Working out with "MPU6050"

Other Hardware Sensors
1

Here is what I have done... I simply copied the simple Arduino MPU6050 code from Arduino Playground - MPU-6050 and pasted it in my arduino uno R3, which is interfaced with GY-521 IMU....
The connections made are:
vcc=5v
GND=GND
SDA=SDA //dedicated to arduino
SCL=SCL //dedicated to arduino

These are the values, which I'm getting...
InvenSense MPU-6050
June 2012
WHO_AM_I : 68, error = 0
PWR_MGMT_2 : 0, error = 0

MPU-6050
Read accel, temp and gyro, error = 0
accel x,y,z: 1804, 1256, 15184
temperature: 27.329 degrees Celsius
gyro x,y,z : -4933, 3934, 490,

MPU-6050
Read accel, temp and gyro, error = 0
accel x,y,z: 5580, 1760, 14720
temperature: 27.047 degrees Celsius
gyro x,y,z : -4620, 3913, 428,

MPU-6050
Read accel, temp and gyro, error = 0
accel x,y,z: 3392, -84, 16828
temperature: 26.576 degrees Celsius
gyro x,y,z : -4559, 4073, 308,

MPU-6050
Read accel, temp and gyro, error = 0
accel x,y,z: 5672, 352, 10612
temperature: 26.765 degrees Celsius
gyro x,y,z : -4640, 3980, 364,

MPU-6050
Read accel, temp and gyro, error = 0
accel x,y,z: 4392, 1068, 13724
temperature: 27.000 degrees Celsius
gyro x,y,z : -4496, 3749, 380,

What I'm not able to figure out is that the values are either correct or not....and why is this having this much fluctuation... The sensor is kept on my bed @stationary and though, it has these values....

I can figure out that I temp value is somewhat correct, but what about the gyro and accel value....

Please, help me to sort out this....

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2

Those values are the normal values.
This means the everything is working. Well done.

For some serious use, use the i2cdevlib.
The 'DMP' example uses an interrupt. Connect sensor board INT to Arduino digital pin 2.

http://www.i2cdevlib.com

A good guide: Guide to gyro and accelerometer with Arduino including Kalman filtering - Sensors - Arduino Forum

3

do you really think so...as there is large fluctuations of value even measured @stationary...
as u can see:
From reading 1, the accel x value is 1804 and accel y is 1256
but, in the consecutive second reading, its value is quite changed....

similarly, in others readings as well....there's large variations in any parameter from previous one

so, how should I evaluate these day in correct way...
Please, suggest me...I'm in critical stage to fix my project, via sensor...

Thanks!

4

do you really think so...as there is large fluctuations of value even measured @stationary...
as u can see:
From reading 1, the accel x value is 1804 and accel y is 1256
but, in the consecutive second reading, its value is quite changed....

similarly, in others readings as well....there's large variations in any parameter from previous one

so, how should I evaluate these data in correct way...
Please, suggest me...I'm in critical stage to fix my project, via this sensor...

Thanks!

5

I really think so.
Just ignore the first reading.

Take a look at the measurements and the conditions in the Playground page:
http://playground.arduino.cc/Main/MPU-6050#measurements

Your values have larger flucuations.
But the accelerometer has the largest fluctuation, and not the gyro. That makes me think that the sensor detects some vibration.
The sensor is very senstive for small vibrations. Could you try to measure in better conditions ? I think the fluctuations should be less in better conditions.

Normally the average of a number of samples is used. A filter like the Kalman filter includes some kind of averaging.