diff --git a/platformio.ini b/platformio.ini
index 1f8e746..20617ec 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -37,14 +37,14 @@ lib_deps =
 [env:nodemcuv2]
 platform = espressif8266
 board = nodemcuv2
-lib_deps =
+lib_deps +=
   ESP8266WiFi
   Servo(esp8266)
 
 [env:huzzah]
 platform = espressif8266
 board = huzzah
-lib_deps =
+lib_deps +=
   ESP8266WiFi
   Servo(esp8266)
 
@@ -53,5 +53,13 @@ build_unflags = -std=gnu++11
 build_flags = -std=gnu++14 ; AsyncTCP wants this.
 platform = espressif32
 board = featheresp32
-lib_deps =
+lib_deps +=
+  1826@1.0.3 ; AsyncTCP
+
+[env:nodemcu-32s]
+build_unflags = -std=gnu++11
+build_flags = -std=gnu++14 ; AsyncTCP wants this.
+platform = espressif32
+board = nodemcu-32s
+lib_deps +=
   1826@1.0.3 ; AsyncTCP
diff --git a/postman-monitor/platformio.ini b/postman-monitor/platformio.ini
index 384431b..e347afa 100644
--- a/postman-monitor/platformio.ini
+++ b/postman-monitor/platformio.ini
@@ -11,7 +11,7 @@
 [platformio]
 env_default = featheresp32
 
-[common]
+[env]
 framework = arduino
 lib_deps =
   SPI
@@ -24,12 +24,10 @@ build_unflags = -std=gnu++11
 build_flags = -std=gnu++14 ; AsyncTCP wants this.
 platform = espressif32
 board = featheresp32
-framework = ${common.framework}
 upload_speed = 921600
 upload_port = /dev/ttyUSB0
 lib_deps =
   1826@1.0.3 ; AsyncTCP
-  ${common.lib_deps}
   13 ; Adafruit GFX Library
   22 ; Adafruit HX8357 Library
   377 ; Adafruit STMPE610
diff --git a/postman-monitor/src/main.cpp b/postman-monitor/src/main.cpp
index 2cd0700..d4f1872 100644
--- a/postman-monitor/src/main.cpp
+++ b/postman-monitor/src/main.cpp
@@ -54,6 +54,7 @@ void register_nodes(){
   registered[0xC21474D2] = NTYPE_POSTMAN;
   registered[0xABB3B4B8] = NTYPE_POSTMAN;
   registered[0x2D370A07] = NTYPE_POSTMAN;
+  registered[0xBFFBDD7D] = NTYPE_POSTMAN;
 }
 //============</registered-nodelist>===========
 
diff --git a/src/main.cpp b/src/main.cpp
index 190ede3..f2ab893 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -105,6 +105,8 @@
 #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)
@@ -272,7 +274,11 @@ void receivedCallback(uint32_t from, String & msg) { // REQUIRED
   msg = msg.substring(0, POST_LENGTH); // (0) ~ (POST_LENGTH-1)
   // send whatever letter we postmans trust other postman.
   Wire.beginTransmission(I2C_ADDR);
+#if defined(ARDUINO_NodeMCU_32S)
+  Wire.write((const uint8_t*)msg.c_str(), POST_LENGTH);
+#else
   Wire.write(msg.c_str(), POST_LENGTH);
+#endif
   Wire.endTransmission();
 }
 void changedConnectionCallback() {