Using GY-521

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hi trying make gy-521 gyroscope work uno board. followed instructions given in
http://playground.arduino.cc/main/mpu-6050 running trouble.

i tried getting raw values sensor , that, downloaded
http://playground.arduino.cc/main/mpu-6050#sketch  , connected vcc 5, gnd gnd, scl a5, sda a4. showing me random values oscillating between 2 values. please help. complete newbie if guys keep simple.

so board using? can use 3v3.


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