I have a bunch of extra cameras, and have been thinking about installing them pointing in different directions on a new build.

I could see them working in a couple of different ways, but I don't really know how I'd go about doing either.

a) I could map some kind of switch on the quadcopter to one of the auxiliary radio switches / dials, so that I could toggle between cameras in flight. E.g. I could have a downwards facing camera that I could switch to when hovering or landing to see what was below me. This could be useful when trying to find a hole in the forest canopy to land in, for example.

b) Alternately, I could have some kind of mixer board that multiple camera signals feed into, which in the most basic version would just jam the camera pictures side by side into the output that goes into the VTX. 

Obviously I could also have multiple VTXs set to different channels as a super basic solution, but that'd mean fiddling with my goggles to change channels while in flight, which sounds like a nightmare. (And would be a bigger power draw too.)

Does anything exist that would enable either of these to work?

For option A, you can get a PWM switch/relay. It will allow you to switch inputs. Let me see if I can provide a link for you.

Ah OK. So something like this https://www.servocity.com/electronic-pwm...dual-relay or even this https://www.pololu.com/product/2806 ?

Looks like it would wire directly to the receiver, which seems fine. Is there something similar that can be controlled from the FC directly, to allow PPM/SBUS receiver setup?

The pololu is what I was thinking.

So depending on your FC, wiring will be different. But yes, you will be using SBUS to the FC. I don't know details of your FC or firmware you are running. I am assuming Betaflight.

If you have FC with extra motor output, then you can wire the PWM switch to the extra output. You will need to use servo tilt or channel forwarding and remap resource to servo. Once done, you can use a switch to output PWM. If you don't have extra motor output, then you will have need to remap something with a timer. Example an UART pin, LED_STRIP, CAM_C etc. Anyway, here is a video explaining everything.



Come back if you need more help. But you need to provide more details of your setup.

The Lumenier LUX F7 flight controller has built-in switchable dual camera inputs that can be switched via an AUX channel

https://www.getfpv.com/lumenier-lux-f7-u...gyros.html

And the user manual is here...

https://www.getfpv.com/media/wysiwyg/pro...Manual.pdf

@snow. Good find.

Thanks @SnowLeopard. Looks good, though I run dronin by preference so I'll give the Polulu solution a first shot (until Dronin get F7 support in place).

Matek F722-SE also supports dual camera inputs

http://www.mateksys.com/?portfolio=f722-se

Just ordered one for a 7in build

(28-Dec-2018, 09:47 PM)Apple Wrote: Matek F722-SE also supports dual camera inputs

http://www.mateksys.com/?portfolio=f722-se

Just ordered one for a 7in build

Another good spot I missed that one. Looks like this may start becoming a standard on some of the newer F7 boards.

Obviously no help to beatbox with him/her running dRonin firmware but it's still all useful information for others who might stumble across this thread

Just make sure that which camera and which of the switch you want to have. it is important to have the perfect devices as it will affect the flying also.