Quote:
Originally Posted by AlexanderTheOK
I can personally vouch for the navx-mxp and WCP Spartan Board. While in my experience (which involves a sample size of exactly two of each board, and is thus in anecdotal territory) the navx has significantly less drift, neither drifts significantly anyways and thus the difference is meaningless.
|
The WCP Spartan board has a adxrs453 on it. The adxrs453 is an amazing chip. The drift should be 15 degrees/hour. The spec that the spartan board really wins on is the "Ultrahigh vibration rejection: 0.01°/sec/g". On previous KOP gyros, I saw significant coupling between acceleration and angle. When I had the robot accelerate hard, it would measure that it had turned. On the adxrs453, I've had no issues with that. 254, 1678, 971, 973 and 1323 all ran a previous version of the board last year and will be running it again this year.
The navx has a magnetometer, so it can detect the earth's magnetic field and use that to adjust. That will result in less drift as you noticed, if drift is the metric you want to use for heading quality.
(Full disclosure: I lead the design of the Spartan Sensor board and worked with WCP and others to make it legal this year and make it available for sale. Thanks a ton to RC for helping make this board available to everyone.)