diff --git a/tools/utils/serial_test.py b/tools/utils/serial_test.py
index 098d2bb..b8e43dc 100644
--- a/tools/utils/serial_test.py
+++ b/tools/utils/serial_test.py
@@ -6,11 +6,11 @@
 for port in ports:
     print(port.device)
 
-ser = serial.Serial('/dev/ttyUSB0', 115200, timeout=1)  # Adjust USB port as needed
+# /dev/ttyUSB0 for linux?
+ser = serial.Serial('COM3', 115200, timeout=1)  # Adjust USB port as needed
 
 while True:
     serialized_msg = str(1) + '\n'  # Add a newline as a delimiter
     ser.write(serialized_msg.encode())
     print("sent to arduino")
-    
-    time.sleep(2)
\ No newline at end of file
+    time.sleep(1)
\ No newline at end of file