I'm getting erratic heading readings with myFC1212-P/AHRSv2/Compass/Autopilot - giant shifts in readings with minimalrotation (yaw). The short version of the story is that, after extensivetesting, I really think the problem is in the AHRSv2, and not the compassitself.
The Longer version of the story is:
A got a new X650 V-8 about a week ago. In my first indoor test flight I wasgetting strong yaw with carefree mode. It seemed better without carefree. Withmy first outdoor flight I started in carefree mode and again had strangerotations. The stick lost all its correlation with the direction of the X650movement and I had a light crash. My immediate thought was that there wassomething wrong with the compass. I did a google search and found many resultsindicating that problems with heading lock and erratic yaws were most commonlydue to a motor out of alignment (out of plane.) But when I connected up to theXaicraft Center and checked the heading readings I found no correlation withdirection, not just a offset from true values, but readings changing wildly(for example) from 50 degrees to 350 then back to 10 or 180, all will just avery slight yaw movement. I checked my old X450 pro at the very same location,and the heading readings were perfect, so it wasn't magnetic interference atthe location causing the problem. Next I switched out the compass and cablefrom the X450 and put it into the X650, but I still was getting the erraticheading readings, thus ruling-out the compass and cable as the cause of theproblem. I tried to use the older AHRS (version 1) with the FS1212-P to try torule-out the AHRS as the problem. Unfortunately I got no heading readings whatsoevereven though the compass would calibrate and indicated that it was"plugged-in" I think there must be some incompatibility between theoriginal AHRS and the FS1212-P. If not, then something is wrong with theAHRSv2. I've literally tried changing everything on the X650, removed a UBEC,disconnected the Autopilot, changed the location of the compass and I even putmy electronics into a different frame (Xaircraft hexa.) Nothing has made adifference in the erratic heading readings. The only factor I can't rule out isa faulty AHRSv2.
This problem has been driving me crazy. Anyone have any ideas?
Thanks,
Russ
The Longer version of the story is:
A got a new X650 V-8 about a week ago. In my first indoor test flight I wasgetting strong yaw with carefree mode. It seemed better without carefree. Withmy first outdoor flight I started in carefree mode and again had strangerotations. The stick lost all its correlation with the direction of the X650movement and I had a light crash. My immediate thought was that there wassomething wrong with the compass. I did a google search and found many resultsindicating that problems with heading lock and erratic yaws were most commonlydue to a motor out of alignment (out of plane.) But when I connected up to theXaicraft Center and checked the heading readings I found no correlation withdirection, not just a offset from true values, but readings changing wildly(for example) from 50 degrees to 350 then back to 10 or 180, all will just avery slight yaw movement. I checked my old X450 pro at the very same location,and the heading readings were perfect, so it wasn't magnetic interference atthe location causing the problem. Next I switched out the compass and cablefrom the X450 and put it into the X650, but I still was getting the erraticheading readings, thus ruling-out the compass and cable as the cause of theproblem. I tried to use the older AHRS (version 1) with the FS1212-P to try torule-out the AHRS as the problem. Unfortunately I got no heading readings whatsoevereven though the compass would calibrate and indicated that it was"plugged-in" I think there must be some incompatibility between theoriginal AHRS and the FS1212-P. If not, then something is wrong with theAHRSv2. I've literally tried changing everything on the X650, removed a UBEC,disconnected the Autopilot, changed the location of the compass and I even putmy electronics into a different frame (Xaircraft hexa.) Nothing has made adifference in the erratic heading readings. The only factor I can't rule out isa faulty AHRSv2.
This problem has been driving me crazy. Anyone have any ideas?
Thanks,
Russ
