| 00:04.57 | *** join/#tacobeam zak (~user@navi.cs.colorado.edu) |
| 00:05.18 | zak | purple_cow: i saw the table in lurgy's room, that is a neat table, would you mind posting the link again? |
| 00:05.31 | purple_cow | http://www.theodoregray.com/TriangleTable/index.html <-- i want one |
| 00:05.43 | zak | danke |
| 00:06.06 | *** join/#tacobeam laodamas (~laodamas@c-67-166-53-18.client.comcast.net) |
| 00:06.24 | scanline | oh no! |
| 00:07.36 | lurgy | who let purple_cow escape? |
| 00:08.01 | scanline | must have been darth_mall |
| 00:09.13 | zak | to bad he doesn't sell that table :P |
| 00:09.16 | zak | but it is neat |
| 00:12.55 | scanline | :) |
| 00:29.45 | scanline | http://www.element-collection.com/html/installations.html <-- really cool |
| 00:36.19 | darth_mall | that was a good production |
| 00:37.03 | lurgy | zak: rich just called. apparently you're supposed to show up in ITLL 135 |
| 00:40.19 | darth_mall | hi lurgy |
| 00:40.21 | darth_mall | you're a moose |
| 00:42.35 | lurgy | uh oh |
| 00:44.41 | file | lurgy: you're a moose |
| 00:45.32 | lurgy | so it seems |
| 00:50.03 | darth_mall | or I could watch Amadeus |
| 00:52.19 | lurgy | pff |
| 00:52.26 | lurgy | hmm, amadeus |
| 00:52.29 | lurgy | tempting.. |
| 00:52.43 | lurgy | darth_mall: you also need to watch Fatal Instinct |
| 00:52.54 | lurgy | and Dr Zhivago |
| 00:53.21 | lurgy | and Eternal Sunshine of the Spotless Mind |
| 00:53.22 | darth_mall | ooh... we have Dr. Zhivago |
| 00:53.28 | darth_mall | we have Eternal Sunshine? |
| 00:53.36 | lurgy | yep |
| 00:53.40 | darth_mall | wow |
| 00:53.44 | darth_mall | didn't realize we had that |
| 00:53.52 | darth_mall | lurgy: do you wanna watch any of those in a bit |
| 00:54.29 | lurgy | ooh, good bye lenin should be done in 6 or 7 hours too |
| 00:54.31 | lurgy | ok |
| 00:54.44 | darth_mall | lurgy: if you want to we could watch a movie in 30-60 mins |
| 00:55.03 | darth_mall | but I should get a little work done first ;) |
| 00:55.08 | lurgy | yay little |
| 00:55.25 | darth_mall | mk |
| 00:55.31 | lurgy | Dr Zhivago is kind of long |
| 00:55.35 | lurgy | dunno if that factors in somehow |
| 00:55.47 | lurgy | Amadeus it is, then |
| 00:55.51 | darth_mall | lurgy: how long is "kind of long" |
| 00:55.56 | lurgy | 3 hours 11 mins |
| 00:56.09 | darth_mall | hmm... yeah, a bit longer than I was planning |
| 00:56.14 | lurgy | :) |
| 00:56.26 | lurgy | including the 2001-esque overture stuff, and credits and whatnot |
| 00:57.03 | darth_mall | still no word for capt. Avery... |
| 00:57.03 | darth_mall | lurgy: I'm pretty sure it's not more than 2 hours |
| 00:57.36 | lurgy | 2 hours 40 minutes |
| 00:57.37 | lurgy | yow |
| 00:57.44 | darth_mall | wow... hmmm... |
| 00:57.50 | darth_mall | I didn't remember it being that long |
| 00:58.00 | lurgy | :) |
| 00:58.06 | darth_mall | that makes me a little more tempted to hit the video station... |
| 00:58.08 | lurgy | we ended up with a lot of long movies i guess |
| 00:58.17 | lurgy | the other option is drunken master |
| 00:58.20 | darth_mall | lurgy: that's because good movies have plot ;) |
| 00:58.44 | lurgy | heh |
| 00:58.52 | lurgy | hmm |
| 00:58.59 | lurgy | Blue Velvet should be done in an hour or so |
| 00:59.35 | darth_mall | I know it's a big name |
| 00:59.43 | lurgy | hmm, David Lynch |
| 01:00.35 | darth_mall | which is not to say it was really good... just that it was a good deal better than expected |
| 01:00.41 | lurgy | i assume the 2003 "Open Range"? |
| 01:00.45 | darth_mall | yeah |
| 01:00.46 | darth_mall | I know |
| 01:00.49 | darth_mall | it's Kevin Costner |
| 01:00.54 | lurgy | gotcha |
| 01:00.56 | darth_mall | but... I've heard good things |
| 01:01.07 | darth_mall | and for some reason I got in the mood for it today |
| 01:01.09 | lurgy | well, there was a 1927 one was all |
| 01:01.20 | darth_mall | dunno if I wanna take the time to hit the video station or not, though |
| 01:01.49 | lurgy | eck, blue velvet is 2 hours as well |
| 01:02.25 | darth_mall | 2 hours doesn't bother me, personally |
| 01:02.37 | lurgy | okeydoke |
| 01:02.43 | darth_mall | when it starts getting closer to 3 is when I start to think it'd be better to wait for the weekend |
| 01:03.04 | *** join/#tacobeam Laser_D|School (~rieber@navi.cs.colorado.edu) |
| 01:03.11 | Laser_D|School | Anyone seen zak? |
| 01:03.36 | lurgy | she just went into the shower or something i think |
| 01:03.38 | darth_mall | ewww... Dennis Hopper |
| 01:03.43 | lurgy | or is doing something in there for 1/2 hour or so |
| 01:03.50 | Laser_D|School | Thank you lurgy |
| 01:03.57 | darth_mall | Laser_D|School: dance for me |
| 01:04.12 | Laser_D|School | ^-^-!@# |
| 01:04.21 | lurgy | hey look it's Laser_D|School dancing |
| 01:04.22 | darth_mall | that's not very dancy |
| 01:04.27 | lurgy | or swearing |
| 01:04.29 | lurgy | i'm not sure |
| 01:04.32 | Laser_D|School | Dancing |
| 01:04.33 | darth_mall | I think swearing |
| 01:04.36 | Laser_D|School | Just not so good |
| 01:04.37 | darth_mall | which is unacceptable |
| 01:04.41 | lurgy | heh |
| 01:05.23 | lurgy | darth_mall: i'd also be willing to see fatal instinct again, though i'm not sure you're in the mood for it |
| 01:06.23 | lurgy | speakin' o' long movies, i should check suprnova for lawrence of arabia.. that was a perdy piece o' cinema |
| 01:06.49 | scanline | geez this board got complicated |
| 01:06.57 | scanline | compared to what I was expecting at least |
| 01:07.02 | lurgy | yay complicated |
| 01:07.20 | darth_mall | oooh... I loves Lawrence of Arabia |
| 01:07.46 | darth_mall | Lawrence of Arabia, Amadeus and Gandhi all remind me of my mom ^^ |
| 01:07.54 | darth_mall | I recall as a child thinking those were her favorite movies |
| 01:08.03 | lurgy | hehe |
| 01:08.06 | darth_mall | ... because they were, I suppose |
| 01:08.17 | darth_mall | Gandhi is great |
| 01:08.20 | lurgy | yep :) |
| 01:08.27 | lurgy | almost as good as Crocodile Ghandi |
| 01:08.32 | darth_mall | it's hard to believe someone of Ben Kingsley's talent could be in Species II |
| 01:08.33 | lurgy | ^_^ |
| 01:08.59 | lurgy | yeah |
| 01:09.15 | lurgy | also hard to believe that one professor in "The Battle of the Worlds" was in Casablanca |
| 01:09.25 | darth_mall | I saw a bio of Gandhi at B&N once, and at first I wondered why they'd put Ben Kingsley's picture on the cover ^^ |
| 01:09.43 | lurgy | especially when he opens his mouth and says "I've got one advantage over all of you.. CALCULUS!!" |
| 01:10.55 | darth_mall | lurgy: ^^ |
| 01:11.21 | lurgy | hehe |
| 01:11.22 | lurgy | mm |
| 01:11.23 | lurgy | mayonaise |
| 01:12.56 | darth_mall | for some reason that calculus line always brings to mind the mayonaise one in my brain |
| 01:13.05 | lurgy | hehe |
| 01:13.09 | lurgy | well they make about as much sense |
| 01:13.11 | darth_mall | yay! almost done constructing this matrix |
| 01:13.17 | lurgy | yay |
| 01:13.33 | darth_mall | lurgy: true... plus I think I heard both of them from you guys during the same conversation, the first time I heard them |
| 01:13.56 | lurgy | heh |
| 01:14.12 | scanline | Mozilla Fireoyster |
| 01:14.22 | lurgy | Volvo Microcow |
| 01:14.54 | scanline | hehe |
| 01:15.21 | darth_mall | Habib's Discount Turbocanine |
| 01:16.08 | darth_mall | hmm... sudden urge to play guitar... |
| 01:16.13 | lurgy | i feel like logic lecture has fallen off the face of the earth |
| 01:16.28 | lurgy | we haven't really done anything for more than a week |
| 01:16.40 | lurgy | since a week before last monday |
| 01:16.49 | lurgy | at least not with capt. avery |
| 01:17.05 | darth_mall | yup |
| 01:17.17 | darth_mall | he disappeared pretty abruptly |
| 01:18.29 | lurgy | hurray for cake putting out another quality album :) |
| 01:18.42 | darth_mall | =D |
| 01:18.52 | lurgy | hmm |
| 01:18.54 | darth_mall | I can't put my finger on it, but there is something that is so great about that album |
| 01:19.08 | darth_mall | I think I like that one more than any other single album they did |
| 01:19.17 | darth_mall | although my favorite song is still Stickshifts and Safetbelts |
| 01:19.18 | lurgy | =) |
| 01:19.22 | lurgy | hehe |
| 01:19.33 | darth_mall | but as an album I'm inclined to say that Pressure Chief is my favorite |
| 01:20.00 | darth_mall | plus I can spell!... s/Safet/Safety/ |
| 01:20.09 | lurgy | yay safetbelts |
| 01:20.14 | darth_mall | mmhmm |
| 01:20.21 | darth_mall | they're cheaper, marginally less effective ;) |
| 01:20.33 | lurgy | heh |
| 01:20.37 | lurgy | yep |
| 01:20.40 | lurgy | they keep everybody saf |
| 01:21.51 | lurgy | did we decide what we're gonna watch? |
| 01:22.59 | darth_mall | well... I could go to the video station and get Open Range... oh wait, no cash |
| 01:23.02 | darth_mall | Blue Velvet? |
| 01:24.13 | lurgy | okeydoke |
| 01:25.01 | lurgy | high time i saw a david lynch thingy anyways |
| 01:25.11 | lurgy | 15 minutes left now on that |
| 01:25.18 | darth_mall | hehe |
| 01:25.19 | darth_mall | cool |
| 01:25.55 | lurgy | yay hopefully |
| 01:29.43 | darth_mall | neat... it looks like I've successfully built this matrix... |
| 01:31.06 | darth_mall | f |
| 01:32.21 | scanline | grr |
| 01:32.34 | scanline | so on tantalum surface mount capacitors, the stripe is actually the positive side |
| 01:32.41 | lurgy | heh |
| 01:32.49 | scanline | completely backwards from diodes or other types of capacitors |
| 01:33.36 | scanline | though it's nice that, at least at the voltages they're being exposed to, they have been working even when reverse biased :P |
| 01:43.27 | lurgy | bah, why are there no french region 1 DVDs |
| 01:43.35 | lurgy | ..of tintin |
| 01:44.00 | lurgy | the Quebecois should be put off |
| 01:45.14 | darth_mall | heh |
| 01:45.17 | darth_mall | lurgy: I'm ready wheneve ryou am |
| 01:45.19 | lurgy | the only tintin video torrents i've found are in dutch i think |
| 01:45.24 | lurgy | darth_mall: not quite downloaded yet |
| 01:45.31 | lurgy | <5 minutes now though |
| 01:45.55 | darth_mall | mk |
| 01:46.02 | lurgy | hmm |
| 01:46.12 | lurgy | oh my.. |
| 01:46.14 | lurgy | Alf_Season1_Disk4__1986__Full_DVDr_Quality_Broth_RG.torrent |
| 01:46.25 | lurgy | Alf is on DVD but tintin isn't? |
| 01:46.28 | lurgy | what has the world come to |
| 01:47.21 | lurgy | ooh and a torrent for "Around the World in 80 Days"... in spanish |
| 01:48.07 | darth_mall | you should get alf |
| 01:48.09 | darth_mall | alf is funny |
| 01:48.15 | lurgy | heh |
| 01:48.15 | lurgy | maybe |
| 01:48.22 | lurgy | but it's not high on my list of priorities atm :P |
| 02:37.06 | CIA-10 | spacegrant: 03dowty * r366 10dino/trunk/hardware/ (5 files in 2 dirs): The comm board should have a complete schematic now, with all parts placed. Looks like this board is going to end up at 2.5 by 2 inches. |
| 02:59.09 | lurgy | don't touch me! or i'll kill you!! |
| 03:05.54 | scanline | wow.. actually, the autorouter is doing an amazing job considering how packed this board is |
| 03:05.57 | scanline | it's just taking a while |
| 03:07.04 | scanline | http://navi.cx/~micah/comm-usb-interface-1.png |
| 03:07.14 | scanline | not too bad for a first cut at routing |
| 03:08.00 | scanline | soooo many vias |
| 03:12.24 | KeyserSoze | damn, that's pretty dense |
| 03:15.16 | scanline | for a 2-layer board :) |
| 03:15.57 | scanline | it's quite close to routing completely.. just need to tweak the component placement, maybe cut down on the number of extra GPIOs I bring out to headers |
| 03:16.14 | KeyserSoze | did you place all the components manually? |
| 03:16.18 | scanline | yeah |
| 03:17.17 | KeyserSoze | what software is that? |
| 03:17.20 | scanline | there aren't that many components. Just a microprocessor, some 5V/3.3V buffers, voltage regulator, a few transistors, EEPROM, and a handful of resistors |
| 03:17.22 | scanline | protel DXP |
| 03:19.13 | scanline | it's a cute little project- a USB interface for two ham radio modems originally designed for a parallel interface |
| 03:19.49 | scanline | I get to design the circuit, lay out the board, write firmware for the microcontroller, and write a kernel module for it :) |
| 03:20.02 | KeyserSoze | cool |
| 03:20.23 | KeyserSoze | what microcontroller? |
| 03:20.26 | scanline | TUSB3210 |
| 03:20.39 | scanline | an 8051 with built-in bootloader ROM and USB interface |
| 03:21.07 | scanline | it'll be my first time using it, but I've used the quite similar TUSB3410 for a couple things |
| 03:21.25 | KeyserSoze | C or assembly? |
| 03:21.28 | scanline | C |
| 03:21.38 | KeyserSoze | gcc? |
| 03:21.38 | scanline | I wrote a USB library in C for the '3410 that I'll be porting |
| 03:21.40 | scanline | sdcc |
| 03:22.22 | scanline | it's nice having the built-in bootloader- you can either store firmware in an EEPROM, or just send it over USB every time you apply power |
| 03:22.58 | scanline | I doubt we'd use the EEPROM for flight- it's just another piece of nonvolatile memory that might get corrupted |
| 03:23.35 | KeyserSoze | so you're gonna reload over USB every time it restarts? |
| 03:23.40 | scanline | yeah |
| 03:24.10 | scanline | it's nice to keep as much of the code possible in the flight computer rather than scattered around the satellite |
| 03:24.49 | scanline | it's not like the reload takes long- the firmware can't be larger than 8KB, and it's full-speed USB |
| 03:26.40 | KeyserSoze | are you doing tx and rx, or just tx? |
| 03:26.58 | scanline | each modem can do tx or rx, half-duplex. This interface is using two modems for full-duplex |
| 03:27.18 | KeyserSoze | cool |
| 03:27.31 | KeyserSoze | are you using the same hardware on the ground as in the sat? |
| 03:27.35 | scanline | hopefully |
| 03:27.53 | scanline | for our older satellites we've been doing PPP over AX.25, using some RS-232 TNCs |
| 03:28.12 | scanline | on the satellite, we're now using TCP/IP over AX.25, using the linux ham radio drivers |
| 03:28.16 | scanline | I'd like to have the same thing on the ground |
| 03:28.38 | scanline | I doubt it's efficient or easy to do TCP/IP over AX.25 using the serial TNCs we have now |
| 03:29.11 | scanline | PPP has been nothing but trouble, for a lot of good reasons- I'm hoping TCP/IP over AX.25 will be a lot nicer |
| 03:29.31 | scanline | all this modem hacking is making me want to get a ham radio license so I can play with this stuff on my own too :) |
| 03:29.42 | KeyserSoze | tcp/ip over ax.25 on usb converted to parallel? |
| 03:29.52 | scanline | it's not really parallel |
| 03:29.58 | scanline | but basically, yeah |
| 03:30.08 | scanline | the modem was using a PC parallel port as a synchronous serial interface |
| 03:30.36 | *** join/#tacobeam BlackIrisDancer (~BID@h-66-166-132-131.dnvtco56.covad.net) |
| 03:30.47 | scanline | the modem generates interrupts every 16 bit periods, the PC shifts 16 bits in or out to a register on the device |
| 03:31.03 | scanline | so it only needs 6 signals on the parallel port |
| 03:31.49 | KeyserSoze | what hardware does the ax.25 kernel driver usually work with? |
| 03:32.16 | scanline | it supports this parallel port modem unmodified, and a few other serial/parallel/pci modems |
| 03:32.29 | KeyserSoze | are modyfing it more to work with your usb interface? |
| 03:32.58 | KeyserSoze | s/are/are you/ |
| 03:33.04 | scanline | yeah |
| 03:33.16 | scanline | a lot of what was implemented in the kernel module will end up being done in the microcontroller |
| 03:33.33 | scanline | but by far the bulk of the work is done by a shared hdlc module that I won't have to touch at all |
| 03:35.04 | scanline | the microcontroller will do scrambling/descrambling and provide a pair of USB bulk endpoints for receiving and transmitting. The kernel module I'll be writing will mostly just glue that USB protocol onto the hdlc module |
| 03:35.20 | scanline | then the hdlc module does lots-o-magic and gives me a network device :) |
| 03:35.38 | KeyserSoze | ooooh, that's very cool |
| 03:36.07 | scanline | yep :) |
| 03:36.20 | scanline | hopefully soon I'll have two of these interface boards with a total of four modems talking to each other |
| 03:36.43 | purple_cow | eww & hdlc |
| 03:36.52 | purple_cow | i mean, yeah, every network protocol out there is based on it |
| 03:36.53 | purple_cow | but still |
| 03:36.53 | purple_cow | eww |
| 03:36.56 | scanline | ha |
| 03:37.03 | scanline | well, I don't have to touch that :) |
| 03:37.38 | KeyserSoze | can you programatically change the carrier frequency? |
| 03:37.49 | scanline | I'm not sure, that's up to the radios |
| 03:38.11 | scanline | I know they have an RS-232 interface that we'll be using to set them up, so I'd assume you could set all the frequencies through that |
| 03:39.49 | scanline | I just know it's full-duplex, it uses a pair of modified Kenwood handheld radios, and it's somewhere around 450 MHz |
| 03:40.59 | KeyserSoze | i assume you guys have a license to put out more power than standard ham stuff |
| 03:41.25 | scanline | we will by mid-november :) |
| 03:41.55 | file | mmm more power |
| 03:41.58 | scanline | I'm not sure the radios are all that powerful, we just have a really big antenna on the ground |
| 03:42.09 | scanline | but I know they're doing some kind of frequency allocation paperwork |
| 03:45.01 | purple_cow | scanline: so i want to choose the phase of the first peak? |
| 03:45.07 | scanline | purple_cow: yep |
| 03:45.41 | scanline | purple_cow: and actually, you can probably use that phase-vs-signal plot to pin down the resonant frequency of the transmitter, and calculate the right transmitter period :) |
| 03:46.35 | purple_cow | you mean create a period-vs-signal plot? |
| 03:46.43 | scanline | the phase you're dealing with (after the 256-x thing) is in CPU cycles. The period is also in CPU cycles, but there's an odd offset to deal with |
| 03:46.48 | scanline | you have that already |
| 03:46.54 | scanline | er |
| 03:47.03 | scanline | nah, I meant phase |
| 03:47.10 | scanline | but it's easier to do it with a period-vs-signal plot :) |
| 03:47.59 | scanline | I was just thinking that instead of doing a second sweep through periods, you already have all the information you need after sweeping through phases |
| 03:51.05 | purple_cow | it's not exactly as if it takes a long time to do a sweep :) |
| 03:51.11 | scanline | yeah |
| 03:51.34 | scanline | also, with the current hardware, you really can't pin down the resonant frequency that accurately |
| 03:51.45 | scanline | the period timer is accurate down to single CPU cycles, but that isn't really that great |
| 03:53.56 | purple_cow | heh, the 227 value you had for period is the peak resonance |
| 03:57.49 | scanline | makes sense, that's the exact same hardware it was calibrated with :) |
| 03:58.30 | scanline | the scope's capacitance must have just been throwing it off that frequency by quite a ways |
