diff --git a/brotherax240_cntrl/platformio.ini b/brotherax240_cntrl/platformio.ini
index 3051e22..e517da4 100644
--- a/brotherax240_cntrl/platformio.ini
+++ b/brotherax240_cntrl/platformio.ini
@@ -14,6 +14,9 @@ platform = ststm32
 board = genericSTM32F103C8
 framework = arduino
 
+build_flags = 
+    -D HAVE_HWSERIAL1
+
 upload_protocol = serial
 
-monitor_speed = 115200
\ No newline at end of file
+monitor_speed = 9200
\ No newline at end of file
diff --git a/brotherax240_cntrl/src/main.cpp b/brotherax240_cntrl/src/main.cpp
index 12951c2..8dfeda5 100644
Binary files a/brotherax240_cntrl/src/main.cpp and b/brotherax240_cntrl/src/main.cpp differ