#garfield Logs

Oct 31 2013

00:14 katsmeow-afk en-vlopie
00:14 katsmeow-afk envelope
00:15 tsmeow-afk names a computer Mable just so she can say Mable is programm
00:23 rue_house hmmm
02:20 katsmeow-afk <cough> 170ma x 2400 chips = 336amps@5v or 1,680 watts
02:21 katsmeow-afk that's 307 megabytes of 8bit 20nanosec static rams
02:22 katsmeow-afk de-selected chips pull only 1ma, or if all de-selected: 2.4amps or 12 watts
02:26 katsmeow-afk so 128 cpus, with 128bit instruction busses, using qty16 128kx8 rams, will consume 348amps@5v just for the ram in use at 50Mhz (times 128 = 6.4Ghz) <cough>
02:32 katsmeow-afk using 4,992 chips 8kx8, so only part of the ram is enabled at a time, is 39 chips per cpu, 312k bytes, at best can make 24k of 104 bit wide vliw buss
02:34 katsmeow-afk 16amps
02:38 katsmeow-afk 348 amps @ 5v can be made from 30 19v@4.5amp laptop psu and a /3 voltage down convertor on each psu
02:39 katsmeow-afk well, that's all the top end, if wound down from 128 cpus and 6.4Ghz, the power needs drop, and it's still a custom cluster that runs no known instruction set, so cannot be hacked
02:47 tsmeow-afk ponders a C64 with 128 cores, 6.4Ghz, 4meg of level1 cache, 1Gb of level2 cache, 64Gb of shared ram, and 10Tb of hdd (with 32 parallel ata133 bus
09:26 rue_house 384000uF filter cap?
09:27 rue_house 384mF
09:27 rue_house could a person use a .33F cap?
09:27 rue_house or have to use .47F ?
09:29 katsmeow-afk good grief that would be a big cap
09:29 katsmeow-afk prolly have way too much esr to be practical too
09:29 katsmeow-afk use high freq switchers that need smaller caps, and use more of them
09:30 rue_house 384 1uF caps?
09:30 rue_house er 1000uF
09:30 rue_house put them in sockets for easy change-outs
09:31 katsmeow-afk heh
09:31 rue_house :)
09:33 katsmeow-afk are we just getting trolled in #robotics by Ubuntivity and defaultro ?
09:34 katsmeow-afk because i cannot see them learning anything
09:34 rue_house dunno
13:41 tsmeow-afk remembers saying to someones that if you pulled the commutator off a motor like the starter motor, and replaced it with slip rings, and mosfets on the rotor to operate the coils on it, you would have a software convertable stepper-servo in
13:42 katsmeow-afk of course, when i saidit, there were no good and cheap low-resistance mosfets, now there are
15:23 katsmeow-afk Mouse over image to zoom
15:23 katsmeow-afk Have one to sell? Sell it yourself
15:23 katsmeow-afk 320 pcs Lot M27C256B-70C6 ST Microelectronics NEW Never Used 320 Pieces
15:23 katsmeow-afk $30 + $12 s&h 7hrs
15:23 katsmeow-afk 0 bids
15:23 katsmeow-afk 32kx8
15:24 katsmeow-afk that's 10megabyte x 8bits or 32k x 2560bits
15:25 katsmeow-afk 39PC (3 FULL TUBES) 27C256-15FA SIGNETICS 256K 150NS EPROM ; $39 + $6 s&h
15:28 katsmeow-afk
15:28 katsmeow-afk 2400x Atmel Corp AT27C256R-70JC EPROM, 32K x 8, 32 Pin New *IC12
15:28 katsmeow-afk $3000
15:30 tsmeow-afk is not in the market for any, seeing how she just recieved 12 27256 of under $3, and there's 10 27C1002 for
15:31 katsmeow-afk but if you wanna split a pile of them at 7.6 cents each, i'll bite
15:31 katsmeow-afk qty 320 / $42 = 7.6 cents
15:31 tsmeow-afk checks the calc a
15:32 katsmeow-afk 13 cents
15:32 katsmeow-afk but if you wanna split a pile of them at 13 cents each, i'll bite
15:40 katsmeow-afk looks like all the 64kx8 and 128kx8 are still at $1 per chip, even in qty
15:41 katsmeow-afk yo can piggyback two 32k and use the CE as the top bit, and get 64k for 26 cents ;-)
15:42 katsmeow-afk well, there's qty144 27C256 (32kx8) in qfp for $50
15:43 katsmeow-afk 320 pcs Lot M27C256B-70C6 ST Microelectronics NEW Never Used ; $42 beats that
15:48 katsmeow-afk oh goodie, Israel bombed Syria again
15:48 katsmeow-afk so Russia can now bomb Israel
15:48 katsmeow-afk so usa bombs Russia
15:48 katsmeow-afk i wonder who gets to bomb the usa
16:32 Tom_itx NC
16:34 Tom_itx err NK
16:41 katsmeow-afk want any eproms, Tom? for lookup tables, cnc position correction factors, fixed pulse train simulations, avr boot roms?
16:49 katsmeow-afk 1 PCS ALTERA EP4SGX360KF40I3 bids at $51 now + $17.50 s&h ; for one chip
16:57 Tom_itx 9114901159818821881018
16:57 Tom_itx USPS
16:58 katsmeow-afk already? cool, thanks
16:58 tsmeow-afk was just measuring chain to go o
16:59 katsmeow-afk can't quite figure out, the #35 chain is 1/2 the rated load as #40 bicycle chain, and if you compare them side by side, the #35 is heavier
17:00 katsmeow-afk it's also wider
17:00 katsmeow-afk and i dunno why they call it scooter chain, because no scooter or gocart parts i have will fit #35 chain
17:01 katsmeow-afk the only thing that has used 35 around here till now is the table on the big floor drill press
17:02 katsmeow-afk and it gets pissy because it lifts only one side, going to mod it with a chain on the otehr side to lift it and lower it evenly on both sides at once
17:02 Tom_itx school bus upside down in the water here just now
17:03 katsmeow-afk i want a better, faster-to-set bit height setting also
17:03 katsmeow-afk why?
17:03 katsmeow-afk washing the students?
17:04 katsmeow-afk if that happened here, i'd say because they were going around curves on 2 wheels again, and slid off
17:04 katsmeow-afk bridge washout?
17:06 katsmeow-afk 2 bridges washed out in Liberty 40 yrs ago where my gparents lived, left some 30 houses on a hill top as an island for weeks till the state threw a truss across the creek
17:06 katsmeow-afk almost no water in dry weather, but it filled 20ft and went over the bridges in one storm
17:07 katsmeow-afk tore out a lot of land, they moved asap after that
17:09 katsmeow-afk the bottom end of the storms you got will be here tonite, but i think they won't be 3 storm groups in a row like you got
17:09 Tom_itx probably muddy county roads i suspect
17:09 Tom_itx we got alot of rain last night
17:09 Tom_itx and this am
17:10 tsmeow-afk nods ,, Tiggr logge
17:19 tsmeow-afk looks at rue ..... someone out there is bidding minimum on some large chip lots, and winning 1000's of chips for $
17:21 katsmeow-afk Tom, radar here has looked about like this all day long, since 7am, it's gonna be a all-nite rain when it finally gets here : http://tinyurl.com/odyzdeh
17:21 katsmeow-afk the actual url has a length of 565 characters and won't paste to irc
17:37 tsmeow-afk ponders adding a lil capacitance to a 700Mhz differential line and feeding the lines to a buffer and see if it doesn't spit out 1.4Ghz pu
17:51 katsmeow-afk woah, 2000pcs of MPSA92 $3
17:52 katsmeow-afk pnp 300v 500ma
17:53 katsmeow-afk 1512pcs TIP122 $3
17:56 katsmeow-afk 4,925 pcs of 74F04 $3
18:10 katsmeow-afk 6630 PCS ON SEMICONDUCTOR MPSA42This seller accepts PayPal
18:10 katsmeow-afk 4 Bids: $26.00
18:10 katsmeow-afk 2000 PCS ON SEMICONDUCTOR MPSA92RLRAThis seller accepts PayPal
18:10 katsmeow-afk 1 Bid: $2.99
18:12 katsmeow-afk the 42 is the npn, the 92 is the pnp
18:19 katsmeow-afk i am not biffing on either, so if you want them........
19:06 katsmeow-afk ok, if i use a 10-tooth on the starter driving a 64-tooth, and that drives a 10-tooth that drives a 48-tooth, i get ~30 motor revs per 10" bike tire wheel rev, hows that sound?
19:07 katsmeow-afk or, ~1 inch of tire move per motor revolution
19:11 katsmeow-afk so at 30rpm on the motor, i get 30 inches of travel, 900rpm = 900inches/75ft-minute, 2000rpm = 170ft-min
19:12 katsmeow-afk 2000rpm is going to be loud on a chain
20:01 tsmeow-afk sticks with the one-stage reduction of 10-teeth to 64-t
20:02 katsmeow-afk it's 6.4 motor rev per wheel rev tho, so it may not climb a hill with 500lbs on it
20:20 katsmeow-afk "i'm from Europe, when i bid $1.400 , it means what you mean when you type $1,400, so why didn't i win the auction??"
20:48 katsmeow-afk M27C256B-70C6 is not an eprom, it's otp rom
20:49 katsmeow-afk he is selling a qfp package, only the pdip has a uv window
21:55 tsmeow-afk sw
22:00 katsmeow-afk yano, using a darlington plus a diode from +5, he is all out of voltage , he dropped over 2v
22:05 katsmeow-afk he should switch to +12, maybe even use mosfets for the switching, leaving the tip42 as current limiting
23:54 katsmeow-afk Dell: Odor on 6430u Laptops Is Palm Rest Assembly, Not Cat Urine