Comment by 1024son for The linux account you are using to run ROS probably does not have read-write permission for the device /dev/i2c-0. As a quick hack, you can issue this command:sudo chmod 666 /dev/i2c-0but this will need to be repeated if you reboot the machine.The better thing to do is to create a udev rule which will change the permissions on this device each time the machine boots.

Hi there, I missed out on that as I am still learning. I changed it to 41 and it seems to be working now when and there are values to be seen and changes when the sensor is being move when running `rostopic echo /imu/data`. Although rviz shows error for imu when subscribing imu to topic `/imu/data`. Thanks again.