Thank you for your reply Jack.
Your project is really interesting and the design seems to be very versatile. I'm sure I will have to take at look at your code at some point.
I read that you had your prototypes made by ITead. How pleased were you with quality andservice? I was thinking of ordering my boards from them as well even though I have no idea of what I will be doing with 20+ pieces... I can't populate them anyway the sensors and the RTC are pretty pricy.
Back to your pcb - Why did you chose an eeprom as the main storage over an sd card? For power saving reasons or possible card failure if the device is deployed in difficult conditions (I am thinking of possible corrosion of the sd card contacts)? How do you upload the data to your pc after you gathered it?
Regards,
Dominik