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Re: Noisy Accelerometer
any accelerometer is going to give you a good deal of noise. Try using one that supports I2C. There are ports for I2C right on the digital sidecar, and I have heard that the these accelerometers eliminate most of the noise by themselves.
A affordable method I've thought about is using the Wiimote's Nunchuck. It uses the I2C protocol to interface with the wiimote, it only costs $25, and the accelerometer inside it goes for $40 last time I checked.
There are a lot of resources on the internet geared specifically towards interfacing with the nunchuck.
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