project.

1.js

var zetta = require('zetta');
var Buzzer = require('zetta-buzzer-bonescript-driver');
var Microphone = require('zetta-microphone-bonescript-driver');
var app = require('./app');

zetta()
  .link('http://hello-zetta.herokuapp.com/')
  .use(Buzzer)
  .use(Microphone)
  .use(app)
  .listen(1337)

2.js

module.exports = function(server) {
  var buzzerQuery = server.where({type: 'buzzer'});
  var microphoneQuery = server.where({type: 'microphone'});
  server.where([buzzerQuery, microphoneQuery], function(buzzer, microphone){
    var volumeStream = microphone.createReadStream('volume');
    volumeStream.on('data', function(msg){
      if(buzzer.state == 'off' && msg.data > 30) {
        buzzer.call('turn-on', function(err){
          if(err) {
            console.log(err);
          } 
        });
      } else {
        buzzer.call('turn-off', function(err){
          if(err) {
            console.log(err);
          }
        });
      }
    });
  });
}