<nicksydney>
http://vonger.cn/?p=6 --> "This month I spend all my free time on a cheap router chip named RT5350F. It is only 9RMB(1.5USD)." ... the chip is frickin' cheap !
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<DocScrutinizer05>
VoCore is kinda nice
<whitequark>
... except for the fact that we will have a lot more of insecure Linux machines which are never updated after deployment and are a perfect target for persistent threats
<whitequark>
it's not strictly their fault, but it's still a huge problem
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<nicksydney>
i sometimes don't understand why people want to work and have career in Google ? if the reason is because to work with bright minds ...a lot of open source engineer are damn bright !....but if they are after the money than it's different story
<wpwrak>
maybe it's the combination ?
<wpwrak>
also, google have the resources to actually make things happen
<Lumocolor>
recommendation for free drivers/firmware usb bluetooth 3.0+ dongel?
<wpwrak>
BT 4 ... the broadcom BCM20702A0 seems to have good support
<wpwrak>
well, just BCM20702 is enough
<Lumocolor>
bt4 even better
<wpwrak>
definitely, because bt 4 gives you btle
<Lumocolor>
it's for my mini bt keyboard + touchpad combo
<Lumocolor>
so I need bt3 min because I don't think it's been cracked... right?
<wpwrak>
i have a dongle with that chipset and it talks regular BT out of the box with ubuntu. (i got a little BT keyboard for testing) didn't even have to download firmware or such.
<Lumocolor>
shame it's a evil broadcom one sigh
<wpwrak>
dunno. the experts on poking holes into BT hang out of #ubertooth
<Lumocolor>
arrr thanks
<wpwrak>
at least it's not made my monsanto ;-)
<Lumocolor>
hehe but broadcom SOCs are as bad as monsanto :O
<wpwrak>
given how much the rpi spreads, you could almost say that :)
<Lumocolor>
bouns is it dosen't look like a boardcom one hehehe :)
<wpwrak>
kewl :)
<Lumocolor>
I wonder what the signal is like on these tiny things
<Lumocolor>
don't they need a 4cm antenna for err full range?
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<wpwrak>
maybe. but then, these centimeters don't have to be in a straight line
<wpwrak>
see atben/atusb: there, the antenna is folded
<wpwrak>
and then you have chip antennas that are even more compact
<DocScrutinizer05>
1/4 lambda, 5/8 lambda, 1/2 lambda diploles, there's a lot of stuff, it's not about a certain length of wire
<DocScrutinizer05>
and then an antenna basically *always* is a dipole - something most people like to ignore or not even understand
<wpwrak>
do you know how chip antennas manage to be so small ? is it mainly the dielectric or some clever folding ?
<wpwrak>
well, the meandering antennas hide their dipolity rather well ;-)
<DocScrutinizer05>
well, you can make an antenna out of everything, as long as the tuning is ok. Gain however is another question
<wpwrak>
takes a bit of explaining to make people understand that they're still basically the same
<DocScrutinizer05>
I don't think those chip antennas have a particularly good gain
<wpwrak>
and then you have even weirder forms, slot antennas etc. i don't even pretend how all those critters really work :)
<DocScrutinizer05>
RF is voodoo
<wpwrak>
some of the chips look reasonably decent. not all, though.
<wpwrak>
indeed
<DocScrutinizer05>
did you happen to run into the book about antenna design I bought in that awesome bookstore in TPE and left in OM office? it had some 1300 pages
<DocScrutinizer05>
just about antennas
<wpwrak>
no, never saw that one
<DocScrutinizer05>
(was too heavy to take it with me to D)