[Programming] IMU (Gyro and Accelerometer) Integration for Roboard

I'm currently working on IMU integration for a robot (Roboard) from my partner company...
The device I'm integrating is 6 DOF IMU from Sparkfun >>.

I have wrote C++ code for i2c communication but it's not working....
Cannot receive "Ack" from the device...
Well, of course it's not gonna work because the CPU board has i2c communication on 5V, and the IMU board operates on 3.3V...

Then, I got a logic level converter from Sparkfun >>.
Make sure you use 2 TX I/Os instead of using combination of one TX and RX.
Why?
Because I2C is "Bidirectional" and only TX on this board supports it!

By the way, here is the good information on I2C communication on Roboard.

• Roboard Sensors
• I2C Problem on ITG3200 Gyro
• I2C sample code for SRF08 and SRF10 Ultrasonic Range Finder
• I2C communication between Arduino and ITG3200