Arduino is the official name for an open source hardware technology developed in Italy for controlling hardware. The boards are available fairly cheaply, have sensor, motor, communication and other hardware extensions. They have been adapted for many purposes. See the handout from an Arduino training course from sparkfun.com for some great references.
Tck/Tk seems ideally suited as a programming languages for this technology
What a great new future for tcl as a Tool Command Language for actual tools as well as software tools!
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