Perfect. Thanks. On Thursday, December 7, 2017 at 12:34:05 AM UTC-5, [email protected] wrote: > > Hi, Did you check this?- > https://github.com/StrawsonDesign/Robotics_Cape_Installer/issues/53 > > > On Sunday, November 26, 2017 at 8:02:18 PM UTC+5:30, D Sellers wrote: >> >> Same issue here. Raw readings seem to be correct, but the DMP mode of >> the API the heading (raw and filtered) just drift. >> >> On Saturday, October 14, 2017 at 12:29:44 PM UTC-4, Pierce Nichols wrote: >>> >>> Hi all, >>> >>> I already posted this to the Beaglebone group, but I noticed there's >>> lots of traffic here about the Beaglebone Blue as well, so I'm cross >>> posting in hopes of finding an answer. >>> >>> I'm having trouble getting the compass heading to work correctly in >>> DMP mode on my Beaglebone Blue. I'm running with the default >>> roboticscape overlay. >>> >>> -- I calibrated the magnetometer and gyroscope as directed here: >>> http://www.strawsondesign.com/#!manual-imu >>> >>> -- I ran the rc_test_imu program and confirmed that the magnetometer >>> is working correctly. >>> >>> -- I ran rc_test_dmp -m -c -t. When I did this, I noticed that the raw >>> compass was stuck near either 0, +180, or -180 degrees, jumping >>> between those points as I rotated the Blue around the Z axis. When >>> left still, the filtered compass always converged to the value of the >>> raw. I also tested to make sure the pitch and roll angles were sane, >>> and they were. >>> >>> I tried rotating it around the X and Y axes as well as using the -o >>> option to switch the IMU orientation. This did not materially change >>> the compass behavior. Trying it without the -m or -c switches produced >>> no change in behavior. >>> >>> It behaves as if the magnetometer was simply not being turned on in >>> DMP mode. I double-checked the source code of rc_test_dmp and >>> recompiled it to see if the bug was there, and got the same results. >>> >>> Any suggestions for what I can try next? My application is such I can >>> get away with processing the raw values to get a compass heading, but >>> it would be nice to be able to use the sensor fusion. I filed a github >>> issue as well. >>> >>> -- >>> Pierce Nichols >>> Principal Engineer >>> Logos Electromechanical, LLC >>> >>
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