diff --git a/00scratch/dualmotor2.sb2 b/00scratch/dualmotor2.sb2
new file mode 100644
index 0000000..00da816
Binary files /dev/null and b/00scratch/dualmotor2.sb2 differ
diff --git a/00scratch/twin-motor.sb2 b/00scratch/motor-test.sb2
similarity index 100%
rename from 00scratch/twin-motor.sb2
rename to 00scratch/motor-test.sb2
diff --git a/00scratch/s2microbit_EN_nowait.s2e b/00scratch/s2microbit_EN_nowait.s2e
new file mode 100644
index 0000000..7d7d2da
--- /dev/null
+++ b/00scratch/s2microbit_EN_nowait.s2e
@@ -0,0 +1,222 @@
+{
+    "extensionName": "s2microbit-ble",
+    "extensionPort": 50209,
+    "url": "https://github.com/memakura/s2microbit-ble",
+    "blockSpecs": [
+        [
+            " ",
+            "Display %m.images",
+	        "display_image",
+	        "HAPPY"
+        ],
+        [
+            " ",
+            "Scroll %s",
+            "scroll",
+            "Hello!"
+        ],
+        [
+            " ",
+            "Write Pixel X %n Y %n Intensity %m.val",
+            "write_pixel",
+            "0",
+            "0",
+            "1"
+        ],
+        [
+            " ",
+            "Display pattern %n",
+            "display_pattern",
+            "11001 01111 01110 11110 10011"
+        ],
+        [
+            " ",
+            "Clear Display",
+            "display_clear"
+        ],
+        [
+            " ",
+            "Setup Pin %m.pins as %m.admodes %m.iomodes",
+            "setup_pin",
+            "0",
+            "Digital",
+            "Output"
+        ],
+        [
+            " ",
+            "Digital Write Pin %m.pins Value %m.val",
+            "digital_write",
+            "0",
+            "0"
+        ],
+        [
+            " ",
+            "Analog Write Pin %m.pins Value %n",
+            "analog_write",
+            "0",
+            "0"
+        ],
+        [
+            "b",
+            "Button A pressed?",
+            "button_a_pressed"
+        ],
+        [
+            "b",
+            "Button B pressed?",
+            "button_b_pressed"
+        ],
+        [
+            "b",
+            "Tilted right?",
+            "tilted_right"
+        ],
+        [
+            "b",
+            "Tilted left?",
+            "tilted_left"
+        ],
+        [
+            "b",
+            "Tilted up?",
+            "tilted_up"
+        ],
+        [
+            "b",
+            "Tilted down?",
+            "tilted_down"
+        ],
+        [
+            "b",
+            "Shaken?",
+            "shaken"
+        ],
+        [
+            "r",
+            "Digital Read Pin %m.pins",
+            "digital_read",
+            "0"
+        ],
+        [
+            "r",
+            "Analog Read Pin %m.ain_pins",
+            "analog_read",
+            "0"
+        ],
+        [
+            "r",
+            "Temperature",
+            "temperature"
+        ],
+        [
+            "r",
+            "Magnetometer Bearing",
+            "magBearing"
+        ],
+        [
+            "r",
+            "Magnetometer X",
+            "mag_x"
+        ],
+        [
+            "r",
+            "Magnetometer Y",
+            "mag_y"
+        ],
+        [
+            "r",
+            "Magnetometer Z",
+            "mag_z"
+        ],
+        [
+            "r",
+            "Accelerometer X",
+            "acc_x"
+        ],
+        [
+            "r",
+            "Accelerometer Y",
+            "acc_y"
+        ],
+        [
+            "r",
+            "Accelerometer Z",
+            "acc_z"
+        ]
+    ],
+    "menus": {
+	"images": [
+            "HAPPY",
+            "SAD",
+            "ANGRY",
+            "SMILE",
+            "HEART",
+            "CONFUSED",
+            "ASLEEP",
+            "SURPRISED",
+            "SILLY",
+            "FABULOUS",
+            "MEH",
+            "YES",
+            "NO",
+            "TRIANGLE",
+            "DIAMOND",
+            "DIAMOND_SMALL",
+            "SQUARE",
+            "SQUARE_SMALL",
+            "TARGET",
+            "STICKFIGURE",
+            "RABBIT",
+            "COW",
+            "ROLLERSKATE",
+            "HOUSE",
+            "SNAKE",
+            "ARROW_N",
+            "ARROW_NE",
+            "ARROW_E",
+            "ARROW_SE",
+            "ARROW_S",
+            "ARROW_SW",
+            "ARROW_W",
+            "ARROW_NW",
+            "HEART_SMALL",
+            "TRIANGLE_LEFT",
+            "CHESSBOARD",
+            "PITCHFORK",
+            "XMAS",
+            "TSHIRT",
+            "SWORD",
+            "UMBRELLA",
+            "DUCK",
+            "TORTOISE",
+            "BUTTERFLY",
+            "GIRAFFE",
+            "SKULL",
+            "MUSIC_CROTCHET",
+            "MUSIC_QUAVER",
+            "MUSIC_QUAVERS",
+            "SCISSORS",
+            "PACMAN",
+            "GHOST"
+	    ],
+        "pins": [
+            "0", "1", "2",
+            "8", "13", "14", "15", "16"
+        ],
+        "ain_pins": [
+            "0", "1", "2"
+        ],
+        "val": [
+            "0",
+	        "1"
+        ],
+        "iomodes": [
+            "Input",
+            "Output"
+        ],
+        "admodes": [
+            "Digital",
+            "Analog"
+        ]
+    }
+}
diff --git a/00scratch/s2microbit_JA_nowait.s2e b/00scratch/s2microbit_JA_nowait.s2e
new file mode 100644
index 0000000..516c6bc
--- /dev/null
+++ b/00scratch/s2microbit_JA_nowait.s2e
@@ -0,0 +1,222 @@
+{
+    "extensionName": "s2microbit-ble",
+    "extensionPort": 50209,
+    "url": "https://github.com/memakura/s2microbit-ble",
+    "blockSpecs": [
+        [
+            " ",
+            "%m.images を表示",
+	        "display_image",
+	        "01_うれしい顔"
+        ],
+        [
+            " ",
+            "文字列を表示 %s",
+            "scroll",
+            "Hello!"
+        ],
+        [
+            " ",
+            "点灯 X %n Y %n 明るさ %m.val",
+            "write_pixel",
+            "0",
+            "0",
+            "1"
+        ],
+        [
+            " ",
+            "パターン %n を表示",
+            "display_pattern",
+            "11001 01111 01110 11110 10011"
+        ],
+        [
+            " ",
+            "表示を消す",
+            "display_clear"
+        ],
+        [
+            " ",
+            "端子 %m.pins を %m.admodes %m.iomodes に使う",
+            "setup_pin",
+            "0",
+            "D:デジタル",
+            "O:出力"
+        ],
+        [
+            " ",
+            "デジタルで出力する 端子 %m.pins 値 %m.val",
+            "digital_write",
+            "0",
+            "0"
+        ],
+        [
+            " ",
+            "アナログで出力する 端子 %m.pins 値 %n",
+            "analog_write",
+            "0",
+            "0"
+        ],
+        [
+            "b",
+            "ボタンAが押されている",
+            "button_a_pressed"
+        ],
+        [
+            "b",
+            "ボタンBが押されている",
+            "button_b_pressed"
+        ],
+        [
+            "b",
+            "右にかたむいている",
+            "tilted_right"
+        ],
+        [
+            "b",
+            "左にかたむいている",
+            "tilted_left"
+        ],
+        [
+            "b",
+            "おくの方が上がっている",
+            "tilted_up"
+        ],
+        [
+            "b",
+            "おくの方が下がっている",
+            "tilted_down"
+        ],
+        [
+            "b",
+            "ゆさぶられている",
+            "shaken"
+        ],
+        [
+            "r",
+            "デジタルで読み取る 端子 %m.pins",
+            "digital_read",
+            "0"
+        ],
+        [
+            "r",
+            "アナログ値を読み取る 端子 %m.ain_pins",
+            "analog_read",
+            "0"
+        ],
+        [
+            "r",
+            "温度",
+            "temperature"
+        ],
+        [
+            "r",
+            "磁気センサ角度",
+            "magBearing"
+        ],
+        [
+            "r",
+            "磁気センサ X",
+            "mag_x"
+        ],
+        [
+            "r",
+            "磁気センサ Y",
+            "mag_y"
+        ],
+        [
+            "r",
+            "磁気センサ Z",
+            "mag_z"
+        ],
+        [
+            "r",
+            "加速度センサ X",
+            "acc_x"
+        ],
+        [
+            "r",
+            "加速度センサ Y",
+            "acc_y"
+        ],
+        [
+            "r",
+            "加速度センサ Z",
+            "acc_z"
+        ]
+    ],
+    "menus": {
+	"images": [
+            "01_うれしい顔",
+            "02_かなしい顔",
+            "03_おこり顔",
+            "04_スマイル",
+            "05_ハート",
+            "06_こまり顔",
+            "07_ねてる顔",
+            "08_びっくり顔",
+            "09_へん顔",
+            "10_すばらしい",
+            "11_ふーん",
+            "12_チェック",
+            "13_バツ",
+            "14_三角",
+            "15_ダイアモンド",
+            "16_小さいダイアモンド",
+            "17_しかく",
+            "18_小さいしかく",
+            "19_まと",
+            "20_棒人間",
+            "21_うさぎ",
+            "22_うし",
+            "23_ローラースケート",
+            "24_家",
+            "25_へび",
+            "26_上矢印",
+            "27_右上矢印",
+            "28_右矢印",
+            "29_右下矢印",
+            "30_下矢印",
+            "31_左下矢印",
+            "32_左矢印",
+            "33_左上矢印",
+            "34_小さいハート",
+            "35_左向き三角",
+            "36_チェスボード",
+            "37_くまで",
+            "38_クリスマス",
+            "39_Tシャツ",
+            "40_剣",
+            "41_かさ",
+            "42_あひる",
+            "43_かめ",
+            "44_ちょうちょ",
+            "45_きりん",
+            "46_がいこつ",
+            "47_四分音符",
+            "48_八分音符",
+            "49_二連符",
+            "50_はさみ",
+            "51_パックマン",
+            "52_おばけ"
+	    ],
+        "pins": [
+            "0", "1", "2",
+            "8", "13", "14", "15", "16"
+        ],
+        "ain_pins": [
+            "0", "1", "2"
+        ],
+        "val": [
+            "0",
+	        "1"
+        ],
+        "iomodes": [
+            "I:入力",
+            "O:出力"
+        ],
+        "admodes": [
+            "D:デジタル",
+            "A:アナログ"
+        ]        
+    }
+}
diff --git a/app/s2microbit-ble.js b/app/s2microbit-ble.js
index ec5adc8..67aee5e 100644
--- a/app/s2microbit-ble.js
+++ b/app/s2microbit-ble.js
@@ -563,12 +563,12 @@ function writeLedBuffer(error) {
 //--- LED display preset image
 // nowait block
 exapp.get('/display_image/:name', function(req, res) {
-  logBothConsole('no command');  // if (debug)
+  if (debug) logBothConsole('no command');
   res.send(display_image(false, req.params.name));
 });
 // wait block
 exapp.get('/display_image/:command_id/:name', function(req, res) {
-  logBothConsole('command_id: ' + req.params.command_id);  // if (debug)
+  if (debug) logBothConsole('command_id: ' + req.params.command_id);
   res.send(display_image(req.params.command_id, req.params.name));
 });
 function display_image(command_id, name) {
@@ -590,12 +590,12 @@ function display_image(command_id, name) {
 //--- LED dot
 // nowait block
 exapp.get('/write_pixel/:x/:y/:value', function(req, res){
-  logBothConsole('no command');  // if (debug)
+  if (debug) logBothConsole('no command');
   res.send(write_pixel(false, req.params.x, req.params.y, req.params.value));
 });
 // wait block
 exapp.get('/write_pixel/:command_id/:x/:y/:value', function(req, res){
-  logBothConsole('command_id: ' + req.params.command_id);  // if (debug)
+  if (debug) logBothConsole('command_id: ' + req.params.command_id);
   res.send(write_pixel(req.params.command_id, req.params.x, req.params.y, req.params.value));
 });
 function write_pixel(command_id, x, y, val) {
@@ -631,19 +631,19 @@ function write_pixel(command_id, x, y, val) {
 //--- LED display custom pattern
 // nowait block
 exapp.get('/display_pattern/:binstr', function(req, res) {
-  logBothConsole('no command');  // if (debug)
+  if (debug) logBothConsole('no command');
   res.send(display_pattern(false, req.params.binstr));
 });
 // wait block
 exapp.get('/display_pattern/:command_id/:binstr', function(req, res) {
-  logBothConsole('command_id: ' + req.params.command_id);  // if (debug)
+  if (debug) logBothConsole('command_id: ' + req.params.command_id);
   res.send(display_pattern(req.params.command_id, req.params.binstr));
 });
 function display_pattern(command_id, binstr) {
   if (device !== null) {
     if (command_id) waiting_commands.add(command_id);
     try {
-      logBothConsole('microbit: [display_pattern] str= ' + binstr);
+      logBothConsole('[display_pattern] ' + binstr);
       // check
       if ( ! /^[01]{5} [01]{5} [01]{5} [01]{5} [01]{5}$/.test(binstr) ) {
         logBothConsole('error: illegal pattern');
@@ -678,12 +678,12 @@ function display_pattern(command_id, binstr) {
 //--- clear LED
 // nowait block
 exapp.get('/display_clear', function(req, res){
-  logBothConsole('no command');  // if (debug)
+  if (debug) logBothConsole('no command');
   res.send(display_clear(false));
 });
 // wait block
 exapp.get('/display_clear/:command_id', function(req, res){
-  logBothConsole('command_id: ' + req.params.command_id);  // if (debug)
+  if (debug) logBothConsole('command_id: ' + req.params.command_id);
   res.send(display_clear(req.params.command_id));
 });
 function display_clear(command_id) {
@@ -706,12 +706,12 @@ function display_clear(command_id) {
 //--- Setup pin mode
 // nowait block
 exapp.get('/setup_pin/:pin/:admode/:iomode', function(req, res) {
-  logBothConsole('no command_id');  // if (debug)
+  if (debug) logBothConsole('no command_id');
   res.send(setup_pin(false, req.params.pin, req.params.admode, req.params.iomode));
 });
 // wait block
 exapp.get('/setup_pin/:command_id/:pin/:admode/:iomode', function(req, res) {
-  logBothConsole('command_id: ' + req.params.command_id);  // if (debug)
+  if (debug) logBothConsole('command_id: ' + req.params.command_id);
   res.send(setup_pin(req.params.command_id, req.params.pin, req.params.admode, req.params.iomode));
 });
 function setup_pin(command_id, pin, admode, iomode) {
@@ -757,12 +757,12 @@ function setup_pin(command_id, pin, admode, iomode) {
 //--- Digital write
 // nowait block
 exapp.get('/digital_write/:pin/:value', function(req, res) {
-  logBothConsole('no command_id');  // if (debug)
+  if (debug) logBothConsole('no command_id');
   res.send(digital_write(false, req.params.pin, req.params.value));
 });
 // wait block
 exapp.get('/digital_write/:command_id/:pin/:value', function(req, res) {
-  logBothConsole('command_id: ' + req.params.command_id);  // if (debug)
+  if (debug) logBothConsole('command_id: ' + req.params.command_id);
   res.send(digital_write(req.params.command_id, req.params.pin, req.params.value));
 });
 function digital_write(command_id, pin, value) {
@@ -806,11 +806,11 @@ function digital_write(command_id, pin, value) {
 
 //--- Analog write
 exapp.get('/analog_write/:pin/:value', function(req, res) {
-  logBothConsole('no command_id');  // if (debug)
+  if (debug) logBothConsole('no command_id');
   res.send(analog_write(false, req.params.pin, req.params.value));
 });
 exapp.get('/analog_write/:command_id/:pin/:value', function(req, res) {
-  logBothConsole('command_id: ' + req.params.command_id);  // if (debug)
+  if (debug) logBothConsole('command_id: ' + req.params.command_id);
   res.send(analog_write(req.params.command_id, req.params.pin, req.params.value));
 });
 function analog_write(command_id, pin, value) {