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<Oksana>
Wow, MOXVAR vs tranzorbs sounds interesting. Is it possible to replace the former with the latter at home, post-purchase? Or is it something that cannot be fixed once a manufacturer makes the choice to go cheap? These things sound tiny...
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<DocScrutinizer05>
Oksana: it IS possible to replace the former with the latter at home, post-purchase
<DocScrutinizer05>
the gain however is questionable. MOX age with each surge and start leaking current but that will have impact only when the device stops detecting buttons or the like
<Oksana>
DocScrutinizer05: Sounds nice. Is it possible to do so after MOXVAR stops working? And how to see that is stopped working? For example, capacitors usually have a hole in them when they have broken down entirely/exploded.
<DocScrutinizer05>
yes
<DocScrutinizer05>
MOX simply sinter together and thus turn from VAR to resistor
<DocScrutinizer05>
the footprint for MOX should fit tranzorbs usually
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<Joerg-Neo900>
dang, sorry, connection problems
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<DocScrutinizer05>
MOX simply sinter together and thus turn from VAR to resistor
<DocScrutinizer05>
the footprint for MOX should fit tranzorbs usually
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* Oksana
guesses that multimeter would be able to tell the difference between varistor and resistor, should such a question arise; but diagnostics can be fairly difficult for multi-component devices such as mobile phones
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<izabera>
ohai
<izabera>
my boyfriend is a bit of a nerd and likes his baseband modems isolated from the rest
<izabera>
thus he invested in the neo900
<izabera>
i'd like to buy him a modern smartphone, or something close to it
<izabera>
and i'm considering the upcoming librem 5
<izabera>
what are your opinions on it?
<izabera>
i'm not as much of a nerd and i might need a dumbed-down explanation
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<enyc>
izabera: asknig good qusetion but wait for a bit ;p many peopl ecom and go on here
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<houkime>
ok, prepared a better transform from bareboard N900 scan to UPPER. After a bit of hunting down stray numbers discrepancy went down to around 0.02mm, should be ok for keyboard LEDs.
<houkime>
this transform used 6 holes in the pcb as anchors
<houkime>
more in line with rest of the transforms i use (but for some reason for bareboard i previously used worse one)
<houkime>
(transforming between different sources of geometrical info and making things align is probably the most tedious part of neo900 job)
<houkime>
(you basically need to work simultaneously with v1 board, with case scans, with wpwrak's contact microscope shots, and with optical shots of N900 original board)
<houkime>
(and also you need for UPPER to align connectors and stuff with LOWER, and kicad STILL doesn't have grouping to fix in place translation of one part relative to another)
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<houkime>
measured positions and angles of kbd leds. time for placement.
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<houkime>
KBD LEDs placed
<houkime>
ok, now to fix a keyboard layout
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<norly>
houkime: thanks for your work!
<houkime>
norly, appreciated.
<sixwheeledbeast>
+1
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<houkime>
Keyboard layout fixed and double checked.
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<izabera>
if i can bump my question from 10 hours ago, what do you guys think of the librem 5?
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<xmn>
I think the L5 is fine. Nothing crazy or really horrible, I do like that they give your the choice of Baseband. I think the pinephone is making this phones hardware harder to justify though.
<bencoh>
wait, which one is "harder to justify"?
<xmn>
pine is 200 runs everything L5 runs (I think) and even may have hardware switches.
<xmn>
So the L5
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<houkime>
first-pass crude placement of the UPPER components done.
<houkime>
(those components that aren't fixed by N900 compatibility requirements. Fixed ones were placed earlier and their position is exact)
<houkime>
For more serious placement will need to add missing courtyards for some footprints tomorrow.
<houkime>
Will be tedious since kicad doesn't know that RECTANGLES exist and are often used.
<houkime>
then there will be connector wires reassignments again probably, more exact positions of those B2B connectors and lot of other bureacracy before FINALLY i will be able to start serious routing of the LOWER.
<houkime>
The most final step will be tuning tracks for radio (right now i made them mega wide placeholders so that they for sure can be tuned later)
<houkime>
(so if you see a ridiculously wide track - it is sth that leads to antenna)
<houkime>
bye.
<enyc>
houkime: oooh prorgess sound =)
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