node index.js

var mqtt    = require('mqtt');
var client  = mqtt.connect('mqtt://test.mosquitto.org');
var led_blue; 

client.on('connect', function () {
  console.log('state');
  client.subscribe('tito');
 // client.publish('sensor', 'Hello mqtt');
});
 
var five = require("johnny-five");
  var pcDuino = require("pcduino-io");
  var board = new five.Board({
  io: new pcDuino()
});

board.on("ready", function() {
  led_blue = new five.Led(12);
  led_green = new five.Led(11);
  led_red = new five.Led(10);


 // led_blue.blink();
    client.publish('tito', 'readys');

    var slider = new five.Sensor("A0"); //flood sensor
    slider.scale([0 , 255]).on("slide", function () { 
    console.log("slide", this.value);
   
    client.publish('sensor', this.value.toString());

 
    if (this.value === 0) {led_red.on()}
    else {led_red.off()};

    });
});

client.on('message', function (topic, message) {
  // message is Buffer
  console.log(message.toString());
  console.log(topic.toString());

//  client.end();
 // led_blue.toggle();
  if(message.toString()=='blue'){
  led_blue.toggle();
  }
  if(message.toString()=='green'){
  led_green.toggle();
  }
  if(message.toString()=='red'){
  led_red.toggle();
  }



});

package json

{
  "name": "pcduino-io-2",
  "version": "0.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "MK",
  "license": "ISC",
  "dependencies": {
    "pcduino-io": "~0.3.0",
    "mqtt": "~1.7.4",
    "johnny-five": "~0.9.34"
  }
}