#linuxcnc | Logs for 2016-05-28

[02:30:27] <Deejay> moin
[08:08:28] <pink_vampire> hi
[10:20:48] <maxcnc> hi
[10:20:59] <maxcnc> its bad weather here in Germany south
[10:21:18] <maxcnc> oh i see today no posts for hours
[10:22:03] <maxcnc> PCW ass systems are ok today with 5i25 7i76
[10:22:14] <maxcnc> but no hypertherm on it
[11:14:05] <maxcnc> im off Bye
[14:41:40] <jdh> idle?
[14:48:21] <Tom_itx> no
[14:48:24] <Tom_itx> haulted
[14:49:06] <JT-Shop> got my 328's today
[14:50:23] <Tom_itx> git em wired up then
[14:50:39] <Tom_itx> you don't need a crystal to play with em
[14:50:54] <Tom_itx> they'll run at 1Mhz or 8Mhz on the internal oscillator
[14:51:01] <Tom_itx> 1Mhz by default
[14:51:13] <JT-Shop> plenty fast for my application
[14:51:19] <Tom_itx> yep
[14:51:31] <Tom_itx> so it will simplify wiring
[14:52:19] <JT-Shop> been reading up a bit on avrdude and found a lib to run the ssd1306 oled
[14:52:29] <Tom_itx> good
[14:52:36] <Tom_itx> those commands on my site should work
[14:52:43] <JT-Shop> I've managed to get a working example on my ardweeie
[14:52:44] <Tom_itx> i can dig up some here locally if not
[14:53:57] <JT-Shop> https://github.com/tibounise/SSD1306-AVR
[14:54:49] <JT-Shop> so to keep my mind a bit straight, you build the project with make and then upload what to the chip?
[14:54:58] <Tom_itx> yes
[14:55:03] <Tom_itx> you'll end up with a .hex file
[14:55:07] <Tom_itx> iirc
[14:55:20] <JT-Shop> ah ok that makes sense
[14:55:39] <Tom_itx> http://tom-itx.no-ip.biz:81/~webpage/avr/atmega328/INT0/
[14:55:44] <JT-Shop> I'll go for a blink first to get the steps right
[14:55:48] <Tom_itx> that's the basic set of files you'll have
[14:56:00] <JT-Shop> ok
[14:56:09] <Tom_itx> my examples should load on it ok with no further mods
[14:56:15] <Tom_itx> since it's 168 328
[14:56:53] <Tom_itx> you may need to make a dummy .h file for the compiler
[14:57:00] <Tom_itx> they sometimes require that
[14:57:03] <Tom_itx> bb iab
[14:57:37] <JT-Shop> ok
[14:57:41] <Tom_itx> i got some code i gotta translate
[14:57:44] <Tom_itx> from spanish
[14:57:51] <Tom_itx> something i wanna use though
[14:58:16] <Tom_itx> at least it's not 100k lines of code
[14:58:41] <Tom_itx> brb...
[16:11:44] <Nick001-shop> Anyone around who knows how to hookup an AMC 25A20 driver?
[16:17:05] <Deejay> gn8
[16:20:48] <witnit> Nick001-shop: depends on how you are controlling it
[16:21:04] <witnit> what is your build like?
[16:22:00] <witnit> Nick001-shop: what controller cards are you using and what kind of feedback device is on your motors?
[16:29:43] <witnit> Also, do you already have your high voltage side of the drive finished or you need that too?
[16:30:53] <Nick001-shop> Using 7i77 current mode with encoder feedback. Had it working with a 10A8 but the 25a20 comes on with red fault light
[16:31:24] <Nick001-shop> Using 48v power supply for testing
[16:31:51] <Nick001-shop> for the 25A20
[16:31:58] <witnit> are you using all three of the inhibit switches?
[16:32:14] <witnit> amc uses one for amp, clockwise, counterclockwise
[16:32:39] <Nick001-shop> no inhibits - movement ok for testing
[16:32:55] <witnit> when does it turn red then?>
[16:33:58] <Nick001-shop> as soon as I turn the power on - pin 2 and 4 are hooked up to the 7i77
[16:35:07] <Nick001-shop> pin 2 is sig gnd and pin 4 is sig+
[16:35:56] <witnit> what happens to the drive when you connect pins 11,12,13 together with pin 2 on the drive?
[16:38:27] <Nick001-shop> I haven't tried it - says leave open to enable drive
[16:39:56] <witnit> I wonder if they are inverted
[16:40:10] <witnit> or need 5v to enable ampo
[16:40:53] <witnit> yeah, maybe from factory they had it inverted and you just put 5v to enable
[16:41:15] <witnit> sometimes there is a jumper or switch on the amc to invert it, but I dont recall if those do
[16:42:18] <Nick001-shop> pin 5 ref- isn't connect to anything - worked for the 10A8
[16:44:07] <witnit> you shouldnt need those connected to pull a green light
[16:45:20] <witnit> is there any revisions or extra stuff after the 25A20 model #?
[16:46:17] <Nick001-shop> I'm sure I'm missing someting - Model # 25a20T-LF3
[16:49:35] <Nick001-shop> That's on the 2 that I've tried - I have a 3rd LF3 and 1 that's LF2
[16:50:03] <witnit> I would disconnect everything but the HV and then connect your 11 to pin 1
[16:50:34] <witnit> it may just be inverted
[16:50:53] <Nick001-shop> pin 1 is +10v out
[16:51:07] <witnit> no 5?
[16:51:31] <witnit> sorry
[16:51:36] <witnit> thought those were 5 v out
[16:51:55] <Nick001-shop> pin 5 is -ref in and not connected
[16:51:57] <witnit> I should probably see your man
[16:52:25] <Nick001-shop> Its the one fron the AMC site
[16:52:39] <witnit> TTL level (+5 V) inhibit/enable input. Leave open to enable drive. Pull to ground to inhibit
[16:52:56] <witnit> so its doing 5v, and wants a ground
[16:53:11] <Nick001-shop> thats for pin 11
[16:53:15] <witnit> try just putting it to pin 2 and see if you get green light
[16:53:26] <witnit> yeh connect your inhibit to pin 2
[16:53:30] <witnit> 11-2
[16:53:37] <witnit> and see if it pulls a green light
[16:54:24] <witnit> many drives there is a switch to invert this
[16:54:35] <Nick001-shop> ok - be back I'll set up a small breadbord to connect them up
[16:54:59] <Nick001-shop> haven't seen info on a switch
[16:55:48] <witnit> http://i.stack.imgur.com/sZA09.jpg
[16:56:07] <witnit> one of those with the lil plug on each end of the wire is handy to have around
[16:56:42] <witnit> not all drives had them, all it does it invert your inhibit from normally open to normally closed
[16:56:54] <witnit> or there was a jumper behind the cover you had to move
[16:57:06] <witnit> yours doesnt appear to have an option at all
[16:59:12] <witnit> it seems strange you cannot pull a green light if you are giving it the minimum power req, and your motor is fine. I have a couple drives that dont even have the potentiometers, they were factory set and you had to replace various resistors and whatnot just to tune it :)
[17:06:21] <Nick001-shop> It has a green light now but the motor is free to turn by hand. hitting + and - direction wont move it either. I think its in inhibit mode because it's to ground.
[17:06:38] <witnit> wait, you mean its green now
[17:07:03] <witnit> but bumping +v on reference +/- doesnt make it move?
[17:07:10] <JT-Shop> use a 1.5v battery to test the drive with the motor disconnected from the axis
[17:07:18] <witnit> ^
[17:07:25] <witnit> works
[17:08:06] <JT-Shop> been planting just stepped back in
[17:08:44] <witnit> +/- DIRECTION are also inhibitors, you very possibly have to connect pins 11,12,13 together with pin 2 then connect your REF+ with some signal volts
[17:08:55] <witnit> nice, what are you growing this year?
[17:09:02] <Nick001-shop> goes to red if I pull the pin 11 wier to open it as per the man
[17:09:21] <witnit> yeah, its just inverted
[17:09:30] <JT-Shop> tomatoes, peppers, pickles, onions, garlic
[17:09:57] <Nick001-shop> how do I uninvert it?
[17:10:13] <witnit> use amp enable on the card
[17:10:27] <witnit> and probably just invert it via halfile
[17:10:52] <witnit> its not exactly safe to just leave a jumper hooked up
[17:10:58] <Nick001-shop> The battery was the first thing I tried. Hooked it up the same as the 10A8
[17:11:22] <Roguish> JT- Shop: a little late to plant isn't it? i have tomatoes, belll peppers and squash on the plants already.
[17:11:49] <witnit> yes but if your inhibit is inverted, there is a good possibility so is the clockwise and counterclockwise inhibits
[17:12:06] <witnit> which means you need all three grounded before you can add your ref+ voltages
[17:12:52] <Nick001-shop> I will do that now - bee back - 50ft trip to the bench
[17:12:57] <witnit> hgahahaha
[17:20:28] <Nick001-shop> Got motor movement - rough but tuning is from the 10A8. Is it ok to leave them all hooked up or should I be doing something different? These 25A20's are going into the Hardinge's
[17:28:57] <witnit> you should be using the amp enable option with your 7i77
[17:31:25] <witnit> page 15 www.mesanet.com/pdf/parallel/7i77man.pdf
[17:33:54] <witnit> when you tell linux cnc to stop working it will disable your amps via your inhibit loop you made on pins 11,12,13
[17:34:33] <witnit> this way when you shut things down the amps do not randomly wander and track among other things
[17:34:45] <witnit> motors^*
[17:38:28] <Nick001-shop> could you point me in the right direction for "amp enable option with your 7i77""
[17:40:25] <andypugh> Google 7i77man ?
[17:40:46] <Frank_1> andy do u have any spare combo :D 5i25+7i76?
[17:42:04] <andypugh> I have a 6i25 / 7i76 combo, but it’s a development sample from Mesa, so doesn’t feel like mine to sell.
[17:42:37] <witnit> the link is above
[17:42:38] <andypugh> Also, It’s in the UK, and I don’t think you are.
[17:42:59] <Frank_1> hehe its fine, i have some family there for holidays
[17:44:20] <Frank_1> the difference with the 5i25 its the pcie port'0
[17:44:22] <Frank_1> ?
[17:44:28] <Nick001-shop> <witnit> Thanks for the help & info. Dinnertime out with the family & visters
[17:44:38] <Frank_1> and i/o quantity looks like
[17:44:42] <andypugh> I am curious. Why, of all the places in the world that one might go on holiday, did they choose to visit the UK?
[17:45:15] <Frank_1> hahaha
[17:45:24] <andypugh> Frank_1: 5i25 and 6i25 are identical (even use the same firmware) except for PCI / PCIe
[17:45:46] <Frank_1> historical buildings (?) bites me
[17:45:56] <Frank_1> where would you ho
[17:45:57] <Frank_1> go
[17:46:16] <DaViruz> racing! i've been there to watch F1, and i'm thinking of going for a btcc race this summer
[17:46:21] <andypugh> If I was Argentinian, I think I would visit Spain.
[17:46:31] <Frank_1> that memory of yours
[17:46:51] <andypugh> They have historical buildings going back rather further than us, and a shared history woth Argentina.
[17:47:40] <andypugh> DaViruz: You should go to the Isle of Man, next weekend.
[17:47:46] <Frank_1> i wouldnt mind the uk to know it, but i prefer the beach, or spend the money on machines :D
[17:47:57] <DaViruz> andypugh: that's not a bad idea actually
[17:48:58] <andypugh> I really like the Isle of Man. I have not actually been there for the TT, but I have been at other times as a friend lives there, and my ex-girlfriend was brought up there.
[17:49:00] <DaViruz> i was supposed to take the test for my motorcycle licence this thursday
[17:49:07] <DaViruz> but the examinator cancelled it
[17:49:08] <DaViruz> the bastard
[17:49:41] <andypugh> Ah, that’s a shame. Otherwise you could have celebrated the test pass with a nice loing ride to the IoM
[17:50:16] <andypugh> Frank_1: I am far more interested in old buildings than beaches.
[17:50:25] <DaViruz> he said he'd reschedule it for today, but he dident
[17:50:34] <DaViruz> he rescheduled it for june 11 :(
[17:50:54] <andypugh> And the Alhambra, in Granada, Spain is possibly the most beautiful old building in the world,
[17:52:16] <andypugh> Frank_1: Anyway, where are they? Perhaps I can suggest something interesting to visit?
[17:52:35] <Frank_1> actually, now that i think about it they are heading to paris
[17:52:51] <andypugh> That’s not, actually, in the UK, you know.
[17:52:57] <Frank_1> thanks for the gesture thou!
[17:53:28] <Sync> andypugh: thinking about going to the iom tt next year
[17:53:49] <Sync> (they should do a 24h iom race :D)
[17:53:57] <andypugh> I think that the ManxGP might be better for civilised folk.
[17:54:46] <andypugh> From what I can gather, the TT is a bit full-on with “biker types” whereas the GP attracts a more sober and mature clientelle :-)
[17:55:17] <Tom_itx> which do you fall in?
[17:55:19] <DaViruz> i doubt i'll ever grow up
[17:55:21] <andypugh> You still see lots of pretty young girls in the traditional dress of mini-skirt and race-spec bike boots.
[17:56:17] <Sync> both is fine andypugh
[17:56:35] <Sync> as I currently watch the n24h
[18:01:09] <andypugh> Sync: The mountain circuit at night would be potentially horrible, you could crash and they might not find you till dawn.
[18:02:10] <Sync> they would need more marshalling posts, indeed
[18:02:43] <andypugh> They already struggle to get enough marshalls. If you fnacy the job, I can tell you who to talk to.
[18:03:03] <Sync> wat?
[18:03:13] <Sync> they struggle to get enough marshalls? how is that happening
[18:03:27] <andypugh> it’s a 37 mile course....
[18:04:27] <andypugh> Well, I don’t know if they actually “struggle” but a few of my friends do it and have never said “I couldn’t get a slot this year”
[18:05:00] <Sync> well eh, the nürburgring has 16miles and they have at least 2 marshalls at each station, for 32h straight this weekend
[18:05:08] <Sync> and each station sees the next one
[18:06:40] <JT-Mobile> Racing of some sort?
[18:06:41] <andypugh> Clearly too late for this year, but: http://www.iomttma.com
[18:07:58] <Frank_1> guys do you use ac line filters for noise control?
[18:08:10] <andypugh> JT-Mobile: https://www.youtube.com/watch?v=iRWp9rhfS_0
[18:09:14] <andypugh> 37 miles on public roads through towns and villages. Lap record 131 mph.
[18:10:46] <andypugh> Well, it’s a 37 mile lap, they do 3 or 4 laps
[18:11:00] <Sync> but yeah, I guess it would be too much of an organization hassle
[18:12:39] <JT-Mobile> Wow
[18:13:17] <JT-Mobile> Frank for a vfd?
[18:13:51] * JT-Mobile goes back to King Crimson
[18:14:42] <witnit> is there a new favorite (rather small) motherboard people like using with builds these days?
[18:15:21] <Frank_1> for the servo drives,
[18:15:32] <JT-Mobile> I have one that is real good. Do you need serial port?
[18:15:40] <Frank_1> but a vfd should use?
[18:16:21] <witnit> wait, who?
[18:16:21] <witnit> hahah
[18:16:24] <JT-Mobile> Frank only if you have problems
[18:16:59] * SpeedEvil wishes there was x86 with nice GPIO cheap
[18:17:01] <witnit> I use the lpp mostly so if it has that, it would be best
[18:17:04] <Frank_1> okkk!
[18:17:34] <JT-Mobile> Witnit do you need a serial port for modbus
[18:17:34] <witnit> lpt, in epp mode :)
[18:17:37] <witnit> no
[18:18:50] <Frank_1> i hope one day i finish my router T_T; should've built a cnc plasma, easier to fabricate
[18:19:12] <JT-Mobile> Let me lube the chicken and I'll get the part number
[18:19:24] <witnit> hooray! wait what
[18:19:25] <witnit> hahah
[18:23:32] <JT-Mobile> Gigabyte J1900N-D3V
[18:24:19] <JT-Mobile> Gigabyte H81M-S2H GSM
[18:24:47] <witnit> thank you :)
[18:26:49] <JT-Mobile> Yw
[18:27:34] <JT-Mobile> Orange soda hot chicken wings
[19:24:33] <andypugh> This is rather hypnotic: https://youtu.be/HCF2tQhceTM
[19:29:55] <JT-Mobile> Cool
[19:35:39] <witnit> here you go https://youtu.be/oGaKLuljDf4?t=273
[19:37:20] <_methods> spring pr0n
[19:38:27] <witnit> hnnnngh
[19:40:24] <Sync> I wonder how you program that stuff
[19:40:54] <andypugh> G-code X A C
[19:41:12] <andypugh> (at a guess)
[19:41:42] <witnit> its not bad, this guy was showing me, its mostly about having the right tips and knowing what kinds of arcs and curves the produce at each degree and such
[19:42:16] <witnit> he had it zip out 6 or 7 different springs without changing tooling
[19:46:18] <Valen> hey andypugh found the problem with the guys video who couldn't move -ve X and Y, missing a ground or something from their opto ;->
[19:46:34] <Valen> 2 axies -ve at the same time was enough to stop it from working
[19:46:34] <andypugh> Wierd.
[19:57:24] <andypugh> This is a nicely-done explanation: https://www.youtube.com/watch?v=r6Rp-uo6HmI
[20:07:08] <Sync> I'm all for uncompressed frames
[20:07:13] <Sync> and global shutter cameras
[20:09:13] <andypugh> My Holbrook is now a lathe again :-) https://www.youtube.com/watch?v=woU927Tqoo8
[20:13:23] <Sync> the spindel accel is pretty nice
[20:14:52] <andypugh> Wait till you se it stop :-)
[20:17:10] <Sync> that is what I meant
[20:17:16] <Sync> the start is not amazing
[20:18:17] <andypugh> Start is still default VFD params. But when you stop the spindle it disengages the motor and engages a brake.
[20:20:06] <Sync> ah, boring then
[20:21:46] <andypugh> Talking about boring, I accidentally bought yet another boring head :-)
[20:22:12] <Sync> :)
[20:22:16] <andypugh> A Tree boring head. Interesting device.
[20:24:05] <Sync> oh wot
[20:25:23] <andypugh> It’s like a boring head with a compund slide, it can bore, face, or feed at any angle in-between
[20:26:27] <Sync> yeah
[20:26:33] <Sync> I want one :D
[20:27:00] <andypugh> How much would you like to pay me for the one I just bought? :-)
[20:28:38] <XXCoder> home again yay heh
[20:28:48] <XXCoder> short road trip to bring 1969 ford home
[20:28:53] <witnit> :)
[20:28:56] <XXCoder> aka 125 miles :P
[20:29:00] <Sync> oh holy fuck
[20:29:05] <XXCoder> my bro is so glad it has cc
[20:29:06] <Sync> that thing looks dangerous
[20:29:51] <andypugh> What, theboring head? Not really.
[20:30:00] <XXCoder> I may be ignornt, but jow is andy's video machine dangerous?
[20:30:17] <andypugh> It’s like a soldering iron, OK if you grab the right part.
[20:30:37] <Sync> yeah, it just looks interesting
[20:30:43] <Sync> with the spinnypart advancing
[20:30:55] <XXCoder> its cutting so harf
[20:31:06] <XXCoder> looks like ~1/4 in per pass
[20:31:15] <XXCoder> of course its hard to tell scale in video
[20:31:31] <Sync> well, knowing that you did not pay a lot for it, not a lot andypugh :P
[20:32:21] <XXCoder> not too familiar with lathe but it looks like its cutting little too hard
[20:32:47] <andypugh> Not even slightly
[20:32:57] <XXCoder> really? interesting
[20:32:58] <witnit> andypugh: "I've replaced the feeds gearbox here with a brand new casting, which contains a servo motor.....and a piece of wood" I lost it hahaha
[20:33:19] <XXCoder> wood, the new cast iron
[20:33:28] <andypugh> XXCoder: It’s got a 3hp motor on a 10” lathe.
[20:34:01] <XXCoder> what is that part anyway andypugh
[20:34:10] <XXCoder> chess peice? ;)
[20:34:26] <andypugh> I messed up on a run not shown and it took a 6mm cut with no change in spindle speed and no flex, but made a horrible wrap of swarf.
[20:35:17] <Sync> yeah, it seems like awful chewinggum alu too
[20:35:21] <CaptHindsight> andypugh: are the spindle and spindle bearings the originals?
[20:35:25] <andypugh> The part is one of the sample G-code files you get with LinuxCNC called “lathe_pawn”
[20:36:13] <andypugh> Yeah, it’s just some random material. It’s at least the wrong tool geometry, and probably needs more SFM
[20:37:33] <andypugh> I have no spindle encoder, and it’s not running CSS either.
[20:39:14] <XXCoder> interesting
[20:39:41] <XXCoder> andypugh: thanks on video earlier, subbed to guy
[20:39:50] <XXCoder> I like channels that actually caption!
[20:40:01] <CaptHindsight> andypugh: how did you align the headstock to the bed?
[20:40:09] <XXCoder> voodoo
[20:40:21] <andypugh> I have not taken it off. I hope it is correct ;-)
[20:40:34] <CaptHindsight> where are the adjustments made? ah
[20:41:03] <XXCoder> I suppose can test by cutting already accurate rod by painting it blue
[20:41:08] <andypugh> There is some adjustment in the mounts, with a set of alignement plates at the back.
[20:41:14] <XXCoder> and "no cut" it very closely
[20:42:18] <andypugh> You can either cut a test bar and measure with a micrometer, ot fit a known-parallel test bar in the spindle and test with a DTI on the toolpost
[20:42:31] <Sync> it must not be parallel
[20:42:33] <Sync> but round
[20:43:38] <andypugh> I disagree. Lathes are almost incapable of making not-round
[20:43:59] <Sync> your testbar
[20:44:10] <XXCoder> andypugh: it can be round but not parallel
[20:44:29] <Sync> not the one you cut, but the one you measure off
[20:44:39] <Sync> the one you cut, must be parallel, indeed
[20:44:51] <Sync> but the other one, not so much
[20:45:13] <Sync> as you can just spin it and subtract minmax and get the centerline of it
[20:47:17] <andypugh> One of the things I like about lathes is that you don’t have to make them very carefully to get good results. You can make incrementally better things with a lathe making its own parts. I am not sure that is true of a mill.
[20:47:57] <skunkworks> we made a lot of parts on a lathe that had about 1/8-1/4 dip in the bed
[20:48:07] <skunkworks> finally got rid of that one
[20:48:12] <Sync> yeah height is relatively uncritical
[20:48:19] <XXCoder> andypugh: lathe was one of earliest precision
[20:48:40] <XXCoder> its dead simple, make sure it dont move around while running, and check sizes
[20:49:18] <XXCoder> I heard can make lathe with a lathe, but not sure how accurate a statement that is lol
[20:50:17] <Sync> kinda true
[20:50:35] <andypugh> You can make a lathe with an axe :-)
[20:51:14] <andypugh> Have you seen this guy? https://www.youtube.com/watch?v=wnv0DAR_gWA
[20:52:03] <XXCoder> interesting
[20:52:09] <XXCoder> human made lathe
[20:52:15] <XXCoder> *powered
[20:53:07] <CaptHindsight> my old job
[20:53:58] <gregcnc> I have a link to that with a more appropriate title https://www.youtube.com/watch?v=h38I6QqledQ
[20:54:11] <gregcnc> capt storms a brewin
[20:55:44] <CaptHindsight> about to head out into it
[20:56:20] <alex4nder> gregcnc: haha
[20:56:22] <andypugh> There are still folk in the UK making a living with hand-powered lathes. Well, pedal-powered: https://www.youtube.com/watch?v=KUv3OwY5Etg
[20:59:03] <XXCoder> made me wonder how old lathe is
[20:59:42] <andypugh> The egyptians used them around 4000BC
[21:04:04] <XXCoder> dang
[21:06:30] <gregcnc> what the story with the captured rings he made at the end?
[21:07:04] <XXCoder> its showcase I guess for lathe
[21:07:07] <andypugh> Just showing off :-)
[21:19:03] <CaptHindsight> SPC Lathe = slave powered controlled lathe
[21:19:28] <XXCoder> I wonder if they used Nile as power source too.
[21:20:18] <CaptHindsight> or maybe SPPA = slave powered pharaoh approved
[21:21:03] <andypugh> According to Wikipedia I was a bit out, they had them in ancient Egypt, but late Ancient Egypt, arounf 1300BC not 4000
[21:21:09] <XXCoder> What's interesting is that Egypt actually used workers, not slaves, to build all that prymids.
[21:21:58] <XXCoder> they found a LOT of small but well decocated graves of workers, oncluding head chief worker. backs was... wow compacted
[21:22:17] <XXCoder> they dont do bury thing with slaves
[21:22:54] <CaptHindsight> so the Israelites were paid workers
[21:23:13] <XXCoder> Israelites dont get buried that way either
[21:23:25] <XXCoder> to be sure, they had slaves. but not that many
[21:23:34] <XXCoder> all countries had slaves then
[21:25:53] <CaptHindsight> Moses led 600,000 people out of Egypt according to that old christian/hebrew book
[21:26:25] <XXCoder> indeed
[21:27:19] <CaptHindsight> when Israel left Egypt they had 603,550 armed men. How many had no arms don't ask me
[21:28:49] <XXCoder> how many ladies and children is left out too lol
[21:28:56] <XXCoder> thats huge population for back then
[21:29:27] <CaptHindsight> "The population count of Egypt under the first dynasties was possibly between 1 and 2 million inhabitants
[21:30:11] <XXCoder> assuming lady had same count, egypt was pretty depopulated after that
[21:30:26] <XXCoder> I'm sure it was just case of number growth across storytellings
[21:30:38] <CaptHindsight> About 2 million during the Old Kingdom (2500bc), 4 million around 1500bc, 7 million when conquered by Rome.
[21:30:46] <CaptHindsight> have to fact check
[21:31:22] <CaptHindsight> I'd like to have a condo made ah stone-ah
[21:32:38] <CaptHindsight> https://youtu.be/wgTPH5y1-ZI?t=15s Steve Martin - King Tut (Live 1979)
[21:32:42] <CaptHindsight> still funny
[21:35:10] <CaptHindsight> XXCoder: you might possibly exaggerated like the age of Methuselah?
[21:35:19] <CaptHindsight> you mean
[21:35:33] <XXCoder> or that 900 year old man
[21:36:02] <CaptHindsight> https://en.wikipedia.org/wiki/Methuselah
[21:36:24] <XXCoder> Hmm remembered Morses was 900+
[21:36:28] <XXCoder> might be wrong
[21:37:11] <XXCoder> cant remember name bah
[21:37:18] <CaptHindsight> ever see the skits by Mel Brooks and Carl Reiner about the 2000 year old man?
[21:37:23] <XXCoder> water seperator heh
[21:37:32] <XXCoder> nope
[21:39:31] <CaptHindsight> https://www.youtube.com/watch?v=XW71TOjsxr0 CARL REINER & MEL BROOKS - 1966
[21:39:37] <XXCoder> moses
[21:40:32] <XXCoder> autocaptions not too good
[21:40:36] <XXCoder> hey beachgoer
[21:41:43] <BeachBumPete> hello
[21:41:53] <XXCoder> hows fla so far
[21:43:17] <BeachBumPete> very very nice honestly... we just got back from eating dinner at the cheesecake factory and now we are watching some movies. Tomorrow we are probably going kayak fishing ;)
[21:50:00] <XXCoder> lol nice
[21:56:42] <jdh> tough life
[22:01:17] <BeachBumPete> heh well we are still not in our new house yet so we have been driving almost an hour each way to get to work/school so that part is kind of a bitch but other than that it is nice so far
[22:08:03] <XXCoder> oh thats fun.
[22:08:18] <XXCoder> mines 12 minute to work
[22:08:32] <BeachBumPete> meh other than the gas its mostly a ride on the turnpike
[22:08:58] <BeachBumPete> once we are in the house it will be less then ten minutes to work for my wife less than 5 miles actually
[22:09:02] <XXCoder> no traffic?
[22:09:27] <BeachBumPete> there is some but not bad...
[22:10:52] <XXCoder> not bad
[22:11:07] <XXCoder> heh old job it was fairly bad traffic everyday, and expecially fridays
[22:11:26] <XXCoder> 30 minutes most days to go home, and fridat usually hour and half, and one time, 2 hours
[22:12:55] <XXCoder> current work I dont work fridays. awesome! lol
[22:29:53] <witnit> okay question in theory here, I hope this is easy to explain.
[22:30:03] <XXCoder> 2+2?
[22:31:25] <witnit> If I use the current reference for my x/z axis on lathe and use two small servo motors with encoders as handwheels, could I have them give resistance to the person turning them as they are using amps to cut with the actual XY motors? so you have some sort of "feel" like you do with a manual lathe?
[22:31:34] <witnit> xz*
[22:33:09] <djdelorie> brushless DC motors would work better
[22:33:54] <witnit> you think it would have that same feel?
[22:33:55] <djdelorie> i the encoders were precisely aligned with the steppers (probably by the computer, "after the fact") maybe, but steppers have a very small step to push against
[22:34:26] <djdelorie> dunno
[22:34:59] <witnit> it would be like that arm wrestling game at the carnival
[22:35:11] <djdelorie> just sayin that bldc's are easier to run in "torque mode" which is the type of feedback you want
[22:36:35] <djdelorie> actually, even a regular dc motor could be used, I suppose
[22:38:23] <djdelorie> look up "haptic feedback"
[22:39:14] <djdelorie> the technology seems well understood, as for whether it will give you the "feel" of a manual lathe... let us know if it does :-)
[22:45:46] * djdelorie just notes you mentioned "servos" in the first message, duh
[22:57:58] * pcw_home is surprised that form B OPTOs exist
[23:06:27] <XXCoder> haptic be happen'