diff --git a/addon/tools/wav2c.sh b/addon/tools/wav2c.sh
index 719de7d..23e21d2 100755
--- a/addon/tools/wav2c.sh
+++ b/addon/tools/wav2c.sh
@@ -3,15 +3,19 @@
 # Converter for WAV to C Header
 # Used for MicroDexed sampler
 #
-# (C)2021 Holger Wirtz
+# (C)2021-2022 Holger Wirtz
 #
 
+
 SOX=`which sox`
 XXD=`which xxd`
 TMP="/tmp/wav2c"
 AUDIO_BLOCK_SIZE=128
 DRUMSET_H="drumset.h"
 DRUMS_H="${TMP}/drums.h"
+MAX_NUM_DRUMSET_CONFIG=71	# ARDUINO_TEENSY41
+#MAX_NUM_DRUMSET_CONFIG=40	# ARDUINO_TEENSY40
+#MAX_NUM_DRUMSET_CONFIG=19	# ...
 
 function cleanexit()
 {
@@ -48,6 +52,11 @@ while [[ $# -gt 0 ]]; do
       shift # past argument
       shift # past value
       ;;
+    -n|--num)
+      MAX_NUM_DRUMSET_CONFIG="$2"
+      shift # past argument
+      shift # past value
+      ;;
 #    -t|--test)
 #      TEST="true"
 #      shift # past argument
@@ -120,6 +129,11 @@ do
 
 	if [ -f "${WAV_DIR}/${sample['filename']}" ]
 	then
+		if [ ${NUM_DRUMSET_CONFIG} -gt ${MAX_NUM_DRUMSET_CONFIG} ]
+		then
+			echo "/*" >> "${DRUMSET_H}"
+		fi
+
 		file "${WAV_DIR}/${sample['filename']}" | grep -i -q "WAVE audio"
 		if [ "${?}" == 0 ]
 		then
@@ -167,6 +181,10 @@ do
 			fi	
 
 			# Generate drums.h
+			if [ ${NUM_DRUMSET_CONFIG} -gt ${MAX_NUM_DRUMSET_CONFIG} ]
+			then
+				echo "/*" >> "${DRUMS_H}"
+			fi
 			cat >> "${DRUMS_H}" << EOF
   {
     ${sample[class]},
@@ -184,7 +202,14 @@ do
     ${sample[reverb_send]}
   },
 EOF
+			if [ ${NUM_DRUMSET_CONFIG} -gt ${MAX_NUM_DRUMSET_CONFIG} ]
+			then
+				echo "*/" >> "${DRUMS_H}"
+				echo "*/" >> "${DRUMSET_H}"
+			fi
 			NUM_DRUMSET_CONFIG=`expr "${NUM_DRUMSET_CONFIG}" + 1` 
+		else
+			echo "File ${WAV_DIR}/${sample['filename']} is not a WAV audio file"
 		fi
 	else
 		echo "File \'${WAV_DIR}/${sample['filename']}\' does not exits." >&2