Temperature Logging

I finally worked on the temperature logging system for the balloon last night. I was able to get it almost complete. Right now it is correctly recording the time and temperature (from two probes). I was able to write a test message to the SD card in the same arduino sketch as well. My next step is to write the data to the SD card instead of the serial out. Its a little tricky as I'm running into variable cast type issues. - my C programming kung-fu is not strong.

After I get the correct data writing to the SD card the next step is to switch to the ardino nano and solder everything into a small package. I also need to make a usb mini connector to leech power off of the camera's power connector.