I have always enjoyed reading/doing projects that involve sensing various environmental parameters and recording them. This Solar-powered outdoor weather station built upon the Arduino platform measures the ambient temperature, humidity and barometric pressure, and send these parameters to a PC using XBee RF modules. The measurements are recorded on the PC and presented in nice charts showing their temporal trends.
Solar-powered weather station
The beauty of this project is that the outdoor module is fully powered through a Lipo battery which is charged through a solar panel. Sensors used in this project are DHT22 for temperature and relative humidity measurements, and BMP0805 for measuring barometric pressure.
