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<Wizzup>
Interesting to hear that KREYREN gets audio in sip calls in voicecall manager
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<Wizzup>
that would be super welcome news, then we just need to figure out how he got it to work and what we need to change :)
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<arno11>
Wizzup: i can confirm it works on my device as well. but only in one way (but with a very bad connection btw)
<arno11>
i'll try again when back to home
<Wizzup>
ok, it might be time to rnu gabble with additional debug and compare our config/settings
<arno11>
ok
<Wizzup>
back in a few hours :)
<arno11>
me too
<arno11>
ttyl
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<KREYREN>
So i turned the boost mode on and it actually killed the battery xD Won't charge anymore
<KREYREN>
good thing the replacement that should have much better health arrived today
<sicelo>
that shouldn't happen
<sicelo>
the won't charge anymore part, that is
<KREYREN>
sicelo, the battery is very old it was barelly hanging by, it seems that the increase of 0.2A is too much for it
<sicelo>
i think that shouldn't prevent charging
<sicelo>
anyway, you have a battery on the way ...
<KREYREN>
it's effectively charging at 1.4W atm and afaik the BMS cut out is 1.5W bcs it has too much of internal resistance now?
<KREYREN>
and it was at 1.58W charging before
<KREYREN>
took like 14h to get full charge
<KREYREN>
also heats up a lot
<sicelo>
ok
<KREYREN>
Did anyone tried to make a DIY battery for N900 before btw?
<KREYREN>
was thinking about reverse-engineering the BMS and putting a lipo on it
<sicelo>
i think you asked in #maemo the other day, or was it someone else? yes people have run the N900 on 18650 in 2S config for example
<KREYREN>
wasn't me
<KREYREN>
oh there is a whole forum post about it on maemo website :D
<KREYREN>
cool
<KREYREN>
The diagram is kinda sketch
<KREYREN>
hmm it has 3 pins right do you need anything special sent on the 3rd pin for the data>
<sicelo>
iirc it's meant to be a thermistor, whose resistance feeds an ADC in the phone. it's used to estimate the battery capacitance
<KREYREN>
i see
<sicelo>
there should be information about the average resistance you can put it (so no necessarily a thermistor)
<KREYREN>
so basically it tells the N900 when to stop charging when the battery is too hot right
<sicelo>
not really @ getting hot
<sicelo>
unfortunately n900 charging & fuel gauge circuitry is a bit of a hack. tldr; the chip that does temp sensing for the battery is actually located in the phone, not in the battery
<KREYREN>
i see
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<arno11>
KREYREN: 14h to get full charge ?...wow something went really wrong lol
<arno11>
usually boost mode has almost no real impact on a good battery (no excessive heat or high power usage)
<arno11>
at least on my device
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<arno11>
btw 600 and 805MHz use the same voltage actually
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<KREYREN>
arno11, it seems to have increased the power draw by 0.2 A which apparently was enough to finish it :D
<arno11>
200mA seems a lot
<arno11>
0.2A @idle ? or doing something specific ?
<KREYREN>
arno11, how's the power consumption on your end? the pcb that i have in it atm was very hugged up when i got it so it's possible that somethign does too much resistance
<arno11>
pretty sure something is really wrong
<arno11>
most of the time with boost mode, it stays @500 600MHz as usual
<arno11>
and i've never seen such a power draw with higher freqs
<KREYREN>
arno11, would it be too much trouble for you to take the PCB out of the device and report to me the resistance on the test pads using a consistent ground? Would help me a lot to fix the other N900 which basically has a black spots over the PCB and lithography sparks on the antenna on the case
<KREYREN>
ideally the ground on the hackerbus
* KREYREN
's both N900 were saved from e-recycling service and he basically had to rework the whole PCB to get the device to work
<arno11>
sorry too much trouble for me: already have damaging parts on it :(
<arno11>
ah ok i see
<KREYREN>
yea i ideally need this from a device that is in mint condition :D
<KREYREN>
i will be open-sourcing the PCB so that should fix these issues after though
<KREYREN>
(not up to date there is more work that i am putting together into a sensible standard)
<arno11>
ok, really cool btw
<KREYREN>
^^
<KREYREN>
there is still like 2 weeks of work so hopefully in a month the SOM will be handled and then making the PCB is like 8 days of work
<KREYREN>
bcs just making exact copy would be too expensive to fabricate
<arno11>
ok, ofc
<KREYREN>
the SOM fixes that by utilizing that lot of PCB fabricators will do up to 8 layer pcbs for 2 EUR and you get 5 of them, but they have to be below 50mm2 so putting that on a 2 layer board with spread out pins to be able to route it
<sicelo>
you're the one that asked for Neo900 files (gerber)? I've been asking myself where I remember your nick from
<arno11>
really interesting stuff
<KREYREN>
sicelo, ye
<KREYREN>
sicelo, h
<KREYREN>
sicelo, guy from the hackerspace that cooperated on the neo900 project was at our hackerspace yesterday even :D
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<Wizzup>
KREYREN: which hackerspace?
<KREYREN>
Wizzup, Ours is Base48 and the german one is ChaosZone
<Wizzup>
Ah in brno
<KREYREN>
Ye
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<Wizzup>
btw, I think the PA change for shm also fixed ringtone for me
<arno11>
it works again for me as well
<Wizzup>
maybe we should try the 4? (or 8?) that FMG suggested
<Wizzup>
I think I am still on 32 or 16
<arno11>
i tried 4
<Wizzup>
works well?
<arno11>
performances with emulators decreased
<arno11>
otherwise, no change
<Wizzup>
interesting
<arno11>
yep
<arno11>
example:
<Wizzup>
I will set 8 for now
<arno11>
with 64, picodrive can't run @60 fps + audio 44100 and need a bit of frameskip
<arno11>
with 32, works fine
<arno11>
with 4, same as 64
<Wizzup>
strange
<arno11>
yep
<arno11>
maybe that's just a weird stuff with pico