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<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
<kristianpaul>
he :)
<pabs3>
kristianpaul: context?
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<wpwrak>
pabs3: i'm wondering if the answer to that is a string or a boolean :)
<DocScrutinizer>
hmm, GordonFreeman ? we got a freemangordon in #maemo-ssu :-D
<GordonFreeman>
well i reserve the right to choose another random nick at any random time ;>
<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
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<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
<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)
<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
<GordonFreeman>
i don't do lol
<GordonFreeman>
i can do photolithography btw
<wpwrak>
(lol) mmh ?
<GordonFreeman>
well, make a film, and shine lighht through it.
<kristianpaul>
Just cath my atention they keep comparing with ingenic products in other pages...
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<viric>
wpwrak: do you still use kicad?
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<wpwrak>
viric: yes, of course. what else is there ? :)
<viric>
I'm updating the package in my distro
<viric>
to the sources of july 2011
<viric>
do you use the latest bazaar checkout?
<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
<viric>
ok
<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
<kristianpaul>
s/is/is not
<qi-bot>
kristianpaul meant: "argh, any idea how to hold well a wire, seems silicone is not good in long term solution just look this not gap between blue and purple cable http://kris nottianpaul.org/~paul/tmp/one_broke.jpg"
<viric>
hm I've a resistor brown/black/gold/gold
<viric>
what is that?
<viric>
1ohm?
<kristianpaul>
yes
<kristianpaul>
well, almost still +/- 5% of tolerance
<viric>
aha
<wpwrak>
kristianpaul: (pic) cephalopod son of The Blob ?
<kristianpaul>
wpwrak: horrible yes, but it was holding clock from sige receiver to milkymsit :,)
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<blogic>
wpwrak: ping
<blogic>
wpwrak: i am playing with kicad atm
<wpwrak>
*GONG*
<blogic>
i just opened a .lib file and saw its ascii
<blogic>
did you create you footprints with kicad ?
<blogic>
i am thinking that vim might be easier :D
<wpwrak>
we have a few more tested ones, scattered over various projects
<blogic>
;)
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<viric>
hm
<viric>
do thermistors have colour codes?
<kristianpaul>
nope that i know, usually a datasheet
<viric>
hm mine has a black stripe, red stripe, and gold end
<kristianpaul>
may be is a thermocouple
<viric>
hm
<viric>
I don't think so
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<viric>
mh I've a SMD resistor that says 5603. Do you interpret 560K?
<wpwrak>
possibly. 4 digits is somewhat rare, particular in the kind of circuit you're looking at. i'd measure.
<viric>
but I'd have to desolder it
<viric>
or calculate the big mesh of resistors :)
<GordonFreeman>
matrix multiply it
<viric>
?
<GordonFreeman>
you know, linear equations
<viric>
yes
<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
<GordonFreeman>
4 digit is not rare btw, i use them often, they have 1% or more precision in general
<viric>
It has some 10K resistors in parallel
<viric>
and measuring it, it says ~10K
<wpwrak>
GordonFreeman: yes, but that seems to be the kind of circuit where they design with +/- 50% ;-)
<wpwrak>
GordonFreeman: of course, they may still have simply find it cheaper to use a 560k 1% than a 560k 5%
<wpwrak>
s/find/found/
<qi-bot>
wpwrak meant: "GordonFreeman: of course, they may still have simply found it cheaper to use a 560k 1% than a 560k 5%"
<GordonFreeman>
i never bought resistors >10% precision in smd
<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.
<wpwrak>
i said "design" not "implement" ;-)
<GordonFreeman>
i see, then why are you concerned about values if it needs +-50% precision?:
<viric>
well, the circuit fails :)
<viric>
I wonder what piece to blame.
<wpwrak>
10k is a tricky result ;)
<viric>
:)
<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))
<viric>
:)
<viric>
amazing hack
<GordonFreeman>
you can extend it to any number of resistors ;>
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<blogic>
wpwrak: kicad is not bad
<blogic>
wpwrak: just tsrated making some simple layouts for testing
<blogic>
small atmega32u2 based baord
<blogic>
not as comfortable as eagle
<blogic>
but i used to think that eagle was obscure
<blogic>
:)
<wpwrak>
what do you think is missing ?
<wpwrak>
i think any eda system is obscure. goes with the territory :)
<blogic>
nothing missing
<blogic>
just the flow is very different to others i used
<wpwrak>
ah yes
<blogic>
the whole sch->netist->pcb
<blogic>
and the component not being linked to a footprint but the netlist bit doing the mapping
<wpwrak>
hehe :)
<wpwrak>
there are some quirks in selections, too
<GordonFreeman>
i am writing a pcb editor software for linux so i'd be interested in your problem
* GordonFreeman
is Dominating
* GordonFreeman
is Godlike
<blogic>
GordonFreeman: link ?
<blogic>
wpwrak: yes i found soem quirks already
<blogic>
i did however just open a bottle of red wine for inspirational purposes
<blogic>
:)
<GordonFreeman>
i'm writing the primitives rendering an core functions currently...
<blogic>
ok
<wpwrak>
it'll all make sense when you've finished that bottle :)
<blogic>
i know
<GordonFreeman>
wpwrak<< but if you have problems in general i may never let happen them in my software
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<GordonFreeman>
i design pcb-s too btw, so i'd like to make it comfortable
<GordonFreeman>
i'm not telling secret if i say it will have fractal components
<wpwrak>
does the chip industry know about that yet ? :)
<blogic>
GordonFreeman: i see you dont like indenting :D
<GordonFreeman>
working on that ;>>
<GordonFreeman>
but i came from assembly
<blogic>
hehe
<GordonFreeman>
i use geany btw
<GordonFreeman>
recently changed the tab to spaces so it will be the same in mc f4 now
<blogic>
i use vi
<blogic>
:D
<GordonFreeman>
i have it because it's not user friendly
<GordonFreeman>
*hate
<blogic>
vi ?
<GordonFreeman>
yes
<blogic>
hehe
<GordonFreeman>
:quit to quit ?
<GordonFreeman>
lold
<GordonFreeman>
do not want
<blogic>
i find a mouse to be the most user unfriendly tool
<blogic>
apart from the fact that it is slow and kills productivity
<GordonFreeman>
sometimes
<blogic>
but then its everyones own personal preference i guess
<GordonFreeman>
but if you have to draw a pcb then it is more user-friendly than no mouse
<GordonFreeman>
feel free to give ideas for alternative input methods
<blogic>
hehe
<GordonFreeman>
blogic<< btw, come to #theblackmatrix and kick logic
<GordonFreeman>
you deserve that nick ;>>>
<lars_>
vim is power-user-friendly
<GordonFreeman>
power users like comfort if they do actual work i guess
<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. :)