diff --git a/libraries/IRremote/src/private/IRTimer.hpp b/libraries/IRremote/src/private/IRTimer.hpp
index 2d3c403..c34dd52 100644
--- a/libraries/IRremote/src/private/IRTimer.hpp
+++ b/libraries/IRremote/src/private/IRTimer.hpp
@@ -2072,9 +2072,15 @@ extern "C" void __attribute__((noinline, section(".ram_text"), optimize("O3")))
   TIM16_CLEAR_INT_MASK(htimer16_0, 0xFFFFFFFF); // reset timer interrupt flags
 }
 
+// -------------------------- sending -------------------------- //
 # if defined(SEND_PWM_BY_TIMER)
-#include "pins_arduino.h"
-#define IR_SEND_PIN        3
+#include "pins_arduino.h" 
+
+#  if defined(ARDUINO_START_MIK32_V1)
+#define IR_SEND_PIN     P0_0
+#  else
+#define IR_SEND_PIN     3
+#  endif    // START_MIK32_V1
 
 static TIMER32_HandleTypeDef            ir_sender_htimer;
 static TIMER32_CHANNEL_HandleTypeDef    ir_sender_htimer_channel;