diff --git a/libraries/IRremote/examples/SendLGAirConditionerDemo/SendLGAirConditionerDemo.ino b/libraries/IRremote/examples/SendLGAirConditionerDemo/SendLGAirConditionerDemo.ino
index 17a7bd2..dd8dd11 100644
--- a/libraries/IRremote/examples/SendLGAirConditionerDemo/SendLGAirConditionerDemo.ino
+++ b/libraries/IRremote/examples/SendLGAirConditionerDemo/SendLGAirConditionerDemo.ino
@@ -53,7 +53,7 @@
 #define STR(x) STR_HELPER(x)
 #endif
 
-#define IR_SEND_PIN 3
+#define IR_SEND_PIN 3 // P0_0
 
 #include <IRremote.hpp>
 
diff --git a/libraries/IRremote/examples/SendProntoDemo/SendProntoDemo.ino b/libraries/IRremote/examples/SendProntoDemo/SendProntoDemo.ino
index bf12635..fe53aee 100644
--- a/libraries/IRremote/examples/SendProntoDemo/SendProntoDemo.ino
+++ b/libraries/IRremote/examples/SendProntoDemo/SendProntoDemo.ino
@@ -32,7 +32,7 @@
  */
 #include <Arduino.h>
 
-#define IR_SEND_PIN 3
+#define IR_SEND_PIN 3 // P0_0
 
 /*
  * Helper macro for getting a macro definition as string
diff --git a/libraries/IRremote/examples/SendRawDemo/SendRawDemo.ino b/libraries/IRremote/examples/SendRawDemo/SendRawDemo.ino
index cd8c4c3..8e14f0a 100644
--- a/libraries/IRremote/examples/SendRawDemo/SendRawDemo.ino
+++ b/libraries/IRremote/examples/SendRawDemo/SendRawDemo.ino
@@ -41,7 +41,7 @@
 //#define USE_NO_SEND_PWM           // Use no carrier PWM, just simulate an active low receiver signal. Overrides SEND_PWM_BY_TIMER definition
 //#define NO_LED_FEEDBACK_CODE      // Saves 566 bytes program memory
 
-#define IR_SEND_PIN 3
+#define IR_SEND_PIN 3 // P0_0
 /*
  * Helper macro for getting a macro definition as string
  */
diff --git a/libraries/IRremote/examples/SimpleSender/SimpleSender.ino b/libraries/IRremote/examples/SimpleSender/SimpleSender.ino
index 952a4ad..66198eb 100644
--- a/libraries/IRremote/examples/SimpleSender/SimpleSender.ino
+++ b/libraries/IRremote/examples/SimpleSender/SimpleSender.ino
@@ -13,10 +13,10 @@
  */
 #include <Arduino.h>
 
-#define SEND_PWM_BY_TIMER         // Disable carrier PWM generation in software and use (restricted) hardware PWM.
+//#define SEND_PWM_BY_TIMER         // Disable carrier PWM generation in software and use (restricted) hardware PWM.
 //#define USE_NO_SEND_PWM           // Use no carrier PWM, just simulate an active low receiver signal. Overrides SEND_PWM_BY_TIMER definition
 
-#define IR_SEND_PIN   5
+#define IR_SEND_PIN  3  // P0_0
 
 #include <IRremote.hpp> // include the library
 
diff --git a/libraries/IRremote/examples/TinySender/TinySender.ino b/libraries/IRremote/examples/TinySender/TinySender.ino
index 120d8f7..426aad6 100644
--- a/libraries/IRremote/examples/TinySender/TinySender.ino
+++ b/libraries/IRremote/examples/TinySender/TinySender.ino
@@ -46,7 +46,7 @@
  */
 #include <Arduino.h>
 
-#define IR_SEND_PIN 3
+#define IR_SEND_PIN 3 // P0_0
 
 
 #include "TinyIRSender.hpp"