Cesardaher (talk | contribs) |
Cesardaher (talk | contribs) |
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These functions were adapted and used both for columns and rows and can be expanded into different sized matrixes. | These functions were adapted and used both for columns and rows and can be expanded into different sized matrixes. | ||
== | ==Prototyping== | ||
===3x3 LED Matrix=== | |||
The first prototype was built on a breadboard using basic components attached to ESP8266. Below it, there is the list of tweets used to move the LED light. | The first prototype was built on a breadboard using basic components attached to ESP8266. Below it, there is the list of tweets used to move the LED light. | ||
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For the next prototype, I want to work with a bigger matrix, and try to make the tweet search smoother and faster. Ideally, I would be able to only issue commands to the microcontroller with the arrival of a new tweet. | For the next prototype, I want to work with a bigger matrix, and try to make the tweet search smoother and faster. Ideally, I would be able to only issue commands to the microcontroller with the arrival of a new tweet. | ||
==='''8x8 LED Matrix'''=== | |||
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 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. | |||
<pre> | |||
#define PIN D6 | |||
#define NUMPIXELS 64 | |||
const int rows = 8; | |||
const int columns = 8; | |||
uint8_t pinVal[rows][columns] = | |||
{ { 0, 1, 2, 3, 4, 5, 6, 7 }, | |||
{ 8, 9, 10, 11, 12, 13, 14, 15 }, | |||
{ 16, 17, 18, 19, 20, 21, 22, 23 }, | |||
{ 24, 25, 26, 27, 28, 29, 30, 31 }, | |||
{ 32, 33, 34, 35, 36, 37, 38, 39 }, | |||
{ 40, 41, 42, 43, 44, 45, 46, 47 }, | |||
{ 48, 49, 50, 51, 52, 53, 54, 55 }, | |||
{ 56, 57, 58, 59, 60, 61, 62, 63 }}; | |||
</pre> | |||
To deal with the duplicate tweets, in this version I also changed | |||