Wawa:
Which one. There are many.
With and without 3.3volt regulator.
With and without I2C level shifter.
Post a link to the one you have.How is the Nano powered.
Leo..
I2c is powered by the 3.3V side of the MPU-6050 breakout no level shifter is needed unless you add additional i2c devices that require 5V. The Arduino trips high when 3.3v is reached and the pull up resistors do their job nicely the Arduino never provides 5V to the i2c pins it just shorts the 3.3V pull up to ground when sending signals.
if you have an mpu-6050 breakout without the 3.3v regulator, 5Volts will destroy the mpu-6050.
Z