I’ve got a LOT of GPS units laying around. Mine and others alike.
If I power the Adafruit Ultimate GPS on a separate supply I get a lock, fast as you like. I can even put the Raptor (with 4.3" screen, LiPo, Ethernet and SD) just about right on top of this thing (seriously, we’re talking mm spacing) and maintain a lock.
So why then, is it the second this thing has anything to do with the Raptor power can’t I find a single Sat? None of my other GPS units do either (though I have one from GHI being overnighted).
I thought the power supply might just be crap, so I powered the unit separately connected the TX/RX and GND. That seems to work fine until the unit tries to send a message, then it loses the lock.
Any suggestions, at all, how I can get a lock on this thing while using Raptor? Kinda would like to have a working unit.