Hi! I uploaded tiny bit of my work onto public repository https://github.com/tonuonu/TYROS This is part of TYROS project which targets ROS projects at University of Tartu. First published source there is TIChronos/src/ti_chronos_joy.cpp which turns Texas Instruments Chronos watch (http://processors.wiki.ti.com/index.php/EZ430-Chronos?DCMP=Chronos&HQS=Other+OT+chronoswiki ) into ROS compatible Joystick publisher. Included launch file works with turtlesim demo. Tõnu