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Constructing an automatic RCA video camera feed splitter

 
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nuckolls.bob(at)aeroelect
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PostPosted: Wed Oct 18, 2017 6:01 pm    Post subject: Constructing an automatic RCA video camera feed splitter Reply with quote
At 07:08 PM 10/18/2017, you wrote:
Quote:
--> AeroElectric-List message posted by: Alec Myers <alec(at)alecmyers.com>

I don’t think there’s an impedance problem - the inputs to the video switch IC are digital. So yes, I expect it would work fine to connect multiple pic outputs to one camera select input. You can have a camera that is displayed twice as often (or twice as long) if you really want, by using 2 PIC outputs connecting to one video select input. But you’d have to solder some green wires on the PCB to make it happen.

Unless the outputs are open collector, active low with pull-up resistor,
they cannot be wire-or'd. They have low impedance paths to either
Vcc or Vdd at all times.



Bob . . .

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