The TiltStick is a small acceleration sensing device in form of a USB stick with microcontroller AVR Mega 8 as main processor . To measure acceleration (caused e.g. by motion and tilt), the device using a two axis acceleration sensor. The device is emulating a USB joystick and it can be used in conjunction with any USB equipped host (e.g. a standard PC or the Nokia N8XX family) without any special drivers.
Till Harbaum as designer has made two versions of the TiltStick on different 2D accelerometer chips. The smaller one is based on the Analog Devices XL203 (the XL202 may also be used) while the bigger version is based on the Freescale MMA7261. The advantage of the freescale version is that a pin 3D chip exists. The hardware of the TiltStick is prepared to support the third axis.
Download :
Souce Code and Documentation
tag : Acceleration Sensing, microcontroller AVR project, USB project (src)
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