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by rkinch
Sat Nov 07, 2015 4:44 pm
Forum: Official Foundation Display
Topic: Perfect fit for display rear enclosure: Hammond 1591XXE
Replies: 6
Views: 3262

Re: Perfect fit for display rear enclosure: Hammond 1591XXE

Well done! You attached the box on reversed (backward mounting) from what I had imagined, but that works even better in several respects, if you have the ability to make random shaped cuts in the plastic box bottom, instead of just Velcro or drilling holes for forward mounting. Your method also pres...
by rkinch
Thu Nov 05, 2015 7:17 pm
Forum: Official Foundation Display
Topic: Corner Radius
Replies: 2
Views: 1675

Re: Corner Radius

The official drawing does not give the corner radius. See my enhanced summary drawing, which reports my specimen measurement of 6.5mm corner radius: http://www.truetex.com/raspberry_pi_display_dimensions.pdf http://www.truetex.com/raspberry_pi_display_dimensions.png If you are designing an enclosure...
by rkinch
Fri Oct 30, 2015 6:46 pm
Forum: Official Foundation Display
Topic: Perfect fit for display rear enclosure: Hammond 1591XXE
Replies: 6
Views: 3262

Perfect fit for display rear enclosure: Hammond 1591XXE

I was astonished to just discover: the Hammond 1591XXE electronics box is a lucky near-perfect fit (!) to enclose the rear of the Raspberry Pi 7-inch touchscreen display: http://www.hammondmfg.com/pdf/1591XXE.pdf http://www.amazon.com/Enclosures-Boxes-Cases-7-6-Black/dp/B00HKIXNGI I found that by si...
by rkinch
Thu Oct 29, 2015 2:29 pm
Forum: Official Foundation Display
Topic: Display Dimensional Drawing
Replies: 1
Views: 2583

Display Dimensional Drawing

I prepared this new CAD model and dimensional drawing to facilitate making enclosures or panel-mounting the Raspberry Pi 7-inch display: http://www.truetex.com/raspberry_pi_display_dimensions.pdf http://www.truetex.com/raspberry_pi_display_dimensions.png This is based on (but simplified from) the of...
by rkinch
Mon Sep 23, 2013 6:20 pm
Forum: Camera board
Topic: Adapt RPi camera to round cable (not flat flex) ?
Replies: 72
Views: 39357

Re: Adapt RPi camera to round cable (not flat flex) ?

Splendid idea. Definite need for a round cable with connectors.

May I suggest using the Type C or Type D miniature HDMI connections, rather than the full-size Type A?
by rkinch
Sat Jul 20, 2013 2:32 pm
Forum: Camera board
Topic: M12 lens adapter for camera module
Replies: 80
Views: 77761

Re: M12 lens adapter for camera module

So if anyone has tested any mounts that might be listed at m12lenses let me know. I have looked at all of them I can find anywhere, and sadly none are a direct fit. The camera provides 21mm hole spacing (why?) while the closest stock mounts are 20mm and 22mm. Even if you found a 21mm mount, it woul...
by rkinch
Wed Jul 10, 2013 9:51 pm
Forum: Camera board
Topic: Frame synchronisation
Replies: 82
Views: 34977

Re: Frame synchronisation

jamesh wrote:There are about 10 people at most on here so far discussing synchronisation. That a very small market ... not worth doing ...
And one of them an unlovely troll.

I'll just shuffle down now to my exile at the bottom of the wishlist.
by rkinch
Mon Jul 01, 2013 7:39 pm
Forum: Camera board
Topic: Frame synchronisation
Replies: 82
Views: 34977

Re: Frame synchronisation

You are *such* a concern troll. ... Please do not bring up the subject again. Ouch. I'll admit to being more persistent than is welcome. But not to the insincerity of a troll. Synchronising of a capture to external events is easy - plumb in a control to a GPIO. That provides *asynchronous* event or...
by rkinch
Sat Jun 29, 2013 5:23 am
Forum: Camera board
Topic: RPi Camera issues and status
Replies: 47
Views: 29028

Re: RPi Camera issues and status

jbeale wrote:The lens thread size may be 6 mm x 0.5.
My measurement is M6x0.35.
by rkinch
Sat Jun 29, 2013 5:14 am
Forum: Camera board
Topic: Frame synchronisation
Replies: 82
Views: 34977

Re: Frame synchronisation

Don't expect other people to do your job for you for free. Of course, I don't expect any such thing. But shutter control and flash sync are fundamental to still photography, all the way back to daguerreotypes. The OmniVision chip properly provides these functions. So I don't know how else to charac...
by rkinch
Fri Jun 28, 2013 4:09 am
Forum: Camera board
Topic: Frame synchronisation
Replies: 82
Views: 34977

Re: Frame synchronisation

The STROBE and FREX might have been useful for triggering and exposure control. Yes, sad that these features are unusable, as it rules out many valuable applications of an otherwise fine camera. Thank you for the details on the connections. Good for us that you had this donor module, and the abilit...
by rkinch
Thu Jun 27, 2013 9:19 pm
Forum: Camera board
Topic: Frame synchronisation
Replies: 82
Views: 34977

Re: Frame synchronisation

jbeale wrote:... it's hard to guess what signals were left in and what was not.
Clearly someone should sacrifice their camera and unsolder the BGA to ID what's connected to the ribbon. For some reason this is held as an important secret.
by rkinch
Wed Jun 26, 2013 4:38 pm
Forum: Camera board
Topic: Proto Armour for Raspberry Pi and Camera
Replies: 17
Views: 5843

Re: Proto Armour for Raspberry Pi with Internal Camera Mount

If you are replacing the existing camera lens with a new lens, how do you ensure the camera chip is exactly normal (perpendicular) to the lens axis? My M12 lens adapter design optionally nests onto the bezel on top of the stock lens receptacle and pushes against it, squishing the sticky elastomeric...
by rkinch
Wed Jun 26, 2013 4:10 am
Forum: Camera board
Topic: Proto Armour for Raspberry Pi and Camera
Replies: 17
Views: 5843

Re: Proto Armour for Raspberry Pi with Internal Camera Mount

tskwara wrote:protoArmourPiCamera.jpg
Yeah, that's the idea.
by rkinch
Tue Jun 25, 2013 4:00 pm
Forum: Camera board
Topic: Proto Armour for Raspberry Pi and Camera
Replies: 17
Views: 5843

Re: Proto Armour for Raspberry Pi with Internal Camera Mount

With a little camera sensor surgery and a custom CS lens mounting plate, maybe something interesting could be fashioned? If you were to provide an optical accessory attachment feature centered over the lens port, such as a simple bolt circle, then you could provide something optional like an filter...
by rkinch
Tue Jun 25, 2013 1:49 pm
Forum: Camera board
Topic: Proto Armour for Raspberry Pi and Camera
Replies: 17
Views: 5843

Re: Proto Armour for Raspberry Pi with Internal Camera Mount

The original Proto Armour is superb, and this looks to be likewise for the camera module option.
by rkinch
Mon Jun 24, 2013 1:40 pm
Forum: Camera board
Topic: low-level interfacing to OV5647
Replies: 98
Views: 38497

Re: low-level interfacing to OV5647

So if I break the SCL and SDA lines ... can I not have true manual exposure? Your inelegant man-in-the-middle effort is nevertheless expertly exquisite. Can we not *somehow* just get you access to the proprietary bits instead of resorting to such heroics? Some way to get people of your capabilities...
by rkinch
Sat Jun 22, 2013 9:28 pm
Forum: Camera board
Topic: low-level interfacing to OV5647
Replies: 98
Views: 38497

Re: low-level interfacing to OV5647

Camera quality is a massive selling point for SoC's, worth billions. Companies like Broadcom, Qualcomm etc are not going to give that away. Good for them. May they enjoy their well-earned $billions. Thus proceeds the ancient, dismal economics of the computer biz. RPi depends on Linux, which was an ...
by rkinch
Sat Jun 22, 2013 5:17 pm
Forum: Camera board
Topic: Graphical interface for raspistill
Replies: 18
Views: 25932

Re: Graphical interface for raspistill

sixbacon wrote:It works when running headless over ssh – a main driver for writing it.
Nice. Thank you.
by rkinch
Sat Jun 22, 2013 5:15 pm
Forum: Camera board
Topic: low-level interfacing to OV5647
Replies: 98
Views: 38497

Re: low-level interfacing to OV5647

That's some impressive examination and analysis.
jbeale wrote:Could possibly access additional modes (eg: real manual exposure)?
So you would resort to this intrepid level of hardware hackery because the GPU is closed? Maybe we should be pleading for an open GPU.
by rkinch
Tue Jun 18, 2013 9:24 am
Forum: Camera board
Topic: Working Fisheye Lens?
Replies: 101
Views: 47835

Re: Working Fisheye Lens?

jbeale wrote:Would like to know where to get a wide-angle converter worthy of the R-Pi camera's resolution.
Woefully impractical as a Galilean attachment. You'll have to remove the stock lens and substitute something proper like an M12 fisheye lens.
by rkinch
Mon Jun 17, 2013 8:38 pm
Forum: Camera board
Topic: Alternatives or replacements for camera flex cable?
Replies: 149
Views: 141335

Re: Alternatives or replacements for camera flex cable?

Don't know why your camera locks when you touch it - I've never had that problem. Let me be clear that I'm not faulting the camera module here. By "touch" I mean actually making a lot of clumsy contact with the board conductors while awkwardly hand-holding it on a lab workbench instead of using a p...
by rkinch
Mon Jun 17, 2013 4:35 am
Forum: Camera board
Topic: Alternatives or replacements for camera flex cable?
Replies: 149
Views: 141335

Re: Alternatives or replacements for camera flex cable?

So if the noise pattern from extended cables is single pixel dropouts- even a fairly large number of them- you may never see it in the final output, due to noise reduction algorithms smoothing it out based on neighboring pixels. MIPI CSI-2 goes over this cable, correct? Which is serial digital with...
by rkinch
Sat Jun 15, 2013 4:11 am
Forum: Camera board
Topic: M12 lens adapter for camera module
Replies: 80
Views: 77761

Re: M12 lens adapter for camera module

... some of the lenses I have are very fast and I didn't want to encounter vignetting on the casing. That typically won't happen because digital camera lenses should be designed with very different front vs back focal lengths, because digital sensors limit incoming ray angles. Even very short focal...
by rkinch
Fri Jun 14, 2013 9:11 am
Forum: Camera board
Topic: RAW output information
Replies: 236
Views: 94405

Re: RAW output information

So for proper RAW processing we would need to provide the lens shading tables? Yes, if you want to process to flatten the total response across the field, including lens falloff, then this is going to be different for each lens type, so the firmware and applications will have to be runtime configur...

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