diff --git a/java_console/io/src/test/java/com/rusefi/binaryprotocol/test/SerialSandbox.java b/java_console/io/src/test/java/com/rusefi/binaryprotocol/test/SerialSandbox.java
new file mode 100644
index 0000000000..ea6b9ce3e7
--- /dev/null
+++ b/java_console/io/src/test/java/com/rusefi/binaryprotocol/test/SerialSandbox.java
@@ -0,0 +1,20 @@
+package com.rusefi.binaryprotocol.test;
+
+import com.rusefi.autodetect.PortDetector;
+import com.rusefi.io.LinkManager;
+
+import java.util.concurrent.CountDownLatch;
+
+public class SerialSandbox {
+    public static void main(String[] args) {
+        String port = PortDetector.autoDetectSerial(callbackContext -> null).getSerialPort();
+        System.out.println("Serial detected on " + port);
+
+        LinkManager linkManager = new LinkManager();
+        CountDownLatch connected = linkManager.connect(port);
+        if (connected.getCount() > 0)
+            throw new IllegalStateException("Not connected in time");
+
+
+    }
+}