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==='''8x8 LED Matrix'''=== | ==='''8x8 LED Matrix'''=== | ||
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For the next prototype, I used a Adafruit WS2812 8x8 Matrix instead. This LED Matrix has the advantage of being built-in for microcontroller use, with many functions available in its library. It also has the advantage of using only three pins and having no need for additional resistors, which made its connection very easy. The downside is that it needs an external power supply. | For the next prototype, I used a Adafruit WS2812 8x8 Matrix instead. This LED Matrix has the advantage of being built-in for microcontroller use, with many functions available in its library. It also has the advantage of using only three pins and having no need for additional resistors, which made its connection very easy. The downside is that it needs an external power supply. | ||
In this version, there is no need to assign digital pins to each LED. Instead, I assigned one digital pin and the number of "pixels" in the matrix. With that, each pixel is assigned a number (from 0 to 63), going from left to right and top to bottom. Because of that, I arranged a 2D 8x8 array containing each pixel, so that I could reuse the previous functions. | |||
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