Weather
This was a project I undertook a few years ago to build a weather station at home. It uses off the shelf hardware from EcoWitt, basically a generic brand AmbientWeather station clone, and the WeeWx software with a theme by Pat at BelchertownWeather.com. I record the following at my station:
Temperature
Humidity
Wind speed
Wind direction
Rainfall
UV
Solar radiation
Barometric Pressure
Wind speed
Lightning strikes & distance
We live close enough to Lake Superior that the weather can be DRASTICALLY different at our house as compared to the official NOAA station up the hill at the Duluth Airport.