diff --git a/src/main.py b/src/main.py
index 938ee8b..e2a539f 100644
--- a/src/main.py
+++ b/src/main.py
@@ -48,11 +48,11 @@ class App(ctk.CTk):
 
         # find the center point
         if self.system_platform == "Linux":
-          center_x = int(screen_width / 2 - width / 2)
-          center_y = int(screen_height / 2 - height / 2)
+            center_x = int(screen_width / 2 - width / 2)
+            center_y = int(screen_height / 2 - height / 2)
         elif self.system_platform == "Windows":
-          center_x = int(screen_width / 2 - width / 4)
-          center_y = int(screen_height / 2 - height / 4)
+            center_x = int(screen_width / 2 - width / 4)
+            center_y = int(screen_height / 2 - height / 4)
         # set the position of the self to the center of the screen
         self.geometry(f"{width}x{height}+{center_x}+{center_y}")
 
@@ -345,15 +345,15 @@ class App(ctk.CTk):
                 case _:
                     return "error"
 
-        def toAscii(num: float) -> str:
-            return chr(int(num))
-
         if self.serial_status:
             for i in range(5):
                 if self.gain_enable[i]:
-                    bytes = f"{switchSign(i)}{toAscii(self.gain_values[i])}{toAscii(self.gain_values[i] % 1 * 256)}\0"
-                    print(f"Send:{bytes}")
-                    self.serial.write(bytes.encode())
+                    bytes = list(map(lambda x: ord(x), list(switchSign(i))))
+                    bytes.append(int(self.gain_values[i]))
+                    bytes.append(int(self.gain_values[i] % 1 * 256))
+                    bytes.append(0)
+                    print(f"Send:{bytes} \t Hex:0x" + f"{hex(int( self.gain_values[i] * 256 )).replace('0x', '')}".zfill(4))
+                    self.serial.write(bytes)
         else:
             print("Please Connect to Serial")
             messagebox.showError("Please Connect Serial Port")