I want to make a robot that can track the direction of the transmitter that is controlling it, for example to aim a camera at the transmitter. The robot vehicle will be controlled by a 2.4ghz NRF24L01+ link from within about 40 meters away.
I have seen some fairly simple methods to do similar kinds of tracking by comparing the RSSI from two directional antennas, for example here: www.rcgroups.com/.../showthread.php
It seems that I might be able to do this with a pair of nRF51822 modules, because they have RSSI available. If so, is it possible for the nRF51822's to just listen for the RSSI of the NRF24L01+, without interfering with the controller link in any way? I know the NRF24L01+ can transmit to multiple receivers, but could the nRF51822 make use of the same signal?