#linuxcnc | Logs for 2018-08-20

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[00:00:14] <_unreal_> pfred1, are you still using the 555 timmer?
[00:00:21] <pfred1> sometimes
[00:00:30] <_unreal_> palm to face..... do you have an arduino
[00:00:36] <pfred1> I have a few
[00:01:09] <_unreal_> ok. why not just use the arduino to output a step pulse train that is adjustable with a POT. and you can change DIR as well.
[00:01:13] <pfred1> it is easier to whip up a 555 timer circuit than program an arduino though
[00:01:17] <_unreal_> and control ether phase OR step/dir
[00:01:21] <_unreal_> not much coding to do that
[00:01:34] <pfred1> changing dir is not important testing a drive
[00:01:36] <_unreal_> the code is already there
[00:01:36] <Tenacious-Techhu> pfred1: https://www.electronicdesign.com
[00:02:21] <pfred1> by the time i got to dir changing I just hooked it up to LinuxCNC
[00:02:50] <pfred1> https://www.youtube.com
[00:05:02] <pfred1> here's a 555 timer https://www.youtube.com
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[00:07:47] <_unreal_> do you guys things this is a good deal? $$$ https://www.aliexpress.com
[00:08:22] <pfred1> _unreal_ what voltage are those motors rated?
[00:08:42] <pfred1> how many amps?
[00:09:00] <pfred1> microhenries?
[00:09:27] <pfred1> volts and amps will give the torque curve profile though
[00:09:29] <Tenacious-Techhu> pfred1, did you read that article yet?
[00:09:57] <pfred1> don't get hung up on holding torque
[00:10:08] <pfred1> it is how the motor moves that matters
[00:10:46] <_unreal_> i'm not to sure there isnt much for details
[00:10:50] <pfred1> chinese stepper motors are crap
[00:11:17] <pfred1> it'd probably be OK for magnet fishing though
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[00:13:13] <pfred1> and ths shipping on them makes them less than a great deal
[00:13:40] <pfred1> ain't nobody shipping stepper motors for free
[00:14:35] <pfred1> last time i looked I found some nice used motors in florida
[00:15:03] <_unreal_> I dont see the shipping price listed
[00:15:23] <_unreal_> found in florida?
[00:15:26] <pfred1> whenever i look at nema 23 motors out of china they all seem to cost money to ship to me
[00:15:49] <pfred1> usually more in shipping than what the motors cost
[00:16:09] <pfred1> yeah person selling them was in florida
[00:16:20] <_unreal_> I dont see a shipping price
[00:16:23] <pfred1> they were pulls out of equipment
[00:16:36] <pfred1> does it say free shipping?
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[00:17:03] <pfred1> chiese stepper motors generally don't perform so well
[00:17:06] <MarcelineVQ> .
[00:17:10] <MarcelineVQ> woops :>
[00:17:23] <pfred1> having your period?
[00:17:44] <MarcelineVQ> trying out my registered user state
[00:17:49] <_unreal_> 23HS2430B
[00:17:51] <_unreal_> Thats the motor
[00:18:15] <pfred1> good stepper motors are high precision
[00:18:31] <_unreal_> I see one issue. those motors are rated for 3amps max. and the motor controllers are micro stepping so you can pull 6 amps per motor, and 4 motors
[00:18:56] <pfred1> 3 amps a phase?
[00:18:59] <_unreal_> though thats assuming they are set to FULL current driving of 3 amps. so
[00:19:00] <_unreal_> yes
[00:19:11] <_unreal_> the power supply is 36v 9amps
[00:19:12] <_unreal_> lol
[00:19:24] <pfred1> yeah the faster you run steppers the less current they tend to draw
[00:19:44] <pfred1> that's due to inductive reluctance
[00:20:16] <pfred1> so don't expect to be pulling 3 amps with them running
[00:20:38] <Tenacious-Techhu> pfred1, did you read that article?
[00:20:46] <pfred1> what article?
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[00:21:42] <Tenacious-Techhu> https://www.electronicdesign.com
[00:22:11] <pfred1> We couldn't find the page you were looking for.
[00:22:24] <Tenacious-Techhu> One sec, I'll dig up the cached version...
[00:22:40] <MarcelineVQ> current limit your drivers if you're worried about it, drivers tend to fail before motors though, motors get hot first.
[00:23:07] <pfred1> MarcelineVQ if your motors are getting really hot you're pushing too much current throug hthem anyways
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[00:23:23] <pfred1> more current won't make a stepper motor run better
[00:23:28] <MarcelineVQ> yes, or they're being driven in a dumb way
[00:23:28] <pfred1> they tend to cog then
[00:24:10] <pfred1> stepper motors are logically backwards to how one would think a motor works
[00:24:26] <pfred1> which is why people with money run servos
[00:24:37] <Tenacious-Techhu> O.K., this link should be fresh... https://www.electronicdesign.com
[00:24:49] <MarcelineVQ> servos getting cheaper every day :>
[00:25:06] <pfred1> Tenacious-Techhu I've seen videos of people putting that kit together
[00:25:19] <Tenacious-Techhu> The article isn't about the kit.
[00:25:24] <Tenacious-Techhu> That's just eye candy.
[00:25:27] <_unreal_> closesed I can find to a manual
[00:25:28] <Tenacious-Techhu> Read the article.
[00:25:28] <_unreal_> https://www.aliexpress.com
[00:26:01] <pfred1> Tenacious-Techhu you think stepping a stepper motor is a high precision task?
[00:26:20] <Tenacious-Techhu> When done right, YES.
[00:26:28] <pfred1> there are drives with like 40% variance between steps
[00:27:05] <pfred1> yeah to just get the motors to spin it isn't that critical
[00:27:14] <Tenacious-Techhu> So your goal is to only do slightly better than cheap Chinese crap?
[00:27:31] <pfred1> my goal was just to make sure the drives could run at speed
[00:27:43] <Tenacious-Techhu> The goal isn't to have the motor spin; the goal is to have the motor stop at the right place, and not overshoot.
[00:27:44] <pfred1> you'd be surprised how tricky that is to do
[00:28:05] <pfred1> not when I'm testing my drives out it isn't
[00:28:23] <Tenacious-Techhu> Regardless, the article is pretty damn clear that no modern circuit should be designed with a 555 timer.
[00:28:37] <pfred1> why not?
[00:28:45] <_unreal_> Tenacious-Techhu, What do you think of those motors and the motor driver kit I posted?
[00:29:09] <pfred1> chinesem otors ain't worth what it costs to ship them
[00:29:36] <Tenacious-Techhu> _unreal_, I never buy parts from alibaba or aliexpress on principle. If I wanted something like that, I'd buy from Sparkfun or Pololu, or some other company I recognize.
[00:29:50] <pfred1> I buy from ali all the time
[00:29:51] <Tenacious-Techhu> When buying from China, there's no telling what knock-off IC is being used.
[00:29:52] <MarcelineVQ> 'some other company, that orders from alibab or aliexpress'
[00:30:09] <Tenacious-Techhu> And they rarely, if ever, supply sufficient datasheets for the part.,
[00:30:47] <pfred1> the v 1.2 TB6600 drives coming out of China are OK
[00:31:02] <pfred1> they'r what i use now they're a bit better than my old homemde drives
[00:31:13] <pfred1> can't beat the price either
[00:33:23] <pfred1> https://www.aliexpress.com
[00:33:35] <pfred1> those are legit
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[00:37:49] <pfred1> _unreal_ the shipping shows up for me
[00:37:58] <pfred1> Total Price:
[00:38:00] <pfred1> US $94.37
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[00:39:19] <pfred1> the electrical spec looks good on those motors but I wonder if they have the stator in there right
[00:39:48] <pfred1> chinese motors usually aren't tight enough
[00:40:01] <_unreal_> So I ask one more time what are your thoughts on the spects provided by the last link I posted
[00:40:07] <_unreal_> of the motors?
[00:40:11] <_unreal_> I've got that link saved
[00:40:16] <_unreal_> same thing at amazon as well
[00:40:18] <pfred1> they're probably crap
[00:40:54] <_unreal_> exact same kit on amazon and it has good reviews
[00:41:00] <pfred1> there are teeth inside stepper motors
[00:41:48] <pfred1> they're no Vextas let's just put it that way
[00:42:21] <pfred1> the again one Vexta costs more than that whole kit does
[00:42:39] <_unreal_> So then its not bad for the price
[00:42:49] <pfred1> that could be
[00:43:07] <pfred1> they could well do the job
[00:43:15] <_unreal_> I'm already spending a small fortune on rails the computer stuff that I just linked
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[00:43:22] <pfred1> gantry routers son't need more than 250 oz/in anyways
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[00:43:37] <pfred1> unless it is huge
[00:43:53] <_unreal_> mine isnt going to be huge but heavy yes
[00:44:11] <pfred1> yeah then you need torque
[00:44:22] <pfred1> it is all about acceleration
[00:44:31] <_unreal_> I expect the moving gantry arch and Z to be around 50-90+ lbs
[00:44:40] <pfred1> the faster you can get going fast the faster you're running
[00:44:50] <_unreal_> depending on which direction I bridge over the main base
[00:45:02] <pfred1> you can only try
[00:45:08] <_unreal_> I'm leaning bridging over the longer side
[00:45:37] <pfred1> well this kit could get you going then down the road if you want more performance you can upgrade
[00:45:38] <_unreal_> which will mean a biefer axis
[00:46:02] <pfred1> it is damned cheap as a whole kit
[00:46:20] <_unreal_> If I go the wide way. I need 2 steppers to drive the axis
[00:46:39] <_unreal_> Idont feel like running a 34+" belt
[00:47:22] <_unreal_> for a single motor
[00:47:38] <_unreal_> not a fan of the risk's
[00:47:52] <pfred1> oh so this is only one motor and a drive
[00:47:58] <_unreal_> ok going to bed almost 1am and I got to get up by 6 :P
[00:48:03] <_unreal_> huh?
[00:48:12] <pfred1> ACT Motor 1PC Nema23 Stepper Motor 23HS2430B Dual Shaft 4-Lead 425oz-in 112mm 3.0A Bipolar+1PC Driver DM542 4.2A 50V 128Micro
[00:48:15] <_unreal_> https://www.amazon.com
[00:48:32] <_unreal_> dude that is the ONLY link I found that had details on the motor
[00:48:34] <_unreal_> motors
[00:48:41] <pfred1> hmmm $340
[00:48:50] <_unreal_> free shipping
[00:48:57] <_unreal_> so its the same price as banggood
[00:49:07] <pfred1> you're paying for that shipping in the price
[00:49:14] <_unreal_> same diff
[00:49:24] <_unreal_> infact its cheaper by $10
[00:49:36] <pfred1> I just hope those motors are decent
[00:49:50] <_unreal_> I have not ordered anything yet
[00:49:58] <pfred1> until you run them there's no way of knowing it's not like they're giving yo ua torque curve
[00:50:01] <_unreal_> went into my watch list.
[00:50:22] <pfred1> holding torque is meaningless
[00:50:25] <_unreal_> considering the size of the machine I'm building
[00:50:34] <_unreal_> I dont think they will much matter
[00:50:53] <_unreal_> will only matter when testing a full load. I.E. cutting metal
[00:50:53] <pfred1> 425 oz/in motor should be plenty powerful
[00:51:17] <_unreal_> I have all the stuff to GEAR them down with pullys as well
[00:51:19] <_unreal_> cogs
[00:51:22] <pfred1> that's not really when yo uneed power
[00:51:32] <_unreal_> ?
[00:51:35] <pfred1> it is during rapid moves
[00:51:37] <_unreal_> oh ya cutting metal
[00:51:57] <pfred1> cutting isn't really a big deal for the axis
[00:52:01] <_unreal_> if I get the offline controller setup working its not going to go fast anyways
[00:52:35] <_unreal_> the only time rapids will be used is prob machine code
[00:52:40] <_unreal_> ok i'm out
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[01:25:05] <fragalot> hi
[01:25:14] <XXCoder> yo
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[01:26:07] <XXCoder> geez tues will be 91f and partially cloudy
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[01:30:29] * fragalot wonder when the truck will get here
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[01:30:52] <fragalot> maybeI should go shower & go to the toilet to speed up the process
[01:30:53] <fragalot> :P
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[02:36:13] <XXCoder> At youtube: "Published on Nov 23, 2014 · 1 day ago"
[02:36:48] <MarcelineVQ> at least they're consistent
[02:38:04] <fragalot> that seems to be a bug that crops up every now and again
[02:38:19] <fragalot> may be due to the youtuber hiding & re-publishing the video
[02:38:36] <XXCoder> maybe
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[02:51:42] * fragalot hates waiting
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[03:05:48] <Deejay> moin
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[03:13:49] <Tenacious-Techhu> XXCoder, anything that does STEP-NC?
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[03:36:08] <fragalot> I keep hearing trucks getting my hopes up, but it keeps being a garbage truck :P
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[03:43:06] <selroc> log
[03:43:07] <c-log> selroc: Today's Log http://tom-itx.no-ip.biz:81
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[04:43:25] * Loetmichel just used the third "demo" start of cambam... MAAAN why didnt i buy that software six jears ago? ... just took a 4mm sheet metal drawing... "here a 2.5mm deep pocket with a 6mm mill bit, there 480 air holes from 2,5mm to 4.1mm deep with a 2mm mill bit, then a few 3.1mm holes for mounting with a 2mm bit, outer contour cutout, done... with the old "software" i would still be clicking
[04:43:25] * Loetmichel on the air holes... and the mill is faster, too because it doesent mill "in air" 60% of the time... ;)
[04:47:50] <Loetmichel> ... still waiting on the license key though... to my surprise the boss ordered it the moment i showed him how much faster it is with that instead of using a 15 year old freeware tool ;)
[04:55:37] <fragalot> :)
[04:56:30] <fragalot> how come you haven't gotten the license key yet?
[04:56:37] <fragalot> I thought that was nearly instantaneous
[04:56:56] <fragalot> or do you have to pay the invoice first & does your boss like to wait the legal 90-day term before paying it
[05:00:34] <Loetmichel> i think they send the key by email the moment they get the money... but that can take a while with german banks
[05:01:45] <fragalot> s/german//
[05:02:07] <fragalot> I still don't get why it has to take this long given that it's literally all digital anyway
[05:02:20] <fragalot> it's not like they have to ship little mini pallets of gold around anymore
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[05:09:36] <rmu|w> it doesn't have to, but banks use in-transit-money for all sorts of things
[05:15:02] <fragalot> GAH
[05:15:19] <fragalot> apparently the mill that was supposed to be delivered today is only going to get picked up today
[05:15:26] <fragalot> so I took the day off for no reason
[05:15:54] * fragalot is not happy
[05:16:14] * syyl_ gives fragalot a hug
[05:16:48] <fragalot> :(
[05:16:54] <syyl_> :)
[05:17:05] <syyl_> then you still can use the day for something usefull!
[05:17:08] <fragalot> going to get into work this afternoon I think.. don't really have all that much time off to spare
[05:17:15] <fragalot> and i'll need it for when the actual delivery happens
[05:17:27] <XXCoder> fire and brimstone tomorrow and tues
[05:17:36] <XXCoder> its already so bad its like fog here
[05:17:42] <fragalot> ^ that too. weathre is going to be horrible the rest of the week
[05:18:03] <XXCoder> while I work indoors, its like outdoors anyway wjhat with huge garage doors open
[05:24:51] <fragalot> I used to work in a shop like that
[05:25:01] <fragalot> was hell in winter as all the coolant froze in the machines
[05:25:16] <XXCoder> it never gets that cold in shop here
[05:25:28] <XXCoder> even snowing outside its maybe 65f inside
[05:25:36] <XXCoder> its hot end that sucks
[05:28:45] <fragalot> the place I work at now in the shop it's like a greenhouse
[05:29:10] <fragalot> the minute the sun comes peeking out from behind a cloud the temperature rises by 5°C
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[05:58:04] <jthornton> morning
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[06:17:01] <XXCoder> fragalot: fun
[06:17:19] <XXCoder> I work 2nd shift so its already near peak by time I come in
[06:17:30] <fragalot> ew. :P
[06:17:34] <XXCoder> it peaks 2 hours later and stays pretty hot for few more hours then taper off
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[06:21:03] <fragalot> lbbl
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[06:22:37] <jthornton> our temps dropped 10 degrees for the next few days
[06:23:34] <XXCoder> nice. here its 91f then 90f
[06:23:36] <XXCoder> fun
[06:23:51] <XXCoder> essentally hell and brimstone, tons smoke here
[06:24:45] <XXCoder> sadly it might be new normal summer
[06:25:47] <Tom_L> 66�F Hi 80 yay!
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[06:33:08] <jthornton> we are not quite that low here
[06:49:47] <miss0r> Tom_L: we have the same here. Its a blessing after this hot summer
[06:50:45] <XXCoder> mind send over some of cold air here
[06:50:57] <XXCoder> not much just enough to get temp down to 85f something
[06:51:04] <miss0r> yeah I would mind, this is mine !:D
[06:51:27] <XXCoder> aww lol
[06:52:13] <miss0r> ... don't you just love being forced to reboot a server remotely & waiting what seems forever for it to come back online? :D
[06:52:30] <XXCoder> lol last time I had to do that was years ago
[06:52:42] <XXCoder> I was doing my homework on my pc... from reserant
[06:52:43] <miss0r> Yeah, me too. But I am in that situation right now
[06:52:46] <XXCoder> had to reboot
[06:53:13] <miss0r> did it come back online? :D
[06:53:24] <XXCoder> yeah thnkfully
[06:53:41] <miss0r> I'm beginning to get a warm & fuzzy feeling inside about this.
[06:53:46] <miss0r> (not the good kind)
[06:53:47] <XXCoder> my worse homework ever I had to use terminial to college computer from my sidekick2
[06:54:14] <XXCoder> I forgot to do that homework, and I had only hours no time to go anywhere
[06:54:24] <XXCoder> got A
[06:54:27] <miss0r> damn :D
[06:54:57] <miss0r> This is starting to have that unmistakable stench of me having to go for a drive :/
[06:55:20] <XXCoder> I remember this strange project hardware
[06:55:33] <XXCoder> its networked circuit that presses button on server
[06:55:41] <XXCoder> or rather, "presses" it
[06:55:57] <XXCoder> it simply sends current directly to wires for power button
[06:56:16] <miss0r> :) well, this server hase one of those network interfaces that is always on, that allows me to do that. BUT since it moved it has never been reimplimented :-/
[06:58:33] <XXCoder> well you got good reason now
[06:59:53] <miss0r> luckily I knew someone in there, who was onsite. apparently it decided to give a bios announcement that the keyboard was not attached :-/ It never did that before
[07:00:30] <XXCoder> weird
[07:00:49] <miss0r> that is realy weird.
[07:01:00] <miss0r> I mean, its an IBM x3650 something
[07:01:05] <miss0r> They should just fire right up
[07:01:32] <XXCoder> "keyboard not connected error, press F1"
[07:02:04] <miss0r> oh well... There are only a few services still left running on that thing. Most of what it used to do is now running on the amazon cloud. Within the next two months it will be taken down
[07:02:07] <miss0r> yeah
[07:06:34] <miss0r> I have all the services back online now. *phew*
[07:06:51] <XXCoder> :)
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[07:09:16] <fragalot> Hi
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[07:16:55] <selroc> hello
[07:17:51] <miss0r> o/
[07:17:56] <miss0r> did the mill come yet?
[07:18:11] <selroc> I don't remember who has posted it, this is a cool machine https://www.youtube.com
[07:19:14] <miss0r> ye flipping god! I'm getting seasick!
[07:21:32] <XXCoder> off to bed I go
[07:21:42] <XXCoder> yeah that videos pretty bad
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[07:31:28] <fragalot> miss0r: no, apparently it hasn't even been picked up yet
[07:31:37] <miss0r> >.< !
[07:31:46] <fragalot> exactly my thoughts
[07:32:00] <miss0r> well then.. Not like you took the day off or anything
[07:33:49] <fragalot> I did.
[07:34:10] <miss0r> I know :D
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[08:13:53] <Loetmichel> maan, XXCoder and fragalot have it easy... just measured in the workshop after having the shopvac running for 4 hours (vacuum table)... 39°C (102F)... :-)
[08:14:02] <Loetmichel> its like a sauna in there already
[08:25:39] <Deejay> no windows?
[08:25:47] <Deejay> 19°C outside...
[08:26:20] <fragalot> Loetmichel: you mean I have it easy in my AC equipped office?
[08:26:23] <Loetmichel> Deejay: no windows. no air exhaust at all ;)
[08:26:24] <fragalot> how dare you :D
[08:32:27] <gloops> its humid here
[08:32:46] <gloops> not really hot but very crappy
[08:38:23] <fragalot> 87% humidity @ home right now
[08:42:29] <gloops> well, ive populated my new (old) windows PC with everything i need to draw, i think ill be staying with windows for a while, with linux on seperate boot
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[09:05:04] <miss0r> quite nice here: 20c 53% humidity
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[09:17:06] <syyl_> 24 inside :)
[09:17:12] <syyl_> rain would be nice
[09:17:43] <syyl_> just finished scraping/rebuilding another schaublin cross slide.. :D
[09:18:31] <Loetmichel> syyl_: nope... rain would be bad... would have to run to close my cars canopy then ;)
[09:18:49] <syyl_> your car situation is a personal problem ;)
[09:18:54] <Loetmichel> (i parked it with open hood this morning ;)
[09:19:11] <Loetmichel> indeed, still i dont want to run ;)
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[09:36:04] <fragalot> syyl_: you getting better (read: faster) at scraping? :)
[09:36:30] <syyl_> 20hours for a complete x/y of a schaublin 102
[09:36:32] <syyl_> :)
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[09:38:13] <fragalot> not bad :)
[09:39:56] <syyl_> included fitting a new tapered gib
[09:39:57] <syyl_> :)
[09:40:56] <Loetmichel> hrhr... just made a tool to mount M3 "rivet in" bolts into a 4mm thick alu front panel... about 22 rivets set, the 6mm steel shaft i used to make the tool is already mushroomed to 12mm diameter on the back... shouldnt have used mild steel for that i think ;)
[09:42:08] <Loetmichel> ... or maybe i should not use so much force (and a smaller hammer?)
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[09:43:21] <fragalot> Loetmichel: or a brass hammer.. round the hammer instead P
[09:43:22] <fragalot> :P
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[09:56:50] * JT-Shop needs a cheap pwm drive and motor to test with
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[10:28:40] <pcw_home> https://www.ebay.com
[10:28:55] <pcw_home> about as cheap as you can get...
[10:29:32] <Loetmichel> JT-Shop: define "cheap PWM drive and motor" in size/voltage/power
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[10:31:09] * Loetmichel has made PWM controllers for forklifts... only 1200A peak capability at 60V... not THAT cheap though ;9
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[10:32:18] <jthornton> that's cheap enough for sure thanks
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[10:37:10] <JT-Shop> Loetmichel: none of that matters, I just need to test the pwm output from a 7i96
[10:37:19] <Loetmichel> ah
[10:37:21] <Loetmichel> i see
[10:37:29] <Loetmichel> was a valid question though
[10:38:09] <jdh> use a scope instead?
[10:38:14] <SpeedEvil> L298 is terrible though.
[10:38:18] <pcw_home> Do you have a small DC motor with encoder? we have a bunch of 19V 3A plotter motors around
[10:38:29] <SpeedEvil> (~5V or so drop)
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[11:50:09] <fragalot> man this weather station has the WORST screen I have ever seen
[11:50:34] <fragalot> nice color LCD, but the viewing angle is like a 2° window, and it's a top-view but tilts back when put on a flat surface
[11:50:47] <fragalot> so if you put it on your desk and look at it, it's just black
[11:51:09] <fragalot> if you put it on a wall, it has to be near hip height or it's also black
[11:51:50] <jdh> return it.
[11:52:08] <fragalot> will do that tomorrow
[11:52:44] <fragalot> I also like how it has batteries for backup power, except it doesn't actually appear to keep the date time settings if you unplug it
[11:52:47] <fragalot> :P
[11:54:10] <gloops> post on DIY cnc machines facebook might interest you fragalot
[11:54:23] <gloops> Jeff Dill building epoxy mill
[11:54:42] <fragalot> it's facebook, so I can't see it anyway
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[11:58:42] <gloops> https://ibb.co
[12:00:14] <fragalot> solid design, table could be wider with the rails flipped around
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[12:02:10] <gloops> some doubts over his using steppers
[12:02:43] <fragalot> depends on the torque they put out and his expected speeds
[12:03:25] <fragalot> I went with hybrids for my build, because I wanted the reliability of servo's with the price tag of steppers :D
[12:05:14] <Loetmichel> fragalot: arent the hybrid stepper drivers expensive?
[12:05:24] <fragalot> compared to normal steppers: yes
[12:05:28] <fragalot> compared to servo's? no
[12:06:41] <gloops> also the ballscrews to consider
[12:07:21] <fragalot> 5x16 should be alright for that size
[12:09:46] <gloops> steppers + c7 ballscrews - forget .00
[12:10:31] * jthornton just tossed out a plotter a few weeks ago
[12:11:33] <fragalot> gloops: yup.. 50µm / 300mm.
[12:11:59] <gregcnc> screw comp
[12:12:36] <fragalot> gregcnc: does that include variable backlash?
[12:14:21] <gregcnc> 50USD screws?
[12:14:40] <fragalot> no, screw comp
[12:15:15] <gregcnc> you can get preloaded C7 screws
[12:15:16] <skunkworks> anyone have experiences with a goodish cheap digital storage scope?
[12:15:35] <fragalot> skunkworks: yes
[12:15:45] <fragalot> first question: what do you want to use it for?
[12:16:09] <skunkworks> mainly replacing a 60mhz B&K from the 80's
[12:16:18] <skunkworks> general electronics..
[12:16:40] <fragalot> can't really go wrong with most budget 100Mhz scopes then
[12:17:03] <skunkworks> might even be 30mhz. ;)
[12:17:13] <jdh> and they are small enough to keep around
[12:17:34] <fragalot> skunkworks: do you need digital channels, or only analog?
[12:17:38] <fragalot> and how many
[12:17:48] <skunkworks> heh - cradek, what was the one that you had at the fest in wichita?
[12:20:09] <fragalot> i've got the well known rigol DS1052E at home, with the 100Mhz 'hack', and use a rigol MSO2202A-S at work
[12:20:26] <fragalot> the home one is VERY basic, the one at work is great for embedded development
[12:21:02] <skunkworks> I remember that. As far as digital lines - I don't know.
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[12:23:17] <cradek> skunkworks: I love my tek 2232 but I don't recall traveling with it
[12:23:38] <cradek> I also have a 466, which is analog storage
[12:23:52] <skunkworks> hmm - I wonder who's we used..
[12:24:10] <fragalot> for travel we have an older tektronix.. great little portable scope
[12:24:12] <cradek> jepler just bought a cheapish pure digital
[12:24:24] <fragalot> 100Mhz, 4 channels that fully float up to 600V
[12:24:54] <cradek> if my 2232 died I would try to find another one for reasonable cost. the best part is you can switch it to analog mode and then it's full analog.
[12:24:57] <skunkworks> ah - https://www.youtube.com
[12:25:02] <fragalot> only annoying thing is that it uses CF cards for storage :p
[12:25:14] <skunkworks> tds 320
[12:25:25] <cradek> oh that's not mine, I've never had a full digital
[12:26:14] <jdh> I have a tds3045 and 2024 in a drawer here
[12:26:14] <cradek> that's clearly me sitting to the left though
[12:26:20] <skunkworks> wow - the ms02202a-2 are expensive...
[12:26:30] <skunkworks> cradek: yes :)
[12:27:38] <skunkworks> I know I had looked at the rigol DS1052E a while back
[12:27:46] <fragalot> skunkworks: well, it IS a lot of scope :-)
[12:28:00] <fragalot> my main gripe with the DS1052E is that it's very low resolution, screen wise
[12:28:10] <fragalot> if you're OK with that, it's an alright scope for the money
[12:28:17] <fragalot> if you have a bit more, get one of the 1000Z series
[12:29:05] <fragalot> or a siglent.. or any of the other budget brands. There aren't all that many bad ones these days :-)
[12:29:31] <skunkworks> like https://www.ebay.com
[12:30:27] <fragalot> if you're OK with the 50Mhz bandwidth, sure
[12:31:00] <jdh> can't you make it 100 + decode?
[12:31:45] <Roguish> cradek: hey I have a 2246. like it a lot.
[12:31:47] <jdh> owon cheapies have high res screen but low res front end
[12:32:00] <fragalot> jdh: probably, i've not checked for the Z series
[12:33:16] <fragalot> PS. if you contact a dealer it's possible they will throw in some upgrade options for free
[12:33:22] <fragalot> they did for our MSO2202A-S anyway
[12:33:33] <fragalot> but I guess that's a different budget clas
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[12:51:36] <gloops> 1 000 000% inflation in Venezuala, where did it all go wrong
[12:51:55] <jdh> MVGA!
[12:52:25] <fragalot> gloops: a looong time ago
[12:52:26] <gloops> venezuala was always great!
[12:52:36] <fragalot> it's been a hell hole for ages
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[12:53:40] <gloops> i wonder which extremist ideology will take root now
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[12:58:43] <miss0r> so what I hear is: if you want to be a millionaire, move to Venezuala
[12:59:52] <fragalot> :D
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[13:08:49] <gloops> biggest oil reserves in the world - no toilet paper
[13:09:05] <fragalot> gloops: one word: corruption
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[13:11:38] <gloops> some bad luck as well, oil price collapse etc
[13:11:52] <fragalot> mostly corruption
[13:13:05] <gloops> also socialism
[13:13:34] <gloops> chavez raised the minimum wage 3600%
[13:14:27] <fragalot> don't forget the large scale corruption
[13:16:09] <skunkworks> and large scale corruption
[13:16:15] <fragalot> https://www.youtube.com
[13:16:23] <fragalot> I think that is the mots detailed rebuild video I have seen so far
[13:17:01] <gloops> well i dont know, a bit of cream is always skimmed off the top in these places
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[13:20:44] <miss0r> fragalot: And just when I thought I was going to have a productive evening :D
[13:22:31] <fragalot> miss0r: ha.
[13:22:40] <miss0r> I'll get you some day for this!
[13:22:54] <fragalot> no you won't :-)
[13:23:55] <miss0r> and if I do, you would never make the same mistake as me; admiting it!
[13:24:20] <fragalot> I never make mistakes
[13:24:21] <fragalot> :D
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[13:24:26] <miss0r> bah
[13:25:45] <miss0r> also; please complete your CNC before embarking on such a restoring job on your new mill ;)
[13:26:59] <fragalot> haha, yeah
[13:27:09] <fragalot> i'm assuming it's going to be in good enough condition that it is ACTUALLY USABLE
[13:27:50] <miss0r> you also assumed you'd have it today.. how did that assumption work you? :�
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[13:29:01] <fragalot> I was going off of information that was given to me, that was not my mistake.
[13:30:12] <miss0r> also true. But would you say the same is true about the state of the machine?
[13:30:23] <miss0r> also: Damn that is a nice rebuild
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[13:31:50] <fragalot> it really is :D
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[13:31:58] <fragalot> i've only half-watched the first half whilst cooking
[13:32:03] <fragalot> so no spoilers
[13:32:07] * fragalot gares
[13:32:09] <fragalot> glares*
[13:32:18] <fragalot> .. that was the keyboard making a mistake, not me.
[13:32:34] <miss0r> right - because you never make mistake ;)
[13:33:20] <fragalot> Exactly.
[13:33:35] <fragalot> adapt, improvise, overcome.
[13:34:48] <miss0r> You just felt like writing that, didn't you?
[13:36:31] <gloops> and if that fails, a total pig headed refusal to accept the facts will see you through
[13:37:39] <fragalot> ^
[13:37:53] <fragalot> worked for venezuela
[13:38:03] <miss0r> define 'worked'
[13:38:12] <fragalot> the number in their bank accounts skyrocketed
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[13:39:32] <miss0r> alright then, it worked ;P
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[14:01:09] <fragalot> this is great
[14:01:23] <fragalot> I can sign up for notifications on status changes on the tracking number for my mill
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[14:01:41] <fragalot> last status change was 4 hours ago, and I just got an email now that i've opened the web page to check on it manually
[14:01:51] <skunkworks> status changed - reason unknown
[14:01:59] <fragalot> I'm wondering if that's what triggered it, or if it's just concidental and they update the email system at 8pm
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[14:07:09] <Tom_L> skunkworks, https://www.amazon.com
[14:08:05] <fragalot> the Z zeries really is a LOT nicer
[14:09:25] <Tom_L> https://www.top5reviewed.com
[14:09:49] <skunkworks> that one has already been 'hacked'?
[14:10:28] <JT-Shop> dang $61 to ship some boxes to me from uline...
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[14:10:41] <Tom_L> i generally use a logic analyser and don't have a rigol but i've heard of alot of guys getting and liking them
[14:10:45] <fragalot> JT-Shop: and that's before you find out they charge $7 per box
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[14:11:07] <Tom_L> i've got an old phillips 100Mhz
[14:11:34] <Tom_L> seldom use it
[14:11:37] <JT-Shop> prices per box is reasonable but shipping sucks
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[14:12:06] <Tom_L> i got 2 probes smaller than a dime and cost me 11 + shipping
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[14:13:09] <Tom_L> i figured i'd get 2 to get my value from shipping
[14:13:23] <Tom_L> if there is such a thing
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[14:33:28] <jthornton> yea I'm going to inventory my boxes and add some more to the order to get the cost per box down
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[14:33:46] <miss0r> I just dropped a M1.8 for my one of my indexable tools on the lathe into the chip tray
[14:34:33] <jthornton> and the chip tray is never clean when that happens
[14:34:54] <miss0r> I FSCKING FOUND IT !
[14:35:08] <miss0r> well, it was close to clean, but that screw is minute!
[14:35:16] <roycroft> it's like finding a drill bit in a swarf stack
[14:35:26] <jthornton> you better buy a lottery ticket if you guys have that stuff
[14:35:40] * roycroft is back from holidays
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[14:36:37] <fragalot> miss0r: haha, good job you cleaned recently
[14:36:43] <fragalot> also - buy a pack of spare screws
[14:37:49] <miss0r> fragalot: I thank my lucky star.
[14:38:30] <fragalot> you're welcome
[14:39:11] <miss0r> Get over yourself :]
[14:40:01] <fragalot> never
[14:45:34] <miss0r> fragalot: amongst the stuff my friend brought over last was a cute little assortment of slitting saws. those 32mm ones. ranging from 0.2mm thickness to 0.8
[14:45:50] <miss0r> I just need to make a small arbor for them. they fit on an 8mm shank
[14:45:58] <fragalot> sweet
[14:46:22] <fragalot> I remember ordering a few of those and getting unexpected extras because they're so thin & stuck together during order picking
[14:46:38] <miss0r> yeah :] they feel like handeling shims
[14:47:14] <miss0r> I also got a 55degree cutter for 16mm shank :D
[14:47:26] * fragalot also has multiple 55 degree cutters
[14:47:28] <miss0r> but it is only 12.5 mm tall
[14:47:32] <miss0r> :�
[14:47:35] <fragalot> oh mine are HUGE :D
[14:48:13] <miss0r> hehe :D I've already got use for one of the small slitting saws
[14:48:25] <miss0r> I need to make a 0.86mm wide slot in a screw head
[14:49:06] <miss0r> and doing that with a 0.8mm endmill is just suicide
[14:49:21] <miss0r> well, it will make you want to commit suicide, is what I was getting at
[14:50:11] <fragalot> what you need is a good high speed head :D
[14:50:43] <miss0r> yeah.. that would be nice
[14:50:57] <miss0r> but you still can't beat the slotting speed of a slitting saw
[14:51:03] <fragalot> very true
[14:51:18] <fragalot> are you expecting any deflection, or is the arbor going to choke up on it?
[14:52:09] <miss0r> Well, theres always 'some' deflection. But I'm planning to make the arbor of a 16mm chrome nickel rod.
[14:52:20] <miss0r> and just have the very end fit the bore
[14:52:33] <miss0r> with a 16mm spacer on the other side clamping it in
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[14:53:14] <miss0r> I think deflection will be minimal
[14:53:26] <fragalot> 8mm left to slot with, with a .8mm thickness.. Should be acceptable
[14:53:51] <miss0r> I think it will...
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[14:54:10] <miss0r> but hanging a 32mm disk at the end of an 8mm rod - even with spacers in there, will be wonky at best
[14:54:28] <fragalot> lol of course
[14:54:39] <fragalot> you'd need at least 10mm
[14:54:48] <miss0r> heh
[14:55:06] <miss0r> anyway, a fairly short 16mm rod will do the trick, not even breaking a sweat
[14:55:10] <fragalot> with an O-ring friction drive to make sure you can't bind it up
[14:55:21] <fragalot> yeah i've used 16mm for mine too
[14:55:46] <miss0r> yeah, no...
[14:55:58] <fragalot> relieve the clamping washer/spacer a bit
[14:56:43] <miss0r> and stick an o-ring in there? :S
[14:56:48] <fragalot> that was a joke
[14:56:50] <miss0r> I would rather not
[14:57:01] <miss0r> you never know, when it comes to you :]
[14:57:04] <fragalot> :D
[14:57:55] <miss0r> yeah. I think I might go ahead and harden the tool, grind ect
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[15:30:44] <JT-Shop> I guess I'll go bend some pipes to finish my day
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[16:42:52] <Deejay> gn8
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[17:14:53] <infornography> will pycam generate Gcode in inches?
[17:23:48] <gloops> hmm, not used it, Ichs knows it but not here atm
[17:24:25] <infornography> what do you use?
[17:25:06] <gloops> various apps really, havent you tried fusion360?
[17:27:09] <Tom_L> i can't see why it wouldn't
[17:27:13] <JT-Shop> for simple G code or complex stuff?
[17:27:15] <Tom_L> most cad cam can do both
[17:28:29] <Tom_L> http://pycam.sourceforge.net
[17:28:31] <Tom_L> Measurement unit: millimeter or inches
[17:29:46] <infornography> appsolutle
[17:30:53] <infornography> absolutely proprietary
[17:31:21] <infornography> stallman.jpg
[17:32:27] <gregcnc> anyone deal with IMS Gear? US offices don't bother to answer phones and email to Germany goes unanswered
[17:32:49] <cpresser> IMS?
[17:32:49] <infornography> I was able to play with pycam a little last night, but the generated code was always in metric. I will have to play with it some more.
[17:33:21] <Tom_L> it may depend on A) the units of your model or B) the way your post is defined
[17:39:46] <CaptHindsight> gregcnc: might not be "geared" toward dealing direct with not established customers
[17:41:01] <gregcnc> I don't know, they make it clear they will sell one piece on their site
[17:42:47] <srk> infornography: freecad 0.17 has nice CAM workbench
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[17:44:04] <infornography> freecad .17 is on my download list
[17:45:13] <gloops> infornography are you working on windows or linux?
[17:45:51] <infornography> linux
[17:46:41] <gloops> working with metal?
[17:47:52] <infornography> Nothing yet, but will be aluminum and plastic.
[17:49:56] <gloops> freecad is ok for part making, the problem comes with more artisitic stuff, blender has a CAM plugin which looks useful for that, but not used it yet
[17:51:03] <infornography> I loaded .16 out of the repo and played with it enough to make a cube and load it into pycam
[17:53:00] <infornography> Learning freecad, pycam, and linuxcnc all at once is going to be a bigger project than I initially thought.
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[17:54:20] <infornography> I still need to get the mill going too.
[17:54:38] <Tom_L> nothing like diving in head first
[17:55:56] <infornography> There wouldn't happen to be someone in here with a MaxNC 10 OL? I'm trying to find specs for the steppers
[17:56:13] <gloops> dont bother with pycam just learn freecad
[17:56:33] <infornography> Freecad can generate the gcode then?
[17:57:21] <Tom_L> i believe so
[17:58:57] <gloops> yeah, theyve been working on the CAM thing recently, i think it is pretty useable now
[17:59:12] <gloops> i dont think pycam has been worked on for a few years, might be wrong
[17:59:39] <infornography> I thought I had found the specs for the steppers, but the page doesn't load now that I need the info
[18:00:02] <gloops> also, not so many tutorials or much documentation for pycam
[18:00:04] <infornography> Yeah I think I read that pycam is pretty static now
[18:14:20] <_unreal_> Freaking hell
[18:14:28] <_unreal_> long ass day at work
[18:15:17] <_unreal_> Ok one more time slightly different crowd of people in here. any one think these are total crap or a rip off? https://www.amazon.com
[18:21:59] <Tom_L> the red board you could toss in the river but just my opinion
[18:22:17] <Tom_L> only USB cnc
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[18:22:21] <Tom_L> not realtime
[18:22:43] <_unreal_> redboard?
[18:23:18] <_unreal_> Oh that controller board
[18:23:26] <_unreal_> I'll prob use that controller board for my home cnc
[18:23:42] <Tom_L> i would want them to be the same personally
[18:23:49] <Tom_L> ymmv
[18:24:49] <_unreal_> ?
[18:24:57] <_unreal_> I dont know what ymmv means
[18:25:00] <Tom_L> your mileage may vary
[18:26:07] <Tom_L> i'd ask around about the drivers, i'm not familiar with them
[18:26:10] <Tom_L> the steppers look ok
[18:26:15] <_unreal_> me neather
[18:26:27] <Tom_L> like i said, i'd toss the red board
[18:26:41] <Tom_L> maybe salvage the connectors :)
[18:27:24] <Tom_L> it must be specific to one system
[18:27:30] <Tom_L> not mach3 or linuxcnc
[18:31:04] <_unreal_> Tom_L, its universal
[18:31:13] <_unreal_> its JUST an arduino
[18:31:18] <_unreal_> under the metal can
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[18:32:02] <Tom_L> if you wanna run grbl then ok
[18:32:07] <Tom_L> that's probably what it is
[18:41:08] <_unreal_> My things are simple.... its the best total kit package I've found so far
[18:41:15] <_unreal_> unless someone points me to something even better
[18:41:59] <Tom_L> you should ask ich, he's got the components figured out
[18:42:11] <Tom_L> as far as cost vs performance
[18:42:28] <Tom_L> he's in germany so you can figure when he may be here
[18:42:58] <Tom_L> gloops, what' that other nick he's been using?
[18:45:30] <Tom_L> or anybody for that matter...
[18:46:40] <jthornton> pcw_home: what is the max pwm frequency for the 7i96?
[18:48:06] <Tom_L> JT, looks like you're gettin wet today
[18:49:15] <_unreal_> hum
[19:10:13] <Rab> "This cnc kit only support USB CNC Software,not for Mach3 software"...if not Mach3, which software does it support?
[19:10:30] <jthornton> yea a line of thunder storms rolled through a while ago
[19:11:37] <Rab> I guess it comes with software.
[19:12:13] <Tom_L> sorta
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[19:17:30] <infornography> help!
[19:18:28] <infornography> I figured out the steppers on the maxnc 10 are:
[19:18:30] <infornography> http://www.mpja.com
[19:18:44] <infornography> rated at .18a @ 24v
[19:19:31] <infornography> the driver I have is :
[19:19:33] <infornography> https://hobbycnc.com
[19:20:15] <infornography> I don't think the pots will adjust down far enough to get to .18a ...
[19:21:27] <infornography> my math tells me this doesn't work, but I hope I am wrong.
[19:22:26] <infornography> The only other steppers I have nema34 and they do not fit :(
[19:22:33] <_unreal_> infornography, I could be worng but I think thats a typo
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[19:22:51] <_unreal_> thats a NEMA23 motor looks like a step syn
[19:22:54] <_unreal_> by sanyo
[19:23:02] <_unreal_> its prob 1.8a
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[19:23:21] <jdh> 50oz/in
[19:23:25] <_unreal_> not 0.18A.... a motor that size is NOT likely to only draw 180ma of power
[19:23:32] <_unreal_> YA 1.8a
[19:23:43] <infornography> https://www.ebay.com!74937!US!-1
[19:24:00] <infornography> the top of this one reads .18 too
[19:25:05] <infornography> I want to turn the driver down all the way and just run it and see what happens, but I need moral support
[19:25:34] <jdh> go for it.
[19:25:37] <_unreal_> OHHHHHH 24v
[19:26:14] <_unreal_> infornography, what voltage are you running?
[19:26:52] <infornography> I can run 12 now, or 24 later this week
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[19:27:08] <infornography> I have a 24v power supply on the way
[19:27:33] <_unreal_> ok then you should be fine.... its higher voltage rated meaning it has a higher internal resistance....
[19:27:43] <_unreal_> if the motor gets stupid hot then turn off the power
[19:27:57] <_unreal_> 0.18 at 50oz huh....
[19:28:26] <_unreal_> Thats kind of a shitty design........
[19:28:38] <_unreal_> I've seen much smaller motors hold that
[19:29:06] <infornography> If it was 4v it would be 1.08 amp yeah? I like to think anyway
[19:29:30] <_unreal_> just watch the heat. if it gets hot ether put a fan on it OR get a driver that can run low amperage.
[19:29:44] <Tom_L> chopper driver
[19:29:46] <_unreal_> infornography, I dont know depends on the number of windings. the guage of the wire
[19:29:51] <Tom_L> most drivers now are
[19:30:25] <infornography> yeah, I'm runnung a chopper
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[19:30:35] <_unreal_> infornography, so long story short... thats a lot of motor for very little holding tourque
[19:31:13] <infornography> Thats what is on there at the moment though
[19:31:13] <_unreal_> infornography, you could use like a 4ohm 50watt dropping ceramic resistor on the +v pin
[19:31:39] <_unreal_> if the motor gets hot
[19:31:48] <jthornton> say goodnight Gracie
[19:33:17] <_unreal_> I have some nema34 stepsyn motors that are 4.5v 1.4A and they hold 200oz
[19:33:29] <_unreal_> err 260oz
[19:36:27] <_unreal_> the cans are tiny though :)
[19:36:57] <_unreal_> I use to have 4 but they were the first motors I got..... and saddly being new to them I took a few apart. not knowing that would kill the magnet :(
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[19:37:26] <_unreal_> I had some REALLLY nice motors that I stupidly took apart like 15 years ago :(
[19:37:39] <_unreal_> oh well
[19:38:29] <_unreal_> Wasnt till after I took em apart and left them sitting on my desk that I came across a single blog post that stated "BTW OPENING MOTORS IS BAD".... I read more and cried
[19:39:49] <infornography> lol
[19:40:07] <infornography> now I too know
[19:41:02] <_unreal_> ? why have you taken some apart?
[19:41:47] <infornography> No, but I wouldn't have thought much about it until you said that.
[19:41:49] <_unreal_> even today...... :( I think I destroyed about $1k worth in motors just pulling them apart...... really big steppers to.....
[19:42:03] -!- gloops has quit [Ping timeout: 272 seconds]
[19:42:33] <_unreal_> I was doing some part time work for a guy pulling materials salave metals from BIG hardware
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[19:42:40] <_unreal_> really old printers etc......
[19:42:42] <_unreal_> :(
[19:43:00] <infornography> RIP motors
[19:43:04] <_unreal_> When Is say printer I mean 5'x5'x8'
[19:43:09] <_unreal_> IBM printers
[19:43:19] <_unreal_> dot matrix
[19:43:31] <_unreal_> just BIG
[19:43:55] <_unreal_> some of those steppers were like 6" diam
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[19:44:00] <_unreal_> round cans
[19:44:14] <_unreal_> just BIG
[19:46:13] <infornography> I gotta go do life stuff, thanks #linuxcnc
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[20:09:56] <_unreal_> There just ordered one of these https://www.ebay.com
[20:18:34] <CaptHindsight> *duino!
[20:18:49] <CaptHindsight> Rpi!
[20:21:11] <CaptHindsight> https://projects-raspberry.com
[20:26:37] <CaptHindsight> https://boundarydevices.com not low cost
[20:27:54] <CaptHindsight> at these prices you might as well stay with x86
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[21:49:34] <Roguish> check it out https://sfbay.craigslist.org
[21:50:57] <hazzy-lab> Roguish: is that yours?
[21:51:03] <hazzy-lab> looks nice
[21:51:13] <Roguish> no, just cruising Craigslist.
[21:51:25] <hazzy-lab> ok
[21:52:21] <hazzy-lab> looks like it is well put together, don't see many of those out there
[22:10:36] <skunkworks> http://electronicsam.com
[22:11:27] <skunkworks> http://electronicsam.com
[22:11:34] <Tom_L> is cast easier to machine than steel?
[22:12:35] <skunkworks> maybe easier.. but nastier. can still taste it
[22:12:45] <Tom_L> heh
[22:13:02] <skunkworks> try to run a vacuum a lot
[22:22:17] <_unreal_> I.MX lol thats funny... thats based on the CUBOX system
[22:23:44] <_unreal_> stinkworks what cha making?
[22:26:57] <skunkworks> _unreal_: a riser for a small cnc
[22:28:01] <skunkworks> http://electronicsam.com
[22:29:24] <skunkworks> http://electronicsam.com
[22:29:38] <_unreal_> nifty
[22:30:16] <_unreal_> skunkworks, did you cast that or are you rebuilding it?
[22:30:52] <Tom_L> it was a large scrap he had
[22:31:13] <_unreal_> ?
[22:31:23] <Tom_L> re'purposed iron
[22:31:28] <_unreal_> scrap to what. looks sand cast or baddly pitted from rust
[22:32:44] <skunkworks> it was a chunk of cast from an old grinder we had
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[22:33:18] <skunkworks> big enough (barely) for this project
[22:36:04] <skunkworks> http://electronicsam.com
[22:37:29] <_unreal_> flicing hell thats big what ever it is...
[22:42:16] <skunkworks> http://electronicsam.com
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