Environmental monitoring with Arduino

The world's shortest electronics primer

Project : noise monitor/LED bar output

New component : 4Char display

Detecting electromagnetic interference (and making bad music)

Project : water conductivity/numerical output

New component : ethernet shield

Project : humidity, temperature & dew point/4Char display

Real-time, geo-tagged data sharing with Pachube

Project : radiation counter/sharing data on the internet

Casing the gadget.