SDA and SCL problem with MEMS I have a simple question to ask you about SDA and SCL pins.
I have a gyro and I use these 2 pins to make it work; how can I use an accelerometer combined to a Gyro if these 2 pins are used? I should need another 2 SDA and SCL pins for the accelerometer... Tell me that I don't need to buy an IMU :D 

EDIT: I'm using Gyro LG3D20H from Adafruit, reading gyro values each 10 ms.
I2C is designed to have multiple devices connected. Assuming the gyro and accelerometer have different I2C addresses they can both be connected to the same SDA and SCL pins.

For more information see http://www.gammon.com.au/i2c

Naturally you can only "talk to" one at a time. You may need pull-up resistors on both SDA and SCL, unless the hardware already has them.