diff --git a/peripherals/PersonalActuators/I2CDisplay.cs b/peripherals/PersonalActuators/I2CDisplay.cs
index cce15cf..d6aadc4 100644
--- a/peripherals/PersonalActuators/I2CDisplay.cs
+++ b/peripherals/PersonalActuators/I2CDisplay.cs
@@ -21,16 +21,47 @@ namespace Antmicro.Renode.Peripherals
     public class I2CDisplay : II2CPeripheral, IExternal
     {
         DisplayForm display;
+        Thread thread1, thread2;
+        private bool _disposedValue;
 
         public I2CDisplay()
         {
             active = true;
             this.Log(LogLevel.Debug, "Display i2c connected");
-            Thread thread1 = new Thread(StartForm);
+
+            thread1 = new Thread(StartForm) {IsBackground = true};
             thread1.Start();
+
+            thread2 = new Thread(UpdateFrom) {IsBackground = true};
+            thread2.Start();
             Reset();
         }
 
+        ~I2CDisplay() => Dispose(false);
+
+        // Public implementation of Dispose pattern callable by consumers.
+        public void Dispose()
+        {
+            Dispose(true);
+            GC.SuppressFinalize(this);
+        }
+
+        // Protected implementation of Dispose pattern.
+        protected virtual void Dispose(bool disposing)
+        {
+            if (!_disposedValue)
+            {
+                if (disposing)
+                {
+                    display.Close();
+                    thread2.Abort();
+                    thread1.Abort();
+                }
+
+                _disposedValue = true;
+            }
+        }
+
         /**
         * Method used to invalidate the view of the form and redraw all the pixels (character)
         * This has been implemented as a while lopp in order to aviod that the display.Invalidate()
@@ -39,10 +70,10 @@ public I2CDisplay()
         */
         public void UpdateFrom(){
             while(true){
-                if(display.needsToBeUpdate()){
+                if(display != null && display.needsToBeUpdate()){
                     display.Invalidate();
-                    Thread.Sleep(100);
                 }
+                Thread.Sleep(30);
             }
         }
 
@@ -52,8 +83,6 @@ public void UpdateFrom(){
         public void StartForm(){
             display = new DisplayForm(this);
             display.Text = "Display 2x" + DisplayForm.numberOfCharPerRow;
-            Thread thread1 = new Thread(UpdateFrom);
-            thread1.Start();
             display.ShowDialog();
         }
 
diff --git a/peripherals/PersonalActuators/IRSensor.cs b/peripherals/PersonalActuators/IRSensor.cs
index 63904b3..2112e25 100644
--- a/peripherals/PersonalActuators/IRSensor.cs
+++ b/peripherals/PersonalActuators/IRSensor.cs
@@ -1,35 +1,74 @@
 using System;
 using System.Threading;
+using System.IO;
+using Antmicro.Renode.Logging;
 using Antmicro.Renode.Peripherals.Miscellaneous;
+using System.Collections.Generic;
 
 namespace Antmicro.Renode.Peripherals
 {
-    public class IRSensor : Button
+    public class IRSensor : Button, IDisposable
     {
-        private static readonly Random getrandom = new Random();
-
+        private Stream _resource;
+        private bool _disposed;
+        private bool _disposedValue;
+        private Queue<KeyValuePair<int, int>> queue;
+        private Semaphore semaphore; 
         private bool active;
+        Thread thread1;
         public IRSensor()
         {
+            semaphore = new Semaphore(0, 10);
             active = true;
-            Thread thread1 = new Thread(TriggerThread);
+            queue = new Queue<KeyValuePair<int, int>>();
+            thread1 = new Thread(TriggerThread);
             thread1.Start();
         }
 
-        public static int GetRandomNumber(int min, int max)
+        ~IRSensor() => Dispose(false);
+
+        // Public implementation of Dispose pattern callable by consumers.
+        public void Dispose()
+        {
+            Dispose(true);
+            GC.SuppressFinalize(this);
+        }
+
+        // Protected implementation of Dispose pattern.
+        protected virtual void Dispose(bool disposing)
         {
-            lock(getrandom) // synchronize
+            if (!_disposedValue)
             {
-                return getrandom.Next(min, max);
+                if (disposing)
+                {
+                    thread1.Abort();
+                }
+
+                _disposedValue = true;
             }
         }
 
         // Triggers random press in times between 700 and 3000 ms
-        public void TriggerThread(){
+        private void TriggerThread(){
             while(true){
-                Thread.Sleep(GetRandomNumber(700, 3000));
-                if(active)
-                    PressAndRelease();
+                semaphore.WaitOne();
+                if(active){
+                    KeyValuePair<int, int> element = queue.Dequeue();
+                    this.Log(LogLevel.Debug, "Run " + element.Key + " triggers every " + element.Value + " ms");
+                    for(int i = 0; i < element.Key; i++){
+                        Thread.Sleep(element.Value);
+                        PressAndRelease();
+                    }
+                }
+            }
+        }
+
+        public void TriggerSensorNTimes(int nTimes, int interval = 450)
+        {
+            if(active){
+                queue.Enqueue(new KeyValuePair<int, int>(nTimes, interval));
+                this.Log(LogLevel.Debug, "Set " + nTimes + " triggers every " + interval + " ms");
+                semaphore.Release();
             }
         }
 
diff --git a/src/i2c_lcd.c b/src/i2c_lcd.c
index e8c2c9f..58ab5f9 100644
--- a/src/i2c_lcd.c
+++ b/src/i2c_lcd.c
@@ -128,21 +128,22 @@ void lcd_send_two_string (char *str1, char * str2) {
 	lcd_send_string(str2);
 }
 
-void lcd_set_text_downloading() {
-    lcd_clear();
-    lcd_go_home();
-    lcd_send_string("Downloading...");
+void lcd_set_text_downloading(){
+	lcd_go_home();
+	lcd_send_string("Downloading...  ");
+	lcd_put_cur(1,0);
+	lcd_send_string("                ");
 }
 
-void lcd_set_number_people(int n_people) {
-    lcd_clear();
-    char num_char[15];
-    sprintf(num_char, "%d", n_people);
+void lcd_set_number_people(int n_people){
+	char num_char[15];
+	sprintf(num_char, "%d", n_people);
 	
 	lcd_go_home();
 	lcd_send_string("Number of people");
 	lcd_put_cur(1,0);
-  	lcd_send_custom_char(1);
+	lcd_send_custom_char(1);
 	lcd_send_string(" ");
-    lcd_send_string(num_char);
+	lcd_send_string(num_char);
+	lcd_send_string("                ");
 }
\ No newline at end of file
diff --git a/src/main.c b/src/main.c
index 23bdbd0..c064e90 100644
--- a/src/main.c
+++ b/src/main.c
@@ -63,8 +63,10 @@ int main(void) {
     COMM_Init(&hcomm);
     COMM_StartListen();
 
+    update_interface();
+
     while (1) {
-        HAL_Delay(1000);
+        HAL_Delay(100);
     }
 
 }