Software engineer Nico Waldispühl has documented in detail a simple way of logging temperature measured from DS18B20 temperature sensors via an Arduino board. The data is the fetched from the board using a PC runnning a Perl fetch script and logged. Furthermore the data can also then be charted using the URL-based Google Charts API for a pleasant result:
To get started with your own temperature-controlled projects, consider using our TEMP: DS18B20-based temperature sensor module:
... or our HUMID: Humidity and Temperature sensor module based on the popular DHT22 sensor unit. Both modules are fully documented and easy to get started with. These are only two of over a dozen of our sensor and output modules.