margaret

Presently i have 1 analogue camera positioned at my front door, the cct i built from a tv mag triggers on the presence of body radiation from the built in pir then records for a preset time on a common vtr then resets stopping the vtr rec mode untill the next trigger,... i have other camera's i would like to add to this system to cover the side & rear of the house, but would like to use a common monitor to survey the extra camera's i would add to the present system,.... does anyone know of a working cct to switch between say 3 camera's using digital or analogue switching, on searching the web for such a cct i did find an excellent american cct that used a multiplexer ic maxim 454, seemingly unavailable yet in the UK.


Best wishes to all in 2004.