Some pics of the Probe Zone Pcb...The large chip in the centre (rhs pic) is the pic micro 16F876 which has 8k of memory. Im using quite a lot of its I/o. Small chips bottom right are opto isolators which isolate the signals to / from Homevision. The yellow capacitor looking devices near the rj45 sockets (at rear) are electronic fuses rated at 100ma . All the other chips are 4051 cmos 8 to 1 muxes....except for the serial chip which will be a max232a that will be installed into the empty socket top right. Only the I/o interface has been programmed at this point. If enough interest is shown I will consider writing some code for the serial interface..
Have now installed the new Probe Zone Hub Board and its been working for a few weeks now with no problems at all . I Have scheduled events programmed into Homevision which checks the status of appliances via the Probe Zone Hub + Monitors + probes and decides what action to take depending on the feedback status ... Now it does not matter how appliances are turned on / off as the video / led probes report the status back to the relevant Zone Monitor .. Whereas before when I was using Homevision flags to track the status of tv,s etc if someone didnt use the remote to turn appliances on or off the Flags did not reflect the true status of the appliance...
Next is to get a pcb done for the Probe Zone Monitor and maybe also the video and led probes............

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