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Hi

I have trouble with my x-y Gyro readings. I’ve got the new APM with an IMU Shield bought at buildyourowndrone.  When I connect it to hk gcs the x-y gyro readings drift away.  Sometimes it is drifting slowly and is reacting to movements; sometimes it drifts fast (like 60 degrees in 5 seconds) and hardly reacting to movements. As this sounds much like a soldering error, I reflowed my solder connections (twice) but still getting errors.

I tried to measure my connections (from header to the destination, for example from header to CLI / flying switch). The ones I measured were good, although there were some I don’t know where they are leading. I looked up in the EAGLE files, but it seems to be an older layout and not every pin connected (?) Is there another plan where I see where I can measure the remaining pins?

If the two boards are together and I measure form solder connection to solder connection, everything is fine.

Currently I am running only the APM with Shield, no gps or xbees. I am using APM2.012 with minimum config:

#define GPS_PROTOCOL GPS_PROTOCOL_NONE

#define GCS_PORT      0

#define GCS_PROTOCOL GCS_PROTOCOL_MAVLINK

I did reset the EEPROM, IMU test in CLI looks the same.

As I only have a simple magnifying glass, I am not able to see whether to gyro connections are ok.

Any advice would be greatly appreciated.

Thanks