diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index 4128b131..5b1b7286 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -800,6 +800,7 @@ void write_wave(int i, short int *buffer)
 //		else
 			buffer[ctr++] = (short int)(0.25 * amplitude * phase);
 		        Serial.print(buffer[ctr - 1]);
+		        Serial.print(" ");
 	}
 	else
 	{