diff --git a/README.md b/README.md
index 00a4b03..9a6bac8 100644
--- a/README.md
+++ b/README.md
@@ -43,7 +43,7 @@ We are open to suggestions for adding support to new boards, however we highly r
 | [ATtiny84](https://github.com/SpenceKonde/ATTinyCore)                    | **6**               | **1**             |
 | [ATtiny85](https://github.com/SpenceKonde/ATTinyCore)                    | **1**               | **TINY0**         |
 | [ATmega8](https://github.com/MCUdude/MiniCore)                           | **9**               | **1**             |
-| Atmega32u4                                                               | 5, 9, **13**        | 1, 3, **4**       |
+| Atmega32u4                                                               | 5, **9**, 13        | 1, 3, **4**       |
 | [ATmega48, ATmega88, ATmega168, ATmega328](https://github.com/MCUdude/MiniCore) | **3**, 9     | 1, **2**          |
 | [ATmega1284](https://github.com/MCUdude/MightyCore)                      | 13, 14, 6           | 1, **2**, 3       |
 | [ATmega164, ATmega324, ATmega644](https://github.com/MCUdude/MightyCore) | 13, **14**          | 1, **2**          |
diff --git a/boarddefs.h b/boarddefs.h
index 17e2551..9ac9491 100644
--- a/boarddefs.h
+++ b/boarddefs.h
@@ -85,8 +85,8 @@
 // Teensy 2.0
 #elif defined(__AVR_ATmega32U4__)
 	//#define IR_USE_TIMER1   // tx = pin 14
-	//#define IR_USE_TIMER3   // tx = pin 9
-	#define IR_USE_TIMER4_HS  // tx = pin 10
+	#define IR_USE_TIMER3   // tx = pin 9
+	//#define IR_USE_TIMER4_HS  // tx = pin 10
 
 // Teensy 3.0 / Teensy 3.1
 #elif defined(__MK20DX128__) || defined(__MK20DX256__) || defined(__MK64FX512__) || defined(__MK66FX1M0__)
diff --git a/changelog.md b/changelog.md
index 81339f2..a3adbfe 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,3 +1,9 @@
+## 3.0.0 - 2017/09/14
+- Changed default send pin on ATmega32u4 from 13 to 9.
+	Note: this is a non-backwards compatible change as the behaviour of existing programs using this board for receiving WILL be affected. If you would like to use pin 13 as before then please search src/boarddefs.h for "32u4" and comment the line for pin 9 while uncommenting the line for pin 13
+
+
+
 ## 2.3.3 - 2017/03/31
 - Added ESP32 IR receive support [PR #427](https://github.com/z3t0/Arduino-IRremote/pull/425)