I plugged my Mediatek GPS into the Remzibi OSD with an adapter making very sure the pinouts matched (apparently not sure enough, they didn't). The OSD didn't recognise the GPS but now when I plug the GPS back into ArduPilot everything on the serial monitor is small squares and I also can't upload to ArduPilot with the GPS connected dispite having a v2 shield.
Help please?
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I seem to have the knack as now both my GPS's (Mediatek and EM406) appear to be bricked. Neither will respond to commands, programming, etc and just output garbled stuff, the EM406 actually outputs nothing at all but it's LED is very dim presumably indicating that it's in binary mode. The Mediatek's battery has been removed as it was flashing at 0.5Hz (battery read 2.82V) but interestingly it still got a lock/LED went solid outside.
The problems may have arisen from the Tx/Rx wires being reversed when connected to the OSD.
I've tried Ken's reset (here), SiRFDemo's "Initialize Data Source","Switch to NMEA protocol","Switch to Sirf protocol", etc.
I have also researched & then tried everything I can find/think of in Real Terminal but neither respond eg. $PMTK001,101,0*33 and $PMTK314,1,1,1,1,1,5...........,1*2C, etc, etc.
Does anyone think these GPS's are rescuable or should I just throw them away and buy new?
http://code.google.com/p/ardupilot/wiki/MediaTek