|I had a need for a weather
station that could log data for an extended
period unattended... and I didn't want to fork out thousands for a
professional or semi-professional set up (it's possible to pay
$10,000 for one). Since I enjoy electronics design, and am
reasonably handy in the shed, I built my own, including my own rain
sensor -- although the unit will interface with some commercially
available tipping bucket rain sensors.
The details were published in Silicon Chip magazine in Australia (September and October 2007 issues). The project has great logging capability. It will take half hourly readings of temperature and rainfall for a year before the data needs to be collected. It can also be programmed for other logging frequencies down to one minute (although this requires reprogramming the controller with some specialised equipment). Better still, it runs on three AA batteries, which will last for years before they need replacing.
Data is downloaded directly via an on-board serial port to a computer or laptop. The data is sent in a form that can easily be used in spreadsheets.
Depending on demand, I may be able to make these up for people. Please email me if you want a quote.
I can also provide some parts that will help for construction, for example, please contact me if you'd like:
For those who have read the article...Here are the links mentioned in part 2 (October 2007)