#apertus IRC Channel Logs

off for a nap ... bbl

back now ...

I am a huge believer in mood boards for motion projects, but I have to question why.

Further, given the loose domain of the mood boarding, it feels like a wank. We could gather ten clips from ten different individuals in this forum and there would be _zero_ motif, thematic, or connection between them.

hi !

morning everyone!

hello!

good good, couple of minor website improvements finally completed that we had on the todo list for half a year minimum already ;)

I made a few minor changes to it and I still have to test it electrically (which will happen today)

is it possible to provide the reference voltage to the pin required for lowering the row noise as suggested by cmosis?

a dedicated wire to the one pin from the planned power supply?

btw, we got AN01 and AN03, please check if there are other ANxx available

Pieter included AN02 in the mail on November 19th

the mail was sent to you as well actually

will email it all together

sent

the sensor frontend design includes a DAC converter for the VTref and VTsig pins

perfect!

*doesn't draw

agreed

Bertl, as they presented it to us (the external voltage instead of builtin), it reduces noise by 25%, and some register changes reduce it 25% further

yes, I read that in AN01 :) the question is, how much current does it require? :)

hopefuly :-)

everything is possible, it could be 'just' a reference, or it could be the actualy reference supply to every pixel :)

btw you can ask them directly

we agreed to collect together all questions and send them to cmosis in regular intervals

we probably have a bunch of open questions, I'll check and update my list today

(i.e. the most recent one :)

I think they are updating the datasheets whenever we ask something, just to say "it's in the (new) datasheet"

just got a new(old) idea that we did not visualize yet

quick and dirty concept: https://cloud.gerade.org/public.php?service=files&t=88644302ffde4f6e5659627a3c8bbf32&download&path=/Axiom/axiom-modules-distance-extension01.jpg

regarding web pages: http://validator.w3.org/check?uri=www.apertus.org

<se6astian> a module to extend the distance between modules :)

ah, I see, because you always paste the 'download' url :)

good to know

since your two last emails, i guess we need to find proper connectors

maybe the PCI/104-Express Connectors can help us :)

first, do we allow the head to be opened to connect the recorder ?

what do you mean?

in other word, you remove the back of the head, or is it some lemo style connector that attaches to the recorder

http://www.samtec.com/standards/pc104-ebx.aspx

I think we need to reconsider this, if the idea is to remove the recorder on the field

there is this option, from gopro : http://www.cxmagazine.com/wp-content/gallery/gopro-hd-hero-lcd-bacpac-and-battery-bacpac/gopro-lcd-bacpac-80_tiny_acldb-003-480x299.jpg

PCI/104-Express looks like the best of both worlds

creating a metal part to cover the opening is quite straight forward and should also help with shielding between modules: https://cloud.gerade.org/public.php?service=files&t=88644302ffde4f6e5659627a3c8bbf32&path=/Axiom/open-modules-concept-cover01.jpg

if that metal part is the right metal :)

steel coated with tin would be a good choice

perfect

but they are all rather for rather high speed: 7-15 Ghz so we might be better of to find connectors that are meant to be used with slower speeds?

(for the differential pair version)

I wanted to know a bit more about the apertus project

but I did not find a list of task related to the project.

Thanks Bertl

I guess there is quite a number of tasks regarding mechanical engineering, especially with the camera body

but that is more planning and brain storming ATM

se6astian and philippe are working on the 'modular' concept from a design PoV

I guess it would help a lot to add the mechanical engineering know how to that :)

I would love to learn how you manage to work all together on this subject,

well, communication is key, the IRC channel is a viable part of that

list of specifications?

For specification you will have the power availability,

and the component implentation on module?

Maybe I am totally wrong and the developpement is not like that...

i.e. we know what the goal is, and we precisely know the details for the axiom alpha prototype

but for the axiom camera or even the beta prototype, we haven't decided anything yet

so to pick up your example, we know what data we need to transport between sensor and FPGA, we know the minimum required bandwidth, we know the expected electrical interface, but we do not have decided on a specific sensor, FPGA or connector for example

for example

you're welcome!

I do not know if you were in copy of mail...

but I don't really know how to beging

maybe

for specific tasks, if that is what you are looking for, it really depends on what you think you can do

and for that, I am really open to propositions

so what are would interest you most?

Is there still some work to do on mechanical support of camera?

I did notice a road and rail topic on forum...

and the differents ideas where interresting

Thanks for the informations, I will do my best to invest myself on this part of the project and to stay tuned on IRC. Good night!

se6astian: yes, please contact them again, and specifically ask for the peel-a-way connectors matching the CMV12k footprint, i.e. 4x30 @ 1.27mm and 2 x 4x30 @ 1.27mm with 16 rows space

just tested the second sensor FE, everything working as expected!

wonderful!

Bertl, congrat on the second board testing going well :-)

;-)

I think we should discuss what we want to connect between modules and how they connect to eachother

don't get me wrong, I'm glad that you pointed it out and some more folks get aware that this is something which requires some thought