I bought your IMU 10DOF - MPU6050 + HMC5883L + MS5611 card, but I do not understand what is the jumper “pullup” and how to use.
Have you the schematics for this card, which I did not found on your site?
Regards
QuercusPetraea
The schematics are not availabled on the site. The solder bridge is used if you want pull-up resistors on the board.
If you use a 5v microcontroller, you can enable this bridge and disable the pull-up in the Arduino code.