aromyaja
Posts: 2
Joined: Tue Sep 24, 2019 8:23 am

multiple cameras?

Tue Sep 24, 2019 8:45 am

Hi. I am currently working on a project which requires the use of 4 cameras. I have found a product by ArduCam which has the ability to connect 4 cameras to a single Pi. My main purpose is to have the cameras take a picture simultaneously next to each other just like how the Nishika 3d cameras take their photos. As i read in other forums, it is only possible to take pictures one at a time per camera. Since the raspberry pi is a new thing to me, I was wondering how I would execute this project of mine.
And if taking the pictures simultaneously is not an option, then simultaneously is fine as long as the latency is minimal.


https://www.arducam.com/multi-camera-ad ... pberry-pi/

pcmanbob
Posts: 6898
Joined: Fri May 31, 2013 9:28 pm
Location: Mansfield UK

Re: multiple cameras?

Tue Sep 24, 2019 11:24 am

As the pi only has one camera port you can only connect one camera at a time and hence only take on picture on one camera at a time.

what your add on board does is switch each camera to the port in turn so that you can take a picture on that camera,

this is explained on the linked page.

Operation

For proper operation, only one camera should be enabled at a time. In case of only one multi camera adapter board is used, driving Pin12 HIGH and driving Pin11 , Pin7 to LOW to enable camera A on the adapter board. Enable camera B, C and D, please refer the Table 2 for camera selection configuration. To disable all cameras on one adapter board, Enable 1 and Enable 2 signals should be toggled HIGH. Care should be taken that it is not allowed to drive the Enable 1 and Enable 2 LOW at the same time.
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jbudd
Posts: 987
Joined: Mon Dec 16, 2013 10:23 am

Re: multiple cameras?

Tue Sep 24, 2019 11:44 am

Four Raspberry Pi Zeros, each with a single camera?

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HermannSW
Posts: 1482
Joined: Fri Jul 22, 2016 9:09 pm
Location: Eberbach, Germany
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Re: multiple cameras?

Tue Sep 24, 2019 11:50 am

jbudd wrote:
Tue Sep 24, 2019 11:44 am
Four Raspberry Pi Zeros, each with a single camera?
That is one option -- some MIT students took 16 PIs with 16 cameras, see "Ultra high-speed imaging, capturing matrix style bullet time.":
https://www.raspberrypi.org/forums/view ... p?t=240442

Another option is to use two compute modules, they allow for 2 Raspberry cameras each.

Finally you can take any two PIs with Arducam stereo hat to connect 4 cameras
(Raspbbery v1/v2, or 3 monochrome global shutter or 13/16/18MP color rolling shutter Arducam Mipi cameras).
The two cameras at one stereo hat capture frames at same point in time:
https://www.raspberrypi.org/forums/view ... 3#p1524329
⇨https://stamm-wilbrandt.de/en/Raspberry_camera.html

https://github.com/Hermann-SW/Raspberry_v1_camera_global_external_shutter
https://gitlab.freedesktop.org/HermannSW/gst-template
https://github.com/Hermann-SW/fork-raspiraw
https://twitter.com/HermannSW

aromyaja
Posts: 2
Joined: Tue Sep 24, 2019 8:23 am

Re: multiple cameras?

Tue Sep 24, 2019 9:12 pm

HermannSW wrote:
Tue Sep 24, 2019 11:50 am
jbudd wrote:
Tue Sep 24, 2019 11:44 am
Four Raspberry Pi Zeros, each with a single camera?
That is one option -- some MIT students took 16 PIs with 16 cameras, see "Ultra high-speed imaging, capturing matrix style bullet time.":
https://www.raspberrypi.org/forums/view ... p?t=240442

Another option is to use two compute modules, they allow for 2 Raspberry cameras each.

Finally you can take any two PIs with Arducam stereo hat to connect 4 cameras
(Raspbbery v1/v2, or 3 monochrome global shutter or 13/16/18MP color rolling shutter Arducam Mipi cameras).
The two cameras at one stereo hat capture frames at same point in time:
https://www.raspberrypi.org/forums/view ... 3#p1524329
The picture I attached shows 4 raspberry pi zeros with a camera on each, i believe that are daisy-chained together? If i go that route, would they work as a single unit? Im not very familiar with how they would be coded together.
Attachments
ECDA79F6-9D00-4ED5-8899-F30833CEB77D.JPG
ECDA79F6-9D00-4ED5-8899-F30833CEB77D.JPG (58.25 KiB) Viewed 148 times

Pestevez89
Posts: 1
Joined: Sat Oct 12, 2019 7:29 pm

Re: multiple cameras?

Sat Oct 12, 2019 7:33 pm

I’m trying to build the same exact thing rn
But I’m not sure whether to use:
4 rpi zeros?
Or 1 rpi 4 and try to find a 4 cam module.

Looking forward to hearing more results from this project.

Cheers

ghans
Posts: 7873
Joined: Mon Dec 12, 2011 8:30 pm
Location: Germany

Re: multiple cameras?

Sun Oct 13, 2019 10:52 am

No, you will need 4 cameras AND 4 Raspberries for true simultaneous operation.

ghans
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