Storing data internally – EEPROM
Sometimes we want to store some values inside the Arduino even when we turn it off. Luckily, each Arduino has an internal Electrically Erasable Programmable Read-Only Memory (EEPROM) just for that.
A note for using EEPROM–—the EEPROMs inside the Arduinos have a life cycle of 100,000 reads/writes. It may seem a lot, but it isn't. Only use the EEPROM when strictly needed.
Here we will program Arduino to record how many times we pressed a button. If the power is cut, it will still remember the last count using the EEPROM.
Getting ready
Following are the ingredients needed to execute this recipe:
- An Arduino Board connected to the computer via USB
- A push button
How to do it…
This recipe is based on the Button with no resistor ...
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