diff --git a/bell/platformio.ini b/bell/platformio.ini
new file mode 100644
index 0000000..82bcb25
--- /dev/null
+++ b/bell/platformio.ini
@@ -0,0 +1,30 @@
+[platformio]
+default_envs = nodemcuv2
+
+[env]
+framework = arduino
+upload_speed = 921600
+upload_port =
+  /dev/ttyUSB0
+  /dev/tty.SLAB_USBtoUART
+lib_deps =
+  SPI
+  Wire
+  64 ; ArduinoJson
+  1269 ; Painless Mesh
+
+[env:nodemcuv2]
+platform = espressif8266
+board = nodemcuv2
+lib_deps =
+  ${env.lib_deps}
+  ESP8266WiFi
+  Servo(esp8266)
+
+[env:huzzah]
+platform = espressif8266
+board = huzzah
+lib_deps =
+  ${env.lib_deps}
+  ESP8266WiFi
+  Servo(esp8266)
diff --git a/bell/src/main.cpp b/bell/src/main.cpp
new file mode 100644
index 0000000..dedb3eb
--- /dev/null
+++ b/bell/src/main.cpp
@@ -0,0 +1,427 @@
+//
+// wirelessly connected cloud (Wireless Mesh Networking)
+// MIDI-like
+// spacial
+// sampler keyboard
+//
+
+//
+// Forest all/around @ MMCA, Seoul
+//
+
+//
+// 2020 10 14
+//
+
+//==========<configurations>===========
+//
+// 'DISABLE_AP'
+// --> disabling AP is for teensy audio samplers.
+//     they need this to reduce noise from AP beacon signals.
+//     but, then they cannot build-up net. by themselves.
+//     we need who can do AP..
+//     ==> TODO! just prepare some 'dummy' postmans around. w/ AP activated.
+//
+// 'DISABLE_I2C_REQ'
+// --> a quirk.. due to bi-directional I2C hardship.
+//     ideally, we want to make this sampler node also speak.
+//     but, I2C doesn't work. maybe middleware bug.. we later want to change to diff. proto.
+//     for example, UART or so.
+//     ==> BEWARE! yet, still we need to take off this.. for 'osc' node.
+//
+// 'SET_ROOT'
+// 'SET_CONTAINSROOT'
+// --> for the network stability
+//     declare 1 root node and branches(constricted to 'contains the root')
+//     to improve the stability of the net
+//
+//==========</configurations>==========
+
+//==========<preset>===========
+#define SET_CONTAINSROOT
+//==========</preset>==========
+
+//============<gastank>============
+#define BELL_HIT_KEY 105
+//============</gastank>===========
+
+//============<parameters>============
+#define MESH_SSID "forest-all/around"
+#define MESH_PASSWORD "cc*vvvv/kkk"
+#define MESH_PORT 5555
+#define MESH_CHANNEL 5
+#define LONELY_TO_DIE    (1000)
+//============</parameters>===========
+
+//
+// LED status indication
+// phase 0
+//    - LED => steady on
+//    - booted. and running. no connection. scanning.
+// phase 1
+//    - LED => slow blinking (syncronized)
+//    - + connected.
+//
+#if defined(ARDUINO_ESP8266_NODEMCU) // nodemcuv2
+#define LED_PIN 2
+#elif defined(ARDUINO_ESP8266_ESP12) // huzzah
+#define LED_PIN 2
+#elif defined(ARDUINO_FEATHER_ESP32) // featheresp32
+#define LED_PIN 13
+#elif defined(ARDUINO_NodeMCU_32S) // nodemcu-32s
+#define LED_PIN 2
+#endif
+#define LED_PERIOD (1111)
+#define LED_ONTIME (1)
+
+//arduino
+#include <Arduino.h>
+
+//i2c
+#include <Wire.h>
+#include "../../post.h"
+
+//painlessmesh
+#include <painlessMesh.h>
+painlessMesh mesh;
+
+//scheduler
+Scheduler runner;
+
+//task #0 : connection indicator
+bool onFlag = false;
+bool isConnected = false;
+//prototypes
+void taskStatusBlink_steadyOn();
+void taskStatusBlink_slowblink_insync();
+void taskStatusBlink_steadyOff();
+//the task
+Task statusblinks(0, 1, &taskStatusBlink_steadyOn); // at start, steady on. default == disabled. ==> setup() will enable.
+// when disconnected, and trying, steadyon.
+void taskStatusBlink_steadyOn() {
+  onFlag = true;
+}
+// when connected, blink per 1s. sync-ed. (== default configuration)
+void taskStatusBlink_slowblink_insync() {
+  // toggler
+  onFlag = !onFlag;
+  // on-time
+  statusblinks.delay(LED_ONTIME);
+  // re-enable & sync.
+  if (statusblinks.isLastIteration()) {
+    statusblinks.setIterations(2); //refill iteration counts
+    statusblinks.enableDelayed(LED_PERIOD - (mesh.getNodeTime() % (LED_PERIOD*1000))/1000); //re-enable with sync-ed delay
+  }
+}
+// when connected, steadyoff. (== alternative configuration)
+void taskStatusBlink_steadyOff() {
+  onFlag = false;
+}
+
+//task #1 : happy or lonely
+//   --> automatic reset after some time of 'loneliness (disconnected from any node)'
+void nothappyalone() {
+  static bool isConnected_prev = false;
+  static unsigned long lonely_time_start = 0;
+  // oh.. i m lost the signal(==connection)
+  if (isConnected_prev != isConnected && isConnected == false) {
+    lonely_time_start = millis();
+    Serial.println("oh.. i m lost!");
+  }
+  // .... how long we've been lonely?
+  if (isConnected == false) {
+    if (millis() - lonely_time_start > LONELY_TO_DIE) {
+      // okay. i m fed up. bye the world.
+      Serial.println("okay. i m fed up. bye the world.");
+      Serial.println();
+#if defined(ESP8266)
+      ESP.reset();
+#elif defined(ESP32)
+      ESP.restart();
+      // esp32 doesn't support 'reset()' yet...
+      // (restart() is framework-supported, reset() is more forced hardware-reset-action)
+#else
+#error unknown esp.
+#endif
+    }
+  }
+  //
+  isConnected_prev = isConnected;
+}
+// Task nothappyalone_task(1000, TASK_FOREVER, &nothappyalone, &runner, true); // by default, ENABLED.
+Task nothappyalone_task(100, TASK_FOREVER, &nothappyalone); // by default, ENABLED.
+
+// servo
+#define SERVO_PIN D6
+#include <Servo.h>
+Servo myservo;
+#define HITTING_ANGLE 87
+#define RELEASE_ANGLE 60
+#define STABILIZE_ANGLE 53
+
+//
+extern Task hit_task;
+
+//
+extern Task pcontrol_task;
+bool pcontrol_new = false;
+int pcontrol_start = 0;
+int pcontrol_target = 0;
+int control_count = 0;
+
+//
+extern Task servo_release_task;
+
+// my tasks
+// hit!
+void hit() {
+  static int count = 0;
+  if (hit_task.isFirstIteration()) {
+    count = 0;
+    Serial.println("hit! start.");
+  }
+  if (count % 3 == 0) {
+    //
+    myservo.attach(SERVO_PIN);
+    myservo.write(RELEASE_ANGLE);
+    // servo_release_task.restartDelayed(200);
+    //
+  } else if (count % 3 == 1) {
+    //
+    myservo.attach(SERVO_PIN);
+    myservo.write(HITTING_ANGLE);
+    // servo_release_task.restartDelayed(200);
+    //
+    Serial.print("bell, bell, bell! : ");
+    Serial.print(HITTING_ANGLE);
+    Serial.println(" deg.");
+    //
+  } else {
+    //
+    myservo.attach(SERVO_PIN);
+    myservo.write(RELEASE_ANGLE);
+    servo_release_task.restartDelayed(200);
+    //
+    Serial.print("release to .. : ");
+    Serial.print(RELEASE_ANGLE);
+    Serial.println(" deg.");
+    // start stablizing..
+    pcontrol_new = true;
+    pcontrol_start = RELEASE_ANGLE;
+    pcontrol_target = STABILIZE_ANGLE;
+    pcontrol_task.restartDelayed(80);
+    //
+    control_count = 0;
+  }
+  //
+  count++;
+}
+Task hit_task(100, 3, &hit);
+
+// pcontrol
+void pcontrol() {
+  static int angle;
+  if (pcontrol_new == true) {
+    pcontrol_new = false;
+    angle = pcontrol_start;
+  }
+  int error = pcontrol_target - angle;
+  int sign = (error >= 0 ? 1 : -1);
+  //
+  Serial.print("step-by-step to.. : ");
+  Serial.println(sign);
+  //
+  if (error != 0) {
+    angle = angle + sign; // most gentle move : 1 step each time.
+    //
+    Serial.print("stablizing in action ==> next angle : ");
+    Serial.print(angle);
+    Serial.println(" deg.");
+    //
+    myservo.attach(SERVO_PIN);
+    myservo.write(angle);
+    servo_release_task.restartDelayed(50);
+    pcontrol_task.restartDelayed(400);
+  }
+  else {
+    // stand-by processes
+    if (control_count % 2 == 0) {
+      pcontrol_new = true;
+      pcontrol_start = STABILIZE_ANGLE;
+      pcontrol_target = RELEASE_ANGLE;
+      pcontrol_task.restartDelayed(300);
+    } else if (control_count % 2 == 1) {
+      pcontrol_new = true;
+      pcontrol_start = RELEASE_ANGLE;
+      pcontrol_target = STABILIZE_ANGLE;
+      pcontrol_task.restartDelayed(300);
+    }
+    //
+    control_count++;
+  }
+}
+Task pcontrol_task(0, TASK_ONCE, &pcontrol); // hit -> 100ms -> step back -> 50ms -> slowly move to rest pos.
+
+// pcontrol release
+void servo_release() {
+  myservo.detach();
+}
+Task servo_release_task(0, TASK_ONCE, &servo_release);
+
+// mesh callbacks
+void receivedCallback(uint32_t from, String & msg) { // REQUIRED
+  Serial.print("got msg.: ");
+  Serial.println(msg);
+  //parse now.
+
+  //parse letter string.
+
+  // letter frame ( '[' + 30 bytes + ']' )
+  //    : [123456789012345678901234567890]
+
+  // 'MIDI' letter frame
+  //    : [123456789012345678901234567890]
+  //    : [KKKVVVG.......................]
+  //    : KKK - Key
+  //      .substring(1, 4);
+  //    : VVV - Velocity (volume/amp.)
+  //      .substring(4, 7);
+  //    : G - Gate (note on/off)
+  //      .substring(7, 8);
+
+  String str_key = msg.substring(1, 4);
+  String str_velocity = msg.substring(4, 7);
+  String str_gate = msg.substring(7, 8);
+
+  int key = str_key.toInt();
+  int velocity = str_velocity.toInt(); // 0 ~ 127
+  int gate = str_gate.toInt();
+
+  //is it for me, the bell?
+  if (key == BELL_HIT_KEY && gate == 1) {
+    hit_task.restartDelayed(10);
+  }
+}
+void changedConnectionCallback() {
+  Serial.println(mesh.getNodeList().size());
+  // check status -> modify status LED
+  if (mesh.getNodeList().size() > 0) {
+    // (still) connected.
+    onFlag = false; //reset flag stat.
+    statusblinks.set(LED_PERIOD, 2, &taskStatusBlink_slowblink_insync);
+    // statusblinks.set(0, 1, &taskStatusBlink_steadyOff);
+    statusblinks.enable();
+    Serial.println("connected!");
+    //
+    isConnected = true;
+    runner.addTask(nothappyalone_task);
+    nothappyalone_task.enable();
+  }
+  else {
+    // disconnected!!
+    statusblinks.set(0, 1, &taskStatusBlink_steadyOn);
+    statusblinks.enable();
+    //
+    isConnected = false;
+  }
+  // let I2C device know
+  /////
+  Serial.println("hi. client, we ve got a change in the net.");
+}
+void newConnectionCallback(uint32_t nodeId) {
+  Serial.println(mesh.getNodeList().size());
+  Serial.println("newConnectionCallback.");
+  changedConnectionCallback();
+}
+
+void setup() {
+  //led
+  pinMode(LED_PIN, OUTPUT);
+
+  //mesh
+  WiFiMode_t node_type = WIFI_AP_STA;
+#if defined(DISABLE_AP)
+  system_phy_set_max_tpw(0);
+  node_type = WIFI_STA;
+#endif
+  // mesh.setDebugMsgTypes(ERROR | DEBUG | CONNECTION);
+  mesh.setDebugMsgTypes( ERROR | STARTUP );
+  mesh.init(MESH_SSID, MESH_PASSWORD, &runner, MESH_PORT, node_type, MESH_CHANNEL);
+
+  //
+  // void init(String ssid, String password, Scheduler *baseScheduler, uint16_t port = 5555, WiFiMode_t connectMode = WIFI_AP_STA, uint8_t channel = 1, uint8_t hidden = 0, uint8_t maxconn = MAX_CONN);
+  // void init(String ssid, String password, uint16_t port = 5555, WiFiMode_t connectMode = WIFI_AP_STA, uint8_t channel = 1, uint8_t hidden = 0, uint8_t maxconn = MAX_CONN);
+  //
+
+#if defined(SET_ROOT)
+  mesh.setRoot(true);
+#endif
+#if defined(SET_CONTAINSROOT)
+  mesh.setContainsRoot(true);
+#endif
+  //callbacks
+  mesh.onReceive(&receivedCallback);
+  mesh.onNewConnection(&newConnectionCallback);
+  mesh.onChangedConnections(&changedConnectionCallback);
+  Serial.println(mesh.getNodeList().size());
+
+  //tasks
+  runner.addTask(statusblinks);
+  statusblinks.enable();
+
+  //serial
+  Serial.begin(115200);
+  delay(100);
+  Serial.println("hi, postman ready.");
+#if defined(DISABLE_AP)
+  Serial.println("!NOTE!: we are in the WIFI_STA mode!");
+#endif
+
+  //understanding what is 'the nodeId' ==> last 4 bytes of 'softAPmacAddress'
+  // uint32_t nodeId = tcp::encodeNodeId(MAC);
+  Serial.print("nodeId (dec) : ");
+  Serial.println(mesh.getNodeId(), DEC);
+  Serial.print("nodeId (hex) : ");
+  Serial.println(mesh.getNodeId(), HEX);
+  uint8_t MAC[] = {0, 0, 0, 0, 0, 0};
+  if (WiFi.softAPmacAddress(MAC) == 0) {
+    Serial.println("init(): WiFi.softAPmacAddress(MAC) failed.");
+  }
+  Serial.print("MAC : ");
+  Serial.print(MAC[0], HEX); Serial.print(", ");
+  Serial.print(MAC[1], HEX); Serial.print(", ");
+  Serial.print(MAC[2], HEX); Serial.print(", ");
+  Serial.print(MAC[3], HEX); Serial.print(", ");
+  Serial.print(MAC[4], HEX); Serial.print(", ");
+  Serial.println(MAC[5], HEX);
+
+  // for instance,
+
+  // a huzzah board
+  // nodeId (dec) : 3256120530
+  // nodeId (hex) : C21474D2
+  // MAC : BE, DD, C2, 14, 74, D2
+
+  // a esp8266 board (node mcu)
+  // nodeId (dec) : 758581767
+  // nodeId (hex) : 2D370A07
+  // MAC : B6, E6, 2D, 37, A, 7
+
+  //i2c master
+  Wire.begin();
+
+  //tasks
+  runner.addTask(hit_task);
+  runner.addTask(pcontrol_task);
+  runner.addTask(servo_release_task);
+}
+
+void loop() {
+  runner.execute();
+  mesh.update();
+#if defined(ESP32)
+  digitalWrite(LED_PIN, onFlag); // value == true is ON.
+#else
+  digitalWrite(LED_PIN, !onFlag); // value == false is ON. so onFlag == true is ON. (pull-up)
+#endif
+}
diff --git a/buoyfly/src/main.cpp b/buoyfly/src/main.cpp
index 8cc06e2..56c2c41 100644
--- a/buoyfly/src/main.cpp
+++ b/buoyfly/src/main.cpp
@@ -6,12 +6,11 @@
 //
 
 //
-// COSMO40 @ Incheon w/ Factory2
-// RTA @ Seoul w/ Post Territory Ujeongguk
+// Forest all/around @ MMCA, Seoul
 //
 
 //
-// 2019 12 15
+// 2020 10 14
 //
 
 //==========<configurations>===========
diff --git a/crickets/platformio.ini b/crickets/platformio.ini
index 82bcb25..d9d93d6 100755
--- a/crickets/platformio.ini
+++ b/crickets/platformio.ini
@@ -28,3 +28,15 @@ lib_deps =
   ${env.lib_deps}
   ESP8266WiFi
   Servo(esp8266)
+
+[env:esp32]
+build_unflags = -std=gnu++11
+build_flags = -std=gnu++14 ; AsyncTCP wants this.
+platform = espressif32
+board = esp32doit-devkit-v1
+upload_speed = 921600
+; upload_port = /dev/ttyUSB0
+lib_deps =
+  ${env.lib_deps}
+  1826@1.0.3 ; AsyncTCP
+  ESP32Servo
diff --git a/crickets/src/crickets.h b/crickets/src/crickets.h
index 85d6827..a30b014 100644
--- a/crickets/src/crickets.h
+++ b/crickets/src/crickets.h
@@ -1,10 +1,12 @@
 //============<list of crickets>============
-#define CRICKET_A_KEY 120
-#define CRICKET_E_KEY 121
-#define CRICKET_I_KEY 122
-#define CRICKET_O_KEY 123
+#define CRICKET_A_KEY 120 // geared (esp8266)
+#define CRICKET_E_KEY 121 // geared (esp8266)
+#define CRICKET_I_KEY 122 // geared (esp8266)
+#define CRICKET_O_KEY 123 // geared (esp8266) // servo pin is different (D7)
 #define CRICKET_U_KEY 124
 #define CRICKET_W_KEY 125
 #define CRICKET_Y_KEY 126
-#define CRICKET_N_KEY 127
+#define CRICKET_N_KEY 127 // fishing-fly (esp32)
 //============</list of crickets>===========
+
+#define CRICKET_KEY CRICKET_N_KEY // A-E-I-O-U-W-Y-N (up to 8 crickets) - KEY 120 ~ 127
diff --git a/crickets/src/main.cpp b/crickets/src/main.cpp
index 12c303c..6430139 100755
--- a/crickets/src/main.cpp
+++ b/crickets/src/main.cpp
@@ -10,7 +10,7 @@
 //
 
 //
-// 2020 10 17
+// 2020 10 14
 //
 
 //==========<configurations>===========
@@ -43,7 +43,7 @@
 
 //============<this cricket>============
 #include "crickets.h"
-#define CRICKET_KEY CRICKET_A_KEY // A-E-I-O-U-W-Y-N (up to 7 crickets)
+#define CRICKET_KEY CRICKET_N_KEY // A-E-I-O-U-W-Y-N (up to 8 crickets) - KEY 120 ~ 127
 //============</this cricket>===========
 
 //============<parameters>============
@@ -71,6 +71,8 @@
 #define LED_PIN 13
 #elif defined(ARDUINO_NodeMCU_32S) // nodemcu-32s
 #define LED_PIN 2
+#elif defined(ARDUINO_ESP32_DEV) // esp32doit-devkit-v1
+#define LED_PIN 2
 #endif
 #define LED_PERIOD (1111)
 #define LED_ONTIME (1)
@@ -153,9 +155,16 @@ void nothappyalone() {
 Task nothappyalone_task(100, TASK_FOREVER, &nothappyalone); // by default, ENABLED.
 
 // servo
-#define SERVO_PIN D6
-#include <Servo.h>
-static Servo myservo;
+#if defined(ESP8266)
+  #define SERVO_PIN 12 //D6
+  #if (CRICKET_KEY==CRICKET_O_KEY)
+    #undef SERVO_PIN
+    #define SERVO_PIN 13 //D7
+  #endif
+  #include <Servo.h>
+#elif defined(ESP32)
+  #define SERVO_PIN 5
+#endif
 
 // my tasks
 extern Task set_speed_task;
@@ -163,14 +172,22 @@ extern Task rest_task;
 int speed = 0;
 void set_speed() {
   int r = speed;
-  analogWrite(12,r);
+#if defined(ESP32)
+  ledcWrite(0, r);
+#elif defined(ESP8266)
+  analogWrite(SERVO_PIN, r);
+#endif
   Serial.print("set_speed:");
   Serial.println(r);
 }
 Task set_speed_task(0, TASK_ONCE, &set_speed);
 
 void rest() {
-  analogWrite(12,0);
+#if defined(ESP32)
+  ledcWrite(0, 0);
+#elif defined(ESP8266)
+  analogWrite(SERVO_PIN, 0);
+#endif
 }
 Task rest_task(0, TASK_ONCE, &rest);
 
@@ -204,6 +221,9 @@ void receivedCallback(uint32_t from, String & msg) { // REQUIRED
   int gate = str_gate.toInt();
 
   speed = velocity * 4; // 0 ~ 508
+#if defined(ESP32)
+  speed = velocity; // 10 bit (esp8266) ==> 8 bit (esp32-ledc)
+#endif
 
   //is it for me?
   if (key == CRICKET_KEY) {
@@ -250,6 +270,11 @@ void setup() {
   //led
   pinMode(LED_PIN, OUTPUT);
 
+#if defined(ESP32)
+  ledcSetup(0, 1000, 8); // 8bit
+  ledcAttachPin(SERVO_PIN, 0);
+#endif
+
   //mesh
   WiFiMode_t node_type = WIFI_AP_STA;
 #if defined(DISABLE_AP)
diff --git a/gastank/src/main.cpp b/gastank/src/main.cpp
index a2f9de6..d915a9e 100644
--- a/gastank/src/main.cpp
+++ b/gastank/src/main.cpp
@@ -6,12 +6,11 @@
 //
 
 //
-// COSMO40 @ Incheon w/ Factory2
-// RTA @ Seoul w/ Post Territory Ujeongguk
+// Forest all/around @ MMCA, Seoul
 //
 
 //
-// 2019 12 15
+// 2020 10 14
 //
 
 //==========<configurations>===========
diff --git a/osc/src/main.cpp b/osc/src/main.cpp
index 7b2a4f3..83797c2 100644
--- a/osc/src/main.cpp
+++ b/osc/src/main.cpp
@@ -6,8 +6,7 @@
 //
 
 //
-// COSMO40 @ Incheon w/ Factory2
-// RTA @ Seoul w/ Post Territory Ujeongguk
+// Forest all/around @ MMCA, Seoul
 //
 
 //
diff --git a/postman-monitor/src/main.cpp b/postman-monitor/src/main.cpp
index d70c3a5..30f9fd8 100644
--- a/postman-monitor/src/main.cpp
+++ b/postman-monitor/src/main.cpp
@@ -6,8 +6,7 @@
 //
 
 //
-// COSMO40 @ Incheon w/ Factory2
-// RTA @ Seoul w/ Post Territory Ujeongguk
+// Forest all/around @ MMCA, Seoul
 //
 
 //
diff --git a/puredata/piano_access_mesh.pd b/puredata/piano_access_mesh.pd
index 022e958..898c165 100644
--- a/puredata/piano_access_mesh.pd
+++ b/puredata/piano_access_mesh.pd
@@ -66,10 +66,6 @@
 #X restore 156 222 pd midi-in;
 #X obj 941 135 r NOTE;
 #X msg 1010 297 /note/onoff \$1;
-#X obj 418 386 metro 1000;
-#X obj 418 364 tgl 15 0 empty empty empty 17 7 0 10 -262144 -1 -1 0
-1;
-#X text 417 334 auto play;
 #X floatatom 975 272 5 0 0 0 - - -;
 #X obj 1090 119 loadbang;
 #X msg 1090 144 127;
@@ -86,27 +82,6 @@
 #X text 1197 197 BIG;
 #X text 1198 321 SMALL;
 #X msg 1175 146 180;
-#X msg 281 388 100 100 1;
-#X msg 283 443 101 100 1;
-#X text 292 367 gastank;
-#X text 287 418 float;
-#X msg 460 314 0;
-#X msg 502 336 1000;
-#X obj 314 253 metro 1000;
-#X obj 314 231 tgl 15 0 empty empty empty 17 7 0 10 -262144 -1 -1 0
-1;
-#X floatatom 393 238 5 0 0 0 - - -;
-#X text 313 201 auto play;
-#X msg 356 181 0;
-#X msg 398 203 1000;
-#X msg 314 275 101 127 1;
-#X msg 418 408 100 127 1;
-#X msg 497 307 500;
-#X msg 533 305 2000;
-#X msg 521 281 300;
-#X msg 551 261 3000;
-#X msg 538 52 devicename /dev/ttyACM0 \, baud 57600 \, pollintervall
-1 \, verbose 1;
 #X obj 1107 72 s NOTE;
 #X msg 1107 46 68 100 1;
 #X obj 941 163 print NOTE;
@@ -124,27 +99,159 @@
 #X obj 664 163 print CTRL;
 #X obj 664 135 r CTRL;
 #X obj 664 203 r CTRL;
-#X obj 418 432 s CTRL;
-#X obj 314 299 s CTRL;
-#N canvas 569 297 358 255 crickets 1;
-#X msg 31 159 120 \$1 \$2;
-#X obj 31 130 pack f f;
-#X obj 76 104 tgl 15 0 empty empty empty 17 7 0 10 -262144 -1 -1 0
+#N canvas 423 89 853 810 crickets 1;
+#X obj 89 292 pack f f;
+#X obj 134 266 tgl 15 0 empty \$0-c-tgl r:0-c-tgl 17 7 0 10 -262144
+-1 -1 0 1;
+#X obj 92 220 hsl 128 15 50 300 0 0 empty empty empty -2 -8 0 10 -262144
+-1 -1 0 1;
+#X obj 89 353 s CTRL;
+#X floatatom 99 240 5 0 0 0 - - -;
+#X msg 89 321 120 \$1 \$2;
+#X obj 239 292 pack f f;
+#X obj 284 266 tgl 15 0 empty \$0-c-tgl r:0-c-tgl 17 7 0 10 -262144
+-1 -1 0 1;
+#X obj 242 220 hsl 128 15 50 300 0 0 empty empty empty -2 -8 0 10 -262144
+-1 -1 0 1;
+#X obj 239 353 s CTRL;
+#X floatatom 249 240 5 0 0 0 - - -;
+#X msg 239 321 121 \$1 \$2;
+#X obj 371 56 tgl 15 0 empty empty empty 17 7 0 10 -262144 -1 -1 0
 1;
-#X obj 34 58 hsl 128 15 50 300 0 0 empty empty empty -2 -8 0 10 -262144
--1 -1 400 1;
-#X floatatom 31 27 5 0 0 0 - - -;
-#X obj 31 191 s CTRL;
-#X floatatom 31 78 5 0 0 0 - - -;
+#X obj 371 80 t b a;
+#X msg 319 67 0;
+#X obj 389 292 pack f f;
+#X obj 434 266 tgl 15 0 empty \$0-c-tgl r:0-c-tgl 17 7 0 10 -262144
+-1 -1 0 1;
+#X obj 392 220 hsl 128 15 50 300 0 0 empty empty empty -2 -8 0 10 -262144
+-1 -1 2500 1;
+#X obj 389 353 s CTRL;
+#X floatatom 399 240 5 0 0 0 - - -;
+#X msg 389 321 122 \$1 \$2;
+#X obj 539 292 pack f f;
+#X obj 584 266 tgl 15 0 empty \$0-c-tgl r:0-c-tgl 17 7 0 10 -262144
+-1 -1 0 1;
+#X obj 542 220 hsl 128 15 50 300 0 0 empty empty empty -2 -8 0 10 -262144
+-1 -1 900 1;
+#X obj 539 353 s CTRL;
+#X floatatom 549 240 5 0 0 0 - - -;
+#X msg 539 321 123 \$1 \$2;
+#X obj 539 502 pack f f;
+#X obj 584 476 tgl 15 0 empty \$0-c-tgl r:0-c-tgl 17 7 0 10 -262144
+-1 -1 0 1;
+#X obj 542 430 hsl 128 15 0 255 0 0 empty empty empty -2 -8 0 10 -262144
+-1 -1 0 1;
+#X obj 539 563 s CTRL;
+#X floatatom 549 450 5 0 0 0 - - -;
+#X msg 539 531 127 \$1 \$2;
+#X text 605 398 fishing-fly;
+#X obj 689 292 pack f f;
+#X obj 734 266 tgl 15 0 empty \$0-c-tgl r:0-c-tgl 17 7 0 10 -262144
+-1 -1 0 1;
+#X obj 692 220 hsl 128 15 50 300 0 0 empty empty empty -2 -8 0 10 -262144
+-1 -1 0 1;
+#X obj 689 353 s CTRL;
+#X floatatom 699 240 5 0 0 0 - - -;
+#X msg 689 321 105 \$1 \$2;
+#X obj 299 635 metro 1000;
+#X obj 299 613 tgl 15 0 empty empty empty 17 7 0 10 -262144 -1 -1 0
+1;
+#X text 298 583 auto play;
+#X msg 162 637 100 100 1;
+#X msg 164 692 101 100 1;
+#X text 173 616 gastank;
+#X text 168 667 float;
+#X msg 341 563 0;
+#X msg 383 585 1000;
+#X obj 175 492 metro 1000;
+#X obj 175 470 tgl 15 0 empty empty empty 17 7 0 10 -262144 -1 -1 0
+1;
+#X floatatom 254 477 5 0 0 0 - - -;
+#X text 174 440 auto play;
+#X msg 217 420 0;
+#X msg 259 442 1000;
+#X msg 175 514 101 127 1;
+#X msg 299 657 100 127 1;
+#X msg 378 556 500;
+#X msg 414 554 2000;
+#X msg 402 530 300;
+#X msg 432 510 3000;
+#X obj 299 681 s CTRL;
+#X obj 175 538 s CTRL;
+#X text 150 58 cricket drummers;
+#X obj 408 109 tgl 15 0 \$0-c-tgl empty s:0-c-tgl 17 7 0 10 -262144
+-1 -1 0 1;
+#X floatatom 539 189 5 0 0 0 r:0-c-sld #0-c-sld -;
+#X floatatom 389 189 5 0 0 0 r:0-c-sld #0-c-sld -;
+#X floatatom 239 189 5 0 0 0 r:0-c-sld #0-c-sld -;
+#X floatatom 89 189 5 0 0 0 r:0-c-sld #0-c-sld -;
+#X floatatom 689 189 5 0 0 0 r:0-c-sld #0-c-sld -;
+#X floatatom 371 109 5 0 0 0 s:0-c-sld - #0-c-sld;
+#X floatatom 539 399 5 0 0 0 r:0-c-sld #0-c-sld -;
 #X connect 0 0 5 0;
-#X connect 1 0 0 0;
-#X connect 2 0 1 1;
-#X connect 3 0 1 0;
-#X connect 3 0 6 0;
-#X connect 4 0 3 0;
+#X connect 1 0 0 1;
+#X connect 2 0 0 0;
+#X connect 2 0 4 0;
+#X connect 5 0 3 0;
+#X connect 6 0 11 0;
+#X connect 7 0 6 1;
+#X connect 8 0 6 0;
+#X connect 8 0 10 0;
+#X connect 11 0 9 0;
+#X connect 12 0 13 0;
+#X connect 13 0 70 0;
+#X connect 13 1 64 0;
+#X connect 14 0 12 0;
+#X connect 15 0 20 0;
+#X connect 16 0 15 1;
+#X connect 17 0 15 0;
+#X connect 17 0 19 0;
+#X connect 20 0 18 0;
+#X connect 21 0 26 0;
+#X connect 22 0 21 1;
+#X connect 23 0 21 0;
+#X connect 23 0 25 0;
+#X connect 26 0 24 0;
+#X connect 27 0 32 0;
+#X connect 28 0 27 1;
+#X connect 29 0 27 0;
+#X connect 29 0 31 0;
+#X connect 32 0 30 0;
+#X connect 34 0 39 0;
+#X connect 35 0 34 1;
+#X connect 36 0 34 0;
+#X connect 36 0 38 0;
+#X connect 39 0 37 0;
+#X connect 40 0 56 0;
+#X connect 41 0 40 0;
+#X connect 43 0 61 0;
+#X connect 44 0 61 0;
+#X connect 47 0 40 0;
+#X connect 48 0 40 1;
+#X connect 49 0 55 0;
+#X connect 50 0 49 0;
+#X connect 51 0 49 1;
+#X connect 53 0 49 0;
+#X connect 54 0 49 1;
+#X connect 55 0 62 0;
+#X connect 56 0 61 0;
+#X connect 57 0 40 1;
+#X connect 58 0 40 1;
+#X connect 59 0 40 1;
+#X connect 60 0 40 1;
+#X connect 65 0 23 0;
+#X connect 66 0 17 0;
+#X connect 67 0 8 0;
+#X connect 68 0 2 0;
+#X connect 69 0 36 0;
+#X connect 71 0 29 0;
 #X restore 651 467 pd crickets ctrl;
 #X obj 382 106 print OSC;
 #X obj 698 295 int;
+#X msg 538 52 devicename /dev/portD \, baud 57600 \, pollintervall
+1 \, verbose 1;
+#X obj 1167 72 s NOTE;
+#X msg 1167 46 62 100 1;
 #X connect 0 0 3 0;
 #X connect 2 0 7 1;
 #X connect 3 0 12 0;
@@ -172,59 +279,43 @@
 #X connect 27 1 32 0;
 #X connect 28 0 29 0;
 #X connect 29 0 27 0;
-#X connect 29 1 46 0;
+#X connect 29 1 43 0;
 #X connect 29 2 23 0;
 #X connect 31 0 33 0;
 #X connect 32 0 33 0;
 #X connect 34 0 25 0;
-#X connect 34 0 96 0;
+#X connect 34 0 72 0;
 #X connect 36 0 35 0;
-#X connect 37 0 78 0;
+#X connect 37 0 56 0;
 #X connect 38 0 33 0;
-#X connect 39 0 70 0;
-#X connect 40 0 39 0;
-#X connect 42 0 31 0;
-#X connect 43 0 44 0;
-#X connect 44 0 42 0;
-#X connect 46 0 42 0;
-#X connect 47 0 42 0;
-#X connect 48 0 42 0;
-#X connect 49 0 42 0;
-#X connect 50 0 42 0;
-#X connect 51 0 42 0;
-#X connect 52 0 42 0;
-#X connect 53 0 42 0;
-#X connect 56 0 42 0;
-#X connect 57 0 93 0;
-#X connect 58 0 93 0;
-#X connect 61 0 39 0;
-#X connect 62 0 39 1;
-#X connect 63 0 69 0;
-#X connect 64 0 63 0;
-#X connect 65 0 63 1;
-#X connect 67 0 63 0;
-#X connect 68 0 63 1;
-#X connect 69 0 94 0;
-#X connect 70 0 93 0;
-#X connect 71 0 39 1;
-#X connect 72 0 39 1;
-#X connect 73 0 39 1;
-#X connect 74 0 39 1;
-#X connect 75 0 14 1;
-#X connect 77 0 76 0;
-#X connect 79 0 88 0;
-#X connect 79 1 80 0;
-#X connect 80 0 87 0;
-#X connect 81 0 87 0;
-#X connect 82 0 81 0;
-#X connect 82 1 86 0;
-#X connect 83 0 82 0;
-#X connect 83 1 89 0;
-#X connect 83 2 79 0;
-#X connect 85 0 87 0;
-#X connect 86 0 87 0;
-#X connect 88 0 87 0;
-#X connect 89 0 97 0;
-#X connect 91 0 90 0;
-#X connect 92 0 83 0;
-#X connect 97 0 85 0;
+#X connect 39 0 31 0;
+#X connect 40 0 41 0;
+#X connect 41 0 39 0;
+#X connect 43 0 39 0;
+#X connect 44 0 39 0;
+#X connect 45 0 39 0;
+#X connect 46 0 39 0;
+#X connect 47 0 39 0;
+#X connect 48 0 39 0;
+#X connect 49 0 39 0;
+#X connect 50 0 39 0;
+#X connect 53 0 39 0;
+#X connect 55 0 54 0;
+#X connect 57 0 66 0;
+#X connect 57 1 58 0;
+#X connect 58 0 65 0;
+#X connect 59 0 65 0;
+#X connect 60 0 59 0;
+#X connect 60 1 64 0;
+#X connect 61 0 60 0;
+#X connect 61 1 67 0;
+#X connect 61 2 57 0;
+#X connect 63 0 65 0;
+#X connect 64 0 65 0;
+#X connect 66 0 65 0;
+#X connect 67 0 73 0;
+#X connect 69 0 68 0;
+#X connect 70 0 61 0;
+#X connect 73 0 63 0;
+#X connect 74 0 14 1;
+#X connect 76 0 75 0;
diff --git a/sampler/src/main.cpp b/sampler/src/main.cpp
index 7f0dc1a..8114991 100644
--- a/sampler/src/main.cpp
+++ b/sampler/src/main.cpp
@@ -6,8 +6,7 @@
 //
 
 //
-// COSMO40 @ Incheon w/ Factory2
-// RTA @ Seoul w/ Post Territory Ujeongguk
+// Forest all/around @ MMCA, Seoul
 //
 
 //
@@ -16,6 +15,11 @@
 // (part-3) teensy35 : 'client:sampler' (mesh post --> play sounds)
 //
 
+//============<sampler>============
+//optionally pin3 will go HIGH/LOW in sync w/ sound PLAY/STOP
+#define MOTOR_PIN 3
+//============</sampler>===========
+
 //HACK: let auto-poweroff speakers stay turned ON! - (creative muvo mini)
 #define IDLE_FREQ 22000
 #define IDLE_AMP 0 // --> creative muvo 2 doesn't need this. they just stay on!
@@ -81,6 +85,8 @@ void sample_player_start()
   // if (playSdWav1.isPlaying() == false) {
   playSdWav1.play(filename);
   // }
+  //fan action
+  digitalWrite(MOTOR_PIN, HIGH);
   //mark the indicator : HIGH: ON
   digitalWrite(13, HIGH);
   //to wait a bit for updating isPlaying()
@@ -108,6 +114,8 @@ void sample_player_stop() {
   //stop the player.
   if (playSdWav1.isPlaying() == true) {
     playSdWav1.stop();
+    //fan stop
+    digitalWrite(MOTOR_PIN, LOW);
   }
 }
 void sample_player_check() {
@@ -230,6 +238,10 @@ void setup() {
   // while (!Serial) {}
   //  --> use this.. to capture start-up messages, properly. very handy.
 
+  //motor
+  pinMode(MOTOR_PIN, OUTPUT);
+  digitalWrite(MOTOR_PIN, LOW);
+
   //i2c
   Wire.begin(I2C_ADDR);
   Wire.onReceive(receiveEvent);
diff --git a/src/main.cpp b/src/main.cpp
index 9ca9b69..22a15d6 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -6,8 +6,7 @@
 //
 
 //
-// COSMO40 @ Incheon w/ Factory2
-// RTA @ Seoul w/ Post Territory Ujeongguk
+// Forest all/around @ MMCA, Seoul
 //
 
 //