ipfs-iot.js

var ipfsAPI = require('ipfs-api');
var ipfs = ipfsAPI('localhost', '5001', {protocol: 'http'}); 
const topic = 'general';

var five = require('johnny-five');
five.Board().on('ready', function(){

  led = new five.Led(9);
  console.log('Ready');

  const receiveMsg = (msg) => {
    console.log(msg.data.toString());
    if(msg.data.toString() == "on"){
     led.on();
    } else {
      led.off();
    }

  }
  ipfs.pubsub.subscribe(topic, receiveMsg);

});