Current Server Time: 22:53 (Central Europe)

#apertus IRC Channel Logs

2018/03/05

Timezone: UTC


00:07
enigma_
left the channel
00:08
TofuLynx
joined the channel
00:11
TofuLynx
left the channel
00:30
slikdigit
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00:57
rton
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02:33
Bertl_oO
off to bed now ... have a good one everyone!
02:34
Bertl_oO
changed nick to: Bertl_zZ
02:38
mithro
Bertl_zZ: Would you be okay if I did a crowdfunding campaign for a run of professionally made pmod-debug boards you did?
05:14
supragya
joined the channel
05:48
supragya
BAndiT1983|away, have this link: https://github.com/supragya/libfuse-FrameServer
05:48
supragya
BAndiT1983|away, I will be trying out libfuse for our need here
05:54
supragya
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06:01
Davelister
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06:01
Davelister
changed nick to: Guest41740
06:52
Guest41740
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Davelister
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Davelister
changed nick to: Guest73998
07:24
sebix
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sebix
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sebix
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07:31
Guest73998
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07:53
BAndiT1983|away
changed nick to: BAndiT1983
08:07
sebix
left the channel
08:37
se6astian|away
changed nick to: se6astian
08:50
Bertl_zZ
changed nick to: Bertl
08:50
Bertl
morning folks!
08:51
Bertl
mithro: sure, but they probably need some rework ... last time I checked the mosfets were not available anymore
09:01
supragya
joined the channel
09:02
supragya
Hi BAndiT1983 , in train?
09:02
BAndiT1983
hi supragya, yes, on my way to the city of love ;)
09:02
supragya
well, I just made my first filesystem
09:03
Bertl
BAndiT1983: Paris?
09:03
supragya
using FUSE
09:03
BAndiT1983
oha, have you committed it?
09:03
BAndiT1983
yes, paris
09:03
supragya
no..
09:03
supragya
let me do something useful and commit
09:03
sebix
joined the channel
09:03
sebix
left the channel
09:03
sebix
joined the channel
09:03
BAndiT1983
just a small trip for 3 days, before final moving furnitures on friday
09:04
Bertl
have fun then!
09:04
supragya
paris - whoa... shoot some photos :)
09:04
BAndiT1983
supragya, started also to look at filesystem in C++17, for fun currently, as i don't have a clue about further steps for frame serving yet
09:04
BAndiT1983
i have my DSLR almost always with me
09:05
BAndiT1983
thanks Bertl
09:05
TofuLynx
joined the channel
09:05
BAndiT1983
ah, TofuLynx is also here
09:05
BAndiT1983
have you tried the loop?
09:05
BAndiT1983
checked it today again, works fine
09:05
supragya
BAndiT1983, I have quite a good feel of how frameserving would be done
09:05
supragya
Let me have a commit and then explain
09:06
BAndiT1983
alright, will clone your repo, so i can check it in parallel
09:20
TofuLynx
Hey
09:20
BAndiT1983
hi
09:26
BAndiT1983
changed nick to: BAndiT1983|away
09:26
BAndiT1983|away
changed nick to: BAndiT1983
09:27
TofuLynx
left the channel
09:33
TofuLynx
joined the channel
09:33
TofuLynx
Hey back again
09:33
TofuLynx
Good morning :)
09:34
TofuLynx
It's raining a lot here
09:34
TofuLynx
I'm soaked
09:34
TofuLynx
BAndiT1983 will test the new loop after lunch!
09:35
BAndiT1983
sunshine in germany
09:35
BAndiT1983
take your time, just inspecting ProcessingTest a bit, to see where it has logical problems
09:43
TofuLynx
Ok! If you find anything please do tell me
09:44
BAndiT1983
ok
09:44
BAndiT1983
your jump parameter is not adjusting width and height, tihs is possibly the problem with dual image
09:47
TofuLynx
Why isn't it though?
09:48
BAndiT1983
it sohuld also adjust here -> // Changes the resolution to half the width and height.
09:48
BAndiT1983
image.SetWidth(image.Width()/2);
09:48
BAndiT1983
image.SetHeight(image.Height()/2);
09:48
TofuLynx
Yeah
09:49
TofuLynx
If the jump is 4, the image width should be 1/4
09:49
BAndiT1983
as it still a prototype it's ok, just adjusted it by hand, will try now with quarter resolution, maybe we should just add enum class to allow only certain values, like FULL, HALF, QUARTER
09:49
TofuLynx
Right?
09:49
BAndiT1983
yes
09:49
TofuLynx
Good idea
09:50
supragya
Better than skip enum, have an int... (2's power)
09:50
TofuLynx
Don't think so
09:50
BAndiT1983
why? enum class can hold int
09:50
TofuLynx
Yeah
09:51
TofuLynx
And it's more resilient using enum class, as it avoids missclicks
09:51
BAndiT1983
you can write something like that enum class Quality : uint8_t {FULL = 1, HALF = 2, QUARTER = 4}
09:51
supragya
Why stick with just FULL HALF QUARTER when you can have something like skip=0 (Full), skip=1(half) all the way till we want..
09:51
supragya
just a suggestion
09:52
BAndiT1983
because that way, i can use int value to do skipping, without recalculation
09:52
BAndiT1983
there are just a couple of options, as at some point the image will be too small and blurry
09:53
TofuLynx
I didn't understand this: [09:52] BAndiT1983: because that way, i can use int value to do skipping, without recalculation
09:53
supragya
at resolution like ours, 1/8 will work too, even 1/16 for preview (it worked for HDTV format in AE).
09:53
BAndiT1983
Quality::QUARTER will give you 4 as value, see uint8_t behind enum class name
09:54
TofuLynx
Ah you meant that, ok
09:54
BAndiT1983
it was also possible in previous C++, but now it is strong-typed
09:54
BAndiT1983
image shows up, when using / 4, but it's cropped at the moment, will look for the source of problem
09:56
TofuLynx
It's cropped
09:56
TofuLynx
What about the scale?
09:56
TofuLynx
Is it vertically scaled wrongly?
09:57
BAndiT1983
it's just the height, have added pixel skipping for line, colors a bit wrong, but will debug it
09:57
BAndiT1983
unsigned int dataSize = _height * _width;
09:57
BAndiT1983
for (unsigned int index = 0; index < dataSize; index += pixelsToSkip)
09:57
BAndiT1983
{
09:57
BAndiT1983
_dataRed[dataIndex] = _outputData[index];
09:57
BAndiT1983
_dataGreen[dataIndex] = (_outputData[index + 1] + _outputData[index + _width]) >> 1;
09:57
BAndiT1983
_dataBlue[dataIndex] = _outputData[index + _width + 1];
09:57
BAndiT1983
dataIndex++;
09:57
BAndiT1983
if(index % _width == 0)
09:57
BAndiT1983
{
09:57
BAndiT1983
index += (_width * (pixelsToSkip / 2));
09:57
BAndiT1983
}
09:57
BAndiT1983
}
10:00
BAndiT1983
ah, it has to be not pixelsToSkip / 2, but - 1
10:00
BAndiT1983
but it's just a quick test, have to be tested more
10:00
TofuLynx
I see
10:01
TofuLynx
But I don't understand index% _width
10:01
BAndiT1983
seems to work, even with 8
10:01
TofuLynx
Wait
10:01
BAndiT1983
it's modulo, if index divided by width has no rest, then it skips a line (or multiple)
10:02
TofuLynx
I think I understand it now
10:02
BAndiT1983
just a test for end of line
10:02
TofuLynx
Yeah
10:16
supragya
BAndiT1983!
10:16
BAndiT1983
зеÑ_
10:16
BAndiT1983
yes?
10:16
BAndiT1983
sorry wrong keyboard layout
10:16
supragya
You might want to go into my repo now
10:17
supragya
Wait while image is pushed to remote
10:21
BAndiT1983
still pushing?
10:21
supragya
that raw12
10:21
supragya
net is 12KB/s IDK why
10:22
BAndiT1983
raw12??? why are you uploading it, can't just link to one on apertus page?
10:23
supragya
Your wish, I like to keep a backup
10:23
supragya
It is now committed
10:23
BAndiT1983
just saying
10:23
supragya
You might want to look into readme or repo page itself
10:24
BAndiT1983
doing it currently and pulling commit
10:24
BAndiT1983
it needs time as wifi on train is limited
10:25
supragya
Just committed a simple README change
10:26
BAndiT1983
hm, the loop seems to be doing a little bit too much
10:27
supragya
? me?
10:27
BAndiT1983
it's faster to read whole file into RAM and do the process
10:27
BAndiT1983
supragya, yes, your loop
10:27
BAndiT1983
i will try to fork and do pull request as an example later, if you want
10:27
supragya
I know... I just ported PiNGRaw12 code
10:28
supragya
I could have read it in one go
10:28
BAndiT1983
ah, we still have to discuss it, but on a private channel
10:28
supragya
[ we still have to discuss it, but on a private channel] - about what?
10:28
BAndiT1983
c++ challenge
10:29
supragya
now?
10:29
BAndiT1983
no, not prepared yet, but see some problems in your loop, mostly performance and maintenance
10:30
supragya
sure, need this... I am thinking of rewriting much of it.
10:30
BAndiT1983
just as summary: it can be a lot simpler
10:30
supragya
Roger!
10:31
supragya
were you able to run the FS?
10:32
BAndiT1983
just a moment, have to take a look if it pulled completely
10:32
supragya
make sure you have libfuse installed
10:33
BAndiT1983
libfuse-dev required in ubuntu
10:33
supragya
yes
10:35
BAndiT1983
"no such file or directory"
10:35
BAndiT1983
need to copy RAW12 somewhere first?
10:36
supragya
"no such file or directory" - line no
10:36
supragya
[need to copy RAW12 somewhere first?] - no it is self contained
10:36
BAndiT1983
will sent you the log in pm
10:36
supragya
please do
10:37
supragya
BAndiT1983, it is running alright
10:38
supragya
these errors are because not all stat functions are implemented
10:38
supragya
are you able to access from the other terminal the rawfile
10:38
supragya
?
10:38
BAndiT1983
nope
10:38
BAndiT1983
folder in tmp is empty
10:39
BAndiT1983
ah
10:39
BAndiT1983
now it works, i have to exit and enter again
10:39
supragya
use another terminal
10:39
supragya
leave that for LibFUSE to work
10:39
BAndiT1983
i know
10:39
supragya
BAndiT1983, success?
10:40
BAndiT1983
supragya, i know how to work with linux, by i was already in the folder, so fuse is not registering it, so file is only present after exiting and entering again
10:40
supragya
[i know how to work with linux] - I didn't mean that way, sorry
10:41
supragya
Btw, were you able to get the dump file out into main FileSystem and read it?
10:41
BAndiT1983
no problem
10:42
BAndiT1983
now i know what this is about, seeing log rolling further if i open file
10:42
BAndiT1983
yes, just used nano and fuse registered access
10:42
BAndiT1983
VLC would request data and we would serve it, seems like it's not that difficult
10:42
BAndiT1983
although difficult enough
10:43
supragya
That is why I was confident about FUSE
10:43
supragya
The thing is now we have to concentrate on one encode format in which serving is to be done
10:43
supragya
It for sure cannot be raw
10:44
BAndiT1983
AVI is ok
10:44
supragya
[VLC would request data and we would serve i] - using readcallback, exactly as anuejn said
10:44
BAndiT1983
it can be of very simple type that way
10:44
supragya
BAndiT1983, you can look at how simple this is by looking into C file
10:45
BAndiT1983
looked a bit through it, maybe we even don't need directory stuff, just things for a file
10:45
supragya
yes
10:45
supragya
it is mainly for ls
10:45
supragya
but we wont need it
10:45
supragya
A singly file is what we will serve
10:46
TofuLynx
What are you doing supragya?
10:46
BAndiT1983
would suggest to use cmake later, so we can switch build behaviour and libs between OCes
10:47
supragya
yes cmake!
10:47
supragya
need to learn that
10:47
supragya
TofuLynx, we are building a frameserver
10:47
TofuLynx
Ah!
10:47
TofuLynx
Okkie :)
10:49
supragya
BAndiT1983, given this.. what should I look for now?
10:49
BAndiT1983
i suppose at avi structure
10:50
supragya
Sure :)
10:50
BAndiT1983
changed nick to: BAndiT1983|away
10:50
BAndiT1983|away
changed nick to: BAndiT1983
10:51
BAndiT1983
supragya, just look for RIFF file format
10:51
BAndiT1983
as AVI is a subset of it
10:52
BAndiT1983
https://cdn.hackaday.io/files/274271173436768/avi.pdf
10:52
BAndiT1983
https://msdn.microsoft.com/en-us/library/windows/desktop/dd318189(v=vs.85).aspx
10:53
BAndiT1983
seems like our "movi" tag has to be "db" for uncompressed video
10:53
BAndiT1983
looks a bit like tiff format to me
10:53
BAndiT1983
or MLV
10:55
supragya
I have heard Uncompressed AVI is not that hard
10:55
supragya
BAndiT1983, have we moved on from VS now?
10:55
BAndiT1983
for a prototype, yes
10:56
BAndiT1983
maybe we can get something simple up and running first
10:56
supragya
okay
10:56
BAndiT1983
would prefer real multi-platform solution, but it's sufficient for now
10:57
supragya
libfuse has OSX port and some dokeny project for windows
10:58
BAndiT1983
i know, but that requires extra build setup in cmake
11:07
supragya
wild idea, how about FFMPEG for encoding somehow
11:09
BAndiT1983
this would be too much bloat
11:09
BAndiT1983
simple avi encoder is very sufficient
11:09
supragya
are we looking at building one ourselves
11:10
supragya
or from an available library
11:10
BAndiT1983
why not? is not that big
11:10
BAndiT1983
other libraries bring just too much other stuff with them
11:11
supragya
sure.. just give me some time
11:12
BAndiT1983
don't rush, take your time
11:12
supragya
Although, is it too early to discuss the final objectives of the proposal?
11:13
BAndiT1983
we still have some days left
11:13
BAndiT1983
so let us see how it progresses and then we will think of some goals
11:14
supragya
okay :)
11:15
supragya
another thing, how about H.264?
11:15
BAndiT1983
license?
11:16
supragya
I mean mp4 format?
11:16
BAndiT1983
focus on uncompressed AVI first, before even considering further steps
11:16
BAndiT1983
do we need it'S features?
11:17
supragya
no, but there are supposedly more H.264 encoder scripts available
11:17
BAndiT1983
?
11:17
BAndiT1983
why do we need h264=
11:18
BAndiT1983
*?
11:19
supragya
Will focus on AVI
11:19
supragya
Just asked as an alternative for there are many implemtations of it
11:19
supragya
available open source
11:20
BAndiT1983
yes, but why should we need it? it would just make the task more difficult and eat up performance for unnecessary encoding
11:20
BAndiT1983
if you write 24bit frame data to the RAM, final app should read it and thats it, no encoding, conversion etc. besides what OCcore does
11:20
BAndiT1983
fancy stuff will be implemented later, if required
11:21
supragya
ok
11:22
supragya
have to leave, exam prep (High Performance Computing)
11:22
BAndiT1983
good luck, have fun
11:22
supragya
glhf you too
11:22
supragya
bye TofuLynx
11:22
supragya
left the channel
11:23
BAndiT1983
ah, right, what about you TofuLynx? have you tried the loop?
11:51
BAndiT1983
off for now, will try to be back on later
11:58
rton
joined the channel
12:04
TofuLynx
Not yet, still haven't had lunch xD
12:14
BAndiT1983
changed nick to: BAndiT1983|away
12:35
futarisIRCcloud
left the channel
12:44
Bertl
off for now ... bbl
12:44
Bertl
changed nick to: Bertl_oO
13:26
supragya
joined the channel
13:52
BAndiT1983|away
changed nick to: BAndiT1983
13:56
supragya
BAndiT1983, reached Paris?
13:56
BAndiT1983
yep, just logged into my laptop to send some urgent mails
13:56
BAndiT1983
will leave for the city soon
14:09
BAndiT1983
supragya, any questions befor i leave for a bit longer?
14:09
BAndiT1983
*before
14:11
supragya
BAndiT1983, no I would be studying for most part today
14:11
supragya
However will look at AVI today
14:11
supragya
If time permits
14:12
BAndiT1983
alright, if you need help, then just ask, have general plan for AVI format already
14:12
BAndiT1983
so, off for some time
14:12
supragya
Would be looking into way to make AVI file for now... to keep it simple
14:12
BAndiT1983
changed nick to: BAndiT1983|away
14:12
supragya
Have a great time BAndiT1983|away
14:17
TofuLynx
Paris? Wasn't Stuttgart?
14:17
TofuLynx
supragya: how did the exam go?
14:19
supragya
well, exam for today... was horrible, I can tell you that
14:19
supragya
Have HPC tomorrow
14:21
nmdis_Iti
joined the channel
14:21
nmdis_Iti
Finally, the app changed my nick xD
14:22
nmdis_Iti
How many exams you have left supragya?
14:22
supragya
2/6 done
14:23
supragya
4 to go
14:23
supragya
Hi btw nmdis_Iti XD
14:24
nmdis_Iti
Hi xD
14:24
nmdis_Iti
I have 5 left
14:24
TofuLynx
Hey xD
14:24
nmdis_Iti
left the channel
14:25
TofuLynx
I have Data Analytics and Data structures test this Wednesday
14:25
TofuLynx
1 of three tests
14:25
TofuLynx
Hopeful it's okay
14:25
nmdis1999
joined the channel
14:26
nmdis1999
All the best TofuLynx :)
14:27
TofuLynx
Thanks :)
14:32
supragya
nmdis1999, jyada wilayati bandon se baat ho rahi hai... dekh rha hun mai!
14:33
supragya
Hamare exam ka kuch nhi?
14:34
TofuLynx
What is this
14:34
TofuLynx
Indian? xD
14:34
supragya
yuss
14:35
TofuLynx
Na boa! Ãs fixe supragya
14:36
supragya
which language
14:36
TofuLynx
Portuguesr
14:36
TofuLynx
Portuguese*
14:38
supragya
you cannot translate mine... i can translate yours though
14:38
supragya
try it
14:38
supragya
It's good it's cool
14:41
TofuLynx
left the channel
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TofuLynx
joined the channel
14:43
nmdis1999
left the channel
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nmdis1999
joined the channel
14:46
TofuLynx_
joined the channel
14:47
TofuLynx_
I said: It's okay! You're cool supragya! xD
14:47
supragya
[It's good it's cool] - google translate XD
14:47
TofuLynx_
xD
14:48
TofuLynx_
A índia é um país interessante, gostava de visitar um dia! :)
14:51
nmdis1999
left the channel
14:52
supragya
left the channel
15:17
TofuLynx_
BAndiT1983. I tested the new loop. It works now! But there's a strange horizontal line of pixels that's wrong
15:20
supragya
joined the channel
15:21
TofuLynx_
I will send a screenshot of this behaviour
15:22
supragya
link?
15:36
supragya
TofuLynx, TofuLynx_ , there?
15:39
TofuLynx_
https://imgur.com/a/6AUNy
15:42
TofuLynx_
here is it
15:42
TofuLynx_
sorry, slow internet
15:42
supragya
same here, dont worry
15:43
TofuLynx_
:')
15:55
TofuLynx_
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TofuLynx
left the channel
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supragya
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supragya
joined the channel
16:29
se6astian
changed nick to: se6astian|away
16:38
pusle
left the channel
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sebix
left the channel
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pusle
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Adi_
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nmdis1999
joined the channel
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Adi_
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17:15
nmdis1999
Read logs @supragya tum to phodoge hi exams ;)
17:16
nmdis1999
BTW My exams are draining my energy, hope I can clear this phase xD
17:17
nmdis1999
@TofuLynx: [A índia é um país interessante, gostava de visitar um dia! :)] that's sweet. We'll welcome you for sure :D
17:19
supragya
btw, that droid problem remember, nmdis1999
17:19
supragya
??
17:19
supragya
directorysync?
17:19
supragya
I am asked for an interview! yay
17:19
nmdis1999
Whoa! Congrats buddy D
17:19
nmdis1999
:D*
17:20
nmdis1999
You did put up loads of efforts :)
17:20
supragya
it's tmrw, figers crossed
17:20
nmdis1999
And you have an exam as well?
17:20
supragya
nmdis1999, You know how much load I am going through
17:21
nmdis1999
Yes, I do. But I know you'll do it. :D
17:21
supragya
Now a days, I sleep 4 hours only and then stay infront of computer, multitasking :)
17:21
supragya
hope it pays off
17:22
nmdis1999
It will , you've worked for it.
17:22
supragya
PM me your mail ID
17:23
nmdis1999
Okay
17:24
nmdis1999
This week will be tough for me as well, I am trying to work on T734(trying to make the tool from scratch) and exams.
17:24
nmdis1999
So my speed is reduced :(
17:24
supragya
have a look at the mail... see the PDF
17:24
supragya
and the vid
17:25
nmdis1999
Okay I will n
17:25
nmdis1999
rn*
17:30
nmdis1999
Watched it, it's amazing!
17:30
nmdis1999
How much time did it took you to write the code though?
17:30
supragya
see github
17:30
supragya
4 days
17:30
supragya
and ws working here too
17:31
nmdis1999
Ahan, they called you quite soon. I saw that and +exams ;)
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se6astian|away
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20:30
Adi_
Hello everyone, I am solving C++ challenge and I'm getting following image for red layer. Can you please give your feedback on the output..
20:30
Adi_
Image link: https://imgur.com/hOjs8PV
20:32
Bertl_oO
hello Adi_!
20:32
Bertl_oO
image looks wrong :)
20:33
Adi_
Thanks for the feedback Bertl_oO
20:34
Bertl_oO
there are some ImageMagick one liners on the wiki to debayer raw image data
20:35
Bertl_oO
you might want to adjust that to see what to expect per channel
20:36
Adi_
Okay. I will look wiki for it. Thanks :)
20:36
Bertl_oO
you're welcome!
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21:44
anuejn
se6astian: Bertl_oO : Do you have some spare assembled hdmi/usb3 modules, which you could sell, so we can try our expansion module slots?
21:57
se6astian
the usb3 module software is not finished yet
21:57
se6astian
but for hdmi everything is ready
21:57
se6astian
so I am sure we can arrange something
21:57
se6astian
can you share more insight into the state of developing?
21:57
se6astian
*development
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22:02
anuejn
yup
22:03
anuejn
currently, we are trying to comunicate with the sensor via i2c
22:04
anuejn
our main problem today was, that we faced fabrication issues with the main board to board connector due to the lack of soldering skills
22:05
se6astian
oh so you have manufactured hardware already, very nice
22:05
anuejn
but all needed hardware components have arrived and now we only need to produce a working pcb ;)
22:06
anuejn
moreover, we now have a working boot image (as you saw) with ci builds
22:06
se6astian
thats great
22:06
se6astian
some points I noticed so far:
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22:07
se6astian
1. dont forget you need an IR/UV cut off filter
22:07
se6astian
with dev kits we use screw on type filters to attach to lenses
22:07
se6astian
for the micro I would suggest glueing a smaller (which makes it much cheaper) one between C mount and sensor
22:09
anuejn
do you have any links to good sources of optical components?
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se6astian
2. I see in the AR0330CM datasheet that it uses 196 Mp/s (4-lane HiSPi or MIPI) - did you talk to Bertl_oO yet about how to interface these with the zynq properly?
22:09
anuejn
(also a optical low pass filter will be needed)
22:10
se6astian
from what I know MIPI is highly proprietary and I need to read up on HiSPi (sounds like fast SPI which is better I hope)
22:10
se6astian
I am not convinced an OLPF is required
22:11
se6astian
we do not currently use one in the beta and beside fine textures like bricks, fabric which can cause moire there are no issues so far
22:12
anuejn
2. no, not yet. but we want to use hisp (which is propriatary, too, but the specs appeared on the internet :see_no_evil: )
22:12
se6astian
I have no special source for optical components, the UV/IR filters we currently use are consomer products from Haida
22:12
anuejn
moreover, there is verilog code from altera, which can be used as a reference
22:12
se6astian
quite expensive, the 72mm diameter filter is around 70-90$ IIRC
22:13
se6astian
but you only pay for the size, for a C mount diameter it should be a tiny fraction of that
22:14
se6astian
http://optics-online.com/irc.asp
22:14
se6astian
as example
22:14
anuejn
we hope to be able to implement the hispi with the IOSERDES blocks
22:14
se6astian
Reflective IR cut-off filter for CMOS 10mm diameter
22:14
se6astian
17.50$ for sample
22:14
se6astian
cheaper in volume
22:16
se6astian
sorry I am off for today, but lets continue this chat soon!
22:16
se6astian
good night
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se6astian
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anuejn
good night
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22:42
Bertl_oO
what kind of soldering issues did you have with the connector?
22:45
Bertl_oO
also, as I wrote, I had a look at the board design, and there is probably some work required to make it perform as expected
22:46
Bertl_oO
I'm not sure my KiCad is showing your pcb design properly, but it looks to me like you are using a two layer board?
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