Saving LED Configurations to Arduino Using EEPROM

While working on the next release of PixelMaestro, I came across a significant problem: I had a system in place for storing configurations as byte arrays, and I had a system in place for reading in and executing these arrays. This was perfectly fine on a computer, since I could save these arrays to a file. But on an Arduino (where files aren’t a thing), where and how was I supposed to store a series of bytes that would persist across reboots? Enter EEPROM.

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The World of Microcontrollers

A few months ago, I decided to buy an Arduino. For those who are unfamiliar, an Arduino is a small programmable computer typically used to power a specific application such as a smoke detector, medical device, watch, household appliance, or automobile engine. My reasons for buying an Arduino were twofold: I wanted to learn how small, embedded computers were being used to power our everyday lives, and I wanted to learn more about the Maker’s Movement. While this post focuses on the first reason, you can learn more about the Maker’s Movement through a variety of resources including Make Magazine and Wikipedia.

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