I'm probably quite far from being able to program the stuff, i'm asking this more out of curiosity (and perhaps also in hope someone that got the knowledge and skills might like the ideas)




The first one is, can the IR transceiver be used as a limited "radar", by emitting pulses and checking when they bounce back? To detect them bouncing back would need to detect what is the background IR radiation and then see when there is a spike above that in the intensity. Is the hardware and software fast enough for that? Or perhaps it could work just by constantly emitting IR and measuring the intensity of IR picked by the sensor, when it increases, if it's not just a quick spike, it might mean there is an obstacle getting closer (could get confused by incandescent lights, windows in a sunny day and devices talking with each other with IR though)

If it does work, it would be interesting to evaluate the possibility of using it as a virtual cane for blind people, and also for anyone walking in the dark.



The other idea is, would it be possible to use the FM transmiter and receiver to turn the N900 into a metal detector, or perhaps have it work like a sensor like on theremins?