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<qi-bot>
Pete Ippel ‽: I gave @qihardware +K about Hacking on @klout http://t.co/b7v7ePcY ( 147478470400819200@hypermodern - 19s ago via Tweet Button )
<qi-bot>
Qi Hardware: RT @paul_keller: @fabricatorz @qihardware http://t.co/Miadj7wE… ( 147479463867850753@qihardware - 23s ago via HootSuite )
<qi-bot>
Qi Hardware: RT @paul_keller: @fabricatorz @qihardware http://t.co/ZK0cH1ih… ( 147479471312748545@qihardware - 21s ago via Ping.fm )
<qi-bot>
Qi Hardware: RT @hypermodern: I gave @qihardware +K about Hacking on @klout http://t.co/gZqMGer6… ( 147479518213443584@qihardware - 10s ago via Ping.fm )
<wpwrak>
can anyone decode this ?
<wpwrak>
has actually any information been conveyed ? or is this just psychodelic noise ?
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<akiwiguy>
Hello, all.
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<roh>
wolfspra1l: yeah. ive seen the hughski... my guess its a readymade case
<roh>
you can buy such cases in lots of formats. one just needs to choose one fitting and make sure the case stays available ;)
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<kyak>
wolfspra1l: i just googled for "linux educational games", most of them popped up
<wolfspra1l>
roh: any good url where to search/buy such cases?
<Jay7>
fosdem announced
<Jay7>
one should submit MM demo :)
<roh>
not really.. i know the bopla and such cases one can buy at local shops
<roh>
farnell has them
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<newcup>
was there some kind of audio editor (wav) for ben? I can't find right now
<xiangfu>
newcup, sox.
<newcup>
xiangfu: ok, thanks! I'll have to check that out
<xiangfu>
newcup, there is no GUI wav editor.
<newcup>
yeah, I was thinking about something like audacity
<newcup>
but cli is good, too
<newcup>
I just recently got a korg monotron (a very tiny monophonic analog synthesizer), and a ben with audio editor could be a very nice companion for it
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<newcup>
xiangfu: yeah, exactly that
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<xiangfu>
newcup, what you do with your Korg monotron?
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<newcup>
xiangfu: well, I intend to make some music with it :)
<newcup>
it would be the ultimate portable synth-music studio setup, that and ben together :)
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<xiangfu>
newcup, cool. how you record your result?
<xiangfu>
it's cool that you use ben play / edit the music. :)
<kudkudyak>
it would also be interesting to make a video showing how you use it (it would help people visualize themself using it and cool it could be :)))
<kudkudyak>
s/and cool/and how cool/
<qi-bot>
kudkudyak meant: "it would also be interesting to make a video showing how you use it (it would help people visualize themself using it and how cool it could be :)))"
<newcup>
well, I don't have a ben yet :P
<newcup>
and that monotron ribbon controller requires quite a lot of practice...
<newcup>
so don't hold your breath waiting for a video yet :)
<kudkudyak>
yes, i know :)
<newcup>
but anyway, korg has this monomania sound contest, it would be cool to win it with a video featuring a ben also
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<newxterne452>
hi
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<deneme>
did anyone elsehave issues with reflash constantly complaining about missing bc commands and unary operators?
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<xiangfu>
deneme, missing 'bc' after reflash?
<xiangfu>
newxterne452, Hi
<deneme>
nah, missing bc during reflash
<deneme>
eitherway, im doing an usbboot
<deneme>
ill let you know
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<xiangfu>
deneme, oh. just try to install the 'bc'
<xiangfu>
deneme, reflash_ben.sh using 'bc' to calculate the progress bar.
<newxterne>
hi
<newxterne>
xiangfu
<deneme>
well, I am half way through the usbboot
<deneme>
so :) might aswell finish it :)
<deneme>
so this takes 15 minutes huh
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<deneme>
and done
<deneme>
pretty cool
<deneme>
except it took a bit
<deneme>
anyway, I gotta go
<deneme>
see you in a couple of hours
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<kristianpaul>
cardboard may be usefull for prototyping, how do feel it holding whole PCB wpwrak ?
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<wpwrak>
the kind of cardboard is very weak. it's the hollow kind, used for packaging
<wpwrak>
specifically, this one is from the box of an electrical saw
<kristianpaul>
i see, better MDF then :)
<wpwrak>
those boxes easily get dents and can even rupture with rough handling. now, if the purpose of the cardboard is just to keep things from falling on your circuit, and the circuit stays in your lab, then a 100% cardboard case may be okay
<wpwrak>
particularly if it's like the M1, where some structural strength can be provided by the PCB. i.e., in a way, M1 has a skeleton and doesn't depend on the case to provide support
<wpwrak>
oh, MDF is a LOT more solid
<kristianpaul>
arghh spam
<wpwrak>
the difficulty there is to find it in thin enough sheets that you don't have to mill away a meter of stuff you don't care about
<kristianpaul>
wpwrak: indeed, o was thinking you can carry with you (M1 case)
<wpwrak>
(spam) just one :)
<kristianpaul>
hopefully
<wpwrak>
plywood may also be an option. that's harder than MDF. not so easy to machine, though
<wpwrak>
my problem is of course the mill size. mine does only 15x10 cm. so i can only do the small sides of M1, not the long sides or the top/bottom parts
<kristianpaul>
hmm, too small indeed
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<deneme>
testing voice
<deneme>
cool
<DocScrutinizer51>
moo
<deneme>
moo to you too
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<deneme>
ok well, I'll install jlime instead
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<deneme>
man... jlime is so much slower...
<wpwrak>
ah, interesting
<wpwrak>
first time i hear someone complain about that. anything specific ?
<deneme>
oh, the boot time, actually is what has grabbed my attention the most
<deneme>
it is twice or thrice as long, I think
<wpwrak>
ah :)
<deneme>
the rest I didnt notice much
<wpwrak>
i guess nobody bothered to optimize it lately. while quite a lot of effort went into making openwrt boot faster.
<deneme>
hmm...
* krispaul
pokes zrafa
<wpwrak>
maybe you should post this to the list. it'll pis off the jlime folks and then they'll hack until they beat openwrt ;-)
<wpwrak>
ah, he's here. even better ;-)
<deneme>
heh
<deneme>
I am just expermimenting as of now
<deneme>
it hasnt been more than a couple of hours since I got my ben
<krispaul>
nice ! :)
<krispaul>
wellcome
<deneme>
thanks ! :)
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<krispaul>
Artyom: hi !
<Artyom>
hi Kristianpaul! :)
<krispaul>
Artyom: do you have the algorith to get correlation peak treshold?
<Artyom>
Ehm, I did it empirically... You can also try to calculate it.
<krispaul>
hmm, i prefer check the peak for my self, so far plotting was a little ramdon
<Artyom>
When I was chosing a threshold I ploted correlators output. For a satellite that is in view you can clearly see a peak. It will be at least two times higher than the average level.
<krispaul>
ok
<Artyom>
Whem I say I ploted correlators output I mean that I ploted (Ie^2+Qe^2), (Ip^2+Qp^2) and (Il^2+Qp^2)
<krispaul>
ahh, good point i tought was raw output :)
<Artyom>
sorry last brakets must be (Il^2+Ql^2)
<Artyom>
Actually raw output can also be good. But It's better to use these formulas.
<krispaul>
good, i-ll start with the measurements today
<krispaul>
I also want to askm what atenna type are you using?
<Artyom>
From theoretical point of view this means that you plot energy in early, prompt and late channels
<Artyom>
One more thing
<krispaul>
yes
<deneme>
whats the rc.conf of jlime?
<Artyom>
if you use half chip step during acquisition then you can use only prompt channel output. It's easier. (But there are some drawbacks)
<Artyom>
BTW what is your correlator clock frequency? And what is your MM1 SoC clock?
<deneme>
deneme: found it
<krispaul>
Artyom: 16.384 Mhz for correlator and MM1 SoC clokc is 16.384 Mhz x 4
<Artyom>
And why don't you use the same clock for both?
<krispaul>
well i could too
<krispaul>
*g*
<krispaul>
I just made use of accum_sample_enable
<krispaul>
Artyom: i do
<krispaul>
i mean just the MM1 SoC have a DCM
<Artyom>
yes, I understand it. So MM1 runs with the clock 4 x 16.384
<krispaul>
but yes i can i ran trouble i'll same clock for erything
<Artyom>
But I still don't understand which clock goes to namuru? 16.384 or 4 x 16.384?
<krispaul>
4 x 16.384
<Artyom>
ok
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<Artyom>
Then there is mistake in TIC_periode calculation
<krispaul>
hmm
<krispaul>
from the namuru upstream or you mean in my port?
<Artyom>
one more note: the procedure that is described on the page that you have mentioned is correct. But for the first experiments I suggest to use delay_step=0.5chip; Doppler_step=500Hz (bigger steps are possible but they result in additional losts in SNR and it's better to play with these values later). Record output from all 6 correlators (Ie, Qe, Ip, Qp, Il, Ql). After you record all values,...
<Artyom>
...you can plot (Ie^2+Qe^2), (Ip^2+Qp^2), (Il^2+Ql^2). After you will see a peak you can try to plot only (Ip^2+Qp^2). It's better to have more data when you start experimenting.
<Artyom>
I read on the page "ACCUM_INT period = (accum_divide + 1) / 16.384MHz For 0.5 ms accumulator interrupt accum_divide = 16.384x10^6 * 0.0005 - 1 accum_divide = 0x1FFF " - but if you use namuru clock 4 x 16.384 then you have to use this value it TIC_periode calculation
<krispaul>
ah yes, goot spot, at the time i wrote that correlator was using separate clock..
<krispaul>
that, ..
<Artyom>
I use different antennas: but even the cheapest work fine
<krispaul>
good, i was bit worried about gain
<krispaul>
so... how is your milkymist hacking going so far? :)
<Artyom>
well, very exciting ;)
<Artyom>
The bad thing that port that I use doesn't include debugging monitor (actually there is no space for it in spartan3e500)
<Artyom>
I can read correlators output, I can set accum_int and TIC period
<krispaul>
hmm, seems you may need a milkymist one soon ;-)
<Artyom>
Last time I played with it I tried to run my ARM-program.
<Artyom>
But I faced couple of problems problem:
<Artyom>
At first I tried to use polling and to check the state of the input pin that I have connected to accum_int
<Artyom>
But it didn't work in while-loop (like in my ARM-program)
<Artyom>
Then I tried to check status-regiter
<Artyom>
It worked better but not like I have expected ;)
<Artyom>
For example printf-function stopped to work after outputting some amount of data
<krispaul>
just stopeed thats odd
<krispaul>
i know it make fail to display data sometimes but thats new to me
<krispaul>
s/make/may
<qi-bot>
krispaul meant: "i know it may fail to display data sometimes but thats new to me"
<Artyom>
But without using printf-function the program worked incorrectly (it resarted acquisition very often). According to algorithm it should restart every 10 seconds but in fact it restarted 10 or more times faster. So it didn't work correctly but I couldn't check what was wrong because nor printf nor debug is working ;)
<krispaul>
milkymist libc is not the best lib around, actually i guess rtems as lib is much better tought :)
<Artyom>
if you are interested I can send you the code. You will have to change some constants like accum_int periode, carrier_freq and so on...
<krispaul>
yes sure
<Artyom>
and the correlator is still in vhdl ;)
<krispaul>
erghh yes
<krispaul>
at least to see if it runs and non stop
<Artyom>
I don't think that it's a big problem because TDC-port also mix verilog with vhdl
<Artyom>
;)
<krispaul>
I heard from the same devel of that code (tdc) that was not a good pratice... so :)
<krispaul>
btw a code sample from delay is in tdc-core as well
<zrafa>
wpwrak: krispaul deneme : what is happening?.. complains go into the complain book :)
<wpwrak>
zrafa: deneme has discovered that jlime boot time sucks :)
<Artyom>
no complains: only facts ;)
<zrafa>
deneme: first boot time could be longer (it generates ssh keys, etc)
<krispaul>
i'm not complaning of something i dont use :D,
<wpwrak>
ah, first boot ! interesting
<krispaul>
ah yes thats truth
<deneme>
im just chillin. seing which apps I can port and whatnot. and its not necessarily the 1st boot only, the avg case is still considerably longer
<zrafa>
deneme: which jlime version?
<krispaul>
wpwrak: jlime/oe upstream version even have a first time run wizard prety nice :) well when i tested time ago