1. Temperature Sensor

2. TMP36
For this course we will be using the TMP36 Celsius sensor which comes factory calibrated to output 10 mV / degree C (datasheet on course site)
Ladyada has created a full tutorial on the implementation of this sensor here:

3. Construction
Install the temperature sensor on the daughter board, then using data line G/w-A bring the data to the main board and attach it to the analog input A0
Change your Arduino code to send the current temperature in degrees Celsius over serial to your computer
In your code set analog reference to external (analogReference(EXTERNAL);) since we tied it to the 5v line from our Arduino for increased accuracy

4. Daughter Board Picture

5. Main Board Picture