Getting "No GPS" instead of "No Fix" in MP

Hi,

I'm switching form APM to Pixhawk now and I'm surprised with GPS troubles. Any of 2 GPS modules I have (one with compass, other without) work fine with APM or connected to PC, but when connected to PX indoors HUD shows "No GPS" instead of "No Fix". When I test outdoors HUD shows "No GPS" and then "3D Fix". I thought it to be minor bug and started test flights, but found GPS to fail in-flight. I'm sure there was no power loss etc, power and fix leds were showing normal GPS run, but I got failsafe and had to land in manual mode. I attached flash log. Could anyone explain problem?

2015-06-13-12-19.log

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Replies

  • The APM uses a 5 pin plug and the Pixhawk uses a 6 pin plug. I didn't realize this right away as the 5 pin plug went into the 6 pin connector on the Pixhawk but the GPS was problematic. After changing to a 6 pin wired correctly the GPS worked as expected.  

    • I used 6-pin plug for PX and 5-pin for APM. This is not matter.

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