Logging values

Forum 2005-2010 (read only) Hardware Interfacing
1

Hi there,
I'm using my arduino boards to monitor temperature and sound levels in a room: Max, Average and Variance.
They currently output signals using LEDs when thresholds are exceeded, which works really well.

I want to move it on a step, is there a favoured (documented?) way to periodically
save the actual internal variables?
I'd want 15 second samples over 5 days so it would be a lot of values.

Thanks in advance for any pointers.

Chris

2

The ATmega8 only has 512 bytes of EEPROM, so you'll either have to connect it to a computer and log to the serial port, or attach some external memory, like the serial EEPROM in the tutorial here: http://www.arduino.cc/en/Tutorial/SPIEEPROM .

-j