Issues changing address of Grove IMU 9DoF v2.0

Products & Technology Grove
#1

hi all,



I’m using 2 Grove IMU 9DoF v2.0 sensors in a project and I’m having issues changing the address of the 2nd sensor from 0x68 to 0x69.



It says all I need to do is connect 2 pads on the sensor, I’ve tried that but when I run the example in the library above through arduino, it tells me that the connection has failed and only returns 0 values.



I’ve tried this with 2 seperate sensors and had the same issue on both.



I’m at a loss of what to do now, any help or guidance would be greatly appreciated.



Thanks,

Chris

#2

Hi Chris,


  1. please use the i2c saner to check if arduino detect the i2c device and display the correct i2c address, such as below.

</s>I2C Scanner Scanning... I2C device found at address 0x69 ! done<e>

  1. If yes, please change MPU9250_DEFAULT_ADDRESS to MPU9250_ADDRESS_AD0_HIGH as below in C:\Program Files (x86)\Arduino\libraries\Grove_IMU_9DOF_9250\MPU9250.h. thanks.



    #define MPU9250_ADDRESS_AD0_LOW 0x68 // address pin low (GND), default for InvenSense evaluation board

    #define MPU9250_ADDRESS_AD0_HIGH 0x69 // address pin high (VCC)

    #define MPU9250_DEFAULT_ADDRESS MPU9250_ADDRESS_AD0_HIGH

[code]Testing device connections…
MPU9250 connection successful

calibration parameter:
0.00 0.00 0.00

Acceleration(g) of X,Y,Z:
0.34,0.63,-0.68
Gyro(degress/s) of X,Y,Z:
0.29,0.38,0.48
Compass Value of X,Y,Z:
14.65,12.30,-58.59
The clockwise angle between the magnetic north and X-Axis:
40.03
The clockwise angle between the magnetic north and the projection of the positive X-Axis in the horizontal plane:
51.58

[/code]