IRC log for #neo900 on 20160518

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19:57.54ndnihilhttp://www.wired.co.uk/news/archive/2016-05/18/nokia-smartphones-tablets-deal-microsoft-hmd
19:58.32ndnihilI wonder if they'd be interested in injecting some cash/manufacturing/technical assistance into neo900
19:59.57ndnihilthough I think I might be forced to play with a cat s60 until this one comes out
20:00.08ndnihilI love my standlone FLIR, having one on the phone would rock
20:00.45DocScrutinizer05cat s60 looks cool, yes
20:01.01DocScrutinizer05and actually I pondered similar things about Nokia
20:01.42DocScrutinizer05about the FLIR in that s60 i'm not entirely convinced about the quality
20:02.05ndnihilthe lepton is actually supposed to be pretty decent
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20:02.22DocScrutinizer05but yeah, definitely a cool thing. I already have plans for my FLIR Neo900 addon
20:02.34ndnihilI've got a modded e4, which basically removes the firmware cripple on resolution (and adds a shitload of new features)
20:02.46ndnihilturns a $1k FLIR into a $3k FLIR
20:02.52DocScrutinizer05wow
20:03.04ndnihilhttp://www.eevblog.com/forum/thermal-imaging/flir-e4-thermal-imaging-camera-teardown/
20:03.22DocScrutinizer05thanks a lot
20:03.51ndnihilthough I seem to recall reading something about the newer units being patched against the modification
20:04.21DocScrutinizer05it has such note in first post, yes
20:04.36DocScrutinizer05well, 1.22 whatever that is nowadays
20:04.47ndnihilah, downgradable, so that's good
20:05.14ndnihilbut still some issues
20:05.22ndnihilglad I got mine when I did
20:06.49DocScrutinizer05LOL @ x-ray
20:06.49ndnihilbut yeah, the lepton in the s60 is supposed to be better than this sensor
20:07.00ndnihilwhich is pretty decent for the price
20:07.08ndnihilx-ray?
20:07.58ndnihilI mean, you do see -some- detail in the right circumstances, that you wouldn't otherwise in standard human vision wavelengths
20:08.19DocScrutinizer05the video in that link you gave
20:08.23ndnihilbut you'd stll be better off perving through a high quality camera with the IR filter pulled, and used in sunlight
20:08.39ndnihilah, I haven't read through that thread in years
20:09.06DocScrutinizer051:00
20:09.28ndnihilhah
20:09.38ndnihildude has fun toys
20:10.49ndnihilthat ellsworth chick has/had a SEM in her garage at some point
20:10.59ndnihilthat would be a lot of fun too
20:11.14ndnihilbut I do wish she'd focus on getting me my castAR
20:11.38amatusi know a guy with a SEM
20:12.10ndnihilI scan the academic/scientific auction sites every so often for them
20:13.11amatushttp://hackerfriendly.com/tag/sem/
20:13.39ndnihilgah, 2300x
20:13.41ndnihilI want
20:13.53ndnihilmy optical setup can only feed 800x into my D90
20:14.07ndnihilor was it 400x
20:15.20ndnihilfather in law wanted me to have a go at recovering his s3
20:15.35ndnihila year after he got into a pool with it in his pocket
20:15.39ndnihilhttps://old.ndnihil.org/micro/galaxyS3_vs_water/
20:16.18ndnihilthat was just the cmos cam for it, didn't bother with the nikon
20:17.12ndnihilthat was after a very gentle brushing with a soft bristled toothbrush
20:17.16ndnihilto get the corrosion off
20:17.27ndnihilknocked at least half those components off
20:17.43ndnihilI'm guessing the more corroded pads are what caused the final failure
20:19.03DocScrutinizer05yeah, that's what you get from water and PCB under voltage
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21:08.48ceeneahycka has done a few boards pretty dense
21:09.09ceenebut we've never calculated how much area is populated with components
21:09.33DocScrutinizer05good, we will need that for the final design, for proto_v2 the UPPER board can be of arbitrary size, to simplify layout
21:10.52DocScrutinizer05also proto_v2 has no SoC etc at all, we connect the protoboard to a BB-xM for that
21:11.52DocScrutinizer05so the layout should be relatively relaxed for proto_v2
21:12.39ceenegreat
21:12.50DocScrutinizer05the goal for proto_v2 is to electrically/logically verify all the new stuff we got
21:13.54ceeneminiaturization can come after that
21:14.01DocScrutinizer05exactly
21:14.25ceenehow many layers are expected for proto_v2 and final?
21:14.41DocScrutinizer05proto_v2 a 4-layer would be great
21:15.07DocScrutinizer05for final we expect to need at least 4 layers for LOWER and 8 layers for UPPER
21:15.43ceene4 layers is a moderately simple design
21:16.00DocScrutinizer05TI claims you could do the OMAP BGA breakout with 6 layers, but... meh
21:16.30ceenei know altium does some magic with bga footprints
21:16.42DocScrutinizer05that's highly appreciated
21:17.04ceenebut maybe that requires a more expensive manufacturing technology, class 8 vs class 7
21:17.41DocScrutinizer05that's exactly the point: for final we need to check what our PCB house can do
21:17.50DocScrutinizer05and for how much ;-)
21:18.07ceenewhere are you manufacturing?
21:18.27DocScrutinizer05tbh I have no clue where Nikolaus got the PCB from
21:18.38ceenei can provide prices for some boards we've done, just have to look at old receipts
21:19.08DocScrutinizer05those are prolly for a bazillion of boards
21:19.17ceeneoh, no
21:19.22ceenewe do very small batches
21:19.25DocScrutinizer05we only need 10 to start with, then later on 500 or 1000
21:19.30ceeneless than ten each time
21:19.34DocScrutinizer05ooh
21:19.36DocScrutinizer05ok
21:19.38DocScrutinizer05:-)
21:19.40ceenehttps://techdocs.altium.com/display/ADOH/Fanout+and+Escape+Routes fanning out bga on altium
21:19.57ceenebiggest drawback of our manufacturer is starting price
21:20.16ceenea new order is at least ~1000 euros
21:20.29DocScrutinizer05yeah, 1mm pitch
21:20.32ceenebut they do a pretty exhaustive verification of the design
21:20.37DocScrutinizer05we got 0.4mm iirc
21:21.25DocScrutinizer05yeah, those costs are expected
21:21.41ceenewell. altium doesn't care, it's just a matter of defining minimum line width and other constraints, such as via size, etc
21:22.15DocScrutinizer05exactly, and to get to know what is the min line width the PCB manuf can handle safely
21:22.29ceenethat's right
21:22.40DocScrutinizer05particularly in-pad vias, capped
21:22.48DocScrutinizer05buried vias, etc
21:23.53DocScrutinizer05I guess a in-pad via design is way more reliable than interleaved offset vias in a FPBGA
21:24.15ceenehttp://www.lab-circuits.com/en/index.php
21:24.33ceenethis is our manufacturer, i think their design rules are somewhere on the site
21:25.05DocScrutinizer05great
21:25.24DocScrutinizer05i'll ask Nikolaus about the same
21:25.27ceenethe one that populates the components is another company
21:25.39ceenefor bga we've been told no vias under pads
21:25.46DocScrutinizer05yeah, we have GC for that
21:25.55DocScrutinizer05o.O
21:26.08DocScrutinizer05only capped vias, yes
21:26.28DocScrutinizer05open vias, even plugged vias are an absolute nogo
21:26.43ceeneyep
21:26.55ceenehttp://www.lab-circuits.com/en/para_fabricacio_multicapa.php
21:27.12DocScrutinizer05\o/
21:29.26ceeneboards themselves are quite cheap in the end
21:29.36ceenefirst batch though is expensive
21:30.11ceenei'll try and find some receipts tomorrow for different circuits
21:30.21DocScrutinizer05thanks
21:30.45DocScrutinizer05I wonder if we get away with CLASS6 for final
21:31.25DocScrutinizer05don't see stacked microvias
21:31.42DocScrutinizer05well, they are a mess anyway, aiui
21:32.43DocScrutinizer05also don't see capped vias but I'm sure they can do this
21:33.05ceeneyes, no problem
21:33.33DocScrutinizer05well, actually I think it's 'plated vias'
21:33.37ceenei think they can do almost anything
21:34.46DocScrutinizer05yeah, the min track width and min via diameter and ratio are looking good, the rest is basically derived values
21:35.06DocScrutinizer05ratio up to 13 is extremely good aiui
21:36.17ceenewell, my n900 is crying out for power, so i should go to sleep and recharche myself too
21:36.26ceenerecharge
21:36.35ceenethe other thing sounds too french
21:36.43ceenerecharchè
21:36.48ceenei'm sure it exists
21:36.53DocScrutinizer05I should finally change that crying dieing HDD
21:37.12ceenei had one hdd that crashed miserably
21:37.20ceeneput them out
21:37.31ceenetwo weeks later it started working again flawlessly
21:37.37DocScrutinizer05wow
21:37.47ceenenever failed again... i won't ever understando how or why
21:37.58DocScrutinizer05mine has 24 bad sectors meanwhile
21:38.07ceenethat's not too bad
21:38.23DocScrutinizer05it's not, if those bad sectors where always there
21:38.30ceeneunless 24 more follow those, and over and over
21:38.46DocScrutinizer05it started with 12, then 18 then 24
21:38.52DocScrutinizer05iirc
21:38.58DocScrutinizer05during 2 days
21:39.04ceenethat's only an arithmetic progression
21:39.12ceeneit can go like that for a year
21:39.17DocScrutinizer05sure
21:39.46DocScrutinizer05I nevertheless will swap it for a RAID1(?) of two decens enterprise grade server disks
21:40.06DocScrutinizer05http://www.seagate.com/de/de/internal-hard-drives/enterprise-hard-drives/hdd/enterprise-capacity-3-5-hdd/?sku=ST2000NM0033
21:40.45ceenehttp://arstechnica.com/information-technology/2016/05/one-billion-hours-on-and-hgst-still-rules-the-roost-for-hard-disk-reliability/
21:40.54DocScrutinizer05alas I already bought them, learned about HGST only later
21:40.55ceeneyou may be interested in that
21:41.00ceenejust read it today
21:41.26ceeneoh, that's it
21:41.38ceenewell, this thing is gonna shut off, so night night!
21:42.12DocScrutinizer05https://www.backblaze.com/blog/hard-drive-reliability-stats-q1-2016/
21:42.15DocScrutinizer05n8 ceene
21:45.21DocScrutinizer05well, I hope the seagate will behave. If not, I got a RAID and a hardware shop nearby
21:45.43DocScrutinizer05...a RAID, and a...
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