5x8 Addressable LED display
- Thread starter VK3ZYZ
- Start date
This works, but it needs a couple of displays.
Code:
#include <Adafruit_GFX.h>
#include <Adafruit_NeoMatrix.h>
#include <Adafruit_NeoPixel.h>
// MATRIX DECLARATION:
// Parameter 1 = width of NeoPixel matrix
// Parameter 2 = height of matrix
// Parameter 3 = pin number (most are valid)
// Parameter 4 = matrix layout flags, add together as needed:
// NEO_MATRIX_TOP, NEO_MATRIX_BOTTOM, NEO_MATRIX_LEFT, NEO_MATRIX_RIGHT:
// Position of the FIRST LED in the matrix; pick two, e.g.
// NEO_MATRIX_TOP + NEO_MATRIX_LEFT for the top-left corner.
// NEO_MATRIX_ROWS, NEO_MATRIX_COLUMNS: LEDs are arranged in horizontal
// rows or in vertical columns, respectively; pick one or the other.
// NEO_MATRIX_PROGRESSIVE, NEO_MATRIX_ZIGZAG: all rows/columns proceed
// in the same order, or alternate lines reverse direction; pick one.
// See example below for these values in action.
// Parameter 5 = pixel type flags, add together as needed:
// NEO_KHZ800 800 KHz bitstream (most NeoPixel products w/WS2812 LEDs)
// NEO_KHZ400 400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers)
// NEO_GRB Pixels are wired for GRB bitstream (most NeoPixel products)
// NEO_RGB Pixels are wired for RGB bitstream (v1 FLORA pixels, not v2)
int matrixW = 8;
int matrixH = 5;
#define PIN 5 // OUTPUT PIN FROM ARDUINO TO MATRIX D-In
Adafruit_NeoMatrix matrix = Adafruit_NeoMatrix(matrixW, matrixH, PIN,
// NEO_MATRIX_TOP + NEO_MATRIX_LEFT +
NEO_MATRIX_TOP + NEO_MATRIX_RIGHT +
NEO_MATRIX_COLUMNS + NEO_MATRIX_ZIGZAG,
NEO_GRB + NEO_KHZ800);
const uint16_t colors[] = {
matrix.Color(255, 0, 0), matrix.Color(0, 255, 0), matrix.Color(255, 255, 0), matrix.Color(0, 0, 255), matrix.Color(255, 0, 255), matrix.Color(0, 255, 255), matrix.Color(255, 255, 255)
};
#define arr_len( x ) ( sizeof( x ) / sizeof( *x ) ) // Calculation of Array Size;
int pixelPerChar = 6; // Width of Standard Font Characters is 8X6 Pixels
int x = matrix.width(); // Width of the Display
int pass = 0; // Counter
int i = 0; // Counter
int clr = 0; // Counter for Indexing Array of Colors
char msg[] = "-------------------"; // BLANK Message of Your Choice;
void setup() {
matrix.begin();
matrix.setTextWrap(false);
matrix.setBrightness(5);
matrix.setTextColor(colors[0]);
}
void loop() {
int arrSize = arr_len( colors );
char exampleText[] = "Hello Josh"; // SCROLLING Message of Your Choice;
writeText(exampleText);
delay(1000);
matrix.print(msg); //Print the Message String;
matrix.show();
delay(1000);
/* Commands for Debugging */
char msgText[] = "It works :)";
matrix.print(msgText); // Scrolling Print the Message String;
matrix.show();
delay(1000);
writeText("End of Loop"); //Print the Message String;
delay(1000);
/* Commands for Debugging */
// LATHER - RINSE - REPEAT Is Why coders never leave the Shower;
}
/* -------------------- FUNCTIONS BELOW -------------------- */
void writeText(String msg) {
int arrSize = arr_len( colors ); // Array of Text Colors;
int msgSize = (msg.length() * pixelPerChar) + (2 * pixelPerChar); // CACULATE message length;
int scrollingMax = (msgSize) + matrix.width(); // ADJUST Displacement for message length;
x = matrix.width(); // RESET Cursor Position and Start Text String at New Position on the Far Right;
clr = 0; // RESET Color/Repeat Index;
while (clr <= arrSize) {
/* Change Color with Each Pass of Complete Message */
matrix.setTextColor(colors[clr]);
matrix.fillScreen(0); // BLANK the Entire Screen;
matrix.setCursor(x, 0); // Set Starting Point for Text String;
matrix.print(msg); // Set the Message String;
/* SCROLL TEXT FROM RIGHT TO LEFT BY MOVING THE CURSOR POSITION */
if (--x < -scrollingMax ) {
/* ADJUST FOR MESSAGE LENGTH */
// Decrement x by One AND Compare New Value of x to -scrollingMax;
// This Animates (moves) the text by one pixel to the Left;
x = matrix.width(); // After Scrolling by scrollingMax pixels, RESET Cursor Position and Start String at New Position on the Far Right;
++clr; // INCREMENT COLOR/REPEAT LOOP COUNTER AFTER MESSAGE COMPLETED;
}
matrix.show(); // DISPLAY the Text/Image
delay(40); // SPEED OF SCROLLING or FRAME RATE;
}
clr = 0; // Reset Color/Loop Counter;
/* LATHER - RINSE - REPEAT - Why coders have such nice hair */
}Its hard to believe but i have since found even smaller addressable leds.
also you can scroll on a single display too.
also you can scroll on a single display too.
C++:
#include <Adafruit_GFX.h>
#include <Adafruit_NeoMatrix.h>
#include <Adafruit_NeoPixel.h>
#define PIN 6
Adafruit_NeoMatrix matrix = Adafruit_NeoMatrix(5, 8, PIN,
NEO_MATRIX_TOP + NEO_MATRIX_LEFT +
NEO_MATRIX_ROWS + NEO_MATRIX_ZIGZAG,
NEO_GRB + NEO_KHZ800);
void setup() {
matrix.begin();
matrix.setTextWrap(false);
matrix.setBrightness(20);
matrix.setTextColor(matrix.Color(255, 0, 0));
}
int x = matrix.width();
int pass = 0;
char message[] ="I scroll with the best of them.";
void loop() {
matrix.fillScreen(0);
matrix.setCursor(x, 0);
int scollPixels = (-6 * (strlen(message)));
matrix.print(message);
if(--x < scollPixels ) {
x = matrix.width();
if(++pass >= 3) pass = 0;
}
matrix.show();
delay(70);
}
I just modded some code for this next club meeting.
labels are easier to understand than just numbers so....
labels are easier to understand than just numbers so....
Code:
#define panelWidth 5
#define panelHeight 8
#define PIN 5
Adafruit_NeoMatrix matrix = Adafruit_NeoMatrix(panelWidth, panelHeight, PIN,
NEO_MATRIX_TOP + NEO_MATRIX_LEFT +
NEO_MATRIX_ROWS + NEO_MATRIX_ZIGZAG,
NEO_GRB + NEO_KHZ800);