Some microcontrollers like Arduino have very limited internal storage space, so an external EEPROM will be suitable for small amount of data storage or for extending the data storage capability of a ...

19 thoughts on “ Back To Basics With An Arduino And An EEPROM ... how/why I2C works which is helpful for when you’re working on a new device you won’t always have a library or tutorial.

Before arduino for example, there was an eeprom library for AVR which had an “update()” function, and if a byte was the same in eeprom, then the byte was just skipped and not written.

Meet the Arduino Compatible RFID Reader Module. It can hold card data for up to five cards, takes seconds to program, and holds card data in EEPROM memory, which means that the cards are saved ...