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Welcome to the Simple-LED-Matrix-Library wiki! This library is, as the name might suggest, to control LED matrices (more specifically MAX7219s).
This library was originally created for an event (at my school's (University of New Haven) makerspace) where people with minimal experience with Arduinos and electronics will be wiring an LED matrix to an Arduino nano and program it to scroll some text. At the time I could not find a library with both simple print functions while being fast enough for some very fast scrolling, and thus inspired me to create this library.
While the aim of this library is to be as simple as possible, I also want to prioritize performance. Thus, for example, is the reasoning behind locking the pins (except for CS) which could be hooked up to the LED matrix (in order to utilize the hardware SPI peripheral).