diff --git a/examples/companion_radio/ui-new/UITask.cpp b/examples/companion_radio/ui-new/UITask.cpp
index 16751d20..59a1b2de 100644
--- a/examples/companion_radio/ui-new/UITask.cpp
+++ b/examples/companion_radio/ui-new/UITask.cpp
@@ -260,13 +260,24 @@ public:
 #if ENV_INCLUDE_GPS == 1
     } else if (_page == HomePage::GPS) {
       LocationProvider* nmea = sensors.getLocationProvider();
+      char buf[50];
       int y = 18;
-      display.drawTextLeftAlign(0, y, _task->getGPSState() ? "gps on" : "gps off");
+      bool gps_state = _task->getGPSState();
+#ifdef PIN_GPS_SWITCH
+      bool hw_gps_state = digitalRead(PIN_GPS_SWITCH);
+      if (gps_state != hw_gps_state) {
+        strcpy(buf, gps_state ? "gps off(hw)" : "gps off(sw)");
+      } else {
+        strcpy(buf, gps_state ? "gps on" : "gps off");
+      }
+#else
+      strcpy(buf, gps_state ? "gps on" : "gps off");
+#endif
+      display.drawTextLeftAlign(0, y, buf);
       if (nmea == NULL) {
         y = y + 12;
         display.drawTextLeftAlign(0, y, "Can't access GPS");
       } else {
-        char buf[50];
         strcpy(buf, nmea->isValid()?"fix":"no fix");
         display.drawTextRightAlign(display.width()-1, y, buf);
         y = y + 12;
@@ -716,10 +727,14 @@ void UITask::loop() {
     _analogue_pin_read_millis = millis();
   }
 #endif
-#if defined(DISP_BACKLIGHT) && defined(BACKLIGHT_BTN)
+#if defined(BACKLIGHT_BTN)
   if (millis() > next_backlight_btn_check) {
     bool touch_state = digitalRead(PIN_BUTTON2);
+#if defined(DISP_BACKLIGHT)
     digitalWrite(DISP_BACKLIGHT, !touch_state);
+#elif defined(EXP_PIN_BACKLIGHT)
+    expander.digitalWrite(EXP_PIN_BACKLIGHT, !touch_state);
+#endif
     next_backlight_btn_check = millis() + 300;
   }
 #endif
diff --git a/src/helpers/sensors/EnvironmentSensorManager.cpp b/src/helpers/sensors/EnvironmentSensorManager.cpp
index 79dc87e5..bb675c27 100644
--- a/src/helpers/sensors/EnvironmentSensorManager.cpp
+++ b/src/helpers/sensors/EnvironmentSensorManager.cpp
@@ -548,7 +548,11 @@ void EnvironmentSensorManager::initBasicGPS() {
   delay(1000);
 
   // We'll consider GPS detected if we see any data on Serial1
+#ifdef ENV_SKIP_GPS_DETECT
+  gps_detected = true;
+#else
   gps_detected = (Serial1.available() > 0);
+#endif
 
   if (gps_detected) {
     MESH_DEBUG_PRINTLN("GPS detected");
diff --git a/src/helpers/ui/GxEPDDisplay.cpp b/src/helpers/ui/GxEPDDisplay.cpp
index 34e31e30..ad47754b 100644
--- a/src/helpers/ui/GxEPDDisplay.cpp
+++ b/src/helpers/ui/GxEPDDisplay.cpp
@@ -1,13 +1,26 @@
 
 #include "GxEPDDisplay.h"
 
+#ifdef EXP_PIN_BACKLIGHT
+  #include <PCA9557.h>
+  extern PCA9557 expander;
+#endif
+
 #ifndef DISPLAY_ROTATION
   #define DISPLAY_ROTATION 3
 #endif
 
+#ifdef ESP32
+  SPIClass SPI1 = SPIClass(FSPI);
+#endif
+
 bool GxEPDDisplay::begin() {
   display.epd2.selectSPI(SPI1, SPISettings(4000000, MSBFIRST, SPI_MODE0));
+#ifdef ESP32
+  SPI1.begin(PIN_DISPLAY_SCLK, PIN_DISPLAY_MISO, PIN_DISPLAY_MOSI, PIN_DISPLAY_CS);
+#else
   SPI1.begin();
+#endif
   display.init(115200, true, 2, false);
   display.setRotation(DISPLAY_ROTATION);
   setTextSize(1);  // Default to size 1
@@ -27,6 +40,8 @@ void GxEPDDisplay::turnOn() {
   if (!_init) begin();
 #if defined(DISP_BACKLIGHT) && !defined(BACKLIGHT_BTN)
   digitalWrite(DISP_BACKLIGHT, HIGH);
+#elif defined(EXP_PIN_BACKLIGHT) && !defined(BACKLIGHT_BTN)
+  expander.digitalWrite(EXP_PIN_BACKLIGHT, HIGH);
 #endif
   _isOn = true;
 }
@@ -34,6 +49,8 @@ void GxEPDDisplay::turnOn() {
 void GxEPDDisplay::turnOff() {
 #if defined(DISP_BACKLIGHT) && !defined(BACKLIGHT_BTN)
   digitalWrite(DISP_BACKLIGHT, LOW);
+#elif defined(EXP_PIN_BACKLIGHT) && !defined(BACKLIGHT_BTN)
+  expander.digitalWrite(EXP_PIN_BACKLIGHT, LOW);
 #endif
   _isOn = false;
 }
diff --git a/variants/thinknode_m5/ThinknodeM5Board.cpp b/variants/thinknode_m5/ThinknodeM5Board.cpp
new file mode 100644
index 00000000..5adc8c00
--- /dev/null
+++ b/variants/thinknode_m5/ThinknodeM5Board.cpp
@@ -0,0 +1,47 @@
+#include "ThinknodeM5Board.h"
+
+PCA9557 expander (0x18, &Wire1);
+
+void ThinknodeM5Board::begin() {
+    // Start expander and configure pins
+    Wire1.begin(48, 47);
+    expander.pinMode(EXP_PIN_POWER, OUTPUT); // eink
+    expander.pinMode(EXP_PIN_BACKLIGHT, OUTPUT); // peripherals
+    expander.pinMode(EXP_PIN_LED, OUTPUT); // peripherals
+    expander.digitalWrite(EXP_PIN_POWER, HIGH);
+    expander.digitalWrite(EXP_PIN_BACKLIGHT, LOW);
+    expander.digitalWrite(EXP_PIN_LED, LOW);
+
+#ifdef PIN_GPS_SWITCH
+    pinMode(PIN_GPS_SWITCH, INPUT);
+#endif
+
+    ESP32Board::begin();
+  }
+
+  void ThinknodeM5Board::enterDeepSleep(uint32_t secs, int pin_wake_btn) {
+    esp_deep_sleep_start();
+  }
+
+  void ThinknodeM5Board::powerOff()  {
+    enterDeepSleep(0);
+  }
+
+ uint16_t ThinknodeM5Board::getBattMilliVolts() {
+    analogReadResolution(12);
+    analogSetPinAttenuation(PIN_VBAT_READ, ADC_11db);
+
+    uint32_t mv = 0;
+      for (int i = 0; i < 8; ++i) {
+        mv += analogReadMilliVolts(PIN_VBAT_READ);
+        delayMicroseconds(200);
+      }
+    mv /= 8;
+
+    analogReadResolution(10);  
+    return static_cast<uint16_t>(mv * ADC_MULTIPLIER );
+}
+
+  const char* ThinknodeM5Board::getManufacturerName() const {
+    return "Elecrow ThinkNode M2";
+  }
diff --git a/variants/thinknode_m5/ThinknodeM5Board.h b/variants/thinknode_m5/ThinknodeM5Board.h
new file mode 100644
index 00000000..3c120027
--- /dev/null
+++ b/variants/thinknode_m5/ThinknodeM5Board.h
@@ -0,0 +1,27 @@
+#pragma once
+
+#include <Arduino.h>
+#include <helpers/RefCountedDigitalPin.h>
+#include <helpers/ESP32Board.h>
+#include <driver/rtc_io.h>
+#include <PCA9557.h>
+
+extern PCA9557 expander;
+
+class ThinknodeM5Board : public ESP32Board {
+
+public:
+
+  void begin();
+  void enterDeepSleep(uint32_t secs, int pin_wake_btn = -1);
+  void powerOff() override;
+  uint16_t getBattMilliVolts() override;
+  const char* getManufacturerName() const override ;
+
+  void onBeforeTransmit() override {
+    expander.digitalWrite(EXP_PIN_LED, HIGH);   // turn TX LED on
+  }
+  void onAfterTransmit() override {
+    expander.digitalWrite(EXP_PIN_LED, LOW);   // turn TX LED off
+  }
+};
\ No newline at end of file
diff --git a/variants/thinknode_m5/pins_arduino.h b/variants/thinknode_m5/pins_arduino.h
new file mode 100644
index 00000000..408ed236
--- /dev/null
+++ b/variants/thinknode_m5/pins_arduino.h
@@ -0,0 +1,28 @@
+// Need this file for ESP32-S3
+// No need to modify this file, changes to pins imported from variant.h
+// Most is similar to https://github.com/espressif/arduino-esp32/blob/master/variants/esp32s3/pins_arduino.h
+
+#ifndef Pins_Arduino_h
+#define Pins_Arduino_h
+
+#include <stdint.h>
+#include <variant.h>
+
+#define USB_VID 0x303a
+#define USB_PID 0x1001
+
+// Serial
+static const uint8_t TX = PIN_GPS_TX;
+static const uint8_t RX = PIN_GPS_RX;
+
+// Default SPI will be mapped to Radio
+static const uint8_t SS = P_LORA_NSS;
+static const uint8_t SCK = P_LORA_SCLK;
+static const uint8_t MOSI = P_LORA_MISO;
+static const uint8_t MISO = P_LORA_MOSI;
+
+// The default Wire will be mapped to PMU and RTC
+static const uint8_t SCL = PIN_BOARD_SCL;
+static const uint8_t SDA = PIN_BOARD_SDA;
+
+#endif /* Pins_Arduino_h */
\ No newline at end of file
diff --git a/variants/thinknode_m5/platformio.ini b/variants/thinknode_m5/platformio.ini
new file mode 100644
index 00000000..23db506a
--- /dev/null
+++ b/variants/thinknode_m5/platformio.ini
@@ -0,0 +1,224 @@
+[ThinkNode_M5]
+extends = esp32_base
+board = ESP32-S3-WROOM-1-N4
+build_flags = ${esp32_base.build_flags}
+  -I variants/thinknode_m5
+  -I src/helpres/sensors
+  -D THINKNODE_M5
+  -D PIN_BUZZER=9
+  -D PIN_BOARD_SCL=1
+  -D PIN_BOARD_SDA=2
+  -D P_LORA_EN=46
+  -D P_LORA_DIO_1=4
+  -D P_LORA_NSS=17
+  -D P_LORA_RESET=6  ; RADIOLIB_NC
+  -D P_LORA_BUSY=5   ;  DIO2 = 38
+  -D P_LORA_SCLK=16
+  -D P_LORA_MISO=7
+  -D P_LORA_MOSI=15
+  -D PIN_USER_BTN=21
+  -D PIN_BUTTON2=14
+  -D EXP_PIN_LED=1   ; led is on bus expander
+  -D DISPLAY_ROTATION=4
+  -D DISPLAY_CLASS=GxEPDDisplay
+  -D EINK_DISPLAY_MODEL=GxEPD2_154_D67
+  -D EINK_SCALE_X=1.5625f
+  -D EINK_SCALE_Y=1.5625f
+  -D EINK_X_OFFSET=0
+  -D EINK_Y_OFFSET=10
+  -D BACKLIGHT_BTN=PIN_BUTTON2
+  -D AUTO_OFF_MILLIS=0
+  -D DISABLE_DIAGNOSTIC_OUTPUT
+  -D SX126X_DIO2_AS_RF_SWITCH=true
+  -D SX126X_DIO3_TCXO_VOLTAGE=3.3
+  -D SX126X_CURRENT_LIMIT=140
+  -D RADIO_CLASS=CustomSX1262
+  -D WRAPPER_CLASS=CustomSX1262Wrapper
+  -D LORA_TX_POWER=22
+  -D SX126X_RX_BOOSTED_GAIN=1
+  -D MESH_DEBUG=1
+  -D ENV_INCLUDE_GPS=1
+  -D PERSISTANT_GPS=1
+  -D ENV_SKIP_GPS_DETECT=1
+build_src_filter = ${esp32_base.build_src_filter}
+  +<helpers/sensors/EnvironmentSensorManager.cpp>
+  +<helpers/ui/MomentaryButton.cpp>
+  +<helpers/ui/GxEPDDisplay.cpp>
+  +<helpers/ui/buzzer.cpp>
+  +<../variants/thinknode_m5>
+lib_deps = ${esp32_base.lib_deps}
+  zinggjm/GxEPD2 @ 1.6.2
+  bakercp/CRC32 @ ^2.0.0
+  maxpromer/PCA9557-arduino
+  stevemarple/MicroNMEA @ ^2.0.6
+
+[env:ThinkNode_M5_Repeater]
+extends = ThinkNode_M5
+build_src_filter = ${ThinkNode_M5.build_src_filter}
+  +<../examples/simple_repeater/*.cpp>
+build_flags =
+  ${ThinkNode_M5.build_flags}
+  -D ADVERT_NAME='"Thinknode M2 Repeater"'
+  -D ADVERT_LAT=0.0
+  -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D MAX_NEIGHBOURS=8
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+lib_deps =
+  ${ThinkNode_M5.lib_deps}
+  ${esp32_ota.lib_deps}
+
+; [env:ThinkNode_M5_Repeater_bridge_rs232]
+; extends = ThinkNode_M5
+; build_src_filter = ${ThinkNode_M5.build_src_filter}
+;   +<helpers/bridges/RS232Bridge.cpp>
+;   +<../examples/simple_repeater/*.cpp>
+; build_flags =
+;   ${ThinkNode_M5.build_flags}
+;   -D ADVERT_NAME='"RS232 Bridge"'
+;   -D ADVERT_LAT=0.0
+;   -D ADVERT_LON=0.0
+;   -D ADMIN_PASSWORD='"password"'
+;   -D MAX_NEIGHBOURS=8
+;   -D WITH_RS232_BRIDGE=Serial2
+;   -D WITH_RS232_BRIDGE_RX=5
+;   -D WITH_RS232_BRIDGE_TX=6
+; ;  -D MESH_PACKET_LOGGING=1
+; ;  -D MESH_DEBUG=1
+; lib_deps =
+;   ${ThinkNode_M5.lib_deps}
+;   ${esp32_ota.lib_deps}
+
+[env:ThinkNode_M5_Repeater_bridge_espnow]
+extends = ThinkNode_M5
+build_src_filter = ${ThinkNode_M5.build_src_filter}
+  +<helpers/bridges/ESPNowBridge.cpp>
+  +<../examples/simple_repeater/*.cpp>
+build_flags =
+  ${ThinkNode_M5.build_flags}
+  -D ADVERT_NAME='"ESPNow Bridge"'
+  -D ADVERT_LAT=0.0
+  -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D MAX_NEIGHBOURS=8
+  -D WITH_ESPNOW_BRIDGE=1
+  -D WITH_ESPNOW_BRIDGE_SECRET='"shared-secret"'
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+lib_deps =
+  ${ThinkNode_M5.lib_deps}
+  ${esp32_ota.lib_deps}
+
+[env:ThinkNode_M5_room_server]
+extends = ThinkNonde_M5
+build_src_filter = ${ThinkNode_M5.build_src_filter}
+  +<../examples/simple_room_server>
+build_flags =
+  ${ThinkNode_M5.build_flags}
+  -D ADVERT_NAME='"Thinknode M2 Room Server"'
+  -D ADVERT_LAT=0.0
+  -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D ROOM_PASSWORD='"hello"'
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+lib_deps =
+  ${ThinkNode_M5.lib_deps}
+  ${esp32_ota.lib_deps}
+
+[env:ThinkNode_M5_terminal_chat]
+extends = ThinkNode_M5
+build_flags =
+  ${ThinkNode_M5.build_flags}
+  -D MAX_CONTACTS=350
+  -D MAX_GROUP_CHANNELS=40
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+build_src_filter = ${ThinkNode_M5.build_src_filter}
+  +<../examples/simple_secure_chat/main.cpp>
+lib_deps =
+  ${ThinkNode_M5.lib_deps}
+  densaugeo/base64 @ ~1.4.0
+
+[env:ThinkNode_M5_companion_radio_ble]
+extends = ThinkNode_M5
+build_flags =
+  ${ThinkNode_M5.build_flags}
+  -I examples/companion_radio/ui-new
+  -D MAX_CONTACTS=350
+  -D MAX_GROUP_CHANNELS=40
+  -D BLE_PIN_CODE=123456
+  -D OFFLINE_QUEUE_SIZE=256
+  -D UI_RECENT_LIST_SIZE=9
+;  -D BLE_DEBUG_LOGGING=1
+;  -D MESH_PACKET_LOGGING=1
+;  -D GPS_NMEA_DEBUG
+build_src_filter = ${ThinkNode_M5.build_src_filter}
+  +<helpers/esp32/*.cpp>
+  +<helpers/ui/MomentaryButton.cpp>
+  +<../examples/companion_radio/*.cpp>
+  +<../examples/companion_radio/ui-new/*.cpp>
+lib_deps =
+  ${ThinkNode_M5.lib_deps}
+  densaugeo/base64 @ ~1.4.0
+  end2endzone/NonBlockingRTTTL@^1.3.0
+
+[env:ThinkNode_M5_companion_radio_usb]
+extends = ThinkNode_M5
+build_flags =
+  ${ThinkNode_M5.build_flags}
+  -I examples/companion_radio/ui-new
+  -D MAX_CONTACTS=350
+  -D MAX_GROUP_CHANNELS=40
+  -D OFFLINE_QUEUE_SIZE=256
+build_src_filter = ${ThinkNode_M5.build_src_filter}
+  +<helpers/esp32/*.cpp>
+  +<helpers/ui/MomentaryButton.cpp>
+  +<../examples/companion_radio/*.cpp>
+  +<../examples/companion_radio/ui-new/*.cpp>
+lib_deps =
+  ${ThinkNode_M5.lib_deps}
+  densaugeo/base64 @ ~1.4.0
+  end2endzone/NonBlockingRTTTL@^1.3.0
+
+[env:ThinkNode_M5_companion_radio_wifi]
+extends = ThinkNode_M5
+build_flags =
+  ${ThinkNode_M5.build_flags}
+  -I examples/companion_radio/ui-new
+  -D MAX_CONTACTS=350
+  -D MAX_GROUP_CHANNELS=40
+  -D OFFLINE_QUEUE_SIZE=256
+  -D WIFI_DEBUG_LOGGING=1
+  -D WIFI_SSID='"Livebox-633C"'
+  -D WIFI_PWD='"vvQUHGSxsWd7fKMYSr"'
+build_src_filter = ${ThinkNode_M5.build_src_filter}
+  +<helpers/esp32/*.cpp>
+  +<helpers/ui/MomentaryButton.cpp>
+  +<../examples/companion_radio/*.cpp>
+  +<../examples/companion_radio/ui-new/*.cpp>
+lib_deps =
+  ${ThinkNode_M5.lib_deps}
+  densaugeo/base64 @ ~1.4.0
+  end2endzone/NonBlockingRTTTL@^1.3.0
+
+[env:ThinkNode_M5_companion_radio_serial]
+extends = ThinkNode_M5
+build_flags =
+  ${ThinkNode_M5.build_flags}
+  -I examples/companion_radio/ui-new
+  -D MAX_CONTACTS=350
+  -D MAX_GROUP_CHANNELS=40
+  -D SERIAL_TX=D6
+  -D SERIAL_RX=D7
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+build_src_filter = ${ThinkNode_M5.build_src_filter}
+  +<helpers/esp32/*.cpp>
+  +<helpers/ui/MomentaryButton.cpp>
+  +<../examples/companion_radio/*.cpp>
+  +<../examples/companion_radio/ui-new/*.cpp>
+lib_deps =
+  ${ThinkNode_M5.lib_deps}
+  densaugeo/base64 @ ~1.4.0
diff --git a/variants/thinknode_m5/target.cpp b/variants/thinknode_m5/target.cpp
new file mode 100644
index 00000000..8208d2c4
--- /dev/null
+++ b/variants/thinknode_m5/target.cpp
@@ -0,0 +1,64 @@
+#include <Arduino.h>
+#include "target.h"
+#include <helpers/sensors/MicroNMEALocationProvider.h>
+
+ThinknodeM5Board board;
+
+#if defined(P_LORA_SCLK)
+  static SPIClass spi;
+  RADIO_CLASS radio = new Module(P_LORA_NSS, P_LORA_DIO_1, P_LORA_RESET, P_LORA_BUSY, spi);
+#else
+  RADIO_CLASS radio = new Module(P_LORA_NSS, P_LORA_DIO_1, P_LORA_RESET, P_LORA_BUSY);
+#endif
+
+WRAPPER_CLASS radio_driver(radio, board);
+
+ESP32RTCClock fallback_clock;
+AutoDiscoverRTCClock rtc_clock(fallback_clock);
+
+#ifdef ENV_INCLUDE_GPS
+MicroNMEALocationProvider nmea = MicroNMEALocationProvider(Serial1, &rtc_clock);
+EnvironmentSensorManager sensors = EnvironmentSensorManager(nmea);
+#else
+EnvironmentSensorManager sensors = EnvironmentSensorManager();
+#endif
+
+#ifdef DISPLAY_CLASS
+  DISPLAY_CLASS display;
+  MomentaryButton user_btn(PIN_USER_BTN, 1000, true);
+#endif
+
+bool radio_init() {
+  fallback_clock.begin();
+  rtc_clock.begin(Wire);
+  pinMode(P_LORA_EN, OUTPUT);
+  digitalWrite(P_LORA_EN, HIGH);
+  #if defined(P_LORA_SCLK)
+  spi.begin(P_LORA_SCLK, P_LORA_MISO, P_LORA_MOSI);
+  return radio.std_init(&spi);
+#else
+  return radio.std_init();
+#endif
+}
+
+uint32_t radio_get_rng_seed() {
+  return radio.random(0x7FFFFFFF);
+}
+
+
+void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
+  radio.setFrequency(freq);
+  radio.setSpreadingFactor(sf);
+  radio.setBandwidth(bw);
+  radio.setCodingRate(cr);
+}
+
+void radio_set_tx_power(uint8_t dbm) {
+  radio.setOutputPower(dbm);
+}
+
+mesh::LocalIdentity radio_new_identity() {
+  RadioNoiseListener rng(radio);
+  return mesh::LocalIdentity(&rng);  // create new random identity
+}
+
diff --git a/variants/thinknode_m5/target.h b/variants/thinknode_m5/target.h
new file mode 100644
index 00000000..2af42095
--- /dev/null
+++ b/variants/thinknode_m5/target.h
@@ -0,0 +1,35 @@
+#pragma once
+
+#define RADIOLIB_STATIC_ONLY 1
+#include <RadioLib.h>
+#include <helpers/radiolib/RadioLibWrappers.h>
+//#include <helpers/ESP32Board.h>
+#include <ThinknodeM5Board.h>
+#include <helpers/radiolib/CustomSX1262Wrapper.h>
+#include <helpers/AutoDiscoverRTCClock.h>
+#include <helpers/SensorManager.h>
+#include <helpers/sensors/EnvironmentSensorManager.h>
+#include <helpers/sensors/LocationProvider.h>
+#ifdef DISPLAY_CLASS
+  #include <helpers/ui/GxEPDDisplay.h>
+  #include <helpers/ui/MomentaryButton.h>
+#endif
+
+extern ThinknodeM5Board board;
+extern WRAPPER_CLASS radio_driver;
+extern AutoDiscoverRTCClock rtc_clock;
+extern EnvironmentSensorManager sensors;
+extern PCA9557 expander;
+
+#ifdef DISPLAY_CLASS
+  extern DISPLAY_CLASS display;
+  extern MomentaryButton user_btn;
+#endif
+
+bool radio_init();
+uint32_t radio_get_rng_seed();
+void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
+void radio_set_tx_power(uint8_t dbm);
+mesh::LocalIdentity radio_new_identity();
+
+ 
\ No newline at end of file
diff --git a/variants/thinknode_m5/variant.h b/variants/thinknode_m5/variant.h
new file mode 100644
index 00000000..9b82416b
--- /dev/null
+++ b/variants/thinknode_m5/variant.h
@@ -0,0 +1,28 @@
+#define I2C_SCL 1
+#define I2C_SDA 2
+#define PIN_VBAT_READ    8
+#define AREF_VOLTAGE            (3.0)
+#define ADC_MULTIPLIER (2.11F)
+#define PIN_BUZZER 9
+#define PIN_VEXT_EN_ACTIVE HIGH
+#define PIN_VEXT_EN 46
+#define PIN_USER_BTN 21
+//#define PIN_LED 3
+//#define PIN_STATUS_LED 1
+#define PIN_PWRBTN 14
+
+#define PIN_DISPLAY_MISO               (-1)
+#define PIN_DISPLAY_MOSI               (45)
+#define PIN_DISPLAY_SCLK               (38)
+#define PIN_DISPLAY_CS                 (39)
+#define PIN_DISPLAY_DC                 (40)
+#define PIN_DISPLAY_RST                (41)
+#define PIN_DISPLAY_BUSY               (42)
+#define EXP_PIN_BACKLIGHT              (5)
+#define EXP_PIN_POWER                  (4)
+
+#define PIN_GPS_EN                      (11)
+#define PIN_GPS_RESET                   (13)
+#define PIN_GPS_RX                      (20)
+#define PIN_GPS_TX                      (19)
+#define PIN_GPS_SWITCH                  (10)
\ No newline at end of file