Solar-Oriented, Arduino-Powered Clock

Step 4: Software - Storing Values

A number of values in the clock need to be stored in EEPROM. Some, like the display schedule, are fine as bytes. Others, however, need a signed float. The easiest thing to do was store the float as an unsigned 16-bit word of two bytes. All you have to do is move the decimal point with a divide or multiply. I store the sign, where needed, in it's own byte.

I know there are AVR libraries to handle storing whatever to EEPROM. I think I am using less RAM doing it simply the way I do it.