diff --git a/stefankoelle/index.njk b/stefankoelle/index.njk
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@@ -192,6 +192,7 @@ layout: stefankoelle.njk
   <h3>Arduino / PlatformIO</h3>
   <ul>
     <li>Built ESP32 dashboards (<a href="https://github.com/skoelle/m5stack-dashboard" target="_blank">M5Stack</a>, <a href="https://github.com/skoelle/wt32sc01-dashboard" target="_blank">WT32-SC01</a>) showing weather, calendar, and Munich transit departures on physical hardware.</li>
+    <li><a href="https://www.moonweb.org/smarthome/kids-rfid-player/">Kids RFID MP3 Player</a>: Interactive audio playback system with RFID tags, powered by an Arduino Nano.</li>
   </ul>
 
   <h3>.NET Framework</h3>