I am considering using the Arduino platform for a project, and would like some suggestions as to recommendations of the structure and modules needed for it. I am looking for the most cost effective way to produce this system, keeping it simple. Below is a description of the project, your input is appreciated.
PC control of up to 12 remote modules using addressable communications that will allow control of 3 outputs on each module, and an Audio playback shield containing 1gb of audio files that can be selected from the PC, or dedicated controler. The outputs will be relays, rated 10A at 120vac. The RF transcievers need to be multi-band programmable and have a range in open space of 1000m. All modules should have a rechargeable battery.
Please let me know what Arduino components you would recommend. I have played with Arduino before, but not up to date with the newest innovations and the project is somewhat time critical.