LM34 Temperature Sensor Weather Station Project
Have a look at the NANO.r00t-Ed site for some interesting projects including this LM34 Temperature Sensor Weather Station Project. It uses a LM34 temperature sensor which is similar to the LM35 that I used in the PWM fan controller project except it outputs voltages that scale with Fahrenheit instead of Celsius. There is a microcontroller that reads in the voltage and determines the temperature which is sent to the weather