Looking at the link, it would appear that (at least at this stage of development) the system will do nothing other than detect other 'OpenFLARM' systems. It won't detect ADSB, FLARM, PilotAware or any other transmission. If the other aircraft isn't also carrying OpenFLARM, you simply won't see it.
I would be interested to know two things: does the GPS make use of the WAAS/EGNOS data; does it derive height purely from the GPS or does it also have a barometric sensor. It would appear that the GPS unit they use is GNSS only, so there is no access to other GPS constellations such as GLONASS.
Apart from the laudable open source approach, the strength of OpenFLARM must be the £50 price target, making it likely to be far more widely adopted than the competing systems. If collision warning is added, that would dramatically increase its appeal.
For me, a £50 unit with collision warnings would be worth the punt - until then I'll await developments.
Last edited by znww5; 18th March 2017 at 00:01.
Reason: Updated GPS info