node-led

What is this?

This repo is a library compatible with Rick Waldron's johnny-five project. It adds support for Adafruit's LED backpacks.

Install

npm install node-led

8x8 matrix example

var five = require('johnny-five'),
    board = new five.Board(),
    Matrix8x8 = require('node-led').Matrix8x8;
 
board.on('ready', function() {
  console.log('Connected to Arduino, ready.');
 
  var opts = {
    address: 0x70
  };
 
  var matrix = new Matrix8x8(board, opts);
 
  var smile = [
    0b00111100,
    0b01000010,
    0b10100101,
    0b10000001,
    0b10100101,
    0b10011001,
    0b01000010,
    0b00111100
  ];
 
  matrix.drawBitmap(smile);
 
});
 

7 segment numeric example

var five = require('johnny-five'),
    board = new five.Board(),
    SevenSegment = require('node-led').SevenSegment;
 
board.on('ready', function() {
  console.log('Connected to Arduino, ready.');
 
  var opts = {
    address: 0x70
  };
 
  var display = new SevenSegment(board, opts);
 
  display.clearDisplay();
  display.writeText("3.A:C.E")
});
 

14 segment alphanumeric example

var five = require('johnny-five'),
    board = new five.Board(),
    AlphaNum4 = require('node-led').AlphaNum4;
 
board.on('ready', function() {
  console.log('Connected to Arduino, ready.');
 
  var opts = {
    address: 0x70
  };
 
  var display = new AlphaNum4(board, opts);
  display.clearDisplay();
  display.writeText("Node");
 
});