Hardware / wiring
The weather information is collected by a WS2308 / Matrix II weather station in Windisch.
This station uses a RS232 connection to deliver the data to a small linux server located in the basement.
Outside Sensors
Software
The open source package open2300 by Kenneth Lavrsen collects data every 5 minutes and stores them in a log file.
Once per day min/max stats are collected and the statistics are reset on the WS2308.
The data is then transmitted to a server in Brugg using rsync over a OpenVPN tunnel.
In Brugg the data is processed in various ways:
- stored into a MySQL Database
- table for 5 minute records:
time|temp inside|temp outdoors|dewpoint
humidity inside|humidity outdoors
wind speed|wind direction degrees|wind direction text|wind chill
rain 1h|rain 24h|rain total
pressure|tendency|forecast
- table for min/max values per day:
Date|Temp Min/Max Inside/Outside
Humidity Min/Max Inside/Outside
Wind Speed Min/Max
Wind Chill Min/Max
Time for all values above
- stored into a rrd database
- creation of graphs using rrdtools graph
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