Here is an open source earthquake sensor based on the Wii Nunchuk. A Teensy is used to read the I2C accelerometer output:
This article explores the suitability of a Wii nunchuk based USB accelerometer as an earthquake sensor for the Quake-Catcher Network (QCN) project. It examines the nunchuk over several metrics: precision and range, frequency response, total cost and availability.
The broken links to the code are fixed now.
looking to dup.system. circuits wanted.
Douglas
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