dos1 has quit [Read error: Connection reset by peer]
dos11 has joined #neo900
dos11 is now known as dos1
xray256 has joined #neo900
dos1 has quit [Read error: Connection reset by peer]
dos11 has joined #neo900
dos11 is now known as dos1
<DocScrutinizer05> 3 BB-xM arrived today, checked and working as far as CPU and HDMI are concerned
<MonkeyofDoom> they look friendly
<DocScrutinizer05> well, whatever that means for a BB-xM :-D
<DocScrutinizer05> another six pending shipping from dunno, prolly customs
<DocScrutinizer05> ebay tracking is sort of utterly useless :-/
karklyn has quit [Quit: leaving]
<MonkeyofDoom> tru
ahycka has quit [Read error: Connection reset by peer]
ahycka has joined #neo900
<DocScrutinizer05> on a sidenote: tiny news update on http://neo900.org/#news
ceene has quit [Ping timeout: 272 seconds]
ceene has joined #neo900
herpderphurr has joined #neo900
DocScrutinizer05 has quit [Disconnected by services]
DocScrutinizer05 has joined #neo900
herpderphurr has quit [Ping timeout: 264 seconds]
goiken has quit [Ping timeout: 276 seconds]
goiken has joined #neo900
lobito has joined #neo900
pagurus has joined #neo900
pagurus` has quit [Ping timeout: 276 seconds]
goiken has quit [Ping timeout: 244 seconds]
qws-user-1228 has quit [Ping timeout: 250 seconds]
goiken has joined #neo900
qws-user-1228 has joined #neo900
qws-user-1228 has quit [Read error: Connection reset by peer]
ravelo has joined #neo900
qws-user-1228 has joined #neo900
qws-user-1228 has quit [Read error: Connection reset by peer]
qws-user-1228 has joined #neo900
qws-user-1228 has quit [Read error: Connection reset by peer]
qws-user-1228 has joined #neo900
goiken has quit [Ping timeout: 240 seconds]
goiken has joined #neo900
ravelo has quit [Disconnected by services]
liteIRC_ has joined #neo900
liteIRC_ is now known as liteIRC__
liteIRC__ is now known as ravelo
chainsawbike has quit [Ping timeout: 244 seconds]
chainsawbike has joined #neo900
goiken has quit [Ping timeout: 260 seconds]
goiken has joined #neo900
chainsawbike has quit [Ping timeout: 272 seconds]
chainsawbike has joined #neo900
jonsger has joined #neo900
jonsger has quit [Remote host closed the connection]
jonsger has joined #neo900
hellekin has joined #neo900
<hellekin> was I out? Damn, I can't get used to the 'internals' of weechat.
<wpwrak> hellekin: the traditional questions in this type of situation would be: "where am i ?" "what year is it ?" "what's my name ?"
<hellekin> wpwrak: I know all this. Weechat, I'm still a bit confused.
<hellekin> It's supposed (with znc) to keep me everywhere I need to be, but actually it doesn't appear to do so exactly.
galiven has joined #neo900
galiven__ has quit [Ping timeout: 265 seconds]
SylvieLorxu has joined #neo900
<hellekin> Here's a "reverse-engineering and security conference" happening in Brussels in January... https://recon.cx/
<hellekin> DocScrutinizer05: you might want to propose something https://recon.cx/2017/brussels/cfp/ (deadlines Oct. 30 and Nov. 27) Probably a nice place to meet hardware and mobile hackers.
goiken has quit [Ping timeout: 276 seconds]
goiken has joined #neo900
goiken has quit [Ping timeout: 250 seconds]
goiken has joined #neo900
goiken has quit [Ping timeout: 240 seconds]
fling has quit [Quit: ZNC - http://znc.in]
SylvieLorxu has quit [Quit: ZNC - http://znc.in]
goiken has joined #neo900
fling has joined #neo900
fling has quit [Ping timeout: 248 seconds]
<wpwrak> DocScrutinizer05: we have two pairs of test points (the things that look like junctions without anything branching from them) on battery +/-, one near the battery, the other above U501. is there a reason for this. or do i let the delete key do what it does best ?
<wpwrak> (i'm also disentangling and labeling these critters. after all, we may want to use them without the employ of a divining rod.)
paulk-collins has quit [Quit: Leaving]
fling has joined #neo900
<ravelo> DocScrutinizer51: ping
<ravelo> Anyone alive? :)
<ravelo> ...
<hellekin> ravelo: I'm alive, but not sure how I can help :)
<ravelo> I am trying to reach Jörg
<hellekin> me too... He must be busy AFK.
<ravelo> I hope he will show up soon
<hellekin> ravelo: did you ping him by email, or does your request require presence?
<ravelo> Good idea. I could try email.
<ravelo> Thx
<hellekin> yw
<ravelo> No :(
<hellekin> ? yw = you're welcome ravelo
<ravelo> Sure i know
<ravelo> I'm not happy as i did not find him...
<ravelo> Thx
jonsger has quit [Ping timeout: 265 seconds]
jonsger has joined #neo900
jonsger has quit [Ping timeout: 265 seconds]
ecloud has quit [Ping timeout: 240 seconds]
ravelo has quit [Ping timeout: 264 seconds]
ravelo has joined #neo900
SylvieLorxu has joined #neo900
ecloud has joined #neo900
<ravelo> Nice Newsletter, thanks Hellekin
<ravelo> A lot is happening now
<ravelo> ;)
xman has joined #neo900
Pali has joined #neo900
paulk-collins has joined #neo900
liteIRC_ has joined #neo900
ravelo has quit [Disconnected by services]
liteIRC_ is now known as liteIRC__
liteIRC__ is now known as ravelo
radekp has quit [Quit: Konversation terminated!]
<wpwrak> DocScrutinizer05: any thoughts about the TPs mentioned in the TODO on page 5 of https://neo900.org/stuff/werner/tmp/ee/pdf/neo900.pdf ?
<wpwrak> they look pretty redundant to me, but maybe they're on a secret mission that was decided before my time
illwieckz_ has joined #neo900
illwieckz has quit [Ping timeout: 248 seconds]
<DocScrutinizer05> redundant
<wpwrak> and .. gone
<pigeons> i don't think i got a newsletter. let me check gmail's spam box
<wpwrak> you may also want to have a look at page 8 (antenna connections), especially the RC filter on the output of U804, U805 (nik left that one unspecified and we never discussed it) and the ANT_DRX tap (not quite sure what that one's supposed to do. nik had an u.fl, so i just added our optional tap/jumper there)
<DocScrutinizer05> pigeons: news article I guess, we now publish minor news updates without sending email
<DocScrutinizer05> the RC on output of the RF detectors are according to specs for sample&hold mode
pagurus has quit [Remote host closed the connection]
<DocScrutinizer05> we also need a comparator there that's waking up CPU when energy_out > energy_in
<pigeons> cool
<wpwrak> ah, so that incomplete comparator (just a box, no details) i deleted wasn't something obsolete ...
<DocScrutinizer05> ANT-DRX is for WWAN MIMO and either needs a second antenna or get dealt with according to P*S8 hardware interface manual
<wpwrak> would that just be a comparator, or a more complex circuit ?
<DocScrutinizer05> no, wasn't obsoltete, just the DC-blocker capacitors on input were cruft/nonsense, since we have s&h on outputs of the sensor chips
<DocScrutinizer05> just a comparator
<DocScrutinizer05> however ideally one that doesn't need energy or has a shutdown mode
<wpwrak> (drx) i looked for wisdom in the phs8-e hw guide on what to do if DRX is absent, but it doesn't really say
<DocScrutinizer05> I think it does
<wpwrak> pointers welcome. maybe i didn't use the right search term
pagurus has joined #neo900
<DocScrutinizer05> on p37 PLS8 HID we have footnote 1: By delivery default the UMTS/LTE Rx diversity/MIMO antenna is configured as available for the module since its usage is mandatory for LTE. Please refer to [1] for details on how to configure antenna settings.
<wpwrak> no enable, but quiescent current than many others would have for input leakage :)
<DocScrutinizer05> yeah, looks good on first glance
<wpwrak> (pls8 hd) interesting. it`s in the ~a revision but not i the ~c revision of the document
<DocScrutinizer05> (ANT_DRX) the idea been to abuse the FM-TX antenna which in turn we'd connect to dunno, something else or in parallel
<DocScrutinizer05> yeah, Nikolaus had a chat with Gemalto about this IIRC
<DocScrutinizer05> anyway it's RX aiui, so whatever we do to it, it can't have such a massive impact to our design
<DocScrutinizer05> (comparator) the "trick" is to give it a slight negative bias so it won't 2float" around triggering point when both sensor chips detect "zilch"
<DocScrutinizer05> which tbh is a problem since those sensors have a pretty wide error range on output signal
<DocScrutinizer05> that's why I suggested the DC buffer caps, the idea been to only sense the relative signal edge delta
<DocScrutinizer05> so the whole thing is sort of a evaluation circuit to see if we could implement it in hw or need to do it in sw
<DocScrutinizer05> suggestions for smarter circuitry welcome
<DocScrutinizer05> tbh I'd *love* to have a chip with programmable threshold on analog comparators here ;-)
<DocScrutinizer05> such chip actually maybe also could do the PWM for the two sensors to reduce their power consumption
<DocScrutinizer05> so we don't need to do that in sw / cpu-pwm hw
<wpwrak> it has a little hysteresis
<DocScrutinizer05> read the sensor chip DS, they have *huge* error DC bias on output
<DocScrutinizer05> and I'm not sure if we may assume they come "paired"
ravelo is now known as ravelo_
<wpwrak> you mean dVout,min = +/- 20 mV ?
<wpwrak> alas, much more than the comparator's hysteresis of 17 mV
<DocScrutinizer05> a chip that could do mixed signal that has some comparators, and would talk I2C, a dream for this usecase
<DocScrutinizer05> ;-)
ravelo_ is now known as ravelo__
<DocScrutinizer05> (dVout,min) not sure, probably rather the conversion multiplier
<DocScrutinizer05> it's a while since I looked into it
<wpwrak> DocScrutinizer05: (dream chip) sounds like silego or kl16 ;-)
ravelo__ is now known as ravelo
<wpwrak> the kinetis (kl16 et al) have a programmable hysteresis, but that only goes up to about 35 mV
<DocScrutinizer05> if only silego would offer I2C in circuit programmability
<DocScrutinizer05> ;-
<DocScrutinizer05> )
<wpwrak> it gets close enough :)
<DocScrutinizer05> and a D/A for setting a reference voltage externally
<wpwrak> btw, silego also has programmable hysteresis, going up to ~200 mV
<wpwrak> we have several rather bored comparators in the IR silego
<wpwrak> .. which happens to be on the same board (LOWER) as the modem
* wpwrak deletes that new comparator chip and connects the stuff to silego
<DocScrutinizer05> I'd prefer a dedicated chip for this, since a) avoids possible RF/IR interference, and b) the RF solego might get pretty busy in the end
<wpwrak> dedicated silego ?
<DocScrutinizer05> SILicon LEGO
<DocScrutinizer05> yep
<wpwrak> they'll love us. that's already #3 ;-)
<DocScrutinizer05> I know ;-)
<wpwrak> and it's also cheaper than the single comparator, win-win
<DocScrutinizer05> *maybe* we can even do A/D with it
<wpwrak> as long as you don't need more than two bits ...
<DocScrutinizer05> for sure we could, if the external reference on INV CMP_in was by D/A and buffer cap
<wpwrak> ... or want to experiment with slopes ...
<DocScrutinizer05> I'll come up with a design shortly
<DocScrutinizer05> I2C / GP5 wasn't available in SiLego when I designed that SVWR / comparator stuff
<DocScrutinizer05> 12 648 430
<DocScrutinizer05> the high level design goal being: PWM-dutycycle the LMV221 (S&H mode), compare forward to return energy on antenna, have an option to A/D both, have a generic way to IRQ the CPU on certain conditions, usually when (after calibration) forward energy > return energy
<DocScrutinizer05> calibration of all trigger levels
<DocScrutinizer05> very nice-to-have: trigger IRQ on rising edge on either Pfwd or Prev, with adjustable threshold
<wpwrak> hmm. you said "no" when i asked about "a more complex circuit" :)
<DocScrutinizer05> sorry, can't recall. Maybe a misconception
<DocScrutinizer05> or I changed my mind since then - this also rarely but happens
<wpwrak> or everything < OMAP is "trivial" ;-)
<DocScrutinizer05> iirc you asked about an external supervision CPU doing complex own monitoring and heuristics. won't fly
<DocScrutinizer05> what we need here is a smart mixed signal RF comparator
ravelo has quit [Read error: Connection reset by peer]
ravelo has joined #neo900
<DocScrutinizer05> J801 != GNSS
<wpwrak> you passed the awakeness test ;-)
<DocScrutinizer05> not yet :-)
<DocScrutinizer05> is that note about "the RC filter should..." by you and new?
<DocScrutinizer05> the LMV221 has S&H mode
<DocScrutinizer05> which isn't clear and thus misleading by that remark
<wpwrak> yes, the RC filter stuff is new. i just used the terminology from the data sheet.
<DocScrutinizer05> aah OK
<wpwrak> hmm, bad news: the programmable hysteresis is only for comparing one input with internal reference voltage, not for comparing two inputs :(
<DocScrutinizer05> yes, but that's not bad when we control the external reference anyway
<DocScrutinizer05> actually hysteresis isn't our concern here. Bias is
<DocScrutinizer05> we need a comparator that's 'precise' enough to discern an outbound RF signal to an antenna with (per spec) >12dB return loss from an inbound signal to a modem ANT pin with (per datasheet) >9dB return loss
<DocScrutinizer05> question mark on the latter, not passing awake-text yet
<DocScrutinizer05> >=8dB
<DocScrutinizer05> or (in idle) >=5dB
<DocScrutinizer05> that's still a comfortable 12+5 = 17dm margin for our comparator to tell apart inbound RF (nearby other transmitter) from RF generated aka sent by the modem
<DocScrutinizer05> 17dB even
<DocScrutinizer05> please don't dive into the details of the comparator design right now, I'll provide a circuit
<DocScrutinizer05> wpwrak: ^^^
paulk-collins has quit [Quit: Leaving]
<wpwrak> sure. i need a break anyway. having started the day with an hour of explosive sneezing is beginning to catch up with me ...
<DocScrutinizer05> ouch! I know that from back when I been 14 years old
<ravelo> I thought these problems only exist in middle europe
<ravelo> ...
<wpwrak> ravelo: i used to get along with the pollen here, but that changed a few years ago. i guess they've evolved weaponization
<DocScrutinizer05> or you imported Ambrosia
<DocScrutinizer05> (you = Argentina)
<wpwrak> a mythical drink "depicted as conferring longevity or immortality upon whoever consumed" ? hmm. didn't think of these reactions quite like that ;-)
<wpwrak> ah :) no, it's the trees. the streets are full with their pollen.
<wpwrak> maybe they're trying to brute-force growth on asphalt or such. you never can quite tell what's going on in the wicked mind of a tree ...
<DocScrutinizer05> https://de.wikipedia.org/wiki/Beifußblättriges_Traubenkraut
<DocScrutinizer05> https://de.wikipedia.org/wiki/Beifußblättriges_Traubenkraut#Allergie-Ausl.C3.B6ser
<DocScrutinizer05> >>...haben herausgefunden, dass sich die allergischen Reaktionen des Beifußblättrigen Traubenkrauts verstärken, wenn sie mit Stickstoffdioxid in Verbindung treten<< This applies to a lot of alergene pollen
<DocScrutinizer05> this or similar
ravelo has quit [Ping timeout: 255 seconds]
<DocScrutinizer05> wpwrak: did you ever have your allergy status tested?
<DocScrutinizer05> knowing exactly what you're allergic to is the first step to cope with it
<DocScrutinizer05> a tip from my experience (obviously unknown to medical doctors): the skin pierce allergen test might give false negatives for allergens that you're already massively exposed to, since the amount applied is << the amount you have to deal with every day
<DocScrutinizer05> so ideally do such test when you're not suffering active allergy
<DocScrutinizer05> during local winter time
<DocScrutinizer05> obviously also don't do this test during cetiricine et al medication ;-)
ravelo has joined #neo900
ravelo has quit [Changing host]
ravelo has joined #neo900
ravelo has quit [Read error: Connection reset by peer]
ravelo has joined #neo900
xray256 has quit [Quit: WeeChat 1.4]
ravelo has quit [Quit: liteIRC for Android]
ravelo has joined #neo900
ravelo has quit [Disconnected by services]
liteIRC_ has joined #neo900
liteIRC_ is now known as liteIRC__
liteIRC__ is now known as ravelo
ravelo has quit [Disconnected by services]
liteIRC_ has joined #neo900
liteIRC_ is now known as liteIRC__
liteIRC__ is now known as ravelo
chainsawbike has quit [Ping timeout: 244 seconds]
ravelo has quit [Quit: liteIRC for Android]
chainsawbike has joined #neo900
paulk-veyron-min has joined #neo900
Oksana has quit [Ping timeout: 244 seconds]
Oksana has joined #neo900
paulk-veyron-min has quit [Read error: Connection reset by peer]
lobito has quit [Quit: Leaving.]
qws-user-1229 has joined #neo900
qws-user-1228 has quit [Ping timeout: 248 seconds]
xman has quit [Quit: Leaving.]
SylvieLorxu has quit [Quit: ZNC - http://znc.in]
varu|zZz is now known as varu