#robotics Logs

Feb 29 2012

00:16 rue_house not another drive!?
00:17 katsmeow powerco
00:17 rue_house raised the rate?
00:17 katsmeow reduced the line voltage to zero
00:17 rue_house oh
00:17 rue_house thats been happeneing a lot here
00:17 katsmeow twice in one nite, that's more than the entire time i was in Fla
00:18 rue_house wait not intentionally !?
00:18 rue_house k
00:18 katsmeow no idea
00:19 katsmeow what did i miss?
00:19 rue_house nothing
00:20 tsmeow counts the seeds she dropped and won
00:21 rue_house !thislog
00:21 tobbor This one: http://rueshouse.dyndns.org:82/~ircjunk/irclogs/html/%23robotics-2012-02-29.html
00:21 katsmeow You don't have permission to access /~ircjunk/irclogs/html/#robotics-2012-02-29.html on this server.
00:21 rue_house ugh
00:21 rue_house stupid power outage
00:22 katsmeow yeas i hate them too :-|
00:22 rue_house there ya go, try now
00:23 theBear hmm... what kinda ram chips are on 30 pin simms ?
00:23 katsmeow obsolete ones!
00:23 rue_house theBear, 41256 sounds plausable
00:24 rue_house low end 286 or high end 8088 too
00:24 theBear hmm.... now you got me thinkin about trying this thing
00:25 katsmeow rue, in the ogs, what happened to the guy who came in discussing radios and switchers and batteries?
00:25 rue_house I only just got tobbor back up
00:26 katsmeow oh
00:26 rue_house <rue_house> 2A at 10V, I'm sure its not a 20W radio
00:26 rue_house <omilu> 2Watt radio
00:26 rue_house <omilu> actually repeater
00:26 rue_house <omilu> anybody ever try growing mushrooms
00:26 rue_house <omilu> suprisingly easy
00:26 rue_house was the last thing he said
00:26 rue_house http://www.national.com/AU/design/courses/224/print.htm
00:27 rue_house theBear, ^^^^ class D amp page that looks pretty good
00:27 katsmeow wierd
00:28 katsmeow class D can be very simple if you can do high speed high current drivers
00:30 katsmeow don't automatically fixate on mosfet outputs either, because the gate drive current at the frequencies needed may be more wattage than driving the bases of bipolars
00:31 rue_house it seemed like a more comprehensive document than most
00:38 katsmeow they have several mistakes
00:38 rue_house I didn't read carefully
00:38 katsmeow http://www.national.com/AU/design/courses/224/graphics/pmw_clsbd_static-2.gif
00:39 katsmeow it's less desireable to use a descrete invertor (-1 as shown) than simply invert the digital output
00:40 katsmeow 2) if you use one adc (or pwm modulator) to make the pwm, then you can digitally invert it, clean it up, give it overmodulation protection, distribute it
00:42 katsmeow i used a 250Mhz opamp as a modulator, drove 74F ttl to make nice sharp edges, then drove 100Mhz bipolar transistors TO-92 case to drive 27Mhz bipolar TO-220 case, to drive the biggest TO-3 mosfets i could find for +/- 75vdc
00:43 katsmeow all on a double-side almost all ground plane both sides pcb
00:43 katsmeow and the opamp and osc had separate supplies from the digital
00:44 katsmeow this let me easily play with moving the osc freq from 10khz to 2mhz, with no surprises
00:45 katsmeow dead time was adjusted by the bias at the to-92 bases
00:45 katsmeow bases
00:45 katsmeow yeas, that's what i said
00:46 rue_house :)
00:46 katsmeow adjust base bias of bass amp
00:46 rue_house I have to sleep now :)
00:46 katsmeow no, bAss amp
00:47 katsmeow k, gnite
01:06 tsmeow wonders what would happen by calling someone a heitreatr�f
01:06 katsmeow it's Irish for heterotroph
01:07 katsmeow which means any animal that eats food because it need to to stay alive
01:07 katsmeow it might be like warning people about that lake being contaminated with dihydrogen oxide tho
01:08 katsmeow and if you dive too deep in it, there's enough to kill you
01:19 katsmeow a petrel which lives four times as long as other birds of its size, actually has telomeres that grew longer with age.
02:07 katsmeow-afk After an investigation into that crash, the Air Force blamed Haney, saying he was apparently too distracted by not being able to breathe to properly fly the plane. Hypoxia did not play a role in the crash, the Air Force report said.
09:13 rue_house http://qaa.ath.cx/PiggyPack.html
09:14 rue_house does it make ya wonder whats piggybacked on most of the fuzzy images on the internet?
09:14 rue_house if they had used just the lowest bit, it would prolly be indistinguishable
09:15 Triffid_Hunter rue_house: yeah, now I understand what lolcats is for, it's a giant subversive information dissemination front :P
09:16 rue_house hahaha you could be right
09:16 rue_house best place to hide something is in plain sight
09:18 rue_house http://cds.linear.com/docs/Datasheet/68021fa.pdf
09:18 rue_house I like this datasheet cuase they keep talking about 350V packs, which gets me all excited about my truck conversion
09:19 rue_house http://search.digikey.com/ca/en/products/ZVP2106A/ZVP2106A-ND/92616 I dont think those should be $1 each
09:19 rue_house and I think they should be good for atleast 4A
09:23 rue_house theBear, a state machine could prolly convert the sigma-delta to a integer value
09:25 rue_house hmm, 8 bits would only need a 512byte machine
09:42 theBear hehe, always with the state machines :)
09:43 theBear anyway, if anyone would know, you would... you got a script or code or something for driving a stepper directly from a parport (obviously with buffers)
09:44 theBear re: piggypack, holy crap !
09:45 theBear i feel like when i found out about 'secret' tracks on commercial cd's (rewind from the start of track one....) i couldn't help but check all my cds... none of them had a secret track :(
09:47 theBear maybe i should practice my newfound parport skills and make one myself
16:56 katsmeow-afk rue : http://www.youtube.com/watch?v=DDqbfiejLdM&feature=related
17:55 Tom_itx braaappp
17:56 theBear pardon you !
17:57 Tom_itx breakfast burritos for supper
17:57 Tom_itx i bet even rue_house can make those
18:00 theBear i dunno if i ever approved of the idea of a breakfast burrito
18:00 theBear i could do breakfast tacos
18:00 theBear maybe chilli if i was a cowboy out on a umm, what ya call those things that cowboys go on, oh cattle drive
18:00 Tom_itx with hot sauce?
18:01 Tom_itx tabasco
18:01 theBear at least medium.... mexican food is just, average everyday ingredients without chilli
18:01 Tom_itx only i can't hack that stuff anymore
18:01 theBear i dunno about tabasco, i like it, got 2 bottle in the other room, but i dunno about on mexican
18:02 theBear i like a good solid chili infused kinda burn for mexican, stuff like that runny tabasco-esque chilli-sauce things some of the modern places serve are useless
20:11 rue_house burritos are on my list, but I rarely have the supplies for them
22:04 iR0b0t1 Hi, entertain me.
22:04 Tom_itx no
22:05 iR0b0t1 Oh, I know you!
22:06 iR0b0t1 Well you can blame frogs for my presence here.
22:12 rue_house hmm
22:12 rue_house I wanted to etch the overload board for buddy
22:12 rue_house but I'm not into mixing etchant and standing in the cold waiting for it to heat up
22:25 katsmeow-afk rue, the power co, with their remote-read meters, says i used 8kw when i wasn't here and nothing was on
22:26 katsmeow-afk i was not here the entire time frame of that reading
22:27 rue_house aha
22:27 rue_house their meters are all out
22:27 rue_house I dont know whats going on
22:27 Tom_itx maybe it's an inefficient meter
22:27 rue_house they must have about 40% faulty meters
22:27 rue_house cause I know almost everyone is having problems
22:27 rue_house the shop... THEY DIDN'T PUT A SMART METER ON THE SHOP!
22:27 Tom_itx i bet they fault to their advantage
22:28 rue_house the shop was fine, the house is waaay over
22:28 rue_house I think there is a firmware issue
22:28 rue_house or soemthing
22:28 rue_house someone at the electric company knows
22:28 Tom_itx are they aware of it?
22:28 rue_house how long ago they put in your smart meters?
22:28 Tom_itx ane they gonna rectify it?
22:28 Tom_itx and reimburse you
22:28 rue_house I think there is gonna be a huge lawsuit
22:29 rue_house how long ago they put in your smart meters?
22:29 rue_house they just put ours in before the newyear
22:29 Tom_itx don't have em
22:29 Tom_itx don't want em
22:29 rue_house hmmm
22:29 Tom_itx they wanna put a smart thermostat on my furnace for free too
22:29 rue_house I didn't care, but they seem to be faulty
22:29 Tom_itx they can kiss that idea bye bye
22:30 rue_house katsmeow-afk, report the issue to the company, hopefully everyone reports an issue and they decide to look into it
22:30 rue_house I been trying to think how to test my meter
22:30 Tom_itx i shure would
22:30 rue_house its 30% over what it should be
22:30 Tom_itx ask them to put 2 meters on it
22:30 rue_house one of thee guys at work is 50% over
22:30 Tom_itx because you doubt they are working
22:31 rue_house I can put in a personal meter in series with the hydro one
22:31 rue_house hmmmm
22:31 Tom_itx i would
22:31 rue_house I'm gonna phone and report a problem
22:31 rue_house see what they way
22:31 rue_house say
22:31 Tom_itx i would
22:31 Tom_itx don't get teh receptionist
22:32 katsmeow-afk iirc, it was like Sept 2011
22:32 Tom_itx dig deep down inside the organization
22:32 Tom_itx ot find real answers
22:32 Tom_itx agwd what's wrong with theis keybrad to night
22:35 Tom_itx did you leap for joy on this day of leap?
22:36 katsmeow-afk no
22:36 Tom_itx had to reseal the sink drain today
22:36 Tom_itx water all over the place
22:39 rue_house I heard in one state they totally screwed up the reading during the transition
22:41 Tom_itx as broke as our state is they wouldn't do anything about it unless forced
22:56 rue_house http://qaa.ath.cx/PiggyPack.html
22:56 rue_house !!! the length of the audio really shows how much data we handle with images too
22:57 rue_house I thought it woul dbe a 4 second message
22:57 rue_house not a whole 5 minute song
22:57 katsmeow-afk lossy compression
22:57 rue_house no its a png
22:58 rue_house that has audio error in it
22:58 rue_house its got a whole song in that one image
22:58 rue_house if I weren't listening to it, I woulnd't beleive it
22:58 tsmeow-afk sighs as what she said was not only dismissed, it was misunders
22:58 rue_house try me again
22:59 rue_house I'm gonn try this on other imugr images
22:59 katsmeow-afk lossy compression
22:59 rue_house where is the lossy compression kat?
23:00 rue_house http://imgur.com/gallery/WEl1x
23:00 rue_house hahaha
23:00 katsmeow-afk sure the png is a lot of bytes, but you a-d any 5 minute song and you'll get megabytes, and unlike 7-zip, winzip, etc, almost all music compression tosses out loads of data to get the file down to small sizes
23:01 katsmeow-afk how else can you get an mp3 bitstream at 15kbs to sound reasonable?
23:01 katsmeow-afk do the research on the compression, you'll see
23:01 rue_house ah, I thought you meant the image
23:03 rue_house katsmeow-afk, the file thats embe3dded in that image is 340k, + filename
23:04 katsmeow-afk ok
23:04 rue_house http://i.imgur.com/A8xJf.jpg
23:04 rue_house hehehe
23:15 katsmeow-afk freaking big wave hits ship : http://i.imgur.com/tjnUv.jpg
23:22 rue_house http://weknowmemes.com/wp-content/uploads/2011/10/i-just-feel-so-irrelephant.png <-- cheer up kat
23:22 moriarty has anybody here been involved with drafting up a technical standard by any chance?
23:23 rue_house like avian packet carriers?
23:23 moriarty exactly
23:23 moriarty :P
23:24 rue_house mmm no.
23:25 katsmeow-afk http://imgur.com/gallery/6b0jg <<== avian packet carriers
23:25 moriarty was just wondering how would a product requirements document look like where the product is a standard
23:26 rue_house http://en.wikipedia.org/wiki/IP_over_Avian_Carriers
23:26 rue_house kat ^
23:27 rue_house hahhaha I didn't know avian carriers could do ipv6!
23:27 rue_house hahahahaha
23:28 rue_house flash sticks! ahahahahahaha
23:29 rue_house collisions:0 <-- thats the advantage of avian carriers, they have built in collision avoidance
23:37 rue_house http://imgur.com/gallery/RKFAX uh, wow.
23:40 katsmeow-afk all that wood is donated or otherwise free
23:41 katsmeow-afk and it's *around* some tree, the trees don't hold it off the ground
23:41 rue_house looks like their holding a good part of it up
23:44 katsmeow-afk search for it on utube and in google
23:51 tsmeow-afk watches as IE uses up 1.3gbytes of me