I posted on here a while ago that the wii motion plus gyro sensor had been cracked but didnt really get much buzz about it. Well one problem with using the M+ in addition to the nunchuck to supply the accelerometer is that both are on the same I2C address. I found a real easy way to get around that problem and now the possibility opens up for a $40 6 sensor system. Now, I love that diydrones is offering an IMU system now to play with, but being a poor college student I cant shell out over $100 bucks for a new toy. I believe using the nintendo parts serves a completely different crowd of people that want to experiment, on the cheap, and with something that they could easily use in a wii (if they have one) or sell for at least a 50% return. Check out my blog
for details and code.
Also, Im taking the plunge and making a kalman filtered 2d IMU in a little bit. It should be done soon. Many thanks to Jordi and the Kalman code he posted near the inception of this site. Its been helping me see a little more practically what a Kalman filter means.