You can play around with where the data goes in the EEPROM too. Use the first byte to tell you where to write the timestamp and change it periodically (monthly?)
With 136 years to play with though, it's not really worth adding the complexity.
You can play around with where the data goes in the EEPROM too. Use the first byte to tell you where to write the timestamp and change it periodically (monthly?)
With 136 years to play with though, it's not really worth adding the complexity.