Dual GPS

I'm using Pixhawk and added 2 GPS receivers however, only one of them is receiving signals. The first is pluged into the Serial 3 (GPS) port and the I2C port. The second is plugged into the serial 4 and 5 port. GPS_AUTO_CONFIG is set to 1. GPS_AUTO_SWITCH is set to 2. SERIAL3_BAUD is 57 and SERIAL3_PROTOCOL is 5. Same setup for serial 4 & 5. The second one works but the first does not. It has flashing lights but no sat sig. Anyone have any ideas? Thanks in advance.

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  • I plug 1 into GPS and the other into Serial 4/5 and they both work. Compass leads plug into Seial Port 1 and 2. No real benefit though as it is just as accurate with just 1 GPS. Old Photo here. https://www.wattflyer.com/forums/showthread.php?t=79492

    Part of a video where I sent my drone across country and landed at my buddies house several kilometers away right on the spot chosen on Google Earth. It nearly flew into a ridge on the way. https://vimeo.com/409669147
    2 x GPS' on a Quad? - WattFlyer RC Electric Flight Forums - Discuss radio control eflight
    Multi-Rotors - 2 x GPS' on a Quad? - I have been flying autonomously for some time now and have over 100 missions under my belt with no major upsets.…
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