Hello!
Recently i decided to build a Arduino temperature logger.
I have Arduino Duemilanove,
LM35CZ temperature sensor,
SD Card module.
Before i start to build, i'd like to know if anyone has already done that..
jeremy blum has a fine tutorial about this Tutorial 11 for Arduino: SD Cards and Datalogging – JeremyBlum.com
For more precise temperature readings you could use MLX 90614, it is a Non contact IR Temp Sensor and has a bigger range.
You will also find several tutorials on the net for this if you want help with you coding.
XD