| kristianpaul | Regarding Software Freedom: the caveat regarding this CPU is that it requires ARM-proprietary libraries for the 3D Graphics (as does virtually every single embedded SoC on the planet with the almost exclusive sole exception of the Ingenic jz4760 | 01:34 |
|---|---|---|
| kristianpaul | he :) | 01:34 |
| pabs3 | kristianpaul: context? | 02:15 |
| wpwrak | pabs3: i'm wondering if the answer to that is a string or a boolean :) | 02:41 |
| DocScrutinizer | hmm, GordonFreeman ? we got a freemangordon in #maemo-ssu :-D | 03:34 |
| GordonFreeman | well i reserve the right to choose another random nick at any random time ;> | 03:35 |
| GordonFreeman | http://imageshack.us/photo/my-images/151/20111218043745.jpg/ http://imageshack.us/photo/my-images/208/20111218043755.jpg/ http://imageshack.us/photo/my-images/835/20111218043841.jpg/ http://imageshack.us/photo/my-images/221/20111218044031q.jpg/ http://imageshack.us/photo/my-images/694/20111218043933.jpg/ http://imageshack.us/photo/my-images/198/20111218044058.jpg/ http://imageshack.us/photo/my-images/401/20111218044341.jpg/ http://imagesh | 04:13 |
| GordonFreeman | ack.us/photo/my-images/811/20111218044511.jpg/ | 04:13 |
| GordonFreeman | pics of my hacked dvd drive | 04:13 |
| GordonFreeman | so, i have removed the unnecessary stuff from the mainboard with a screwdriver, then cut some track on pcb, and reconnected the motor controller ic with cat-5e wires, and added a potentiometer for analog input control for the ic, and it works off a single 12V supply because i added a 7805 stab ic to generate 5V for it | 04:20 |
| wpwrak | GordonFreeman: if you can also figure out how to move the laser, and how to control it, then you'd have a nice photoplotter | 06:07 |
| wpwrak | we one discussed this as an approach for direct writing of chip structures. preferably with a blue ray, though, for the color of the laser (closer to the peak sensitivity of the photo emulsion) | 06:08 |
| wpwrak | the idea being that you have two dvd/blue ray devices in an X/Y arrangement, one moving the workpiece/table, the other moving the laser | 06:10 |
| GordonFreeman | i don't do lol | 06:15 |
| GordonFreeman | i can do photolithography btw | 06:16 |
| wpwrak | (lol) mmh ? | 06:16 |
| GordonFreeman | well, make a film, and shine lighht through it. | 06:17 |
| wpwrak | by the way, this has a serious background. have you seen this ? http://colossus.cs.rpi.edu/~azonenberg/papers/litho1.pdf | 06:18 |
| GordonFreeman | actually i'm building 3 axis cnc milling machine | 06:18 |
| wpwrak | with a direct laser writer, such a thing would be a lot easier | 06:18 |
| GordonFreeman | i don't think so | 06:18 |
| GordonFreeman | also it would take much more time | 06:19 |
| wpwrak | of course. the greater the hack, the more time :-) | 06:20 |
| GordonFreeman | :) i like eficient hacks | 06:20 |
| wpwrak | it would still be very efficient. just a lot more magnificient ;-) | 06:21 |
| GordonFreeman | ok i have seen blu-ray laser videos on youtube | 06:21 |
| GordonFreeman | must be fun shooting through 10 dvd cases with it | 06:21 |
| wpwrak | ;-) | 06:22 |
| GordonFreeman | but i see no real use of it yet.... too little power. i cannot cut steel with it | 06:22 |
| GordonFreeman | nor pcbbbs | 06:22 |
| GordonFreeman | its only eye hazard | 06:23 |
| akiwiguy | Several of them concentrated on one spot could do some damage to a pcb methinks | 06:24 |
| GordonFreeman | no. | 06:25 |
| GordonFreeman | how would you combine the laser beams into one line ? that is preferrably the possible thinnest line | 06:26 |
| GordonFreeman | its silly to just aim $1000+ lasers onto an approximate spot | 06:27 |
| GordonFreeman | btw you need insane amount of powwer to vaporize the copper with any laser that will be $10k$+ | 06:28 |
| wpwrak | you couldn't cut pcbs ... but you could make your own chips :) | 06:48 |
| kristianpaul | pabs3: yes (boolen), sorry source here http://rhombus-tech.net/allwinner_a10/orders/ | 13:46 |
| kristianpaul | wpwrak: quite boolean indeed ;) | 13:46 |
| kristianpaul | Just cath my atention they keep comparing with ingenic products in other pages... | 13:46 |
| viric | wpwrak: do you still use kicad? | 14:23 |
| wpwrak | viric: yes, of course. what else is there ? :) | 14:37 |
| viric | I'm updating the package in my distro | 14:37 |
| viric | to the sources of july 2011 | 14:37 |
| viric | do you use the latest bazaar checkout? | 14:37 |
| wpwrak | no, we're at an older version. maybe a year old. we (qi-hw) have a bunch of patches that are essential for automating the workflow, and afaik they haven't been forward-ported yet | 14:38 |
| viric | ok | 14:39 |
| kristianpaul | argh, any idea how to hold well a wire, seems silicone is good in long term solution just look this gap between blue and purple cable http://kristianpaul.org/~paul/tmp/one_broke.jpg | 14:41 |
| kristianpaul | s/is/is not | 14:43 |
| viric | hm I've a resistor brown/black/gold/gold | 14:44 |
| viric | what is that? | 14:44 |
| viric | 1ohm? | 14:45 |
| kristianpaul | yes | 14:46 |
| kristianpaul | well, almost still +/- 5% of tolerance | 14:47 |
| viric | aha | 14:47 |
| wpwrak | kristianpaul: (pic) cephalopod son of The Blob ? | 14:54 |
| kristianpaul | wpwrak: horrible yes, but it was holding clock from sige receiver to milkymsit :,) | 14:56 |
| blogic | wpwrak: ping | 16:16 |
| blogic | wpwrak: i am playing with kicad atm | 16:16 |
| wpwrak | *GONG* | 16:16 |
| blogic | i just opened a .lib file and saw its ascii | 16:16 |
| blogic | did you create you footprints with kicad ? | 16:16 |
| blogic | i am thinking that vim might be easier :D | 16:16 |
| wpwrak | no. for footprints, i use fped | 16:16 |
| blogic | fped ? | 16:17 |
| wpwrak | http://projects.qi-hardware.com/index.php/p/fped/source/tree/master/ | 16:17 |
| blogic | homebrew ? | 16:17 |
| wpwrak | quick intro is here: http://downloads.qi-hardware.com/people/werner/fped/gui.html | 16:17 |
| wpwrak | yup. all mine :) | 16:17 |
| blogic | ok ... | 16:18 |
| blogic | i see you had the same thought as me then | 16:18 |
| blogic | i was sitiing here thinking that the editor in kicad is weird | 16:19 |
| blogic | :D | 16:19 |
| wpwrak | the footprint editor is a joke. and not a good one. | 16:19 |
| blogic | .... debian wants to install 167MB of dependenices for gtk2 :D | 16:19 |
| blogic | ok | 16:19 |
| blogic | i thouhgt it was just me | 16:19 |
| wpwrak | here are some example of footprints we did with fped: http://people.openmoko.org/werner/gta02-core/gta02-core-modules.pdf | 16:20 |
| blogic | aweome | 16:20 |
| blogic | i need to make some weird sot89 packages and lqfp | 16:20 |
| blogic | *lqfp128 | 16:20 |
| wpwrak | some of them are unfinished, e.g., have silk screen on pads and such | 16:21 |
| blogic | ok | 16:21 |
| blogic | well | 16:21 |
| blogic | the first bcps will be done on a cnc machine | 16:21 |
| blogic | so silkscreen is not needed just now | 16:21 |
| blogic | but once we produce i guess ...... | 16:21 |
| wpwrak | here's a (small) set of footprints that should be good for production. some were actually used in production: http://projects.qi-hardware.com/index.php/p/kicad-libs/source/tree/master/modules | 16:23 |
| blogic | http://en.wikibooks.org/wiki/Kicad/file_formats | 16:23 |
| blogic | cool | 16:23 |
| wpwrak | we have a few more tested ones, scattered over various projects | 16:23 |
| blogic | ;) | 16:25 |
| viric | hm | 16:54 |
| viric | do thermistors have colour codes? | 16:54 |
| kristianpaul | nope that i know, usually a datasheet | 16:57 |
| viric | hm mine has a black stripe, red stripe, and gold end | 16:59 |
| kristianpaul | may be is a thermocouple | 17:01 |
| viric | hm | 17:04 |
| viric | I don't think so | 17:05 |
| viric | mh I've a SMD resistor that says 5603. Do you interpret 560K? | 17:09 |
| wpwrak | possibly. 4 digits is somewhat rare, particular in the kind of circuit you're looking at. i'd measure. | 17:11 |
| viric | but I'd have to desolder it | 17:11 |
| viric | or calculate the big mesh of resistors :) | 17:12 |
| GordonFreeman | matrix multiply it | 17:13 |
| viric | ? | 17:13 |
| GordonFreeman | you know, linear equations | 17:13 |
| viric | yes | 17:14 |
| wpwrak | just measure it. if it's > 100 kOhm, it's probably really ~560k. if it's more like 50 Ohm, then it's 56 plus a weird extra digit | 17:15 |
| GordonFreeman | 4 digit is not rare btw, i use them often, they have 1% or more precision in general | 17:15 |
| viric | It has some 10K resistors in parallel | 17:15 |
| viric | and measuring it, it says ~10K | 17:16 |
| wpwrak | GordonFreeman: yes, but that seems to be the kind of circuit where they design with +/- 50% ;-) | 17:16 |
| wpwrak | GordonFreeman: of course, they may still have simply find it cheaper to use a 560k 1% than a 560k 5% | 17:16 |
| wpwrak | s/find/found/ | 17:16 |
| GordonFreeman | i never bought resistors >10% precision in smd | 17:17 |
| viric | it's the circuit of a heater, that simply has the opam working somewhat as a trigger schmith, for an opto-triac to switch the heater on and off. | 17:17 |
| wpwrak | i said "design" not "implement" ;-) | 17:17 |
| GordonFreeman | i see, then why are you concerned about values if it needs +-50% precision?: | 17:18 |
| viric | well, the circuit fails :) | 17:18 |
| viric | I wonder what piece to blame. | 17:18 |
| wpwrak | 10k is a tricky result ;) | 17:19 |
| viric | :) | 17:19 |
| GordonFreeman | i can tell you a quickhack function for resistor and capacitor networks, it's called the "Replus" operator, R_e=1/((1/R1)+(1/R2)) | 17:20 |
| viric | :) | 17:21 |
| viric | amazing hack | 17:22 |
| GordonFreeman | you can extend it to any number of resistors ;> | 17:23 |
| blogic | wpwrak: kicad is not bad | 18:09 |
| blogic | wpwrak: just tsrated making some simple layouts for testing | 18:09 |
| blogic | small atmega32u2 based baord | 18:09 |
| blogic | not as comfortable as eagle | 18:09 |
| blogic | but i used to think that eagle was obscure | 18:09 |
| blogic | :) | 18:09 |
| wpwrak | what do you think is missing ? | 18:10 |
| wpwrak | i think any eda system is obscure. goes with the territory :) | 18:10 |
| blogic | nothing missing | 18:11 |
| blogic | just the flow is very different to others i used | 18:11 |
| wpwrak | ah yes | 18:11 |
| blogic | the whole sch->netist->pcb | 18:11 |
| blogic | and the component not being linked to a footprint but the netlist bit doing the mapping | 18:11 |
| wpwrak | hehe :) | 18:11 |
| wpwrak | there are some quirks in selections, too | 18:12 |
| GordonFreeman | i am writing a pcb editor software for linux so i'd be interested in your problem | 18:12 |
| Action: GordonFreeman is Dominating | 18:13 | |
| Action: GordonFreeman is Godlike | 18:13 | |
| blogic | GordonFreeman: link ? | 18:16 |
| blogic | wpwrak: yes i found soem quirks already | 18:16 |
| blogic | i did however just open a bottle of red wine for inspirational purposes | 18:16 |
| blogic | :) | 18:16 |
| GordonFreeman | i'm writing the primitives rendering an core functions currently... | 18:16 |
| blogic | ok | 18:17 |
| wpwrak | it'll all make sense when you've finished that bottle :) | 18:18 |
| blogic | i know | 18:19 |
| GordonFreeman | wpwrak<< but if you have problems in general i may never let happen them in my software | 18:19 |
| GordonFreeman | i design pcb-s too btw, so i'd like to make it comfortable | 18:20 |
| GordonFreeman | i'm not telling secret if i say it will have fractal components | 18:20 |
| wpwrak | does the chip industry know about that yet ? :) | 18:21 |
| GordonFreeman | no <; | 18:21 |
| GordonFreeman | they'll have a concurrency | 18:22 |
| GordonFreeman | http://matrix.z-labor.com/tmp/C/sdltext_fps_d_asdf.c | 18:27 |
| GordonFreeman | some SDL example for linux | 18:27 |
| GordonFreeman | uses HRT | 18:27 |
| blogic | GordonFreeman: i see you dont like indenting :D | 18:38 |
| GordonFreeman | working on that ;>> | 18:40 |
| GordonFreeman | but i came from assembly | 18:40 |
| blogic | hehe | 18:40 |
| GordonFreeman | i use geany btw | 18:41 |
| GordonFreeman | recently changed the tab to spaces so it will be the same in mc f4 now | 18:41 |
| blogic | i use vi | 18:41 |
| blogic | :D | 18:41 |
| GordonFreeman | i have it because it's not user friendly | 18:42 |
| GordonFreeman | *hate | 18:42 |
| blogic | vi ? | 18:42 |
| GordonFreeman | yes | 18:42 |
| blogic | hehe | 18:42 |
| GordonFreeman | :quit to quit ? | 18:42 |
| GordonFreeman | lold | 18:42 |
| GordonFreeman | do not want | 18:42 |
| blogic | i find a mouse to be the most user unfriendly tool | 18:43 |
| blogic | apart from the fact that it is slow and kills productivity | 18:43 |
| GordonFreeman | sometimes | 18:43 |
| blogic | but then its everyones own personal preference i guess | 18:43 |
| GordonFreeman | but if you have to draw a pcb then it is more user-friendly than no mouse | 18:43 |
| GordonFreeman | feel free to give ideas for alternative input methods | 18:43 |
| blogic | hehe | 18:43 |
| GordonFreeman | blogic<< btw, come to #theblackmatrix and kick logic | 18:44 |
| GordonFreeman | you deserve that nick ;>>> | 18:44 |
| lars_ | vim is power-user-friendly | 18:53 |
| GordonFreeman | power users like comfort if they do actual work i guess | 18:55 |
| viric | wpwrak: so, I tweaked the circuit so it works now. I put a 6K8 resistor in parallel with another to make the opam schmitt trigger switch at a more normal temperature. :) | 18:57 |
| blogic | lars_: +1 | 18:57 |
| viric | but I'm quite rusted at all this | 18:57 |
| GordonFreeman | blogic<< f9 compile, f5 run, syntax highlight, automatic tooltips/code-completion rulz | 18:58 |
| blogic | GordonFreeman: no whitespace error highlighting :) | 19:00 |
| --- Mon Dec 19 2011 | 00:00 | |
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