i know there are a few radio hams on here, and other knowledgeable people when it comes to electronics and the like,
i've got a cctv system in my aviary, the dvr is located about 30 feet from the house, video is sent to the bedroom and living room tv via a length of RG6,
basically i want to use a PTZ controller in either location (bedroom or living room) without having to faff about with wires,
standard way is to run some twisted pair wire from the back of the ptz controller to the cams, but i cant do that really as i want to be able to move the ptz controller about with ease, and not faff about changing wires over, fitting and removing terminating resistors and all that.
So i want to send the ptz control signals wirelessly, the ptz signals are sent using RS485, at 9600 baud,
ideally i'd like to be able to buy a couple of small radio modules, connect the data out from the ptz controller to the data in pins on one module, apply power, and at the other end, data out to the data in on the cameras and power, and have it work... with a little setting up i guess to set the baud rate etc.
searching the net i can find lots of hits for radio telemetry solutions, but they are the 5 grand systems used on those wireless cctv cameras put up outside trouble makers homes by the council, and send the video back as well as relaying the ptz signal and work over many kilometers, or possibly modules that might work, but from china with limited documentation on them,
i need basic ptz signals sent one way over about 50 feet max, and as cheap as possible, and if possible using modules bought in the uk,
the ptz controller runs on 12 volts, and i will put in batteries to get that voltage, i imagine a radio modem type thing will want 5 volts, so no probs putting in a regulator for that,
Any help gratefully appreciated.