I need to know the approximate direction of the radio signal coming to my module, and I have to use very simple hardware and software for this. (Just a microcontroller and one module)
What came up to my mind was using more than one directional antenna with the module, each looking at a different direction, and have a rough idea of where the signal is coming from, by comparing the RSSI of the arriving signal for different antennas.
Is this possible? If so, how can the module switch between different antennas without using mechanical means?