Hardware Fun with the Arduino board

I suggest you load your (first) Diecimila with Simple Message System
from the archives at arduino.cc. Then download my script package from
my mini-website, http://207.14.167.161. It's called SMS1.tgz. This
package provides full control of the hardware with shell scripts:
writePin-1,writePWM-1, readAD-1, readIO-1, and more. AD is scaled to
milliVolts and formatted for import to most spreadsheets. Sorry, my
mini-website isn't 24/7, it only works when my PC is booted, so keep
trying. Package is modular: need more pins? Plug in another SMS-loaded
Diecimila!

This turns the unit into a general-purpose linux-based control unit.
Includes hints on controlling servos and the like. You'll want to keep
the SMS-loaded unit around during development of other projects. Suppose
you need to calibrate a sensor--how do you do that? These scripts make
it easy. Want a light-show? Put commands in a textfile and 'source' it.