diff --git a/src/main.cpp b/src/main.cpp
index 469762b..39b8db4 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,24 +1,19 @@
 #include <Arduino.h>
 
-#define EXTERNAL_RX_PIN 16 // GPIO pin for the external device's TX
-#define EXTERNAL_TX_PIN 17 // GPIO pin for the external device's RX
+#define EXTERNAL_RX_PIN 16
+#define EXTERNAL_TX_PIN 17
 #define BAUD_RATE 115200
 
 void setup() {
-  // Initialize communication with the computer (via USB-to-UART chip)
   Serial.begin(BAUD_RATE); 
-  
-  // Initialize communication with the external device (on designated GPIO pins)
   Serial2.begin(BAUD_RATE, SERIAL_8N1, EXTERNAL_RX_PIN, EXTERNAL_TX_PIN);
 }
 
 void loop() {
-  // Read from computer (Serial) and send to external device (Serial2)
   if (Serial.available()) {
     Serial2.write(Serial.read());
   }
 
-  // Read from external device (Serial2) and send to computer (Serial)
   if (Serial2.available()) {
     Serial.write(Serial2.read());
   }