In regards to the gyroscope, L3G4200D (Pololu - L3G4200D 3-Axis Gyro Carrier with Voltage Regulator), I am not too familiar with Arduino Pro Mini (5v, 328) or using any gyroscope sensor. I bought a Pro Mini due to its size. I have a duemilanove as well, where I did most of my learning. I have not purchased the gyroscope yet. Is it compatible with my pro mini as far as the libraries and being able to decipher the input from the sensor? If there is a library that works with Pro Mini and the gyroscope, could someone point me in the right direction? I know there is a library out there for UNO/Duemilanove and one for Mega but do not know if either one will work with the Pro Mini. I believe I don't want to use CS but SDA and SCL and I am not sure what SDO should be hooked up to if anything. I believe I can directly connect my 5v on my Pro Mini directly to the VIN. I want to use the gyroscope in a vertical water rocket. Basically, read when the rocket reaches apogee and starts to come down, nose first.
Edit: I have seen this tutorial, http://bildr.org/2011/06/l3g4200d-arduino/, but this is for duemilanove. I want to know if this can be applied to a Pro Mini (5v, 328) as well.