diff --git a/tools/esp8266/README.md b/tools/esp8266/README.md
index 23e63832..b6b300e6 100644
--- a/tools/esp8266/README.md
+++ b/tools/esp8266/README.md
@@ -74,6 +74,7 @@ For now the following inverters should work out of the box:
 
 (*) EEPROM changes require settings to be changed, your settings will be overwritten and need to be set again!
 
+- v0.4.25 added default SERIAL/MQTT/SEND_INTERVAL #100, fixed env:node_mcu_v2 build #101
 - v0.4.24 added fixes for #63, #88, #93. revert #36 (*) EEPROM changes
 - v0.4.23 added workflow, fix index.html to load inverter info immediately, changed timestamp to 1 for stand alone ESP #90, Implement MQTT discovery for Home Assistant
 - v0.4.22 compiles with PlatformIO
diff --git a/tools/esp8266/app.cpp b/tools/esp8266/app.cpp
index 0af62993..38b75e6e 100644
--- a/tools/esp8266/app.cpp
+++ b/tools/esp8266/app.cpp
@@ -15,11 +15,11 @@
 app::app() : Main() {
     DPRINTLN(DBG_VERBOSE, F("app::app():Main"));
     mSendTicker     = 0xffff;
-    mSendInterval   = MIN_SEND_INTERVAL;
+    mSendInterval   = SEND_INTERVAL;
     mMqttTicker     = 0xffff;
-    mMqttInterval   = MIN_MQTT_INTERVAL;
+    mMqttInterval   = MQTT_INTERVAL;
     mSerialTicker   = 0xffff;
-    mSerialInterval = MIN_SERIAL_INTERVAL;
+    mSerialInterval = SERIAL_INTERVAL;
     mMqttActive     = false;
 
     mTicker = 0;
diff --git a/tools/esp8266/config.h b/tools/esp8266/config.h
index 3a250b49..9851caef 100644
--- a/tools/esp8266/config.h
+++ b/tools/esp8266/config.h
@@ -37,14 +37,14 @@
 // number of configurable inverters
 #define MAX_NUM_INVERTERS       3
 
-// minimum serial interval
-#define MIN_SERIAL_INTERVAL     5
+// default serial interval
+#define SERIAL_INTERVAL     5
 
-// minimum send interval
-#define MIN_SEND_INTERVAL       30
+// default send interval
+#define SEND_INTERVAL       30
 
-// minimum mqtt interval
-#define MIN_MQTT_INTERVAL       60
+// default mqtt interval
+#define MQTT_INTERVAL       60
 
 // maximum human readable inverter name length
 #define MAX_NAME_LENGTH         16
diff --git a/tools/esp8266/defines.h b/tools/esp8266/defines.h
index dd763ebf..c746930c 100644
--- a/tools/esp8266/defines.h
+++ b/tools/esp8266/defines.h
@@ -21,7 +21,7 @@
 //-------------------------------------
 #define VERSION_MAJOR       0
 #define VERSION_MINOR       4
-#define VERSION_PATCH       24
+#define VERSION_PATCH       25
 
 
 //-------------------------------------
@@ -30,6 +30,14 @@ typedef struct {
     uint8_t packet[MAX_RF_PAYLOAD_SIZE];
 } packet_t;
 
+// minimum serial interval
+#define MIN_SERIAL_INTERVAL     5
+
+// minimum send interval
+#define MIN_SEND_INTERVAL       15
+
+// minimum mqtt interval
+#define MIN_MQTT_INTERVAL       60
 
 //-------------------------------------
 // EEPROM
diff --git a/tools/esp8266/platformio.ini b/tools/esp8266/platformio.ini
index eb31d2e6..0728ec47 100644
--- a/tools/esp8266/platformio.ini
+++ b/tools/esp8266/platformio.ini
@@ -9,6 +9,19 @@ monitor_speed = 115200
 board_build.f_cpu = 80000000L
 ;build_flags = -DDEBUG_ESP_PORT=Serial
 
+lib_deps =
+  nrf24/RF24@1.4.2
+	paulstoffregen/Time@^1.6.1
+	knolleary/PubSubClient@^2.8
+  bblanchon/ArduinoJson@^6.19.4
+  ;esp8266/DNSServer@1.1.0
+  ;esp8266/EEPROM@^1.0
+  ;esp8266/ESP8266HTTPUpdateServer@^1.0
+  ;esp8266/ESP8266WebServer@^1.0
+  ;esp8266/ESP8266WiFi@^1.0
+  ;esp8266/SPI@1.0
+  ;esp8266/Ticker@^1.0
+
 [env:node_mcu_v2]
 platform = espressif8266
 framework = arduino
@@ -17,9 +30,8 @@ monitor_speed = 115200
 board_build.f_cpu = 80000000L
 upload_port = /dev/ttyUSB0
 
-
 lib_deps =
   nrf24/RF24@1.4.2
-  PubSubClient
-  Time
-  ArduinoJson
+	paulstoffregen/Time@^1.6.1
+	knolleary/PubSubClient@^2.8
+  bblanchon/ArduinoJson@^6.19.4