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Kailash

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  1. Hello, I have been trying to find a solution for this issue for a while now. Any info/suggestion/pointing in the right direction would be of great help. I am working on a project where I extract quaternions to deduce orientation using MPU6050 (DMP). I use the Arduino and libraries by Jeff Rowberg for calibration and reading from sensor. I have had a prototype working with MPU6050 mounted the standard way(gravity along Z) and it works fine. I then built a custom PCB with MPU6050 chip, which is then assembled to my project. The difference being, PCB is assembled such that the gravity is not along Z, it is along X. It doesn't work as I expected (like the initial prototype). When I turn on the device, I do some initial calculations to reference it (world to body coordinates conversion). This doesn't behave as I expect. My questions are, 1. Does the DMP or library assume that the gravity is always aligned along Z by default? 2. What steps should I follow to tell the DMP/Sensor that the gravity is aligned along X and not Z? I am not an electronics guy and haven't worked extensively with sensors. So, if what I ask is stupid, please forgive me. Please do share your thoughts. Many Thanks. Kind Regards, Kailash
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