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Found 5 results

  1. Hi friends, I have managed to read from two mpu6050 on DMP. Both sensors are fitted on a piece of board and are perfectly levelled. My problem is that when I tilt the sensors such that I increase/decrease Roll, the Yaw is changed, even when the sensors are not rotated on the z axis. Is it normal that rolling affects yawing? Furthermore, the change in Yaw for both sensors is not the same, and there will be a difference in yaw of 8 deg between the two sensors for a 45deg rolling. Thanks in advance, Hatt
  2. aniket_prasad

    MPU6050 calibration

    Hello guys I have been trying to get yaw values from gyro MPU6050 for my application. The application is basically to control a robot's movement with respect gyro readings. Recently I started facing some issues relating calibration of the gyro. In my code I am mapping all the values of the whole range of yaw (-180 to 180) to pwm range (0 to 200). So ideally the sensor should get calibrated every time at value 100. The situation I am facing is that it gets calibrated at 100 just 3 times out of 10. What may be the possible issue? I am attaching the code for reference. Thank you GYRO.txt
  3. Hi all, perhaps someone can help me to find a solution for my problem. I got the original teapod demo working together with the arduino code MPU6050_DMP6.ino. The plane on the processing sketch does exactly what I want to get out; the absolute position of the object in respect to the ground position (or point of view). All what i want is to get the angles for each axis of the object (yaw, pitch and roll) in realtime, just like i sit in the plane an look on an artificial horizon. All my attempts to convert quaternion to euer or YPR ended in solutions, where pitch an roll interact. So for example if i first roll about 30 degrees and then change the pitch angle from 0 to 70 degrees, the roll angle changes but there is no roll on the MPU6050. Does anybody have an idea how to solve this problem ? Thanks and regards Stefan
  4. Hello everyone! I am pretty inexperienced when it comes to computer programming, but I am using the program Jeff posted to use the yaw, pitch, and roll values (I really only need the yaw, though) in a feedback system for a UAV. I am using an Arduino Uno to run the gyroscope, and the program works fine by itself. My issue results from me putting the program on a timer so that it only reads the value every, say, 100 ms. Then FIFO overflow then gets triggered (which makes sense because the values are going in faster than they go out.) Is there any way to bypass this? I noticed one of the past iterations of the program read the values directly instead of from the FIFO buffer, but I didn't understand that version of the program, and I also don't think it had a "ypr" option. Is there an easy way to change the programming, or perhaps a better way to do it? Thanks for any help you can give!
  5. Hi I'm new to Arduino and I'm trying to use a 6DOF IMU (the MPU-6050) along with the i2cdevlib. I've been able to set the libraries and to execute a sketch in order to calculate the offset of the IMU starting from the raw data. Now I'm trying to execute the example code that i found on the github of the i2cdevlibhttps://github.com/jrowberg/i2cdevlib/blob/master/Arduino/MPU6050/Examples/MPU6050_DMP6/MPU6050_DMP6.ino setting the output in the YPR modeCode: #define OUTPUT_READABLE_YAWPITCHROLL with and without my offset parameters. In both sketches I found the same issue. The data on the serial shift from the initial position for 5-8 second showing an increment of several degrees (depends on the cases but usually there are 12-25 degrees) of the YPR angles without moving the IMU. The same thing happen with the Euler anglesCode: #define OUTPUT_READABLE_EULER I've tried also to execute the quaternion output modeCode: #define OUTPUT_READABLE_QUATERNION which i don't know how to read (I'm just started learning about this) but the value I read on the serial seems to stay "stable". I might solve this with a delay from the turn on which allow me to see of how much degrees the IMU "virtually moved" and then subtract that value to future reading (such as another offset) but i find this not usefull since I need the IMU to have the right angles on the turn on. Thanks for reading, hope someone could help me
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