I2C Device Addresses
I2C Address 0x1E is the 3-Axis Magnetic compass HMC5883L
I2C Address 0x53 is the 3 Axis Accelerometer ADXL345
I2C Address 0x69 is the 3 Axis Gyroscope L3G4200D
I2C Address 0x77 is the Pressure Sensor. BMP085