diff --git a/Marlin/Marlin_main.cpp b/Marlin/Marlin_main.cpp
index 0580553aa..e41665df3 100644
--- a/Marlin/Marlin_main.cpp
+++ b/Marlin/Marlin_main.cpp
@@ -117,6 +117,7 @@
 // M220 S<factor in percent>- set speed factor override percentage
 // M221 S<factor in percent>- set extrude factor override percentage
 // M240 - Trigger a camera to take a photograph
+// M300 - Play beepsound S<frequency Hz> P<duration ms>
 // M301 - Set PID parameters P I and D
 // M302 - Allow cold extrudes
 // M303 - PID relay autotune S<temperature> sets the target temperature. (default target temperature = 150C)
@@ -1431,6 +1432,20 @@ void process_commands()
       }
     }
     break;
+    
+    #if defined(LARGE_FLASH) && LARGE_FLASH == true && defined(BEEPER) && BEEPER > -1
+    case 300: // M300
+    {
+      int beepS = 1;
+      int beepP = 1000;
+      if(code_seen('S')) beepS = code_value();
+      if(code_seen('P')) beepP = code_value();
+      tone(BEEPER, beepS);
+      delay(beepP);
+      noTone(BEEPER);
+    }
+    break;
+    #endif // M300
 
     #ifdef PIDTEMP
     case 301: // M301
diff --git a/Marlin/pins.h b/Marlin/pins.h
index 6191ed288..dd86b2d3c 100644
--- a/Marlin/pins.h
+++ b/Marlin/pins.h
@@ -321,6 +321,8 @@
 
 #if MOTHERBOARD == 33 || MOTHERBOARD == 34
 
+#define LARGE_FLASH        true
+
 #define X_STEP_PIN         54
 #define X_DIR_PIN          55
 #define X_ENABLE_PIN       38
@@ -789,6 +791,8 @@
  #endif
 #endif
 
+#define LARGE_FLASH true
+
 #define X_STEP_PIN 25
 #define X_DIR_PIN 23
 #define X_MIN_PIN 22
@@ -924,6 +928,8 @@
  #endif
 #endif
 
+#define LARGE_FLASH true
+
 #define X_STEP_PIN 25
 #define X_DIR_PIN 23
 #define X_MIN_PIN 15
@@ -1080,6 +1086,8 @@
 #error Oops!  Make sure you have 'Teensy++ 2.0' selected from the 'Tools -> Boards' menu.
 #endif
 
+#define LARGE_FLASH        true
+
 #define X_STEP_PIN          0
 #define X_DIR_PIN           1
 #define X_ENABLE_PIN       39
@@ -1413,6 +1421,8 @@
 #error Oops!  Make sure you have 'Arduino Mega 2560' selected from the 'Tools -> Boards' menu.
 #endif
 
+#define LARGE_FLASH true
+
 #define X_STEP_PIN 37
 #define X_DIR_PIN 48
 #define X_MIN_PIN 12
@@ -1488,7 +1498,7 @@
  #endif
 
 
-
+#define LARGE_FLASH        true
 
 #define X_STEP_PIN         26
 #define X_DIR_PIN          28