Weekend build: LCD SMS text message reader

This project was really fun and involved a nice combination of hardware, Twillio, express and johnny-five. The idea was to display any sms messages received by a Twillio number on a bluetooth connected lcd screen.

The Hardware:

  • Microduino+ (arduino mega compaitible)
  • 20x4 lcd screen
  • HC-05 bluetooth module


Everything is connected using the following configuration:

johnny-five docs lcd

The Software:

There and back again; from SMS to JSON:

Twillio receives a text message and submits a POST with the message information in JSON format to the pagemebro web site that emits a socket message to all clients connected, the final piece is the node script that connects to the pageMeBro web site via sockets and receives the message.


Code :

var io = require('socket.io-client'),
    socket = io.connect('http://pagemebro.herokuapp.com/'),
    five = require("johnny-five"),
    board = new five.Board({
        //here we specify the bluetooth port.
        port: "/dev/tty.Arduino2-DevB"
var lcdPrint = function (lineOne, lineTwo) {
board.on("ready", function() {

  lcd = new five.LCD({
    pins: [7, 8, 9, 10, 11, 12]

  lcd.on("ready", function() {
    //display the date when the lcd screen is ready.
    var date = new Date();
//subscribe to the socket and display the text.
socket.on('connect', function () {
    // socket connected
    socket.emit('deviceConnect', { device: 'pager' });

    //respond to the new message event.
    socket.on('message:new', function (data) {
        lcdPrint(data.from, data.Body);

Too much just to receive a text message? yea but it was fun.