diff --git a/app.js b/app.js
index 8714cda..1fa9d6b 100644
--- a/app.js
+++ b/app.js
@@ -3,70 +3,45 @@ var fs = require('fs');
 var express = require('express');
 var app = express();
 var path = require('path');
-// var index = fs.readFileSync('index.html');
 var server = http.createServer(app);
 var port = 8000;
 
-const { SerialPort } = require('serialport')
-const { ReadlineParser } = require('@serialport/parser-readline')
-const sport = new SerialPort({ path: '/dev/ttyACM0', baudRate: 115200 })
-const five = require('johnny-five');
-const board = new five.Board();
-
-const parser = sport.pipe(new ReadlineParser({ delimiter: '\r\n' }))
-parser.on('data', console.log)
+const { SerialPort } = require('serialport');
+const { ReadlineParser } = require('@serialport/parser-readline');
+const sport = new SerialPort({ path: '/dev/ttyACM0', baudRate: 115200 });
+const parser = sport.pipe(new ReadlineParser({ delimiter: '\r\n' }));
+parser.on('data', console.log);
 
 server.listen(port, () => {
-    console.log("Server is listening at port %d", port);
+  console.log("Server is listening at port %d", port);
 });
 
 app.use(express.static(path.join(__dirname, "public")));
 
-board.on('ready', function() {
-    const led = new five.Led(13); // Assuming LED connected to GPIO 13 (D13)
-  
-    // Emit 'blink' event to clients when the LED turns on
-    led.on('on', function() {
-      io.emit('blink');
-    });
-  
-    // Emit 'stop' event to clients when the LED turns off
-    led.on('off', function() {
-      io.emit('stop');
-    });
-  
-    // Function to blink the LED
-    function blinkLed() {
-      led.blink(500); // Blink every 500 milliseconds
-    }
-  
-    // Start blinking the LED
-    blinkLed();
-  });
-// var server = http.createServer(function(req, res){
-
-//     res.writeHead(200, {'Content-Type':'text/html'});
-
-//     res.end(index);
-
-// });
-
 var io = require('socket.io')(server);
 
-io.on('connection', function(socket){
+io.on('connection', function(socket) {
+  console.log('A new client connected');
+  
+  parser.on('data', function(data) {    
+    const msg = data.split(' ');
+    console.log(msg[0], msg[1]);
+    io.emit('node-data', data);      
+  });
 
-    parser.on('data', function(data) {    
-        const msg = data.split(' ');
-        console.log(msg[0], msg[1]);
-        io.emit('node-data', data);      
-    }); 
-    
-    console.log('Node.js is listening!!');
-    socket.on("hello", (arg, callback) => {
-    console.log("hellohelo"); // "world"
+  socket.on('hello', (arg, callback) => {
+    console.log("Received 'hello' event from client");
     io.emit('blink');
+  });
 
-    }); 
+  socket.on('disconnect', () => {
+    console.log('A client disconnected');
+  });
+
+  socket.on('error', (error) => {
+    console.log('Socket error:', error);
+  });
+});
 
     socket.on('chat message', (msg) => {
         console.log('[user]['+ socket.id + '][' + msg + ']');