удалила лишнее, протестировала

libraries/IRremote/examples/SimpleReceiver/SimpleReceiver.ino

@@ -67,11 +67,18 @@
 /*
  * This include defines the actual pin number for pins like IR_RECEIVE_PIN, IR_SEND_PIN for many different boards and architectures
  */
-#include "PinDefinitionsAndMore.h"
+// #include "PinDefinitionsAndMore.h"
 #include <IRremote.hpp> // include the library
 
+#if !defined(STR_HELPER)
+#define STR_HELPER(x) #x
+#define STR(x) STR_HELPER(x)
+#endif
+
+#define IR_RECEIVE_PIN  2
+
 void setup() {
-    Serial.begin(115200);
+    Serial.begin(9600);
     while (!Serial)
         ; // Wait for Serial to become available. Is optimized away for some cores.