#emc | Logs for 2007-11-08

[00:00:28] <JymmmEMC> dmess: doens't even make it so you can read it, then he can't fax it back a second time, then I drive to our other facility and then the SOB faxes it back to the 2nd facility, then he calls like 18 times "is it done yet" 4 minutes after the request has come in. Then the....
[00:01:17] <dmess> oh wow... JymmmEMC:... that sounds like what we refer to as a Clusterf#ck
[00:01:46] <JymmmEMC> dmess: phone system messes up and had two calls come in at the exact same time, and of course both calls are like 30minutes each. Had another customer panic his servers are down and depanding to be let into his cbainets RIGHT NOW, hanging up the phones on all the other customers, etc.
[00:02:41] <JymmmEMC> dmess: So for a while... I was on three phone lines and had about 8 ppl standing in front of me all at the same time.
[00:02:48] <dmess> booom
[00:04:28] <JymmmEMC> dmess: Then last week, and a 1" pipe break in the bldg and there was about 500 gallons of water going fromt he 2nd floor bath room, thru the walls, ceilings to the first floor and the local shutoff valvles weren't working, and had to find the main shutoff for the 500,000 sg ft bldg. fun stuff.
[00:05:20] <dmess> they tag teamed me yesterday.... told first guy.. cant do it right now.. have other priorities.... came back with HIS boss not mine... SORRY still not on my radar.... 1 hour later.. 2 + my boss... walked in looked at my desk ..looked at the other 2 and sayed yup.. not on HIS radar.... and wont be... see ya
[00:05:53] <JymmmEMC> lol, gotta love it when your boss has your back
[00:06:47] <dmess> he does.. he used to sit in front of me.. he KNOWS what i can pull from the shits.
[00:06:54] <JymmmEMC> =)
[00:07:15] <dmess> impossible ....just means 1 more sleep needed.
[00:09:12] <JymmmEMC> dmess: just sleep when your dead =)
[00:10:00] <dmess> our core group of 10-12 ppl that RUN the machine shop are the ODDEST bunch of misfits.... but man can we make a 300 ppl machine shop rOCK
[00:10:35] <dmess> thats what my dad says.. work while ya can.. you can sleep when yur dead
[00:11:31] <JymmmEMC> gawd knows I try
[00:11:44] <dmess> but some of MY fixes you cant think of... they come from my twin bother in dreams.. he's the cnc machinst for heaven
[00:12:00] <JymmmEMC> rotf
[00:13:06] <dmess> uses EMC2 too.. he was impressed with the install of the ISO over the really WI-FI
[00:14:23] <dmess> he discribed the CPU as looking like a ball of snot
[00:14:39] <dmess> chip = cpu
[00:14:50] <eric_u> sounds like a couple of my computers
[00:16:57] <eric_u> some people that sell servo drives on ebay must rack up some amazing fees
[00:17:16] <eric_u> list something for $500 over and over and never sell it
[00:23:23] <dmess> JymmmEMC: dont you have drawings ... ??
[00:29:45] <JymmmEMC> dmess: of?
[00:30:06] <eric_u> the k2
[00:30:13] <JymmmEMC> no
[00:30:36] <eric_u> they look nicer than they used to look
[00:30:49] <eric_u> I take it that the table is optional?
[00:31:03] <JymmmEMC> y
[00:31:51] <eric_u> I'm looking at the guitar faq, a turnkey system requires 12 items
[00:32:27] <JymmmEMC> I use MDF anyway, because I have to go thru the material by .01" anyway to have a clean finish
[00:32:47] <eric_u> mdf is a good idea
[00:33:31] <eric_u> there is a quick tool change for porter cable?
[00:33:58] <JymmmEMC> If it's the same type as sears, it's a POS
[00:34:58] <JymmmEMC> You can see what I mean in this pic of the mdf... http://farm1.static.flickr.com/166/424362252_1bd7946026_b.jpg
[00:35:36] <eric_u> machinist at work uses aluminum for that, nice for the budget
[00:35:59] <JymmmEMC> Why use al when you KNOW you are going to ruin it anyway.
[00:36:15] <eric_u> he gets a big, thick piece and surfaces it occasionally
[00:36:24] <JymmmEMC> ah
[00:36:24] <eric_u> I paid for it, what does he care?
[00:36:38] <JymmmEMC> lol
[00:36:55] <eric_u> admittedly, I didn't know I was going to pay for it ahead of time
[00:37:19] <eric_u> too many people are aware of the size of our budget
[00:38:02] <JymmmEMC> When I replace the mdf top, I just run a proggy to drill the grid of 120+ holes
[00:38:02] <eric_u> that's nice
[00:38:08] <eric_u> you running a vacuum?
[00:39:09] <JymmmEMC> I have a shopvac the "plugs into" the dust chamber, and there's a hvac filter on the top to let in fresh air.
[00:39:22] <eric_u> i meant hold-down
[00:41:51] <eric_u> guess not :)
[00:41:51] <JymmmEMC> no, the hold down is in that pic
[00:41:51] <JymmmEMC> I do have a very nice vac pump already, just havne't made the table for that.
[00:41:52] <JymmmEMC> I use dowels pins as edges, then edge clamp using those triangluar blocks and clamps you see.
[00:41:52] <eric_u> not much to it
[00:41:52] <eric_u> need your mdf top and a plenum
[00:41:52] <JymmmEMC> oh except preventing mdf dust from getting in the vacpump, plumbing, etc
[00:41:52] <JymmmEMC> a reservior, etc
[00:41:58] <dmess> good bang for the buck if you have repeat jobs though... tapped holes remain after facing
[00:42:48] <eric_u> it was well worth it for the machinist, I think I could have done without it myself
[00:43:09] <dmess> any one used/seen the vacuum generators that us compressed air??
[00:43:22] <eric_u> we used them in the Air Force
[00:43:24] <JymmmEMC> eric_u: Like I said I do have a very nice $600 vac-pump I got for $50, just not ready for the rest yet.
[00:43:42] <JymmmEMC> dmess: venturi pumps?
[00:44:06] <eric_u> that's the only way I know to make a vacuum from compressed air
[00:44:17] <toastyde1th> it works better with water?
[00:44:25] <eric_u> really?
[00:44:27] <toastyde1th> yes
[00:44:36] <dmess> you AF eric_u:??? sorta venturi... but draws harder...
[00:44:45] <toastyde1th> you can pull a really good vacuum on a water aspirator
[00:44:59] <eric_u> I was AF for 11 years
[00:45:20] <toastyde1th> plus with water you can get a little water pump
[00:45:26] <toastyde1th> and there you go, homemade vacuum pump
[00:45:44] <eric_u> we used them for field repairs, they work pretty well
[00:46:45] <eric_u> how does the water entrain air?
[00:46:45] <toastyde1th> same way air entrains air - the bernoulli principle
[00:46:45] <toastyde1th> wider pipe narrows
[00:46:45] <eric_u> plus your $60 million airplane wouldn't like to get all wet
[00:46:45] <toastyde1th> in the narrow, the flow increases, so pressure must decrease
[00:47:13] <dmess> pipe o meter???
[00:48:05] <dmess> what were you flying??
[00:48:05] <eric_u> I am an engineer, flew a desk
[00:48:17] <dmess> onboard??
[00:48:24] <eric_u> no, in a building
[00:48:51] <dmess> what plane were you ENG on??
[00:49:01] <eric_u> F-16 mostly
[00:49:14] <dmess> c/d or e/f
[00:49:26] <eric_u> all of the above, also C-130, OV10, some others
[00:49:50] <eric_u> actually, block 50 came out just before I left
[00:50:27] <dmess> cool a good chum was a c-130 crew chief... block 50??
[00:50:54] <eric_u> f-16 e
[00:50:56] <dmess> 25 yrs retired - 3 tours..
[00:51:12] <dmess> I see...
[00:51:34] <dmess> thats an avionics package isnt it??
[00:51:40] <eric_u> redesign
[00:51:51] <dmess> i deal with l/g
[00:52:13] <dmess> on all
[00:52:26] <eric_u> are you in utah?
[00:52:52] <dmess> no.. why should i be... i WAnt A new job
[00:53:14] <eric_u> me too :)
[00:53:14] <skinnypuppy34> Is linuxcnc.org not loading ? Replies to ping request but no pages are loading for me.
[00:53:26] <dmess> or are refering to the 'G'
[00:53:39] <eric_u> thought you meant landing gear
[03:36:45] <Wowbagger_> Small crowd.
[03:37:11] <eric_u> everybody but the most important got bumped off, looks like a server went down
[03:37:19] <Wowbagger_> ah
[03:37:33] <Wowbagger_> I see... other channels are empty too.
[03:37:44] <Wowbagger_> Is open cam functional?
[03:38:02] <eric_u> is that the India SW?
[03:38:32] <Wowbagger_> india? no idea...
[03:38:43] <Wowbagger_> It's on the emc wiki.
[03:39:10] <Wowbagger_> It's a gambas (basic) program which claims to make gcode from various vector graphic formats.
[03:39:22] <eric_u> I don't hear about people using it
[03:39:30] <eric_u> but I'm no expert
[03:42:18] <Wowbagger_> 110 packages to install gambas. Guess I should do apt upgrade more often.
[03:45:08] <SWPadnos> hmmm. did the logger ever try to join your side of the netsplit?
[03:45:43] <eric_u> we were talking unlogged for a while
[03:46:01] <eric_u> toastyde1th admitted he shot you guys down
[03:46:03] <Wowbagger_> phew... all those terrible things I said...
[03:46:02] <SWPadnos> quite a while, I think
[03:46:12] <SWPadnos> no, those are recorded
[03:46:30] <user__> looks like it I was eating dinner... probably missed twingys reply if gtk 2.1 is avail for 6.06
[03:49:37] <user__> ???
[03:50:26] <user__> #ubuntu just lost like 1000 users
[03:53:43] <user_> user_ is now known as Skinnypuppy1334
[03:53:56] <steve_stallings> steve_stallings is now known as steves_logging
[04:01:21] <jlmjvm> Skinnypuppy1334:do you know how to use double step?
[04:01:53] <Skinnypuppy1334> jlmjvm: haven't in 2.2
[04:02:58] <jlmjvm> k,was trying to find it
[04:03:14] <jlmjvm> thought maybe you were using it
[04:08:32] <LawrenceG> <skunkworks> here I mean http://axis.unpythonic.net/01188134101
[04:08:32] <LawrenceG> <jepler> to use doublestep, the modifications to the ini/hal file are roughly:
[04:08:32] <LawrenceG> make BASE_PERIOD larger than max jitter + datasheet steplen + datasheet stepspace + a few more ns.
[04:08:32] <LawrenceG> setp parport.0.reset-time to the datasheet steplen in nanoseconds.
[04:08:32] <LawrenceG> for each stepgen, add or change these parameter settings:
[04:08:33] <LawrenceG> 'setp stepgen.N.stepspace 0' 'step stepgen.N.steplen 1'.
[04:08:35] <LawrenceG> For each pin MM which is a STEP signal, add: 'step parport.0.pin-MM-out-reset 1'
[04:10:06] <LawrenceG> jlmjvm: hope that helps.... was talked about earlier today
[04:34:51] <SWPadnos> Twingy, do you actually have some of the AVR32 UC3 chips coming in?
[04:35:00] <Twingy> yes
[04:35:10] <Twingy> just some samples
[04:35:14] <SWPadnos> where did you get them? (Avnet?)
[04:35:14] <SWPadnos> ah
[04:35:24] <SWPadnos> I haven't seen them in the online stores
[04:35:39] <SWPadnos> didn't check Avnet yet
[04:42:25] <Skinnypuppy1334> Twingy: I may have missed your response or you may have missed my question. Is that gtk version available for 6.06 ?
[04:43:16] <SWPadnos> hey man, find out for yourself ;)
[04:43:37] <SWPadnos> http://packages.ubuntu.com/
[04:43:44] <Twingy> haven't checked
[04:53:05] <Skinnypuppy1334> Thanks for the link. I wasn't trying to nag... just didn't see it in synaptic
[05:03:01] <SWPadnos_> SWPadnos_ is now known as SWPadnos
[05:11:39] <SWPadnos_> SWPadnos_ is now known as SWPadnos
[09:09:58] <anonimas1> anonimas1 is now known as anonimasu
[13:13:35] <jepler> good morning
[13:14:56] <SWPadnos> oh - hi :)
[13:15:03] <awallin> hi
[13:15:28] <SWPadnos> did everyone else have all the connection problems last night?
[13:24:48] <jepler> SWPadnos: seemed that way
[13:25:28] <SWPadnos> ok - good to know it wasn't on my end again
[13:26:32] <jepler> I got some splits and some disconnects
[14:12:17] <alex_joni> jepler: I had serious connection issues (but between user <-> PC)
[14:13:39] <jepler> hee hee
[15:41:39] <alSMT> i'm getting a joint error from a manual jog move but not mdi g0 z-1.
[15:53:10] <alSMT> got it, stepgen max accell lower than max accell
[15:55:00] <skunkworks> Good job :)
[15:57:11] <alSMT> using double step from jepler and my DIR_HOLD param doesn't seem to take affect
[15:58:52] <alSMT> how can I be sure I wont vialate the 20us hold min of the gecko drive?
[15:59:10] <SWPadnos> how are you measuring whether the dir hold is being effective?
[15:59:30] <cradek> alSMT: http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?UPDATING#stepgen_and_freqgen_changes
[15:59:38] <alSMT> hal show param stepgen dirhold
[16:00:23] <alSMT> i'm using 30000ns
[16:01:11] <jepler> so you mean that halcmd 'show param stepgen*dirhold' doesn't show the value you expected?
[16:01:35] <jepler> can you show me the actual output, and then tell me what output you expected?
[16:02:28] <alSMT> it stay's the same as steplen
[16:02:42] <SWPadnos> what is your baase_period?
[16:02:45] <SWPadnos> base
[16:03:02] <alSMT> is the value hexidecmal?
[16:03:10] <SWPadnos> shouldn't be
[16:03:16] <jepler> yes, I think it is printed in hex
[16:03:20] <SWPadnos> but it is rounded up to the nearest multiple of the base_period
[16:03:30] <alSMT> base period 40000
[16:03:46] <alSMT> I think so
[16:04:55] <SWPadnos> ? you think so what? :)
[16:05:20] <alSMT> before the double step change I could see the changes in DIR_HOLD
[16:05:37] <SWPadnos> I don't think that's a feature of double step
[16:05:40] <alSMT> round base period
[16:06:02] <SWPadnos> the stepgen in CVS has been using nanoseconds and rounding to the next period for a long time
[16:06:09] <SWPadnos> it just happens that you got both changes in one go
[16:06:13] <jepler> can you show me the actual output, and then tell me what output you expected?
[16:06:29] <jepler> (from 'halcmd show')
[16:06:35] <alSMT> ok
[16:07:43] <alSMT> I cant copy and paste from there can I
[16:08:09] <SWPadnos> you can open a terminal
[16:08:17] <alSMT> ok
[16:08:20] <SWPadnos> and type `halcmd show param stepgen.0`
[16:10:56] <alSMT> Parameters:
[16:10:57] <alSMT> Owner Type Dir Value Name
[16:10:57] <alSMT> 4 u32 RW 000099DF stepgen.0.dirhold
[16:10:57] <alSMT> 4 u32 RW 000099DF stepgen.0.dirsetup
[16:10:57] <alSMT> 4 float RO 0 stepgen.0.frequency
[16:10:57] <alSMT> 4 float RW 5 stepgen.0.maxaccel
[16:10:59] <alSMT> 4 float RW 1 stepgen.0.maxvel
[16:11:01] <alSMT> 4 float RW 25000 stepgen.0.position-scale
[16:11:03] <alSMT> 4 s32 RO 0 stepgen.0.rawcounts
[16:11:05] <alSMT> 4 u32 RW 000099DF stepgen.0.steplen
[16:11:07] <alSMT> 4 u32 RW 00000000 stepgen.0.stepspace
[16:11:42] <SWPadnos> ok, steplen, dirhold, and dirsetup have all been rounded up to one period
[16:11:52] <jepler> what value did you expect for stepgen.0.dirhold?
[16:12:02] <SWPadnos> that's 39391, which is probably what your requested 40000 base period ended up being
[16:12:51] <fenn> maxaccel and maxvel look small?
[16:13:16] <alSMT> I'm looking at a latancy 20000 24000
[16:14:13] <fenn> maxvel=1 is 25000 steps/sec right?
[16:14:16] <alSMT> fenn: 40000 base 25000 input scale
[16:14:39] <fenn> ok nevermind then
[16:14:58] <jepler> alSMT: what value did you expect for stepgen.0.dirhold?
[16:15:32] <alSMT> if use the 24000+20000us hold min 44000 base
[16:16:29] <alSMT> my Question do I need a to hold for two periods?
[16:16:42] <jepler> so the value you expected was 44000 or above, not 39391 (000099DF hex)?
[16:16:51] <alSMT> no
[16:20:26] <SWPadnos> uh - so what is the question?
[16:21:48] <alSMT> 40000 verses 44000 not much diff in base
[16:22:10] <SWPadnos> you do not need to change your base period to adjust step generation parameters
[16:22:27] <SWPadnos> that's why they're in nanoseconds now, instead of a count of periods
[16:22:51] <SWPadnos> have you read this? http://www.linuxcnc.org/docs/html/man/man9/stepgen.9.html
[16:23:03] <alSMT> no
[16:23:13] <SWPadnos> check it out, particularly the TIMING section
[16:23:21] <SWPadnos> http://www.linuxcnc.org/docs/html/man/man9/stepgen.9.html#TIMING
[16:23:31] <alSMT> i'm gone
[16:23:35] <SWPadnos> heh
[16:23:37] <SWPadnos> see you later
[16:23:43] <alSMT> ok
[16:25:07] <alSMT> how do you guy come up with these links so fast
[16:26:50] <jepler> many of them we use over and over again
[16:27:55] <alSMT> you guy need a emc for dummies book
[16:28:01] <SWPadnos> (tm)
[17:35:45] <alSMT> i'm sorry guys but the steplen timeing link shows steplen stepspace steplen dirhold dirsetup, does this mean that the dirhold for one period then dir setup runs for one period?
[17:41:50] <jepler> "dirhold" controls the length of time between the trailing edge of a step pulse and the change in the direction signal
[17:42:09] <jepler> "dirsetup" controls the length of time from the change in the direction signal and the leading edge of the following step pulse
[17:43:09] <jepler> each one is at least one BASE_PERIOD long, but can be longer depending on what the parameter is set to -- e.g., if you set it to 100000 and your BASE_PERIOD is 30000 then it will be 4 BASE_PERIODs long
[17:43:46] <jepler> you set the value you desire using 'setp' in a .hal file
[17:48:02] <alSMT> if i use my latancy+20us hold time 44000 i shouldn't vialate 1usdir setup(20us hold time after step edge "gecko data"
[17:50:08] <jepler> with 24000 latency and 20000 datasheet direction hold time, you would want 20000+24000 = 44000 hal dirhold
[17:50:52] <jepler> if your BASE_PERIOD is 40000, then you will get two BASE_PERIODs of hold time, because 44000 > 40000, but 44000 <= 80000.
[17:52:45] <alSMT> 35000 base with 44000 hold still two periods correct
[17:53:18] <alSMT> thanks time to make some chips and see whats happens
[17:54:46] <jepler> If your base period is 35000, then you will get two BASE_PERIODs of hold time, because 44000 > 35000, but 4400 <= 70000.
[17:54:50] <jepler> If your base period is 35000, then you will get two BASE_PERIODs of hold time, because 44000 > 35000, but 44000 <= 70000.
[17:58:05] <alSMT> thanks
[18:46:55] <JymmmEMC> SWPadnos: I just can't think of a material I could bold to the heater that they can't climb on
[18:46:55] <JymmmEMC> bolt
[18:46:57] <SWPadnos> there probably isn't one, other than highly polished flat steel or something
[18:47:05] <SWPadnos> but anything they can't climb on also won't let any heat out
[19:15:05] <fenn> that wasnt a normal netsplit
[22:32:45] <jlmjvm> LawrenceG:thanks for the info last nite,was away from computer,gonna try it this afternoon
[22:54:53] <eric__u> anyone ever report EMC locking up and having their servo go crazy?
[22:55:03] <eric__u> I don't remember any cases like that
[22:55:07] <SWPadnos> no, are you the first?
[22:55:17] <eric__u> no
[22:55:31] <eric__u> the question came up on cnczone
[22:55:49] <SWPadnos> actually, there have been reports of the PC locking up, but the RT portion of EMC continuing to run the G-code correctly
[22:56:06] <eric__u> that happened at the fest I went to
[22:56:24] <eric__u> JMK was running a demo with an encoder and a stepper
[22:56:25] <SWPadnos> I have personally observed that a PC with the kernel oopsed (couldn't even ping it) still ha dRT threads running (and with better timing too)
[22:56:44] <SWPadnos> ... had RT ...
[22:56:52] <eric__u> that's cool
[22:57:07] <eric__u> I suppose if you were really worried, a watchdog would be a good thing
[22:57:15] <SWPadnos> yep. it was so good that I could see the 33MHz PCI clock on the scope
[22:57:22] <SWPadnos> (this was outputting to a Mesa card)
[22:57:31] <eric__u> nice
[22:58:01] <SWPadnos> I got a bunch of vertical lines spread over maybe 2 microseconds, at exact 33 or 34 ns increments
[22:58:06] <eric__u> some commercial iron must have watchdog
[22:58:28] <SWPadnos> maybe, maybe not. a lot of commercial iron probably has good limit switches
[22:58:31] <SWPadnos> :)
[22:58:34] <jlmjvm> is there a fest coming up anytime soon
[22:58:37] <eric__u> next spring
[22:58:37] <SWPadnos> nex tyear
[22:58:51] <SWPadnos> sometime in May or thereabouts, probably
[22:59:03] <eric__u> a lot of commercial iron gets killed in crashes
[22:59:07] <jlmjvm> gonna try to attend the next 1
[22:59:21] <eric__u> someone recently asked me to do a failure analysis
[22:59:47] <eric__u> it was on a giant G&L cnc that ended up in pieces on the floor
[22:59:53] <eric__u> it was like a bomb went off
[23:00:06] <eric__u> I declined to participate
[23:00:13] <SWPadnos> I guess they didn't have a watchdog ;)
[23:00:21] <eric__u> nobody knows what really happened
[23:00:37] <SWPadnos> maybe a bomb went off
[23:00:50] <eric__u> they think the workpiece got loose
[23:01:07] <SWPadnos> you know, using kerosene or gasoline as cutting fluid, then a spark or trying to cut steel at 1000 SFM
[23:01:31] <eric__u> they wanted me to analyze if that would have been sufficient to break the base of the machine
[23:02:31] <eric__u> I know almost nothing about cast iron, or I would have done it
[23:02:55] <eric__u> taking money from lawyers just seems like a good thing to do for everyone's sake
[23:05:47] <SWPadnos> actually, I think it was less than 1 microsecond. I think I counted 22 or 23 lines, which would have been around 600-700 ns
[23:05:58] <SWPadnos> that's not bad for total latency variation
[23:06:41] <eric__u> I thought the latency would still be 10 microseconds or so
[23:06:42] <JymmmEMC> yo
[23:07:14] <SWPadnos> not with the kernel crashed ;)
[23:07:16] <SWPadnos> much less going on then
[23:17:26] <eric__u> I'm thinking about getting one of the Pmmnio l297/l298 drives
[23:17:28] <eric__u> either that or a Hobbycnc 3 axis drive
[23:17:32] <eric__u> there must be some people that have used those drives around here?
[23:17:50] <eric__u> ddlkfjdljfsd
[23:17:52] <eric__u> somebody at freenode keeps kicking the server
[23:18:20] <SWPadnos> they had a wallops message earlier about some script kiddie who keeps DOSing their servers
[23:18:52] <eric__u> nice
[23:19:07] <SWPadnos> LoRez*[Global Notice] I apologize for the trip through splitsville the past couple of days. Apparently we've annoyed a kiddie and he doesn't have anything better to do than packet a few of our servers. We're working with our sponsors to block the traffic.
[23:19:16] <eric__u> my daughter had off from school today because that guy also called in a bomb threat
[23:19:22] <SWPadnos> lovel
[23:19:26] <SWPadnos> lovely
[23:20:30] <eric__u> they have some sort of system (411?) that calls everyone on a list to notify of such things, three phones started ringing simultaneously
[23:20:42] <SWPadnos> I think 411 is information
[23:20:46] <SWPadnos> but anyway
[23:20:58] <eric__u> the number is 411 000 0000
[23:21:06] <SWPadnos> oh, interesting
[23:21:25] <eric__u> I also got two voicemail messages without a call
[23:21:33] <eric__u> one in spanish, and one in english
[23:21:53] <SWPadnos> "Para Espanol, imprima dos"
[23:23:33] <eric__u> so what is the cheapest usable step/dir stepper drive for a 2 amp motor?
[23:25:42] <SWPadnos> transistors and a cheap microcontroller would be the cheapest
[23:25:54] <SWPadnos> as for the best for your application, that's up to you
[23:26:28] <eric__u> I forgot that "I don't have to design" is a fundamental part of "usable"
[23:27:02] <eric__u> because I have projects that I started in 1985 that I still expect to get around to sometime
[23:32:07] <eric__u> I was really close to going step/direction with my bridgeport yesterday, and then I found a couple of 50 pin twisted pair ribbon cables that should help me with my Mesa wiring problems
[23:40:52] <dmess> hi all