IknowWho
Posts: 1
Joined: Sat Oct 14, 2017 9:42 am

Csi2 switch

Sat Oct 14, 2017 9:53 am

I want to use two camera stream at the neaely same time. Like,take a picture from one camera and 0.1 sec later, take another picture from other camera. I know compute module has 2 csi interface. However,I already designed some physical parts to normal pi 3 and dont want to redesign them.
My question is can use a csi2 switch? Whenever i change the stream do i need to wait for the expose time(nearly 1 sec)?

I am planning to use this switch: Fsa641.

http://m.onsemi.com/product?part=FSA641

ChrisGuy
Posts: 1
Joined: Tue Oct 17, 2017 6:11 pm
Location: Montreal, Canada

Re: Csi2 switch

Tue Oct 17, 2017 6:34 pm

May I suggest that you just use the Raspberry Pi Compute Module.

It has two cameras and two displays brought out to the connector pins.

There is also a development board with all the connectors that you can just plug in to.

6by9
Raspberry Pi Engineer & Forum Moderator
Raspberry Pi Engineer & Forum Moderator
Posts: 4544
Joined: Wed Dec 04, 2013 11:27 am
Location: ZZ9 Plural Z Alpha, aka just outside Cambridge.

Re: Csi2 switch

Thu Oct 19, 2017 8:51 pm

There are already a couple of products around using that CSI switch IC, eg http://www.ivmech.com/magaza/en/develop ... exer-p-109
Do remember that you have to consider the I2C bus to control the sensor too, and both sensors will be on the same I2C address.

The firmware will know nothing about your switching of the sensors, so if they are looking at different scenes then AGC and AWB will take a little while to settle.
Software Engineer at Raspberry Pi Trading. Views expressed are still personal views.
Please don't send PMs asking for support - use the forum.
I'm not interested in doing contracts for bespoke functionality - please don't ask.

HermannSW
Posts: 284
Joined: Fri Jul 22, 2016 9:09 pm

Re: Csi2 switch

Thu Oct 19, 2017 10:52 pm

OP switch is 0.35$ per unit, but only if you by 5000 ... and it has the problems 6by9 mentioned.
Compute model 3 does cost 35$ in Germany, with two Csi2 interfaces.
Pi camera multiplexer 6by9 pointed to does even cost 50$.
Two Pi Zero have two Csi2 interfaces as well, for 2*5$=10$ (or 20$ incl. shipping).
--> Raspberry camera / gstreamer / raspiraw (bookmark list):
https://stamm-wilbrandt.de/en/Raspberry_camera.html

Return to “Interfacing (DSI, CSI, I2C, etc.)”

Who is online

Users browsing this forum: pcmanbob and 15 guests