#robotics Logs

Nov 22 2014

00:07 mrdata oh, maybe it's online jusec
00:07 rue_more those are the big ones,...
00:08 rue_more I think there is a FU---- something
00:08 rue_more kijakama?
00:08 rue_more er fukikama
00:08 rue_more fujikama
00:10 rue_more mrdata, what colour was it?
00:11 rue_more I'm gonna sit and be useless in my shop
00:13 mrdata some acronym name, five letters maybe, canadian make
00:14 mrdata grey painted or brushed metal
00:14 mrdata large looking control box (filing cabinet size) with six servo controllers (100watt and 50 watt)
00:14 rue_shop2 oh
00:15 rue_shop2 is it about an 18" reach?
00:15 mrdata more, i think
00:15 rue_shop2 oh so its not a big robot
00:15 rue_shop2 is it aluminum frame? with chain drive?
00:15 mrdata probably 18" for upper arm, same for forearm
00:15 mrdata oh, maybe more
00:16 mrdata no chain
00:16 mrdata i didnt measure the span, could be 24" for upper arm, same for forearm
00:17 rue_shop2 ah its not a rhino then
00:17 mrdata no
00:17 rue_shop2 http://www.theoldrobots.com/images40/robot8.JPG
00:17 rue_shop2 ok
00:18 rue_shop2 you dont remmeber what colour it is?
00:19 mrdata i said
00:19 rue_shop2 oh grey, sorry
00:20 mrdata the thing is old, so has a layer of dirt build-up
00:20 mrdata i think the baser is blue
00:20 mrdata *base
00:20 rue_shop2 its not a major brand
00:20 mrdata but i could only remember grey being the arm;
00:21 mrdata they have the service manuals; plus, the mfr still exists, i am told
00:21 rue_shop2 CRS?
00:33 mrdata no
00:33 data will find
00:36 mrdata ugh; this video kyle posted, of the guys wheeling it in, is rather dark and uninformative https://www.youtube.com/watch?v=ZcdSeek0viA
00:36 mrdata unfortunately
00:43 mrdata the controller cabinet reminds me of this http://www.motoman.com/used/detail.php?stockno=SVG-0001
00:48 mrdata different look, inside though
00:49 mrdata the arm's interface cable does remind me of the CRS connectors though
00:49 mrdata i wonder if i dismissed CRS too soon
00:50 mrdata no i am sure there were more than 3 letters in the name
00:52 mrdata there may have been a Y in it
06:10 marvin-hh How did Tesla (the car manufacturer) manage to get such advanced robotics technology?
06:12 marvin-hh Is it just that they found manufacturing partners and let them do the bulk of the work? It just seems amazing that a company which exists for such a short time managed to get so much capital allocated in a sensible fashion.
06:57 deshipu marvin-hh: Elon Musk has quite some money to throw
06:58 marvin-hh deshipu: so, it's really just saying to company X: " we have problem X, and this is how a human currently does it, we have X amount of money to give to you for T time profit. KBYETHX."
06:58 marvin-hh deshipu: for companies X_1, to X_N, with N large enough.
06:59 deshipu I'm not sure that's an effective way of doing it.
06:59 deshipu I think he just hired a lot of very smart people.
06:59 deshipu You can do it if you have a very interesting and hard project and lots of money.
07:00 deshipu You basically take experienced people from other companies who already figured those things out.
07:00 marvin-hh deshipu: so, does he pay more than Apple/Facebook or is it just that he competes in a different pool?
07:00 deshipu No idea, I never got an offer :(
07:00 marvin-hh deshipu: but you interviewed there?
07:00 deshipu no
07:01 deshipu that may be one of the causes
07:01 marvin-hh deshipu: we have issues getting even a few good candidates.
07:01 marvin-hh deshipu: I just don't get how someone would get 1000s of good engineers.
07:01 deshipu yes, all the good ones already have jobs
07:01 deshipu so you need a very hard and interesting project to attract them
07:02 deshipu and ambitious
07:02 deshipu plus excellent work conditions and such
07:03 marvin-hh deshipu: yeah, but I don't think they have excellent work conditions at Tesla.
07:03 marvin-hh deshipu: I have no doubt that they are good, though.
07:04 marvin-hh deshipu: do you know whether all the other car companies have the same advanced robotics running currently?
07:04 marvin-hh deshipu: e.g. of a company like Toyota (the largest car company in the world), you would expect that no human is involved in the manufacturing anymore.
07:05 marvin-hh But OTOH, perhaps they are just lazy when compared to Tesla.
07:05 marvin-hh I think Tesla actually will try to go for *complete* automation.
07:07 deshipu well, Tesla is a startup
07:07 deshipu not a corporation
07:07 marvin-hh Oh, well, Toyota is also doing the same thing (or had already done so).
07:07 deshipu it moves much faster
07:08 marvin-hh A large company should also innovate and should fire everyone who is not cooperating in that process.
07:08 marvin-hh It's just that often there are laws in place which stop a company from doing that.
07:09 marvin-hh I think those laws should probably be abandoned; it makes business almost impossible and I strongly believe that some people cost the organisation more than they create in value.
07:09 deshipu it's not that simple
07:53 deshipu marvin-hh: personally I would go for something like http://www.stephenhobley.com/blog/2010/09/07/arduino-sending-midi-over-usb-for-6-in-parts/
07:54 deshipu marvin-hh: sorry, wrong channel :)
11:05 SquirrelCZECH nah
11:05 SquirrelCZECH anybody able to help me with simple circuit? :)
11:05 SquirrelCZECH (looong description and I can miss a lot of details, so I will prefer to wait until someone volunteers this time)
11:09 deshipu pastebin the description, so you can reuse it :P
11:10 SquirrelCZECH good idea
11:14 SquirrelCZECH http://pastebin.com/stuWLtmT
11:14 SquirrelCZECH tadaaaah
11:23 SquirrelCZECH nobody? :(
11:27 GuShH_Lap huh
11:27 GuShH_Lap SquirrelCZECH: hopefully all your GNDs are connected
11:28 GuShH_Lap as for the divider, see if the GPIO requires a certain amount of current (is it pulling your voltage down?)
11:28 mrdata english descriptions are error prone; is there a schematic?
11:28 GuShH_Lap other than that it sounds like the first problem, your gnds are not connected with each other
11:29 SquirrelCZECH GuShH_Lap: tested, GND are connected
11:29 GuShH_Lap Mr_Sheesh: schematics are error prone also
11:29 GuShH_Lap mrdata: *
11:29 GuShH_Lap Mr_Sheesh: die
11:29 SquirrelCZECH ehm
11:29 SquirrelCZECH any programs which I can learn fast and draw it in?
11:29 SquirrelCZECH ohhh
11:29 SquirrelCZECH let me find paper
11:29 GuShH_Lap eagle works fine
11:29 mrdata SquirrelCZECH, i use ltpsice
11:29 GuShH_Lap if you want to simulate try that
11:29 mrdata you can simulate circuits in ltspice
11:29 GuShH_Lap sure, pseudoimulate.
11:30 mrdata lumped element model
11:30 mrdata decent for non radio frequency
11:30 GuShH_Lap iterate and integrate your errors ad infinitum
11:30 GuShH_Lap now you can cross from ltspice to eagle rather easily
11:30 GuShH_Lap used to be harder
11:31 GuShH_Lap but last time I tried to import an ltspice circuit into eagle it crapped out
11:31 GuShH_Lap it was the free eagle version, not sure if that matters.
11:31 mrdata blah blah quack quack
11:32 GuShH_Lap mrdata: their initial binary to xml version was shit as well
11:32 GuShH_Lap it had a lot of issues with origins
11:32 GuShH_Lap quack yourself.
11:33 GuShH_Lap you know this channel has gone to literal shit
11:33 GuShH_Lap it's just a rue based monologue
11:33 GuShH_Lap nothing of value or interest
11:34 mrdata GuShH_Lap, just sayin' i'm not into debating right now
11:35 GuShH_Lap debate what, facts? the issue has a lot to do with their incomplete -at the time, don't know right now- parts library for the conversion.
11:39 SquirrelCZECH http://easyeda.com/bxhDmIscyU
11:41 SquirrelCZECH so, P1: 1: 12V, 2: sensor pin, 3: GND
11:41 SquirrelCZECH P3: 1: sensor pin, 2: GND
11:41 SquirrelCZECH normally, on P3 is mechanical switch, and when it's ... closed there is 5V between that pins
11:45 mrdata ok, so i'm not getting why there are three resistors
11:45 mrdata is this TTL level logic happening here?
11:46 mrdata if so, a 10k pull up might be advisable
11:46 SquirrelCZECH there are two in a row because that's actuall physicall way how it's made...
11:47 mrdata tell me about the sensor
11:47 mrdata do you have a data sheet for it?
11:47 SquirrelCZECH on P3 which is reprap electronics should be ... "pullup" which I setted in firmware
11:48 mrdata ok, well if P3 has internal pullup then okay
11:48 mrdata so when you actuate the switch, you get a logic low on that pin
11:48 mrdata "on" position; oh, did you say it is normally on?
11:49 mrdata if so, then it's reverse
11:49 SquirrelCZECH yeah, normally on
11:49 mrdata when switch opens, the internal pullup brings the pin high
11:50 SquirrelCZECH hmm
11:50 SquirrelCZECH well
11:50 SquirrelCZECH it's true that when switch is not pressed
11:50 SquirrelCZECH there are 5V
11:51 SquirrelCZECH when it's presed there is 0V on my multimeter
11:51 mrdata oh? then that switch seems to be in the normally open configutation
11:51 SquirrelCZECH but
11:52 SquirrelCZECH I can't actually tell if "pressed" means it's closed/open
11:52 SquirrelCZECH hard to tell
11:52 SquirrelCZECH http://reprap.org/wiki/Megatronics_2.0#Connecting_end_stop
11:52 mrdata you can tell if you have a continuity tester; do you have a multimeter?
11:53 mrdata measure the continuity across the switch as you press or release it
11:53 SquirrelCZECH continuity?
11:53 SquirrelCZECH oh yeah
11:53 SquirrelCZECH mrdata: closed when pressed
11:54 mrdata ok
11:54 mrdata is that what you need?
11:55 SquirrelCZECH ehmm
11:55 SquirrelCZECH not really? :D
11:55 SquirrelCZECH mrdata: now that I now how it works
11:55 mrdata ;)
11:55 SquirrelCZECH I am not sure how to incorporate 12V PNP sensor into that
11:56 mrdata show me the datasheet for the sensor
11:56 rue_more pulldown resistor
11:56 rue_more ...and...
11:56 rue_more antoher resistor
11:57 rue_more a votlage vidider would work
11:58 rue_more +V
11:58 rue_more R2
11:58 rue_more VR1
11:58 rue_more R1
11:58 rue_more GND
11:58 rue_more Divider supply: 12
11:58 rue_more bottom resistor: 1000
11:58 rue_more divider output: 5
11:58 rue_more R2 is :1400.000000
11:58 rue_more R2 dissipates 0.035000w
11:58 rue_more R1 dissipates 0.025000w
11:58 rue_more so, 1k and 1.4k
11:58 rue_more will give you 0-5 out
11:58 SquirrelCZECH oh
11:58 SquirrelCZECH nice
11:58 SquirrelCZECH 100k is too big maybe?
11:59 rue_more you can multiply both those values by whatever you want
11:59 rue_more so 100k and 140k
11:59 SquirrelCZECH hmm
11:59 SquirrelCZECH I will try 1k and 1k47
12:03 rue_more that shoudl work fine
12:03 rue_more zippo:/files/programming/c/resistor# ./VOUT
12:03 rue_more +V
12:03 rue_more R2
12:03 rue_more VR1
12:03 rue_more R1
12:03 rue_more GND
12:03 rue_more Divider supply: 12
12:03 rue_more bottom resistor: 1000
12:03 rue_more top resistor: 1470
12:03 rue_more Vout is : 4.858300
12:03 rue_more the high voltage for the avr is a little over 2
12:05 SquirrelCZECH nope, reprap eletronics stil doesn't react :/
12:06 SquirrelCZECH 4.96V btw
12:12 SquirrelCZECH updatE: http://easyeda.com/bxhDmIscyU
12:13 SquirrelCZECH there is now 4.96V between megatronics endstop pins
12:13 SquirrelCZECH + of multimeter on S and - on GND
12:13 SquirrelCZECH still electronics don't read to that
12:13 rue_shop2 you said you had a pnp sensor?
12:13 SquirrelCZECH yep
12:15 uirrelCZECH hopes rue_shop2 got some ide
12:22 rue_shop2 well, do you know if the board your connecting it to has a pullup resistor?
12:23 SquirrelCZECH yes
12:23 SquirrelCZECH it has
12:33 rue_shop2 well that will screw up the votlage divider
12:33 rue_shop2 you need a fancier circuit, give me 2 hours or so
12:33 rue_shop2 why did you get a pnp sensor!?
12:34 SquirrelCZECH friends gave me it for a weekend
13:23 SquirrelCZECH hmm
13:23 SquirrelCZECH any tips how to easily manage power source spreading?
13:23 SquirrelCZECH I mean, let's say I have power on two wires
13:23 SquirrelCZECH and need to distribute that
13:24 SquirrelCZECH I don't prefer soldering "wire trees"
15:47 rue_more so , lets make your acircuit for the pnp sensor
15:47 rue_more have any npn transistors?
15:47 rue_more you said the pnp is to 12V yes?
16:08 Tom_itx rue_more, bad news
16:11 rue_more your new motor isn't happening?
16:11 rue_more my reprap is severly obsolete?
16:12 rue_more the battery in my truck cant hold a charge for 2 weeks?
16:12 rue_more earth is going to be hit by an asteroid
16:12 rue_more (again)
16:12 rue_more ?
16:12 rue_more aliens have landed - and their not friendly?
16:13 deshipu tea is out
16:13 rue_more microsoft has copyright the name 'linux'?
16:13 rue_more OH GOD!! NOT OUT OF TEA!!!!
16:13 deshipu you can't copyright a name, you can trademark it
16:13 rue_more aaaAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGGGGGGGGGGGGGGGGGGGGGGGGGGGGAHAAAAAAAAAAAAAAHHHHHHHHHHHHHHH
16:14 rue_more OOH, THAT Would be a good one, everyone who uses linux funding togethor to trademark 'windows'
16:14 rue_more I have about 2 hours left of light outside
16:14 rue_more I need to go take pictures of soemthing
16:15 Tom_itx i blew the boards out in the mill
16:15 rue_more I cant remmeber what, so I'll just take pics of everythig
16:15 rue_more board(s)?
16:15 Tom_itx not sure how either
16:15 rue_more not all your driver boards?
16:15 Tom_itx drivers are good
16:15 rue_more the control baords?
16:15 Tom_itx all the logic ahead of them
16:15 Tom_itx 4 chips at least
16:15 rue_more in the process of hooking up the encoders?
16:15 Tom_itx i may be able to fix em
16:16 Tom_itx i really don't know what caused it
16:16 Tom_itx no it wasn't the encoders
16:16 rue_more what were you changing
16:16 Tom_itx i wasn't working on that
16:16 Tom_itx i wired up another sserial power plug to one that was already there
16:16 rue_more parallel?
16:16 Tom_itx i'd had it hooked up before so the wires were all run
16:17 Tom_itx yes
16:17 rue_more check if all the computesr have ground prongs on the power cords
16:17 Tom_itx had tested it like that before
16:17 rue_more TWICE I'v had equipment ground thru a port when the nautral and ground were lost on the power connector
16:17 Tom_itx all i can see is there may have been 1 io wire that was loose on the board
16:17 Tom_itx i don't see how it could have shorted though
16:18 Tom_itx nothing around it is 5v or more
16:18 rue_more and once it was becasue I'd cut the ground prong off, the power supply grounded thru the vga connector, and blew the boards chipset
16:18 rue_more not a short
16:18 Tom_itx no there are separate power and gnd to each one
16:18 rue_more loss of neutral path on the power connector
16:18 Tom_itx and it also runs thru the ribbon
16:18 rue_more a loose power bar can do it
16:19 rue_more was it after you plugged in the new serial
16:19 rue_more ?
16:19 Tom_itx i don't think i'd plugged the board in yet
16:20 Tom_itx the smoke came from somewhere else
16:20 rue_more the amp for the jukebox in the shop only has 2 prongs, when I plugged it into the jukebox, the ethernet card freaked out, turns out the amps neutral prong wasn't connecting, bad power bar
16:20 rue_more it was grounding thru the audio/ethernet chip
16:21 Tom_itx gonna be fun desoldering RoHS
16:21 rue_more damn, thats not the board with the fpgs's?
16:21 Tom_itx yes
16:21 rue_more damn
16:21 Tom_itx and the daughter card
16:21 rue_more how many 120V supplies are in the whole system, PC to motor?
16:22 Tom_itx 1
16:22 rue_more no, your pc has a different power connector from your motor drivers
16:22 Tom_itx well the pc has one
16:22 rue_more plug, outlet
16:22 Tom_itx parport is the only link
16:22 rue_more and the whole rest of the machine, everything is just 1 plug?
16:22 Tom_itx yes
16:23 rue_more the cnc is grounded I presume?
16:23 Tom_itx the motor plugs into a SSR
16:23 Tom_itx of course
16:23 Tom_itx i redid all that last year
16:23 rue_more yea
16:23 Tom_itx shielded wire to the steppers n all
16:23 Tom_itx shielded power and signal both
16:23 rue_more what do you use to distribute the 120V neutral
16:24 rue_more busbar?
16:25 rue_more you have runt he new motor before, right?
16:25 Tom_itx http://tom-itx.ddns01.com:81/~webpage/cnc/psu/control9.jpg
16:25 rue_more there's no chance one of the two mtoor lugs is attached to the frame
16:25 Tom_itx yeah it had nothing to do with the spindle motor
16:25 rue_more which is the 120V
16:25 rue_more middle?
16:26 Tom_itx http://tom-itx.ddns01.com:81/~webpage/cnc/psu/control8.jpg
16:26 Tom_itx the 120v goes straight to the transformers
16:26 Tom_itx the spindle plugs into a separate box outside the control
16:26 Tom_itx with a SSR in it
16:26 rue_more those top 3 blew?
16:27 Tom_itx 2 of em
16:27 Tom_itx the left one is ok i think
16:27 Tom_itx the left most connector on the left board is what i was adding to
16:27 rue_more who is what?
16:27 Tom_itx right board is the main brains
16:27 Tom_itx middle is just io
16:28 Tom_itx left is sserial io
16:28 Tom_itx and a 4th not shown is sserial io
16:28 Tom_itx i was plugging the 4th back in to run dmesg so i could make a new pin file
16:28 rue_more do the io boards ground to the backplate?
16:29 Tom_itx no
16:29 Tom_itx well probably
16:29 Tom_itx thru the standoffs
16:29 Tom_itx but that's all good
16:29 rue_more is there a logic gnd <-> chassis gnd?
16:29 Tom_itx on the left buss
16:30 Tom_itx the cap in the center is a 24v tap just to suppply the 5v smps on the far upper left
16:31 Tom_itx which supplies 5v logic to all of it
16:31 rue_more take it out and see if it shorted i/o?
16:31 Tom_itx pc doesn't see it now
16:31 rue_more do you think that 24V ont eh 5V could have cuased it?
16:32 Tom_itx because of a chip on the main on is bad
16:32 Tom_itx no
16:32 SquirrelCZECH FINALLY
16:32 rue_more no I mean to see if the 5V reg shorted and let 24V thru
16:32 uirrelCZECH found powering for his r
16:32 SquirrelCZECH two motors
16:32 Tom_itx no
16:32 SquirrelCZECH 8.5T, 350Wats
16:32 Tom_itx the 5v is still good
16:32 SquirrelCZECH nice
16:32 rue_more so its still 5V
16:32 Tom_itx yes
16:32 rue_more hmmm
16:32 rue_more Tom_itx, you have one of the hardest problems to solve
16:32 Tom_itx i haven't pin pointed the exact cause yet
16:32 SquirrelCZECH http://projects.veverak.org/Arduino%20Tank/test9.png
16:32 SquirrelCZECH upgrade
16:32 SquirrelCZECH suspension: done
16:32 rue_more SquirrelCZECH,
16:32 rue_more <rue_more> so , lets make your acircuit for the pnp sensor
16:32 rue_more <rue_more> have any npn transistors?
16:32 rue_more <rue_more> you said the pnp is to 12V yes?
16:33 Tom_itx and i was being the usual careful
16:33 SquirrelCZECH rue_more: yep, PNP is 12
16:33 SquirrelCZECH rue_more: aaaand I have TIP120
16:33 SquirrelCZECH like 5 pieceS?
16:33 rue_more yea, if your use none of the 120 connectons lost the neutral, I'm not sure
16:33 Tom_itx but you can see it's full of wires so who knows what happened
16:33 rue_more SquirrelCZECH, we can do that, but you lost your window of opportunity, I have to go make use of the sunlight before its gone
16:34 Tom_itx anyway...
16:34 Tom_itx i'll look it over later
16:34 SquirrelCZECH rue_more: yeah, nevermind :D
16:34 SquirrelCZECH rue_more: have you any time liter?
16:34 rue_more Tom_itx, I doubt its someting in there
16:34 SquirrelCZECH rue_more: I sort of want to make this properly
16:34 rue_more SquirrelCZECH, in about 3 hours
16:34 SquirrelCZECH *later
16:34 SquirrelCZECH I man later this week
16:34 Tom_itx the dude with the boards said he'd send me some chips
16:34 rue_more SquirrelCZECH, get an npn sensor then!
16:34 SquirrelCZECH :D
16:35 rue_more Tom_itx, can you oven those baords without damaging the connectors?
16:35 Tom_itx i'm not gonna try it
16:35 rue_more you need to know what happened too....
16:35 Tom_itx it's too hard to get into where the chips are to risk that
16:35 Tom_itx between the connectors
16:36 rue_more Tom_itx, can the PC find its card?
16:36 Tom_itx no
16:36 rue_more Tom_itx, check the neutrals on the pc
16:36 Tom_itx it's got one chip on it that's blown
16:36 rue_more I think the PC lost its neutral and took a path thru your io cards
16:37 rue_more maybe IN the power supply, maybe not
16:37 rue_more it could be as mjuch as a loose connector on a power bar
16:37 rue_more are the two plugged intoa surge suppressing power bar?
16:38 rue_more were any of the pwoer plugs loose at the time? maybe one rolled part way out
16:39 Tom_itx no
16:41 rue_more was the pc on at the time the blowup happened?
16:41 Tom_itx yep
16:41 Tom_itx i was getting ready to run dmesg
16:42 Tom_itx so i could map the io and make a new pin file for it
16:47 rue_shop2 there were no electrical changes at the moment it blew?
16:47 rue_shop2 are they both on the same outlet? same circuit?
16:48 rue_shop2 I'm witchhunting for a N loss somewhere
16:49 rue_shop2 Tom_itx, grab a meter, whats the resistance case-to-case between the pc and the cnc?
16:49 rue_shop2 <1R?
16:55 Tom_itx it's not connected right now
16:56 m_itx sets it beside rue_shop2's reprap for a w
18:38 manuel__ hi
18:39 deshipu hello manuel__
18:43 rue_shop2 I'm getting the impression that the worn out sand blasting sand would be good to use for the casting sand mix
18:43 rue_shop2 the nozzel was wearing out on the sand blaster, I made 2 more
18:43 rue_shop2 Tom_itx, do you still have the old electronics for operating the cnc?
18:43 rue_shop2 Tom_itx, aren't the drivers all optically isolated?
18:44 Tom_itx pretty sure they are
18:45 Tom_itx i still have the old equipment
18:45 Tom_itx wires are all wrong now
18:45 Tom_itx i'd sooner let it sit than revert back to that
18:48 rue_more just wondering
18:48 rue_more does that thing do the G-code interpertation?
18:48 rue_more or just io control
18:49 rue_more are there any fuses on your power supply outputs?
18:50 Tom_itx both do gcode
18:50 Tom_itx i don't have fuses yet
18:51 rue_more no I mean the baord in the box, does the rigthmost one handle gcode or just take from the pc
18:51 Tom_itx it handles the moves the pc sends it
18:51 Tom_itx gcode is done on the pc
18:51 rue_more may I suggest, just in case, a 1/2A fuse to the logic power converter?
18:51 rue_more k
18:52 rue_more so all the boards are io handlers
18:52 Tom_itx yeah not a bad idea
18:52 Tom_itx yes
18:52 Tom_itx i planned to add fuses
18:52 Tom_itx never enough time in one day or one life
18:52 rue_more did you pick over the 120V plugs?
18:52 rue_more I didn't catch if they are all onteh same power bar/ circuit
18:53 rue_more :) I sugget a fuse on that fan wire
18:53 Tom_itx i put it away for now
18:53 rue_more what is the output of the 3 power supplies?
18:53 rue_more 24 48?
18:53 Tom_itx ~48v
18:54 Tom_itx all wired in parallel
18:54 Tom_itx at the transformers
18:54 rue_more does the 5v dc-dc take its supply from that?
18:54 Tom_itx phase correct of course
18:54 Tom_itx i told you about the 5v dc
18:54 Tom_itx it gets it's power from a center tap by the cap in the middle
18:55 Tom_itx 24v
18:55 Tom_itx with a diode on it there
18:55 rue_more that what I thought yiou said
18:55 Tom_itx i just picked one at random
18:55 Tom_itx they all have centertaps
18:56 rue_more you know those headers at the top without them being too intimidating to take apart and put back togethor?
18:57 Tom_itx what headers?
18:57 Tom_itx on the boards?
18:57 Tom_itx i took them off already
18:57 rue_more the green barrier strips with the 'million' wires
18:57 Tom_itx the boards are out of the box
18:57 Tom_itx 2 of em are
18:58 rue_more I cant remember what you said, you were getting the 4th board going for the encoder?
18:58 Tom_itx i was getting the 4th board hooked up to see where my pins fall
18:58 rue_more ah
18:58 Tom_itx i wasn't planning to use it for anything right now
18:58 Tom_itx i needed to know where the 2nd channel SSERIAL came out
18:58 rue_more as you add more boards it auto adds the pins to an io array?
18:58 Tom_itx i lost my .vhd file for the bit file
18:59 Tom_itx you can use any of them as GPIO until you use the function mapped to it
18:59 rue_more the 4th board was in and dissconnected?
18:59 Tom_itx i believe so
18:59 Tom_itx the 4th board power harness was wired to the one on the far left
18:59 rue_more so I presume nothing was connected to it even
19:00 Tom_itx the far left header is pwr to it
19:00 Tom_itx no
19:00 Tom_itx and nothing connected to the 3rd board either
19:00 rue_more the red/black/white is power?
19:00 Tom_itx red black is power
19:00 Tom_itx white is field power
19:00 Tom_itx which in this case is also 5v
19:01 Tom_itx the 3rd board has split field power so you can run half at different voltages
19:01 Tom_itx up to like 28v or so
19:01 Tom_itx maybe 32v i forget...
19:01 rue_more where did you conenct the power lines to, the 3rd board or the left header?
19:02 Tom_itx the left header on the 3rd board
19:02 Tom_itx i had it there before
19:03 rue_more ...did the 4th board blow?
19:03 rue_more just the 2 right baords?
19:03 rue_more I'm sure the addition of the 4th board is a red herring to this mystery
19:03 Tom_itx just the 2 right ones
19:03 rue_more its like last weekend
19:03 rue_more we were smelting aluminum
19:04 Tom_itx no i disagree about the 4th board
19:04 Tom_itx i think it was something else but a coincidence
19:04 rue_more and my buddy moved hte power cord of the blower, and it stopped
19:04 rue_more I reset the gfi its on and the motor overload tripped
19:04 rue_more later I found out the pump was siezed
19:05 rue_more nothing to do with him moving the cord, just a fantastic coinncodince
19:05 rue_more so, now I have a tiger torch for melting the aluminum
19:06 Tom_itx so i heard
19:07 rue_more your problem is gonna bug me
19:07 rue_more I'm worried you fix the boads and it blows up again
19:08 Tom_itx i can see it's buggin ya
19:08 rue_more there is just a ground connection thru the pc-cnc cord, right?
19:08 rue_more there is no power in that cable?
19:08 rue_more signal and ground...
19:09 rue_more cause if so, you can prettymuch eliminate the 5V rail from the suspect list
19:10 rue_more maybe later, check for any sign or thermal damage to the path between the pc and the cnc
19:10 rue_more if it burned out all those chips, it may have had enough current to show on a line interconencting them
19:11 rue_more and if its ground, ... I'm right somehow
19:11 rue_more something lifting the ground of one end
19:11 rue_more be is a dc supply or a 120V supply
19:11 rue_more be it..
19:12 Tom_itx i'll be back in a little bit
19:12 Tom_itx i gotta finish something here
19:12 rue_more damn its not just an arduino you can jab another one in!
19:13 Tom_itx i'm planning to check the wiring before i plug stuff back in ya know...
19:13 Tom_itx the dude that made the boards thinks it _IS_ the 5v
19:13 Tom_itx or something related to it
19:18 rue_shop2 if the 5V went over 30ish, the caps would have blown apart
19:18 rue_shop2 I bet ground was lifted between it and the pc
19:18 rue_shop2 I might be wrong, but thats what I think
19:29 Tom_itx i'll take pics of the boards in a bit