diff --git a/docs/index.html b/docs/index.html
index ce0b118..16d79ea 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -275,7 +275,7 @@ <h2 class="mt-0">Interested? Contact me (English / Slovak language)</h2>
                 </div>
 <h5 class="h5 mb-2">List of supported hardware (PCB compatible):</h5>
 <ul>
-    <li>Arduino Nano V3.0</li>
+    <li data-toggle="tooltip" title="<img src='http://getbootstrap.com/apple-touch-icon.png' />">Arduino Nano V3.0</li>
     <li>LCD 2004A (20x4) with I2C converter, 5V operated</li>
     <li>NXP RFID RC522 (13.56 MHz), 3V3 operated</li>
     <li>ISO/IEC 14443-A RFID wristbands, cards (MiFare 1K tags - 13.56 MHz)</li>
@@ -294,6 +294,13 @@ <h6 class="h6 mb-2">Optional:</h6>
         <footer class="bg-light py-5">
             <div class="container px-4 px-lg-5"><div class="small text-center text-muted">&copy; 2024 Martin Chlebovec. All rights reserved.<br>martinius96@gmail.com</div></div>
         </footer>
+<script>
+$('li[data-toggle="tooltip"]').tooltip({
+    animated: 'fade',
+    placement: 'bottom',
+    html: true
+});
+</script>
         <!-- Bootstrap core JS-->
         <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.2.3/dist/js/bootstrap.bundle.min.js"></script>
         <!-- SimpleLightbox plugin JS-->