I've been trying to find a way to post pictures but am unsure how most people do it.
See: http://dam.mellis.org/2010/06/sensor_library_for_arduino/ for an initial idea of what the implementation might look like. Suggestions welcome here or on the developers mailing list.
- short AREF to Gnd (I used digital pin 3 for this)[glow]- wait 5us[/glow]- disconnect AREF from Gnd
Another suggestion would be an "averaging" analogRead (ie analogReadAVG(pin,samples_to_average)).
How does one wait 5 micro-seconds with an arduino??