Experiments with the WiTilt 3 axis accelerometer

Wireless Tilt sensor "WiTilt V2.5" from Spark Fun Electronics.
Updated, June 2008: WiTilt V3
Written by Paul Bourke


Menus

WiTilt V2.5, Firmware V4.2 - Configuration Menu:
=========================
 [1] Start Tri-Ax detection (hit spacebar to stop)
 [2] Set Active Channels (XYZ Active)
 [3] Calibrate
 [4] Sensor Range (+/-1.5g)
 [5] Display Mode (Raw)
 [6] Set Threshold (Currently +/-0.0g)
 [7] Set Output Frequency (60Hz)
 [8] Set Bluetooth (Currently Inactivce)
ASCII data format

This is with threshold set to 0, coordinate entries are skipped if that coordinate values is below the threshold.

X=459  Y=503  Z=760 
X=452  Y=519  Z=755 
X=444  Y=512  Z=756 
:      :      :
:      :      :
Notes

Interface example

Blue cup

The final version in the intended cup. AAA batteries.

WiTilt Version 3

Version 3 is a significant improvement, at least for those who want a finished solution. There are some differences (refer to notes above):

The menus are the same as version 2.5.

WiTilt v3.0 - Configuration Menu:
=========================
 [1] Start Tri-Ax detection (Press any key to stop)
 [2] Set Active Channels (XYZ-- Active)
 [3] Calibrate
 [4] Sensor Range (1.5g)
 [5] Display Mode (Raw)
 [6] Set/View Threshold Values
 [7] Set Output Frequency (60Hz)
Manual for version 3

Rough and ready software used for original evaluation: witilt.zip