I am trying to implement a Building Automation System where I would like to implement web-based or mobile based control of all ir/rf based devices like tv,a/c,sound system, etc. The PI will be placed in a centralized location in the building from which it transmits signals to all devices.
I have done thorough research on many possibilities. I can interface a IR transmitter with the PI and make it transmit signals but my problem is:
- I want higher range of transmission of signals since the PI is centralized which is not possible with IR without a extender/blaster (I hope)
- I am not sure if RF signals can control IR based devices. If it can, i dont know how.
- I went through facilities like Zigbee but i dont want to make the setup too costly for the users since Zigbee would need another receiver for every device (I hope)
Please help me on how to make this possible with any links to schematics (if possible). I dont mind using any technology as far as I am able to control the devices with nominal cost in a long range.
I am new to stack exchange. Hope I have not made any mistake in the process of asking this question. Thanks in advance