| --- Sun Jan 15 2012 | 00:00 | |
| kristianpaul | azonenberg: awesome !! | 03:29 |
|---|---|---|
| azonenberg | kristianpaul: awesome about what? | 03:29 |
| azonenberg | http://siliconexposed.blogspot.com/2012/01/first-bga-board.html ? | 03:29 |
| kristianpaul | yup :) | 03:30 |
| azonenberg | thx :) | 03:30 |
| azonenberg | Next step, once the board comes back from the fab (ordered last week) is testing an FTG256 part | 03:30 |
| azonenberg | if thats successful i can move forward with my laptop design | 03:31 |
| azonenberg | Fab is currently on hold until i have a bit more $$, there are two main focuses | 03:31 |
| azonenberg | the first is improving lithography by getting a commercially made mask | 03:31 |
| azonenberg | the second is buying a furnace for thermal oxidation and dopant diffusion | 03:31 |
| kristianpaul | btw will be nice have mor info about how to get center the chip | 03:32 |
| azonenberg | I basically stuck it down and jiggled under the microscope | 03:32 |
| azonenberg | Figuring out how to improve yields is something i am thinking about | 03:32 |
| kristianpaul | i friend of mine tried you owen aprouch with an avr32 chip and give up after the 5 atempt | 03:32 |
| kristianpaul | but 3 is not bad i think :) | 03:32 |
| azonenberg | One possibility is to draw an X in the silkscreen and line up the corners | 03:33 |
| kristianpaul | ah yes | 03:33 |
| azonenberg | another is to have crosshairs of some sort | 03:33 |
| kristianpaul | draw^ | 03:33 |
| azonenberg | And what was the pitch on the avr32? | 03:33 |
| kristianpaul | dont remenber now, similiar to spartan-6 i remenber | 03:33 |
| azonenberg | thats a huge difference | 03:33 |
| azonenberg | s6 comes in packages ranging form 0.5 to 1mm | 03:34 |
| kristianpaul | i know ;) | 03:34 |
| azonenberg | 0.5, 0.8, 1.0 i think | 03:34 |
| azonenberg | PIC32s are mostly TQFP and QFN | 03:34 |
| azonenberg | the one BGA package is 0.8 | 03:34 |
| azonenberg | which is too fine for my fab's design rules in a full-array package (i cant fit vias between the balls) | 03:34 |
| azonenberg | But 1mm i can | 03:34 |
| azonenberg | In any case, i will be actively pursuing such things for a while because i have several designs in the pipe that need BGAs | 03:34 |
| azonenberg | and i'll be trying to write more on the blog | 03:34 |
| azonenberg | it was originally just reverse engineering but is now basically anything that pushes the limits of hobbyist electronics | 03:35 |
| kristianpaul | pushes, yeah ! | 03:35 |
| azonenberg | lol | 03:35 |
| azonenberg | you know me that well, lol... i love breaking down barriers and pushing boundaries | 03:36 |
| azonenberg | especially if people say something cant be done | 03:36 |
| kristianpaul | i just pinged a guy said i cant be done | 03:37 |
| kristianpaul | they guy made this http://wikisend.com/download/153454/USB-WideBand-RX%20-%20PCB.pdf | 03:41 |
| kristianpaul | from osmo-sdr | 03:41 |
| kristianpaul | ther is a way to electrically test align before rework? | 03:44 |
| kristianpaul | array will be nice to see ;) | 03:45 |
| Helldesk | http://ee380.stanford.edu/cgi-bin/videologger.php?target=111109-ee380-300.asx Stanford memristor lecture, manufacturing methods around the hour mark | 04:37 |
| Helldesk | downloadable copy: http://www.megaupload.com/?d=41TSSZUM | 04:37 |
| Helldesk | pretty cool stuff, memristor effect starts to dominate more as the structure shrinks to the nano scale, and the effect has been seen for a long time, it just wasn't understood that it was memristance | 04:41 |
| Helldesk | and you can potentially replace an equivalent circuit of a dozen transistors with just one memristor | 04:42 |
| Helldesk | and they haven't reached its switching speed limit yet | 04:43 |
| Helldesk | oh wow, they are immune to ionizing radiation | 05:37 |
| Helldesk | non-volatile data storage and immensely fast computation | 05:44 |
| --- Mon Jan 16 2012 | 00:00 | |
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