#garfield Logs

May 08 2013

00:54 rue_bed Lola8088, gnight
00:54 rue_bed lolina8088, gnight
18:06 Tom_itx ping
20:47 rue_house ok, whats next
20:47 rue_house pong
20:48 Lola8088 hi
20:48 rue_house hi
20:48 tobbor rue_house! like, totally tell us about the project!
20:49 rue_house shhh you
20:49 rue_house I suppose I better try to get a room at the hotel for me and ma to stay
20:49 Lola8088 hehehhehe
20:49 rue_house I cant remember which it was quey
20:49 Lola8088 what... for the maker faire?
20:49 rue_house yea
20:50 rue_house if we take the 12:20 over
20:50 rue_house maybe I shouldn't try to do a half day of work
20:50 Lola8088 maybe not
20:50 Lola8088 you gonna come meet my ma?
20:56 rue_house yes, ... sat?
20:56 Lola8088 how bout now?
20:56 rue_house or thats supper
20:56 rue_house uh, let me clean up for a bit
20:56 Lola8088 I'm making a late dinner... should be ready at 8
20:56 Lola8088 pad thai
20:56 rue_house cool
20:57 Lola8088 only if it works, no worries
20:57 rue_house What is the earliest you are available for load-in? I just have to figure out an answer to that quesion
20:59 Lola8088 depends on what ferry you take
21:00 rue_house I dont know how long it takes to get to the PNE from horseshoe bay
21:01 rue_house and if I drive, I have to acount for being lost a few times
21:01 rue_house iamturnip,
21:01 rue_house two things!
21:01 rue_house a) do you know where I can BUY a welding bottle?
21:01 Lola8088 it's like 30min max
21:02 Lola8088 plus lost time... you get off at mcgill I think
21:02 rue_house b) can we round up a standard transmission for a ~1991 S10, get a ballpark price? am guessing $300+ shipping? am I close?
21:02 Lola8088 it's pretty straight forward
21:02 rue_house I'm REALLY good at getting lost
21:02 Tom_itx dinner! mmmm
21:03 rue_house yesterday I wen tto madeira pk, the job was in secret cove
21:03 Tom_itx tranny going out?
21:03 rue_house nope, need one I can bolt to an electri motor for testing
21:04 Tom_itx oh
21:04 rue_house a manual
21:04 rue_house caue I'm gonna convert it at the same time
21:04 Tom_itx you can buy small welding bottles
21:05 Tom_itx you must lease the big ones
21:05 rue_house I suppose I should get the boot, shifter and clutch pedal all at the same time
21:05 rue_house I now I can buy an M in vancouver
21:05 rue_house right now I'm paying $100/yr for an empty oxy tank lease
21:05 Tom_itx got my configs all cleaned up now
21:05 Tom_itx they lease them so they can test them every 5 years
21:06 rue_house ok I need something to wear
21:07 rue_house and wakeup
21:11 Tom_itx when is maker fair?
21:11 Tom_itx is that a day or week thing?
21:11 rue_house 1st and 2nd
21:12 Tom_itx they're having a cnc fest here for the linuxcnc thing
21:12 Tom_itx week long
21:12 rue_house cool
21:12 Tom_itx coming globally
21:12 Tom_itx i've never been but plan to go for a day
21:12 Tom_itx i've been by the shop many times though but never in
21:13 rue_house http://www.ebay.ca/itm/RFP50N06-50N06-POWER-MOSFET-N-CHANNEL-60V-50A-/260797369339
21:13 rue_house compared to dk, thats actually a good deal
21:14 Tom_itx for your drivers?
21:14 rue_house in general
21:14 Tom_itx i really like the geckos i got
21:14 rue_house they are good drivers
21:14 rue_house I'v seen one
21:14 rue_house well made
21:14 Tom_itx $$$ but worth it
21:14 rue_house $$$$$
21:14 Tom_itx i'll skimp on some things but others i like good stuff
21:15 rue_house the ones was working with took stepper pulses and operated a dc servomotor
21:15 Tom_itx dsp inside em
21:15 rue_house done right :)
21:15 Tom_itx they have servo or stepper drivers
21:15 Tom_itx smooths out the power band
21:15 Tom_itx oh..
21:15 Tom_itx you don't want to use regular stepping for cnc
21:16 Tom_itx you want microstep or it will oscillate
21:16 rue_house I have for a long time
21:16 Tom_itx i'm just letting you know
21:16 rue_house my chatter is larger than the oscillation
21:16 Tom_itx if you want a good performing cnc
21:16 rue_house remember I got those 12 bit 16 channel pwm chips?
21:17 Tom_itx not really
21:17 rue_house I gave yo the part number and said to check them out
21:17 Tom_itx oh
21:17 Tom_itx maybe i remember
21:17 rue_house http://www.ebay.ca/itm/2pcs-TI-TLC5940NT-TLC5940-DIP28-EEPROM-PWM-Control-16-Channel-LED-Driver-/180883027864?pt=US_Amplifier_Parts_Components&hash=item2a1d77f798
21:18 rue_house I got like 10 for $15 or something
21:18 Tom_itx led driver
21:18 rue_house look at the datasheet
21:18 rue_house its just a multichannel pwm chip
21:19 Tom_itx why do you need a pwm chip?
21:19 Tom_itx lcnc will generate the steps for you
21:19 rue_house you realize I could put pwm on every leg of 4 steppers with that?
21:19 Tom_itx yeah
21:20 rue_house should produce crazy microstepping
21:20 rue_house or for whatever
21:20 Tom_itx rifs parts looked good
21:20 rue_house 16 dc servos
21:20 rue_house from one chip
21:20 Tom_itx yeah
21:22 rue_house I ahve some other ones too, 8 channel
21:23 Tom_itx i hope you get into linuxcnc soon though
21:24 rue_house the hardware is mostly togethor for the new machine
21:25 Tom_itx make sure your drivers can take step and direction signals
21:25 rue_house need to put on the position senors and the limit detectors
21:25 rue_house yup, use my atmega32 servo code
21:25 Tom_itx i'd highly recomend you getting a card instead of using the parport
21:25 rue_house heh
21:25 Tom_itx much more IO and alot better performance
21:26 rue_house the interface on the cards change too much
21:26 Tom_itx iirc i got 48 io or so
21:26 Tom_itx mine is a parport card
21:26 rue_house your budget it bigger
21:26 Tom_itx but they have a pci card
21:26 rue_house I have too many projects for big budgets
21:26 rue_house pci is out
21:26 Tom_itx you splurge at times too
21:26 rue_house yup
21:26 Tom_itx 2 cards
21:27 rue_house speaking of which I have to finish the reprap
21:27 rue_house I can use an ata port :)
21:27 rue_house 8x 16 bit ports
21:28 rue_house ata is obsolete too
21:28 Tom_itx the daughter card i got was rs422 oriented
21:28 rue_house ok! a tea and I'm gonna change and go!
21:29 Tom_itx i used most of it single ended though
21:29 Tom_itx http://www.mesanet.com/
21:29 Tom_itx 7i43 and 7i47
21:30 Tom_itx under 'anything io fpga cards' and 'anything io daughter cards'
21:32 rue_house you program for the fpga on it?
21:32 Tom_itx they come with bit files you load
21:32 Tom_itx or you can mod one yourself
21:33 Tom_itx they have configurations for several types of setups
21:33 Tom_itx or they will mod one for you
21:33 Tom_itx pcw works there and is in #linuxcnc
21:33 Tom_itx big help
21:34 Tom_itx the setup loads at startup
21:34 rue_house ok I better put something on and go
21:34 Tom_itx i'd highly recomend that and the geckos
21:35 Tom_itx the 7i47 was $69
21:35 Tom_itx iirc
21:36 Tom_itx the 7i43 was 99
21:36 Tom_itx but i got the one with the larger fpga
21:36 Tom_itx not really needed
21:37 Tom_itx so 79 or so
21:37 Tom_itx that's 48 IO
21:38 Tom_itx all the tasks are offloaded to it so the parport keeps up fine
21:38 Tom_itx i've used alot of the io too
22:39 iamturnip rue_house: welding bottle - Princess Auto
22:39 iamturnip as for the tranny
22:39 iamturnip dirty cheap
22:40 iamturnip I will find out tomorrow for you
22:40 iamturnip email me your VIN please
23:09 rue_house ok
23:41 rue_house ok, I'm interested to see what we can do with that
23:41 rue_house oh, dont need the bell housing either... dont know if its optional on that one...