So you think you want an accelerometer

[Gdeaver]

I believe the wii uses a ST Micro chip and not a Analog Devices. If I got the right chip, the output is digital SPI or I2C. Not good for our current RC or OI. Freescale, Analog devices, STM have analog 3 axis chips that would be of more use to our current electronics. There are several break out boards available from the manufactures or third parties. Most of the new chips are not in very friendly surface mount packages. Also most are lower voltage devices. Another problem to overcome.

[Dave Flowerday]

Originally Posted by Gdeaver

I believe the wii uses a ST Micro chip and not a Analog Devices.

The guys at Spark Fun tore one apart and identified it as the ADXL330. I suppose it's possible that Nintendo changed to a different vendor at some point but I doubt it.

[Gdeaver]

I based my statement on a press release from ST Micro. Maybe there are more than one version and supply for the wii controller accelerometer or ST was ditched at the last minute. Any way the board Dave posted would be easier to work with than hacking a controller.
ST does sell a development kit and break out boards for their 3 axis accelerometers. It might be worth the investment for serious development. Software is included to display capture and filter the output by a usb connected PC.