| --- Sat Oct 27 2012 | 00:00 | |
| Sync | blargh | 14:07 |
|---|---|---|
| Sync | NaCl windows suck. | 14:07 |
| Sync | and yay free CF parts | 15:53 |
| Sync | bah. everything is cursted in salt | 20:31 |
| Sync | *raises fist* | 20:31 |
| azonenberg | NaCl windows? | 20:35 |
| Sync | yes | 20:35 |
| azonenberg | for what | 20:35 |
| Sync | some kind of spectrometer | 20:35 |
| azonenberg | o_O | 20:35 |
| azonenberg | Sounds annoying | 20:35 |
| Sync | yeah | 20:35 |
| Sync | made a fucking mess | 20:35 |
| Sync | and killed the gold mirrors | 20:35 |
| azonenberg | In normal use was the instrument kept in an anhydrous environment? | 20:35 |
| Sync | probably | 20:36 |
| azonenberg | or sealed and purged? | 20:36 |
| Sync | or just moisture controlled enough so that it was no problem | 20:36 |
| azonenberg | yeah, i just mean in normal room area in a lab environment | 20:36 |
| azonenberg | there is some H2O | 20:36 |
| azonenberg | and we all know how hygroscopic NaCl is... | 20:36 |
| Sync | I'm not really sure how you'd used that thing | 20:36 |
| Sync | it has no option to mount it | 20:36 |
| Sync | but it had two slightly angeled NaCl windows | 20:37 |
| Sync | with a nacl beamsplitter in it | 20:37 |
| Sync | and another one mounted on a galvo | 20:37 |
| Sync | and two concave gold coated mirrors on top and bottom | 20:37 |
| Sync | but it had a triax CF feedthrough, CF thermovac tube and needle valve | 20:39 |
| Sync | and it says Spectra-Physics | 20:59 |
| Sync | haha I just realized what the small conglomerate of pumps in the corner is worth | 21:01 |
| azonenberg | lol what/ | 21:02 |
| azonenberg | what? * | 21:02 |
| azonenberg | pleast dont say you have half a million dollars of turbopumps sitting around like trash | 21:03 |
| Sync | well | 21:04 |
| Sync | you'd get a nice car for the price you'd pay if you would get them new | 21:04 |
| azonenberg | Lol | 21:04 |
| azonenberg | good turbopumps are not cheap | 21:04 |
| azonenberg | make that "turbopumps in general are not cheap" lol | 21:05 |
| Sync | the turbo is not the most expensive one | 21:07 |
| Sync | the XDS10 is around 5k new | 21:07 |
| azonenberg | what species is that? | 21:09 |
| azonenberg | dont know the model | 21:09 |
| Sync | it is a dry scroll pump | 21:12 |
| azonenberg | oh nice | 21:12 |
| Sync | bah | 21:14 |
| Sync | I need to stop buying stuff. | 21:14 |
| azonenberg | lol | 21:14 |
| Sync | for real | 21:15 |
| azonenberg | i need to stop designing board C | 21:15 |
| azonenberg | before i've even assembled board B | 21:15 |
| Sync | yeah | 21:15 |
| Sync | I know the problem | 21:15 |
| Sync | but I guess I have enough pumps now | 21:15 |
| Sync | one for everything I could need | 21:15 |
| azonenberg | My problem is that A is running near capacity | 21:15 |
| azonenberg | and I need C because B was just a test | 21:16 |
| Sync | o.0 | 21:16 |
| azonenberg | But i can't finish designing C until i assemble B and get data from it :P | 21:16 |
| Sync | deadlock. | 21:16 |
| azonenberg | It's not a deadlock, the solution is to assemble and test B first | 21:17 |
| Sync | I need to do some work on my glass - metal seals | 21:17 |
| azonenberg | then finish designing C with what i find | 21:17 |
| azonenberg | But that means grading this massive pile of exams first :p | 21:17 |
| Sync | yeah | 21:17 |
| Sync | same problem here | 21:17 |
| Sync | but I'm currently less than ever motivated to learn | 21:17 |
| azonenberg | i hate class, lab is so much more fun | 21:18 |
| Sync | oh F | 21:18 |
| Sync | that reminds me | 21:18 |
| Sync | I need to kick my lab partners in their asses | 21:18 |
| Action: azonenberg sees grade of 30% on homework 4 in numerical computing | 21:19 | |
| azonenberg | this class is killing me but its too late to drop | 21:19 |
| Sync | I think I'll leave maths 3 maths 3 this semester | 21:19 |
| azonenberg | i simply have no interest in this class | 21:19 |
| Sync | ^ | 21:20 |
| azonenberg | i have not touched a floating-point number outside that class in like a year | 21:20 |
| azonenberg | it's of no use to me | 21:20 |
| azonenberg | all of my code is integer based | 21:20 |
| Sync | I usually make generous use of floats | 21:21 |
| Sync | but just because I'm a lazy coder | 21:22 |
| azonenberg | http://colossus.cs.rpi.edu/pictures/2012/August/8-18-2012%20-%20dev%20setup/S7302890.JPG | 21:22 |
| azonenberg | All of the conversion from binary to decimal to run that display | 21:22 |
| azonenberg | is done entirely in fixed point with no loss of precision | 21:22 |
| azonenberg | at one point i multiply by 1.25 | 21:22 |
| azonenberg | so to do that i simply do X + (X << 2) and declare the radix point to have moved two bits to the right | 21:23 |
| azonenberg | just integer arithmetic and bitshifts | 21:23 |
| Sync | yeah I am too lazy to think about that. | 21:24 |
| Sync | :D | 21:24 |
| azonenberg | this is hardware, though | 21:24 |
| azonenberg | a FPU uses a lot of gates | 21:24 |
| azonenberg | but a bitshift by a constant is just a couple of wires | 21:25 |
| azonenberg | and addition is easy | 21:25 |
| azonenberg | integer addition that is | 21:25 |
| azonenberg | compared to a floating point multiplier... | 21:25 |
| Sync | yean that is true on fpgas | 21:26 |
| azonenberg | i dont want to even think about implementing IEEE754 any time soon | 21:26 |
| azonenberg | i will do so at some point because i will need to add it to my CPU eventually | 21:26 |
| azonenberg | and because I dont want to use the xilinx IP cores since they arent open source | 21:27 |
| azonenberg | (though they are free as in beer) | 21:27 |
| Sync | I could not wrap my head around verilog when I had to use it | 21:28 |
| azonenberg | lol it seems like the most natural thing in the world to me | 21:28 |
| azonenberg | when i see HDL i immediately think of it synthesizing into muxes and gates | 21:28 |
| azonenberg | and it just makes sense | 21:28 |
| Sync | that was not the issue | 21:29 |
| Sync | but making it synthesize somehow never worked | 21:29 |
| Sync | just simulated just fine | 21:29 |
| azonenberg | you mean your code didnt compile or you couldnt figure out how to write it? | 21:29 |
| azonenberg | oh | 21:29 |
| azonenberg | were you maybe using simulation-only constructs like delays by unit time? | 21:29 |
| azonenberg | there's no physical way to say "wait 5ns and then set this high" | 21:30 |
| Sync | nope | 21:31 |
| azonenberg | Do you remember the synthesis problem> | 21:31 |
| azonenberg | ? | 21:31 |
| Sync | the next issue was that I did not manage to connect modules | 21:31 |
| Sync | not really, that was in 11th grade in HS | 21:31 |
| azonenberg | Lol oh, you started younger than me | 21:32 |
| azonenberg | when i was that age i was doing x86 asm | 21:32 |
| azonenberg | only got into FPGAs... must have been the summer between junior and senior year of college | 21:32 |
| azonenberg | or no | 21:32 |
| azonenberg | it was after senior year and before starting grad school i think | 21:32 |
| Sync | I'm not much of a software guy | 21:32 |
| Sync | I do enjoy confusing people with analog wonkeyness | 21:33 |
| azonenberg | Analog stuff scares me, i live in the land of 1s and 0s lol | 21:33 |
| azonenberg | I'm doing better in my non-major class than my major class this semester | 21:35 |
| azonenberg | Electron Microscopy of Materials i'm currently in a streak of four perfect lab grades in a row out of five (lost two points on the first) | 21:36 |
| Sync | lab is not graded here | 21:36 |
| azonenberg | lab reports i mean | 21:36 |
| azonenberg | but i'm consistently B-range in my math/CS class | 21:36 |
| azonenberg | because, quite honestly, i don't care | 21:36 |
| Sync | we do not write lab reports | 21:37 |
| azonenberg | Which is a problem considering that it's a required class :P | 21:37 |
| Sync | yeah I know the problem all too well | 21:40 |
| Sync | wee the galvo is neat :) | 21:43 |
| --- Sun Oct 28 2012 | 00:00 | |
Generated by irclog2html.py 2.9.2 by Marius Gedminas - find it at mg.pov.lt!
