HCC

Hello everyone, I previously used this library with an Arduino and it worked fantastic! I have since moved on to a variation of this library ported to the ArduIMU, since the ArduIMU runs the MPU6000, the SPI-variant of the chip, for a more compact form factor. That particular library was maintained by Fabio Varesano of FreeIMU, who unfortunately has passed away. After a previous snag of obtaining zero values from the quaternions, which was fixed by this post (if any of you are having the same problem) http://freeimu.varesano.net/node/17 , I got the library to function the way that I needed to. However, when I am using setXAccelOffset and setYAccelOffset, my accelerometer reading is displaying 32767 (2^15-1) and does not change with differing offsets nor sensor orientation. The interesting part is the offset calibrations worked fine for the Z-axis of the accelerometer. The gyroscope commands worked fantastic. The code for these functions looked identical, which makes me think its a compiler problem. I unfortunately do not have the tools nor the knowledge to delve more into this problem. I'm hoping that one of you have ran into this problem. I have little recourse right now. Thanks for reading.

First off, I would like to sincerely thank Jeff Rowberg for his work on writing the libraries for this chip and to whom that have any insights on this matter. I have an application in which I'm using the chip for posture measurement. As of right now, I am able to stream my desired information using a serial connection. For this application, I needed raw accelerometer, raw gyroscope information in addition to the quaternion DMP output for the sake of having redundant information. I noticed that I can obtain the raw accelerometer and raw gyroscope information from both the DMP library and the MPU library. I was wondering if it matters where I get this information from. (i.e. mpu.dmpGetAccel(&aa, fifoBuffer) vs. mpu.getAcceleration(&Ax,&Ay,&Az)). Also, does the full scale voltage settings (i.e. +/- 2g vs. +/-4g) apply to the DMP quaternion output, or is it a complete unknown. Thanks in Advance