I have a project at initial feasibility phase which I desperately need some technical help with. I have a PC which I want to act as a central controller for a number of remote devices. There will be between 15 & 40 of these semi-permanent ground mounted units. Each device will be a maximum of 70m away from the PC & 0-10m away from its nearest neighbour. I'd like them to be wireless, so 2.4Ghz radio is my first avenue of investigation.
Q1) Can a PC act as a transmitter (someone on MSUK-forum
suggested Arduino+Xbee) to talk to remote receivers?
I would like to either create a text file with the unique frequencies of each device (easy if they're all fixed), to be read by the S/W on the PC *OR* somehow register each device as it 'pairs' (bonds? sorry don't know the terminology) with the PC.
Q2) Is it possible to detect/store the ID of each device if they're using Zigbee/mesh based comms (& what format is it)?
For each 'session' the PC would send the state it wants the device to be in, when the device is later activated, there are 4 states currently.
Q3) Does having 4 states per device mean it needs 4 channels or could I make do with 1 & just send 1-4 'pulses' or maybe 4 diff. lengths of signal?