:26] <furrywolf> first step, however, is actually installing linuxcnc rather than running it off the usb key... seems like this system should be suitable, as long as I avoid certain things while it's running.
[17:00:47] <furrywolf> right now I only have one stepper wired, and it's just with test wiring...
[17:02:40] <furrywolf> manually generating steps resulted in severe oddities, but I'm hoping they go away with a pc driving it instead of a switch.
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[17:09:13] <SpeedEvil> You know about switchbounce?
[17:10:04] <XXCoder1> furrywolf: lol making stuff just to annoy others
[17:10:42] <furrywolf> speedevil: I tossed a 10uf capacitor on the driver input...
[17:11:28] <furrywolf> it'd work fine 99% of the time, but occasionally the motor would suddenly jump a very large amount (a quarter turn once) in a random direction... I'm hoping it was just my crappy step input annoying the driver.
[17:13:51] <furrywolf> 8A/phase at 40V does some impressive jumping. :)
[17:14:51] <SpeedEvil> :)
[17:15:41] <furrywolf> hrmm. bug in the debian graphical installer partman. even if you tab to the continue button on the bottom of the screen, space and enter both act on the currently selected item in the partition list.
[17:17:15] <furrywolf> I'm not sure which supply I'll use when I have it more built... I have a choice of 54V @ 25A switcher, or 60V @ 15A unregulated.
[17:17:58] <furrywolf> I'm tempted to go with the unregulated and save my nice switchers for something that cares.
[17:18:22] <XXCoder1> in least protect from peaks though
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[17:18:49] <furrywolf> I have a 75V 5W zener for each driver
[17:19:22] <pcw_home> a big that capacitor slows the input slew rate may cause multiple pulses on a step drive
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[17:20:35] <XXCoder1> you mean "that big capactor..."?
[17:20:36] <furrywolf> pcw: yep. but it worked a lot better than the undebounced switch. I was really just making sure the motor and driver were functional, which they appear to be.
[17:20:40] <furrywolf> ebay parts....
[17:21:04] <XXCoder1> you mean "that big a* capactor..."?
[17:21:22] <pcw_home> yes
[17:21:34] <XXCoder1> ok. sometimes my esl shows lol
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[17:22:16] <furrywolf> got some pacsci steppers (8.6A/phase, 1.3mH) and centent cn0165 drivers.
[17:23:12] <furrywolf> 940ozin.
[17:29:29] <XXCoder1> I might get a new job at another company
[17:29:51] <XXCoder1> better pay, and more perment job and not intern
[17:30:22] <XXCoder1> if so I might finally have better budget and start buying 8020 beams to build my router, bypassing wood frame
[17:30:35] -!- b_b has quit [Remote host closed the connection]
[17:30:45] <FinboySlick> XXCoder1: was just about to mention 'increase in tool budget' ;)
[17:31:35] <furrywolf> I need more money... my job sucks, and I can barely pay the bills...
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[17:33:17] <XXCoder1> that sucks
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[17:40:00] <furrywolf> hrmm. now that I actually installed it, reboot doesn't work... just hangs at a black screen. have to do the 3sec power button to turn it off, then turn it on.
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[18:06:02] <jthornton> I think I need to calculate the cord length of the end point and subtract that from the cord length of the start point
[18:06:45] <Tom_itx> jthornton, what exactly are you trying to find out?
[18:06:49] <Tom_itx> the endpoint?
[18:07:05] <Jymm> Tom_itx: How long to leave the roast in the oven for.
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[18:07:12] <Tom_itx> oh
[18:07:24] <jthornton> the Z end point of part of the arc
[18:07:30] <Jymm> Tom_itx: (ndc, he's not making much sense =)
[18:07:38] <Tom_itx> is the rotissary on a cnc run by linuxcnc?
[18:07:52] <Jymm> lol
[18:08:03] <Jymm> No, but the smoker is
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[18:14:39] <PetefromTn_> My machine made a fine smoker for about five seconds or so awhile back ;)
[18:17:29] <jthornton> I got it :)
[18:17:46] <PetefromTn_> LIGHT BULB!!
[18:19:05] <PetefromTn_> https://www.youtube.com/watch?v=QSHaERIvFNE
[18:19:27] <jthornton> Tom_itx,
http://pastebin.com/ExbU6Y4K
[18:26:33] <furrywolf> $!#[15;2~%#%$$#%!!!!!
[18:26:39] <furrywolf> my breakout board just exploded.
[18:28:14] <jthornton> furrywolf, did you see I figured out the solution?
[18:29:16] <furrywolf> no
[18:29:33] <furrywolf> and right now I'm trying to find bits of my breakout board, and hoping I don't have hearing injury.
[18:29:48] <jthornton> http://pastebin.com/ExbU6Y4K
[18:29:52] <furrywolf> one of the chinese caps exploded hard enough to rip parts off...
[18:30:15] <furrywolf> there's bits of capacitor all over the ROOM.
[18:30:46] <jthornton> I calculated the cord length of the section of the circle and used that to find the Z position
[18:31:15] <furrywolf> I was playing with the maximum step rate I could get... I was up to 15 in/s...
[18:31:48] <furrywolf> seems the chinese caps don't like any ripple on the power supply input
[18:34:00] <furrywolf> brb, fetching camera from car, to send ebay seller very nasty email.
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[18:37:47] <jthornton> when roughing on a lathe and the roughing steps is not evenly divisible into the distance to rough is it better to:
[18:37:58] <furrywolf> they're fucking counterfeit capacitors. "rulycon" instead of "rubycon".
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[18:38:05] <jthornton> A step over until distance is less than step then take last distance
[18:38:21] <jthornton> B divide distance by step and take ceil
[18:38:29] <jthornton> C divide distance by step and take floor
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[18:41:46] <archivist> I am not sure you can easily program roughing because the shape and stiffness of the part affects what you can/should do
[18:42:43] <jthornton> say for example you determine that you want to take 0.025" per pass and it does not divide up evenly into 0.2165
[18:43:12] <jthornton> do you take 0.025" for each pass except the last one?
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[18:44:10] <jthornton> or take a little less each pass to take the same amount for each pass?
[18:44:17] <archivist> or slowle reduce the cuts as the part gets smaller, like the threading does
[18:44:56] <jthornton> that could be an option
[18:45:24] * jthornton goes to check the smoker
[18:46:02] <Jymm> jthornton: What?! Non g-code of smoker.status ?
[18:46:07] <Jymm> no*
[18:46:30] Jymm is now known as Jymmm
[18:46:33] <jthornton> 4.5 degrees and it is nap time
[18:49:54] <furrywolf> suggestions for a MADE IN USA breakout board with non-counterfeit components, at a price someone with no money can afford?
[18:51:10] <SpeedEvil> furrywolf: lolz
[18:51:20] <SpeedEvil> furrywolf: practically - replacing the input caps may be sane.
[18:51:55] <furrywolf> this board exploded with less than a half hour of use
[18:52:34] <furrywolf> looks like no other parts were actually broken off, just one of the optos bent outwards on its legs... couldn't really tell until I scraped off capacitor remains.
[18:52:35] <PetefromTn_> furrywolf get some mesanet cards and be happy LOL
[18:52:46] <furrywolf> so I'll probably replace the caps, but it still pisses me off.
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[18:53:51] <furrywolf> I can't find the cap's shell... it's probably in some inaccessible corner under something.
[18:55:13] <archivist> just putting that type on backwards can make it fly, one nearly missed my head one day on its way to the ceiling
[18:56:15] <XXCoder1> cap rocket
[18:56:16] <archivist> I have seen red and black wires swapped on a chines motor controller
[18:56:47] <furrywolf> from what's left of the wrapper, it's in the right way around.
[18:57:03] <furrywolf> they're 50V caps, I was running at 30V.
[18:57:18] <furrywolf> the real problem is they're ruLycon, not ruBycon.
[18:57:37] <furrywolf> rulycon being a known counterfeit/knockoff/fake brand
[18:58:11] <pcw_home> I used to work at a sound effects hardware company and have seen test technicians
[18:58:13] <pcw_home> chasing assembly people around the tables after a reversed electrolytic blew up in their face...
[18:59:07] <Jymmm> DIY Air Dryer
https://www.youtube.com/watch?v=gfRH4Ol7x1Q
[19:00:44] <furrywolf> it's nothing to do with assembly... it's a counterfeit component.
[19:00:57] <furrywolf> the component is of the proper rating and installed correctly.
[19:01:02] <XXCoder1> yummy fake cap rockets
[19:01:43] <pcw_home> not counterfeit (counterfeit would be labeled Rubycon)
[19:02:41] <pcw_home> maybe should be named unrulycon
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[19:03:54] <furrywolf> I guess I'll recap it, and make sure to run the breakout board off a separate supply to prevent any driver ripple from reaching it...
[19:04:06] <SpeedEvil> furrywolf: wash the board in hot soapy water
[19:04:17] <SpeedEvil> furrywolf: then dry in an oven at 80C or so for several hours
[19:04:20] <XXCoder1> dishwashing is everywhere
[19:04:25] <SpeedEvil> you do not want the capacitor juice on the board
[19:04:29] <furrywolf> I'll probably run it through my sonicator. it's pretty badly slimed. I'm uploading pictures now...
[19:04:37] <SpeedEvil> that works too
[19:04:43] <XXCoder1> cap juice a day keep doctor near
[19:05:14] <furrywolf> uploading 6 full-camera-res jpgs on my connection is a bad idea. I should have resampled them. oh well.
[19:05:22] <furrywolf> maybe in ten minutes you'll get macro porn...
[19:05:44] <XXCoder1> macro upload
[19:06:43] <furrywolf> I can only imagine it's a ripple current issue... or, of course, it could just be an entirely defective part. I followed centent's guidelines and put a >470uf capacitor right at the driver, in this case a 1000uf 100v...
[19:06:53] <furrywolf> so there shouldn't have been toooo much ripple.
[19:07:00] <furrywolf> said cap at the driver is ice cold, too.
[19:07:06] <furrywolf> so could be just defective.
[19:07:28] <SpeedEvil> furrywolf: heating with two caps in parallel is primarily onthe good one, not the bad one
[19:07:36] <furrywolf> so much for cnc projects today.
[19:07:53] <furrywolf> and here I was so happy I was getting 15in/s out of my steppers!
[19:08:32] <XXCoder1> interesting idea, but way too expensive, jeez.
https://www.kickstarter.com/projects/1329423847/mind4-worlds-first-android-based-smart-drone?ref=category_location
[19:08:36] <furrywolf> I obviously wouldn't get that on the actual mill, but it's still nice.
[19:08:46] <XXCoder1> 15 in/s?
[19:09:06] <XXCoder1> thats .85 mph. pretty impressive
[19:09:08] <furrywolf> 15 in/s with a 2:1 pulley and 10tpi leadscrews.
[19:09:43] <furrywolf> works out to... *math*... 18000rpm.
[19:10:19] <furrywolf> but it's just a bare motor with a piece of tape on the end of the shaft. not indicitave of actual machine performance.
[19:10:42] <furrywolf> I was using the axis test function and running it back and forth as fast I could get it to.
[19:11:38] <XXCoder1> hmm probably bit slower when it has to actually move stuff
[19:12:01] <furrywolf> probably quite a bit. :)
[19:12:21] <furrywolf> 20in/s made it lose steps audibly
[19:13:03] <XXCoder1> thats one of the problems I need to figure how to know. its impossible for me to know if its making noise that shows its missing steps.
[19:13:03] <furrywolf> I'd probably trash the machine trying to run it that fast anyway... big off-balance handwheels, plain brass leadscrew nuts, etc.
[19:13:21] <furrywolf> switch to servos. :)
[19:13:47] <XXCoder1> nah dont need fancy servos on my tiny router cnc
[19:14:01] <XXCoder1> I did setup and test and tuned it using feeling
[19:14:18] <XXCoder1> it ran pretty smooth but cant really know till its all together and running
[19:14:57] <furrywolf> if you just want to do a test to see if you lose steps in general, use an accurate micrometer or calipers to measure the current table position off the column/headstock/whatever is appropriate for your machine and axis, then run the axis test function that runs it back and forth at full speed repeadly... let it run for a few hours... return to start, and measure again.
[19:15:34] <XXCoder1> cool
[19:15:52] <furrywolf> if they don't match, you lost steps. if they do, you probably didn't.
[19:17:33] <furrywolf> actually, I don't know if the axis test keeps track of position... but it's easy enough to write some gcode to g0 back and forth a hundred times. :)
[19:17:48] <XXCoder1> indeed
[19:17:54] <furrywolf> http://fw.bushytails.net/bbcaps/ exploded capacitor porn
[19:18:15] <XXCoder1> wow fibers everywhere
[19:18:28] <XXCoder1> literally
[19:18:55] <furrywolf> all over the board, my workbench, ME....
[19:19:10] <furrywolf> my jacket caught most of them
[19:20:46] <furrywolf> I'm somewhat worried about sonicating it with the relay... might trap moisture.
[19:26:32] <XXCoder1> HMMM
https://www.kickstarter.com/projects/620560346/101touch-the-new-generation-of-keyboard?ref=category_recommended
[19:27:23] <LeelooMinai> Tactile feedback level - zero :p
[19:27:35] <XXCoder1> thats the biggest flaw
[19:27:45] <furrywolf> I like clicky keyboards with mechanical switches. IBM Model M++.
[19:29:22] <furrywolf> nasty email sent to ebay seller. I told him to send me a board with non-fake capacitors on it. I highly doubt this will happen.
[19:30:31] <LeelooMinai> I have a nice keyboard idea that is better than that kickstarter.
[19:30:39] <LeelooMinai> imho at least:)
[19:30:59] <Connor1> LeelooMinai: and the idea is ?
[19:31:04] Connor1 is now known as Connor
[19:31:20] <LeelooMinai> The idea is good? :)
[19:33:01] <LeelooMinai> The lack of tactile feedback is not the only problem with that kicstarter keybord.
[19:33:20] <LeelooMinai> The other is, that you don't really want to look at the keyboard when using it.
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[19:33:48] <furrywolf> I hate all touch things, such as touchscreens.
[19:34:07] <furrywolf> other than on very small devices
[19:34:11] <pcw_home> My neck already hurts looking at that thing
[19:34:18] <Connor> http://www.cnet.com/news/a-keyboard-that-rises-up-from-flat-touch-screens/
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[19:34:20] <LeelooMinai> Not only have you move your eyes up and down, but also constantly refocus - that's kind of silly and will strain the eyes very quickly.
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[19:35:46] <furrywolf> qwertz, eh?
[19:35:49] <Connor> I like the lcards layout on it.
[19:36:00] <XXCoder1> it could be great second keyboard
[19:36:04] <XXCoder1> custom for games and such
[19:36:28] * furrywolf has never seen a qwertZ keyboard.
[19:36:30] <XXCoder1> for example in ksp mode I would have 1-0 buttons display custom action #1 so on
[19:37:02] <XXCoder1> Connor: yeah would love that!
[19:37:10] <LeelooMinai> So my idea is pretty simple - use normal querty keyboard and have a sensor on it that will "image" the hands position on it. Some kind of infrared sensors probably. And then you can have the keyboard with hands displayed either on the main screen or some secondary close to it, and show how keys are remapped - using graphics, or whatever. You will have visual feedback where your hand is over they keyboard and you won't need to look
[19:37:10] <LeelooMinai> at it at all.
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[19:37:34] <furrywolf> slovakian, apparantly.
[19:37:36] <LeelooMinai> The hands would be translucent of course.
[19:37:37] <Connor> It's nothing more than a touch screen monitor thats the size of a keyboard.. running android..
[19:37:49] <XXCoder1> Connor: and probably very hackable
[19:38:06] <XXCoder1> I wonder if it can be turned into "tablet" lol
[19:39:12] <furrywolf> I want to make laptops with real clicky keys, with a fancy collapsible mechanism to retract them when shutting the lcd so they don't make the laptop stupidly thick. (*cough* msi *cough*)
[19:39:59] <Connor> Their use to be a laptop with a split keyboard that would pop out wider than the laptop.. I don't remember who made it..
[19:40:06] <XXCoder1> that android keyboard thing definitely isnt good keyboard but it can be GREAT second keyboard
[19:40:30] <XXCoder1> I mean, use regular for usual, but gaming with custom keyboard? heck yes
[19:40:41] <furrywolf> connon: ibm thinkpad
[19:40:43] <furrywolf> connor
[19:40:54] <furrywolf> how the fucking hell do people use an irc client with no tab complete
[19:41:09] <Connor> furrywolf: I don't. and language please. :)
[19:41:11] <XXCoder1> no idea. I use one that supports auto complete tab lol
[19:41:23] <XXCoder1> just use flipping in place of f*ing
[19:41:26] <furrywolf> xxcoder: don't gamers want nice fast tactile keyboards they don't have to look at?
[19:41:34] <XXCoder1> usually yes
[19:41:37] <XXCoder1> for me not so much
[19:41:44] <LeelooMinai> XXCoder1: Imho that idea is useless as I just described:)
[19:41:47] <furrywolf> for some reason debian no longer includes bitchx, so I installed epic on here... and it has no tab complete.
[19:42:03] <XXCoder1> furrywolf: hexchat
[19:42:06] <jdh> I used epic for 10 years or so
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[19:42:16] <LeelooMinai> No gamer will take their eyes from the screen to touch some silly touchpad-keyboard:)
[19:42:23] <Connor> I use Pidgin
[19:42:28] <XXCoder1> lee thats for twitch gamers
[19:42:29] <XXCoder1> Im not
[19:42:37] <jdh> I use irssi in screen(1) now
[19:42:38] <LeelooMinai> Same with games as warcraft
[19:42:45] <LeelooMinai> MMOs
[19:42:57] <XXCoder1> all unplayable
[19:43:00] <XXCoder1> for me that is
[19:43:13] <LeelooMinai> You would go crazy if you had to constantly touch some weird-ass keyboard:)
[19:43:43] <LeelooMinai> And probably end up cross-eyed or something:p
[19:44:03] <furrywolf> xxcoder1: hexchat appears to be a graphical irc client with a windows focus. both of the clients I just mentioned are console *nix clients...
[19:44:13] <XXCoder1> ahh
[19:44:17] <XXCoder1> console
[19:44:24] <furrywolf> jdh: irssi is evil, but that's an argument I'm not in the mood for right now. :P
[19:44:33] <XXCoder1> LeelooMinai: first result of weird-ass keyboard lol
https://i.imgur.com/J18Pci9.jpg
[19:44:41] <jdh> there is no evil
[19:44:56] <furrywolf> irssi... let's use all the same commands and ideas that normal irc clients use, but make them behave slightly differently so nothing you're used to actually works!
[19:45:21] <jdh> I have not experienced that.
[19:45:48] <XXCoder1> LeelooMinai: know what I really want?
[19:45:59] <XXCoder1> I want eink screen on each button keyboard
[19:46:00] <furrywolf> have you been using bitchx/epic-derived clients for a gazillion or so years? :)
[19:46:17] <jdh> ircII-epic for 10+years
[19:46:21] <furrywolf> xxcoder: I designed one of those the other day. (mentally, not actually built)
[19:46:25] <LeelooMinai> XXCoder1: That's pretty old - maybe not eink, but oled on each key
[19:46:36] <XXCoder1> LeelooMinai: I know of oled one. it sucks
[19:46:48] <XXCoder1> I dont want glowy keyboard
[19:46:49] <furrywolf> xxcoder: I couldn't decide between eink and lcd... eink wouldn't play well with backlight.
[19:47:10] <XXCoder1> furrywolf: kindle paperwhite works well with backlight so you probably can figure
[19:47:17] <LeelooMinai> It's still the same problem - you don't want to look at the keyboard and screen all the time.
[19:47:34] <XXCoder1> yeah but then it can be set to whatever you want
[19:47:43] <furrywolf> xxcoder: ok, then, eink it is. :P
[19:47:53] <furrywolf> I also designed it to be completely and totally waterproof.
[19:47:58] <furrywolf> AND clicky!
[19:48:01] <XXCoder1> daviok keyboard without pulling all keys and put em right places? hell yes
[19:48:15] <XXCoder1> waterproof/dustproof is good for cnc shops.
[19:48:23] <LeelooMinai> XXCoder1: And? What good it is that you can display something on keys if looking at them takes you off the real work you do on the screen? :)
[19:48:30] <furrywolf> https://www.youtube.com/watch?v=g9E-CXVFQ0M rulycon caps.
[19:49:02] <LeelooMinai> You will end up with neck injury.
[19:49:03] <furrywolf> my current cnc keyboard is water and dust-proof
[19:50:12] <furrywolf> leeloo: it lets you switch it for different languages, among other things. but, yes, it's not an incredibly useful technology.
[19:50:25] <XXCoder1> LeelooMinai: actually I would keep default charactor layout. custom display means it can show what buttons is for without me figuring it out
[19:50:33] <XXCoder1> but playstyle wouldnt change
[19:50:34] <LeelooMinai> It kind of sounds cool and all, but usability of it is poor.
[19:51:23] <XXCoder1> eink is awesome in some ways
http://www.slashgear.com/fes-e-ink-watch-changes-styles-and-colors-with-a-button-press-26357389/
[19:51:43] <furrywolf> you could do clever things like change the keys when ctrl/alt/fn/etc is pressed, but... not incredibly useful still.
[19:51:52] <XXCoder1> indeed
[19:52:27] <LeelooMinai> I like my idea better, but someopne probably patented it in some way already:)
[19:52:42] <XXCoder1> http://www.gizmodo.com.au/2013/02/this-dynamic-e-ink-keyboard-needs-to-become-a-real-thing/
[19:53:49] <furrywolf> I mostly was thinking about designing a waterproof backlit keyboard, and realized part of the technology I was thinking of could also be used for adding displays...
[19:53:53] <XXCoder1> it shows what I mean. specific application it shows usual abcs as well as what its for. makes learning shortcuts much faster
[19:54:39] <furrywolf> my lungs hurt. hopefully exploded capacitor isn't highly toxic...
[19:54:57] <XXCoder1> ow if it keeps like that check with doc
[19:55:20] <LeelooMinai> furrywolf: I am afraid it is:)
[19:56:28] <XXCoder1> http://www.yankodesign.com/2013/01/29/best-keyboard-ever/ bit more detail
[19:58:36] <LeelooMinai> XXCoder1: Mildly useful, but the price would make it impractical - those eink displays are not cheap
[19:58:41] <XXCoder1> phone
http://www.andybrain.com/extras/samsung-alias-2-review.htm
[19:58:58] <XXCoder1> lee yeah it will change evenually
[19:59:05] <XXCoder1> first lcds was quite high price too
[19:59:11] <LeelooMinai> I heard that like 6 years ago...
[20:01:00] <LeelooMinai> Before that happens they will make displays flexible and you will be able to put tactile "buttons" beneath them:)
[20:03:29] <XXCoder1> its hard to predict where we will go
[20:03:37] <XXCoder1> 90s future is way off
[20:04:02] <XXCoder1> 2001 is about the only one that predicted tablets, star trek classic got it pretty close
[20:04:22] <LeelooMinai> I predicted tables in 80s:p
[20:04:27] <LeelooMinai> tablets*
[20:04:34] <furrywolf> I was wrong on which cap exploded... it looks like the internal 10V regulator filter cap.
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[20:07:19] <furrywolf> how the hell does a cap fed with 10V after a lm317 explode?
[20:07:37] <Tom_itx> shorted internally
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[20:07:53] <Tom_itx> tantalums love to explode
[20:08:01] <furrywolf> lm317s current regulate pretty well...
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[20:08:32] <furrywolf> this was a chinese knockoff electrolytic, not a tantalum. it made a rather impressive boom.
[20:08:48] <Tom_itx> they are known for their fireworks
[20:09:23] <furrywolf> http://fw.bushytails.net/bbcaps/bbcap03.jpg looks like that now
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[20:10:08] <Tom_itx> i've been replacing ones on my MB as they start to bulge
[20:10:35] <furrywolf> yes, I've recapped plenty of motherboards...
[20:12:33] <furrywolf> I'll probably recap this breakout board if the seller doesn't want it back. my experience with ebay sellers is he'll probably send me another one... but I don't particularly trust another one not to do the exact same thing.
[20:13:15] <furrywolf> I like nichicon pw and pm personally.
[20:14:19] <Tom_itx> i don't remember what i got for mine
[20:14:25] <Tom_itx> they didn't quite fit
[20:15:29] <furrywolf> I often use slightly larger caps... sometimes you have to get creative.
[20:15:44] <furrywolf> I recapped an lcd display with ones several times larger, because they're what I had handy... it was interesting.
[20:16:20] <furrywolf> http://fw.bushytails.net/hp1520after.jpg they fit! :P
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[20:16:42] <furrywolf> http://fw.bushytails.net/hp1520before.jpg original size ones
[20:17:22] <Tom_itx> similar to mine
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[20:19:07] <furrywolf> I'm really sick of chinese products... the only chinese part of this cnc conversion is the breakout board, because I couldn't find an american one at a price I liked... and that one chinese part fucking explodes.
[20:19:48] <Tom_itx> haha
[20:19:51] <XXCoder1> fun
[20:20:13] <furrywolf> http://fw.bushytails.net/694d2/p1010066.jpg wow, been ten years since I recapped that now... that one I not only used larger capacitors, I moved them over a bit to clear big heatsinks.
[20:25:01] <furrywolf> are any of them made in usa? heh
[20:26:08] <marmite> well you get what you pay fore
[20:26:10] <marmite> for
[20:27:30] <XXCoder1> indeed
[20:27:44] <XXCoder1> I bought chinsese sbrs and had to clean out metal flakes
[20:28:04] <XXCoder1> it mostly works smoothly just need some oil maybe and actually built lol
[20:28:15] <furrywolf> sbrs?
[20:28:44] <XXCoder1> http://upload.ecvv.com/upload/Product/20117/China_SBR_Support_rail_unit201172315050410.jpg
[20:29:09] <furrywolf> ah
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[20:30:35] <furrywolf> brb, time to rustle up some breakfast
[20:33:25] <marmite> sexy sbr
[20:33:36] <XXCoder1> thick, long and hard :P
[20:33:49] <marmite> omnom grease it upp like a bitch
[20:34:10] <XXCoder1> back and forth for hours
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[20:37:08] * furrywolf wouldn't mind something else thick, long, hard, and greased up, back and forth for hours... being single sucks.
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[20:39:32] <XXCoder1> it does suck. well
[20:39:47] <XXCoder1> random question - is there a way to cnc machine sharp inside corner lol
[20:40:07] <furrywolf> yes, but not easily with a 3 axis vertical mill. :P
[20:40:43] <XXCoder1> in calculus size radius for tool that can do exactly sharp corner is zero
[20:41:00] <XXCoder1> so what woul trick be?>
[20:41:06] <furrywolf> you can use a cutting wheel and a right angle gearbox, you can use wire edm, you can use broaching,...
[20:41:28] <XXCoder1> interesting
[20:41:59] <XXCoder1> well I guess im out for now. laters
[20:42:09] <furrywolf> cyas
[20:42:35] <furrywolf> my cnc projects are on hold pending a new breakout board or new caps for this one. bleh.
[20:43:44] <XXCoder1> yeah my projects on hatius for a while. not sure what to do yet lol going now
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[20:55:41] <furrywolf> ohhh, don't forget using a boring bar in the spindle, with the motor off, as a slow shaper...
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[21:01:26] <SpeedEvil> Or do you actually need a rectangle.
[21:01:35] <SpeedEvil> Orsomething that will clear a rectangle pressed into it
[21:01:52] <SpeedEvil> you can do a } at the corner
[21:02:22] <SpeedEvil> This can be called a stress relief milling
[21:02:38] <SpeedEvil> Because it does relieve lots of stress concentration at the sharp corner
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[21:06:50] <JT-Shop> XXCoder1, a rotary broach will do a square corner
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[21:08:33] <Tom_itx> JT-Shop, did you get the math worked out?
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[21:39:43] <furrywolf> joy... was going to go to the store, but according to one of the local news sources, the road has a foot of water on it. time to get my truck out from behind crap...
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[21:51:27] <FinboySlick> furrywolf: Careful with that. A foot of water can hide a 3 foot drop.
[21:53:00] <Deejay> gn8
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[22:18:51] <XXCoder1> JT-Shop: gonna google that
[22:20:22] <XXCoder1> http://www.polygonsolutions.com/how-rotary-broaching-works/ nice
[22:20:31] <_methods> yeah they're awesome
[22:20:50] <_methods> takes a bit to get them set up perfect
[22:20:58] <_methods> but once they're set they work great
[22:21:06] <XXCoder1> so can can use em too
[22:21:07] <JT-Shop> Tom_itx, yep
[22:21:37] <Tom_itx> iirc i had finished code for that ball
[22:21:44] <Tom_itx> not sure if i posted it
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[22:22:41] <Tom_itx> that all happened about the same time i blew the boards in my mill
[22:23:36] <XXCoder1> slides at bottom of that page is interesting
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[22:24:50] <XXCoder1> https://www.youtube.com/watch?v=gUEcagEmmZo
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[22:27:01] <zeeshan> hey guys
[22:27:05] <zeeshan> can someone please do a sanity check for me
[22:27:06] <zeeshan> http://i.imgur.com/h5PDqhQ.png
[22:27:12] <zeeshan> is my diagram right?
[22:27:36] <fenugrec> Hi, I have a small issue with axis homing on my lathe. I set HOME_OFFSET=142.7 and HOME=142.7, hoping that after homing the axis it will stay at the home switch position instead of rapid-ing to X=0... here's my AXIS_0 section :
http://pastebin.ca/2890697
[22:28:47] <fenugrec> hahahaa
[22:28:57] <fenugrec> I just noticed I have two "HOME=.." lines.
[22:29:08] <zeeshan> haha
[22:29:09] <zeeshan> :D
[22:29:09] <fenugrec> I just had to ask to get the answer
[22:29:43] <XXCoder1> fenugrec: its magic. You dont wanna know how many times I figured solution to code issues as soon as I ask.
[22:30:18] <fenugrec> XXCoder1 I think the solution would be to log in to a bogus IRC channel and ask the question to /dev/null . I wonder if the effect would be the same
[22:30:38] <XXCoder1> or ask "another person" mentally
[22:30:41] <XXCoder1> it helps sometimes
[22:31:01] <XXCoder1> I try to explain nonexistant person the issue and sometimes trying to explain helps find flaws
[22:31:38] <fenugrec> On another topic, is anyone else having issues with AXIS 2.6.5 ? I'm getting random hangs/freezes, very rarerly but now and then. Especially if I load/reload files or play with the tool table
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[22:37:05] <Tom_itx> JT-Shop, have a look at that one:
http://tom-itx.no-ip.biz:81/~webpage/cnc/JT-SHOP/
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[22:40:24] <JT-Shop> that's pretty much what I did
[22:40:52] <Tom_itx> i'm not sure if the tool offset is right but see if it loads ok if you don't mind
[22:40:58] <XXCoder1> lathe I guess
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[22:42:07] <XXCoder1> http://tom-itx.no-ip.biz:81/~webpage/cnc/Cube1.jpg nice
[22:42:25] <JT-Shop> first thing I notice is your using wrapping % and a M30, only one is used
[22:43:11] <Tom_itx> i'm sure the post could use a bit of work
[22:43:26] <Tom_itx> i haven't had problems with the %
[22:43:27] <JT-Shop> the first radius has a huge error
[22:43:33] <zeeshan> does anyone know if the GND ### at each drive output on the 7i77
[22:43:37] <zeeshan> goes to an op amp
[22:43:48] <Tom_itx> what does it do?
[22:44:04] <JT-Shop> you only use % when you don't want to reset the current settings
[22:44:30] <Tom_itx> i wasn't aware what % was for honestly
[22:44:44] <Tom_itx> it's been in all my templates for years :)
[22:45:18] <_methods> it's a fanuc thing
[22:45:23] <JT-Shop> I assume different controls use % in their own manner and may be different than LinuxCNC
[22:45:25] <Tom_itx> my lathe post hardly gets much critiquing since i don't have a lathe
[22:45:35] <_methods> most posts just default start with %
[22:45:45] <zeeshan> why not start with %
[22:45:50] <zeeshan> and then write all the standard commands you want :D
[22:45:52] <zeeshan> thats what i do
[22:46:13] <JT-Shop> why not read the manual and see what % does, I do
[22:46:23] <Tom_itx> well if you have defaults set already and only have one machine you may not want it there
[22:46:34] <zeeshan> i like my code to be universal
[22:46:36] <zeeshan> between machines
[22:46:50] <zeeshan> so i never trust a machines defaults
[22:46:59] <Tom_itx> i haven't looked at the post for a few weeks
[22:47:05] <zeeshan> it also makes code easier to adapt to other machines
[22:47:36] <Tom_itx> we used it but we had a multi machine shop
[22:50:58] <furrywolf> finboy: my truck won't mind a 3ft drop... but this area floods pretty often. it's always standing water.
[22:52:31] <JT-Shop> hmm soft lead is 0.78/lb at the scrappers
[22:52:44] <JT-Shop> I wonder what my local scrap yard gives
[22:52:51] <XXCoder1> yummy tasty lead
[22:53:26] <zeeshan> how do you know what is the tachometer - or + lead
[22:53:33] <zeeshan> coming out of a servo tacho
[22:53:48] <zeeshan> if i rotate the servo clockwise by hand
[22:54:01] <zeeshan> can i tell?
[22:54:06] <zeeshan> by hooking it up to a scope
[22:54:37] <furrywolf> is it a tachometer, or an encoder? quadrature?
[22:54:39] <cradek> check your amp instructions - usually the tach is opposite the command
[22:55:01] <zeeshan> my amp says "tachometer input - goes a certain pin"
[22:55:02] <cradek> so if commanded positive voltage makes the motor go clockwise, the tach should go negative
[22:55:05] <furrywolf> hook it up and see if it doesn't work? :)
[22:55:07] <zeeshan> tach + goes to chassis ground
[22:55:10] <zeeshan> er
[22:55:12] <zeeshan> signal ground.
[22:55:13] <zeeshan> not chassis
[22:55:26] <cradek> or just try it -- one way it runs away, the other way it holds position
[22:55:32] <zeeshan> okay
[22:55:40] <cradek> not sure I'd do that with it hooked to a machine though
[22:55:46] <zeeshan> motors are off
[22:55:50] <cradek> aha
[22:55:52] <cradek> then it'll be easy
[22:56:05] <zeeshan> dont you have to do amplifier velocity tuning
[22:56:07] <zeeshan> with them off the machine?
[22:56:12] <zeeshan> (thats why i took them off)_
[22:56:17] <cradek> with it the right way, it will fight you if you try to turn the motor
[22:56:43] <cradek> I doubt you can do any useful tuning with the motors not moving the actual mass of the machine
[22:56:44] <zeeshan> even when the servo drive is not tuned?
[22:56:50] <cradek> but you can sure get your polarities right
[22:57:01] <cradek> depends how bad the tuning is
[22:57:07] <zeeshan> its completely untuned
[22:57:10] <FinboySlick> zeeshan: Peeked at your videos yesterday. What's your mill?
[22:57:12] <cradek> well one way it will totally run away
[22:57:14] <cradek> that's the wrong way
[22:57:30] <zeeshan> by run away, you mean
[22:57:35] <zeeshan> it'll go full speed turning?
[22:57:48] <zeeshan> where as in the right direction it might drift slowly?
[22:57:50] <cradek> yes if you give it a little push clockwise it will run clockwise as fast as it can
[22:57:54] <zeeshan> okay
[22:57:55] <cradek> yes exactly
[22:58:09] <zeeshan> i should hold the servo in a vise then :)
[22:58:11] <cradek> it might drift or oscillate a bit
[22:58:13] <cradek> oh yes
[22:58:29] <zeeshan> FinboySlick: wf21c mikron
[22:59:40] <FinboySlick> zeeshan: Wow, that's pretty beefy.
[23:00:06] <furrywolf> should I recap this breakout board with high-quality low-esr caps (that I'd need to order from mouser and wait a week), or whatever a 20pc radio shack cap assortment comes with these days? I don't see any part of it that needs low esr... it's just filtering before and after a lm317...
[23:00:14] <zeeshan> :)
[23:00:44] <zeeshan> furrywolf, like the crowd says
[23:00:47] <zeeshan> buy a mesa!
[23:00:47] <zeeshan> :P
[23:01:00] <zeeshan> 7i76
[23:01:04] <zeeshan> or 7i77 :D
[23:01:17] <furrywolf> they're unpleasantly expensive, to the point I think they're just pocketing your money...
[23:01:31] <zeeshan> tell that to pcw in this channel
[23:01:32] <furrywolf> I picked up my stepper/driver sets for less than a little pcb?
[23:01:32] <zeeshan> lol
[23:01:45] <zeeshan> it's far from expensive
[23:01:49] <zeeshan> when you realize what it can do
[23:02:06] <zeeshan> but i guess if youre playing with little steppers
[23:02:10] <zeeshan> there is no point buying it
[23:02:19] <zeeshan> like the lathe uses steppers, and i dont use it there
[23:02:24] <zeeshan> i use a probotix rf there
[23:02:33] <zeeshan> (which is the biggest pos for a universal application)
[23:02:40] <furrywolf> they're mid-sized steppers... pacsci nema34, 940ozin, 8.6A/phase.
[23:02:53] <zeeshan> what bob are you using
[23:03:17] <furrywolf> a $15 ebay one, that after 30mins of use exploded.
[23:03:31] <furrywolf> http://fw.bushytails.net/bbcaps/ like that
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[23:03:40] <zeeshan> rofl
[23:03:52] <zeeshan> that looks like a well constructed bob
[23:03:58] <zeeshan> prolly just crap caps?
[23:04:06] <zeeshan> or they suddenly saw reverse voltage
[23:04:13] <zeeshan> for some reason?
[23:04:23] <furrywolf> they're counterfeits.
[23:04:25] <zeeshan> is there an isolation plane?
[23:04:29] <furrywolf> (the caps)
[23:04:41] <furrywolf> kockoff rubycons.
[23:05:07] <zeeshan> now that look at it carefully
[23:05:10] <furrywolf> knockoff
[23:05:13] <zeeshan> those 2 black chips look like isolation
[23:05:14] <zeeshan> chips
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[23:05:33] <furrywolf> no, they're just buffers.
[23:05:38] <zeeshan> o
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[23:06:18] <zeeshan> http://www.probotix.com/breakout_boards/pbx-rf_isolated_breakout_board/
[23:06:21] <zeeshan> i used that on the lathe
[23:06:41] <zeeshan> i think isolation is necessary :P
[23:07:09] <furrywolf> the stepper driver outputs are just buffered, not isolated. which is ok for me, since my drivers have optoisolated inputs. the spindle control and limit/etc inputs are optoisolated. it uses an internal 10V supply to run these, and from what I can figure out (hard to follow traces), the cap that exploded was the filter for the 10V supply.
[23:07:18] <furrywolf> the 10V comes from a lm317.
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[23:09:25] <JT-Shop> the 5i25 7i76 combo is $200 you can't beat that and get hardware step generator
[23:09:45] <furrywolf> the board design and construction seems adequate.... but it has fake caps.
[23:10:35] <furrywolf> $200 is a lot of money for me. I am not a rich wolfy. heh. and I'm not buying anything over $5 until february, as january's taxes are going to wipe my account out.
[23:17:44] <furrywolf> also, since I'm driving this from a laptop, I don't have pci slots...
[23:21:45] <JT-Shop> say goodnight Gracie
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[23:41:50] <furrywolf> looks like I could do it with the 7i43 parallel fpga board with two 50 pin plugs, a hd-db 50pin to db25 adapter, and the 7i76 step/dir/etc io board... which is a lot of parts.
[23:42:04] <Tom_itx> furrywolf, i'm using parport cards on mine
[23:42:06] <furrywolf> and I'd still be connecting to it with a parallel port.
[23:42:20] <pcw_home> Use a 7I76E
[23:42:21] <Tom_itx> gonna be using a 7I90 and 7I47
[23:42:39] <Tom_itx> pcw_home, wasn't able to save the 7i43...
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[23:43:13] <Tom_itx> i did get the parts replaced including the 2 tiny regs but the fpga started getting hot so there was likely more damage
[23:43:17] <furrywolf> pcw: I don't see it on the list of boards linuxcnc works with, and I'm really not going to spend all that money AND get stuck writing drivers.
[23:43:36] <pcw_home> 7I76E is supported by 2.7
[23:44:00] <jthornton> furrywolf, and more than $5
[23:44:47] <Tom_itx> and i only got about .6v from the 1.2v reg
[23:44:52] <Tom_itx> the 3.3 showed 3.3
[23:45:36] <Tom_itx> that one probably powers the fpga core
[23:46:24] <Tom_itx> may be a bit before i order... had to replace a frig and contents yesterday
[23:46:34] <furrywolf> I'll keep an eye out for any of them cheap on ebay, but for now, software step generation it is.
[23:46:36] <Tom_itx> that's 2 in ~ a month or two
[23:46:40] <jthornton> ewww stinky
[23:46:53] <Tom_itx> naw, we caught it before that happened
[23:47:13] * jthornton needs to get the while loop sorted out now that the first pass is sorted out
[23:47:43] <Tom_itx> jthornton, were those arcs offset too far or were they just wrong?
[23:47:48] <Tom_itx> on my post
[23:48:10] <jthornton> I don't know if the start position was off or the offsets
[23:48:10] <furrywolf> not only do I not have lots of money, I don't think this chinese mill/lathe combo is worth throwing lots of money at.
[23:48:11] <pcw_home> yeah if the 1.2V regulator failed it probably took out the FPGA (Our 6I24 proto had a interplane short between 1.2v and PC 3.3v and had a orange glowing FPGA Volcano)
[23:48:27] <Tom_itx> hah
[23:48:55] <Tom_itx> hopefully the 7i47 is still good but i'm gonna get another one anyway
[23:48:57] <jthornton> science fair volcano :)
[23:49:25] <pcw_home> Tom_itx: I may have a proto 7I90 around (or 5i24 or 6i24)
[23:50:15] <furrywolf> distinct lack of mesa boards on ebay.
[23:50:57] <pcw_home> Ive seen some of our stuff from 1988 on Ebay :-)
[23:51:30] <LeelooMinai> 1988? What was it then - tube controllers? :p
[23:51:34] <furrywolf> every other part of this project is from the '80s, so... :P
[23:51:48] <_methods> mesa tape reader lol
[23:51:59] <zeeshan> pcw_home: can you please look at my wiring diagram
[23:52:04] <furrywolf> shoptask lathe/mill combo machine, centent cn0165 drivers, round pacsci steppers,...
[23:52:04] <zeeshan> im about to hook up 5 servo drive wires
[23:52:22] <zeeshan> http://i.imgur.com/h5PDqhQ.png
[23:52:28] <zeeshan> does that look correct
[23:52:30] <furrywolf> the chinese breakout board is the only part I bought new, other than small things like wire.
[23:52:33] <zeeshan> im mostly concerned about the -24vdc wire
[23:52:34] <pcw_home> we started making disk emulators (with battery backed CMOS RAM) around 1985
[23:53:20] <furrywolf> I guess the laptop is 2007ish vintage, so it's the newest part of the system... $33. heh.
[23:53:57] <zeeshan> furrywolf you decided on getting a mesa card? :P
[23:54:05] <furrywolf> no
[23:54:20] <furrywolf> I decided on being able to pay my taxes next month, before this conversation even started. :P
[23:54:21] <zeeshan> what type of machine are you building
[23:56:47] <furrywolf> a very well used shoptask mill/lathe combo (see
http://fw.bushytails.net/shoptask02.jpg ), used pacsci 940ozin nema34 steppers, used centent cn0165 drivers, used toughbook cf-29 laptop... and for now, software stepping!
[23:56:48] <pcw_home> zeeshan: theres no particular reason the 24V common needs to be connected to analog common (at least as far as the 7I77 is concerned)
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[23:57:51] <zeeshan> pcw_home: the reason i ask is this:
[23:57:53] <zeeshan> The drives common or GND signal should be connected to the 7I77 power GND with a separate wire.
[23:57:54] <Tom_itx> pcw_home, i'm good with protos :)
[23:57:56] <zeeshan> thats what it says in the manual
[23:58:08] <furrywolf> either a pair of iota 24v supplies wired in series for 56v, or a homebrew 60v unregulated, not sure yet.
[23:58:11] <zeeshan> my 7i77 power ground goes to -24vdc..
[23:58:19] <zeeshan> thats why im sending the drive common to -24vdc
[23:59:03] <Tom_itx> dunno what the 5i24 or 6i24 are exactly..
[23:59:08] <pcw_home> Theres no real reason the 24V supply cannot float (unless it makes a wiring mess)
