Author Topic: cable carrying display and camera streams  (Read 439 times)

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Offline andrea.longobardi85Topic starter

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cable carrying display and camera streams
« on: June 25, 2020, 11:02:14 am »
Hi All,

I am working on a project involving a PI-0 and a remote display and remote camera. For remote I mean 2 meters away.
Current solutions is to connect them via long flex cables...I though I could replace them with serdes and coax/Twisted pairs.
I also need to carry a little bit of power over the cable to power the remote unit...let's say something around 2.5W MAX.
How would you address that? My initial thought was to look for a dual coax cable, but cannot find a proper one...Second option would be to use a STQ (2 twisted pairs in shielded cable) but I need to find a way to carry the power...third option USB type C cable...
Any hints?

Thanks!
« Last Edit: June 25, 2020, 12:31:20 pm by andrea.longobardi85 »
 

Offline fcb

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Re: cable carrying display and camera streams
« Reply #1 on: June 25, 2020, 11:18:35 am »
Depending on the camera/display protocol (analog, digital?), you can send DC down the coax and AC couple the video - very common technique.
https://electron.plus Power Analysers, VI Signature Testers, Voltage References, Picoammeters, Curve Tracers.
 
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Offline andrea.longobardi85Topic starter

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Re: cable carrying display and camera streams
« Reply #2 on: June 25, 2020, 12:05:48 pm »
Display and Camera both with digital Input/Output. Also I need to carry the I2C bus across but this comes handy with a serdes.
I agree with power over coax, I wonder if I can do something similar with a twisted pair and the shield...
 

Offline skylar

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Re: cable carrying display and camera streams
« Reply #3 on: June 25, 2020, 05:06:45 pm »
Regarding the dual coax cable, you can look at using VGA display cables as they are 3x coax and ~10x 28AWG sideband conductors in a 6mm OD package.
 
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