Data storage in EEPROM

[jk]

I want to use the EEPROM of the MEGA-Board for data storage. In the listing of the Selftest example I found that the calibration funktion uses bytes 0-24. Is there any other data stored in EEPROM? What is the first adress I can use?

[jamesbowman]

That is exactly right, it uses addresses 0-24 in EEPROM.
So everything from EEPROM address 25 up is available for your use.