I just got the scanner to recognize the GY-521. I didn't realize the Uno R3 has SDA and SCL pins (next to AREF). Once I hooked up to the dedicated SDA and SCL pins, the device is now recognized. Hopefully this helps somebody else using an Uno R3.
I just got the scanner to recognize the GY-521. I didn't realize the Uno R3 has SDA and SCL pins (next to AREF). Once I hooked up to the dedicated SDA and SCL pins, the device is now recognized. Hopefully this helps somebody else using an Uno R3.