diff --git a/src/ButtonThread.cpp b/src/ButtonThread.cpp
index 2363f804c..375029c99 100644
--- a/src/ButtonThread.cpp
+++ b/src/ButtonThread.cpp
@@ -116,46 +116,55 @@ ButtonThread::ButtonThread() : OSThread("Button")
 #endif
 }
 
+void ButtonThread::switchPage()
+{
+#ifdef BUTTON_PIN
+#if !defined(USERPREFS_BUTTON_PIN)
+    if (((config.device.button_gpio ? config.device.button_gpio : BUTTON_PIN) !=
+         moduleConfig.canned_message.inputbroker_pin_press) ||
+        !(moduleConfig.canned_message.updown1_enabled || moduleConfig.canned_message.rotary1_enabled) ||
+        !moduleConfig.canned_message.enabled) {
+        powerFSM.trigger(EVENT_PRESS);
+    }
+#endif
+#if defined(USERPREFS_BUTTON_PIN)
+    if (((config.device.button_gpio ? config.device.button_gpio : USERPREFS_BUTTON_PIN) !=
+         moduleConfig.canned_message.inputbroker_pin_press) ||
+        !(moduleConfig.canned_message.updown1_enabled || moduleConfig.canned_message.rotary1_enabled) ||
+        !moduleConfig.canned_message.enabled) {
+        powerFSM.trigger(EVENT_PRESS);
+    }
+#endif
+
+#endif
+#if defined(ARCH_PORTDUINO)
+    if ((settingsMap.count(user) != 0 && settingsMap[user] != RADIOLIB_NC) &&
+            (settingsMap[user] != moduleConfig.canned_message.inputbroker_pin_press) ||
+        !moduleConfig.canned_message.enabled) {
+        powerFSM.trigger(EVENT_PRESS);
+    }
+#endif
+}
+
+void ButtonThread::sendAdHocPosition()
+{
+    service->refreshLocalMeshNode();
+    auto sentPosition = service->trySendPosition(NODENUM_BROADCAST, true);
+    if (screen) {
+        if (sentPosition)
+            screen->print("Sent ad-hoc position\n");
+        else
+            screen->print("Sent ad-hoc nodeinfo\n");
+        screen->forceDisplay(true); // Force a new UI frame, then force an EInk update
+    }
+}
+
 int32_t ButtonThread::runOnce()
 {
     // If the button is pressed we suppress CPU sleep until release
     canSleep = true; // Assume we should not keep the board awake
 
 #if defined(BUTTON_PIN) || defined(USERPREFS_BUTTON_PIN)
-    // #if defined(ELECROW_ThinkNode_M1) || defined(ELECROW_ThinkNode_M2)
-    //     buzzer_updata();
-    //     if (buttonPressed) {
-    //         buttonPressed = false;            // 清除标志
-    //         LOG_INFO("PIN_BUTTON2 pressed!"); // 串口打印信息
-    //         // off_currentTime = millis();
-    //         while (digitalRead(PIN_BUTTON2) == HIGH) {
-    //             if (cont < 40) {
-    //                 //     unsigned long currentTime = millis(); // 获取当前时间
-    //                 //     if (currentTime - off_currentTime >= 1000) {
-    //                 cont++;
-    //                 //         off_currentTime = currentTime;
-    //                 //     }
-    //                 delay(100);
-    //             } else {
-
-    //                 currentState = OFF;
-    //                 isBuzzing = false;
-    //                 cont = 0;
-    //                 BEEP_STATE = false;
-    //                 analogWrite(M2_buzzer, 0);
-    //                 pinMode(M2_buzzer, INPUT);
-    //                 screen->setOn(false);
-    //                 cont = 0;
-    //                 LOG_INFO("GGGGGGGGGGGGGGGGGGGGGGGGG");
-    //                 pinMode(1, OUTPUT);
-    //                 digitalWrite(1, LOW);
-    //                 pinMode(6, OUTPUT);
-    //                 digitalWrite(6, LOW);
-    //             }
-    //         }
-    //     }
-
-    // #endif
     userButton.tick();
     canSleep &= userButton.isIdle();
 #elif defined(ARCH_PORTDUINO)
@@ -180,32 +189,27 @@ int32_t ButtonThread::runOnce()
             // If a nag notification is running, stop it and prevent other actions
             if (moduleConfig.external_notification.enabled && (externalNotificationModule->nagCycleCutoff != UINT32_MAX)) {
                 externalNotificationModule->stopNow();
-                return 50;
-            }
-#ifdef BUTTON_PIN
-#if !defined(USERPREFS_BUTTON_PIN)
-            if (((config.device.button_gpio ? config.device.button_gpio : BUTTON_PIN) !=
-#endif
-#if defined(USERPREFS_BUTTON_PIN)
-            if (((config.device.button_gpio ? config.device.button_gpio : USERPREFS_BUTTON_PIN) !=
-#endif
-                 moduleConfig.canned_message.inputbroker_pin_press) ||
-                !(moduleConfig.canned_message.updown1_enabled || moduleConfig.canned_message.rotary1_enabled) ||
-                !moduleConfig.canned_message.enabled) {
-                powerFSM.trigger(EVENT_PRESS);
-            }
-#endif
-#if defined(ARCH_PORTDUINO)
-            if ((settingsMap.count(user) != 0 && settingsMap[user] != RADIOLIB_NC) &&
-                    (settingsMap[user] != moduleConfig.canned_message.inputbroker_pin_press) ||
-                !moduleConfig.canned_message.enabled) {
-                powerFSM.trigger(EVENT_PRESS);
+                break;
             }
+#ifdef ELECROW_ThinkNode_M1
+            sendAdHocPosition();
+            break;
 #endif
+            switchPage();
             break;
         }
 
         case BUTTON_EVENT_PRESSED_SCREEN: {
+            LOG_BUTTON("AltPress!");
+#ifdef ELECROW_ThinkNode_M1
+            // If a nag notification is running, stop it and prevent other actions
+            if (moduleConfig.external_notification.enabled && (externalNotificationModule->nagCycleCutoff != UINT32_MAX)) {
+                externalNotificationModule->stopNow();
+                break;
+            }
+            switchPage();
+            break;
+#endif
             // turn screen on or off
             screen_flag = !screen_flag;
             if (screen)
@@ -215,22 +219,18 @@ int32_t ButtonThread::runOnce()
 
         case BUTTON_EVENT_DOUBLE_PRESSED: {
             LOG_BUTTON("Double press!");
-            service->refreshLocalMeshNode();
-            auto sentPosition = service->trySendPosition(NODENUM_BROADCAST, true);
-            if (screen) {
-                if (sentPosition)
-                    screen->print("Sent ad-hoc position\n");
-                else
-                    screen->print("Sent ad-hoc nodeinfo\n");
-                screen->forceDisplay(true); // Force a new UI frame, then force an EInk update
-            }
+#ifdef ELECROW_ThinkNode_M1
+            digitalWrite(PIN_EINK_EN, digitalRead(PIN_EINK_EN) == LOW);
+            break;
+#endif
+            sendAdHocPosition();
             break;
         }
 
         case BUTTON_EVENT_MULTI_PRESSED: {
             LOG_BUTTON("Mulitipress! %hux", multipressClickCount);
             switch (multipressClickCount) {
-#if HAS_GPS
+#if HAS_GPS && !defined(ELECROW_ThinkNode_M1)
             // 3 clicks: toggle GPS
             case 3:
                 if (!config.device.disable_triple_click && (gps != nullptr)) {
@@ -239,17 +239,17 @@ int32_t ButtonThread::runOnce()
                         screen->forceDisplay(true); // Force a new UI frame, then force an EInk update
                 }
                 break;
-#elif defined(ELECROW_ThinkNode_M2)
+#elif defined(ELECROW_ThinkNode_M1) || defined(ELECROW_ThinkNode_M2)
             case 3:
                 LOG_INFO("3 clicks: toggle buzzer");
                 buzzer_flag = !buzzer_flag;
-                if (buzzer_flag) {
-                    playBeep();
-                }
+                if (!buzzer_flag)
+                    noTone(PIN_BUZZER);
                 break;
+
 #endif
 
-#if defined(USE_EINK) && defined(PIN_EINK_EN) // i.e. T-Echo
+#if defined(USE_EINK) && defined(PIN_EINK_EN) && !defined(ELECROW_ThinkNode_M1) // i.e. T-Echo
             // 4 clicks: toggle backlight
             case 4:
                 digitalWrite(PIN_EINK_EN, digitalRead(PIN_EINK_EN) == LOW);
diff --git a/src/ButtonThread.h b/src/ButtonThread.h
index a8f1f77c3..3af700dd0 100644
--- a/src/ButtonThread.h
+++ b/src/ButtonThread.h
@@ -37,6 +37,9 @@ class ButtonThread : public concurrency::OSThread
     void attachButtonInterrupts();
     void detachButtonInterrupts();
     void storeClickCount();
+    bool isBuzzing() { return buzzer_flag; }
+    void setScreenFlag(bool flag) { screen_flag = flag; }
+    bool getScreenFlag() { return screen_flag; }
 
     // Disconnect and reconnect interrupts for light sleep
 #ifdef ARCH_ESP32
@@ -72,14 +75,12 @@ class ButtonThread : public concurrency::OSThread
 
     static void wakeOnIrq(int irq, int mode);
 
+    static void sendAdHocPosition();
+    static void switchPage();
+
     // IRQ callbacks
     static void userButtonPressed() { btnEvent = BUTTON_EVENT_PRESSED; }
-    static void userButtonPressedScreen()
-    {
-        if (millis() > c_holdOffTime) {
-            btnEvent = BUTTON_EVENT_PRESSED_SCREEN;
-        }
-    }
+    static void userButtonPressedScreen() { btnEvent = BUTTON_EVENT_PRESSED_SCREEN; }
     static void userButtonDoublePressed() { btnEvent = BUTTON_EVENT_DOUBLE_PRESSED; }
     static void userButtonMultiPressed(void *callerThread); // Retrieve click count from non-static Onebutton while still valid
     static void userButtonPressedLongStart();
diff --git a/src/Power.cpp b/src/Power.cpp
index 0dec0fc21..f11f8eac3 100644
--- a/src/Power.cpp
+++ b/src/Power.cpp
@@ -380,6 +380,20 @@ class AnalogBatteryLevel : public HasBatteryLevel
     // if we have a integrated device with a battery, we can assume that the battery is always connected
 #ifdef BATTERY_IMMUTABLE
     virtual bool isBatteryConnect() override { return true; }
+#elif defined(ADC_V)
+    virtual bool isBatteryConnect() override
+    {
+        int lastReading = digitalRead(ADC_V);
+        // 判断值是否变化
+        for (int i = 2; i < 500; i++) {
+            int reading = digitalRead(ADC_V);
+            if (reading != lastReading) {
+                return false; // 有变化，USB供电, 没接电池
+            }
+        }
+
+        return true;
+    }
 #else
     virtual bool isBatteryConnect() override { return getBatteryPercent() != -1; }
 #endif
@@ -533,9 +547,6 @@ Power::Power() : OSThread("Power")
 {
     statusHandler = {};
     low_voltage_counter = 0;
-#if defined(ELECROW_ThinkNode_M1) || defined(POWER_CFG)
-    low_voltage_counter_led3 = 0;
-#endif
 #ifdef DEBUG_HEAP
     lastheap = memGet.getFreeHeap();
 #endif
@@ -716,9 +727,6 @@ void Power::readPowerStatus()
     const PowerStatus powerStatus2 = PowerStatus(hasBattery, usbPowered, isChargingNow, batteryVoltageMv, batteryChargePercent);
     LOG_DEBUG("Battery: usbPower=%d, isCharging=%d, batMv=%d, batPct=%d", powerStatus2.getHasUSB(), powerStatus2.getIsCharging(),
               powerStatus2.getBatteryVoltageMv(), powerStatus2.getBatteryChargePercent());
-#if defined(ELECROW_ThinkNode_M1) || defined(POWER_CFG)
-    power_num = powerStatus2.getBatteryVoltageMv();
-#endif
     newStatus.notifyObservers(&powerStatus2);
 #ifdef DEBUG_HEAP
     if (lastheap != memGet.getFreeHeap()) {
@@ -766,9 +774,6 @@ void Power::readPowerStatus()
     if (batteryLevel && powerStatus2.getHasBattery() && !powerStatus2.getHasUSB()) {
         if (batteryLevel->getBattVoltage() < OCV[NUM_OCV_POINTS - 1]) {
             low_voltage_counter++;
-#if defined(ELECROW_ThinkNode_M1)
-            low_voltage_counter_led3 = low_voltage_counter;
-#endif
             LOG_DEBUG("Low voltage counter: %d/10", low_voltage_counter);
             if (low_voltage_counter > 10) {
 #ifdef ARCH_NRF52
@@ -781,13 +786,7 @@ void Power::readPowerStatus()
             }
         } else {
             low_voltage_counter = 0;
-#if defined(ELECROW_ThinkNode_M1)
-            low_voltage_counter_led3 = low_voltage_counter;
-#endif
         }
-#ifdef POWER_CFG
-        low_voltage_counter_led3 = low_voltage_counter;
-#endif
     }
 }
 
diff --git a/src/gps/GPS.cpp b/src/gps/GPS.cpp
index a2e7ebbc7..689f5e204 100644
--- a/src/gps/GPS.cpp
+++ b/src/gps/GPS.cpp
@@ -12,6 +12,7 @@
 #include "RTC.h"
 #include "Throttle.h"
 #include "buzz.h"
+#include "concurrency/Periodic.h"
 #include "meshUtils.h"
 
 #include "main.h" // pmu_found
@@ -89,6 +90,45 @@ static const char *getGPSPowerStateString(GPSPowerState state)
     }
 }
 
+#ifdef PIN_GPS_SWITCH
+// If we have a hardware switch, define a periodic watcher outside of the GPS runOnce thread, since this can be sleeping
+// idefinitely
+
+int lastState = LOW;
+bool firstrun = true;
+
+static int32_t gpsSwitch()
+{
+    if (gps) {
+        int currentState = digitalRead(PIN_GPS_SWITCH);
+
+        // if the switch is set to zero, disable the GPS Thread
+        if (firstrun)
+            if (currentState == LOW)
+                lastState = HIGH;
+
+        if (currentState != lastState) {
+            if (currentState == LOW) {
+                config.position.gps_mode = meshtastic_Config_PositionConfig_GpsMode_DISABLED;
+                if (!firstrun)
+                    playGPSDisableBeep();
+                gps->disable();
+            } else {
+                config.position.gps_mode = meshtastic_Config_PositionConfig_GpsMode_ENABLED;
+                if (!firstrun)
+                    playGPSEnableBeep();
+                gps->enable();
+            }
+            lastState = currentState;
+        }
+        firstrun = false;
+    }
+    return 1000;
+}
+
+static concurrency::Periodic *gpsPeriodic;
+#endif
+
 static void UBXChecksum(uint8_t *message, size_t length)
 {
     uint8_t CK_A = 0, CK_B = 0;
@@ -1390,6 +1430,12 @@ GPS *GPS::createGps()
     pinMode(PIN_GPS_PPS, INPUT);
 #endif
 
+#ifdef PIN_GPS_SWITCH
+    // toggle GPS via external GPIO switch
+    pinMode(PIN_GPS_SWITCH, INPUT);
+    gpsPeriodic = new concurrency::Periodic("GPSSwitch", gpsSwitch);
+#endif
+
 // Currently disabled per issue #525 (TinyGPS++ crash bug)
 // when fixed upstream, can be un-disabled to enable 3D FixType and PDOP
 #ifndef TINYGPS_OPTION_NO_CUSTOM_FIELDS
diff --git a/src/graphics/Screen.cpp b/src/graphics/Screen.cpp
index e27495f54..8075dd468 100644
--- a/src/graphics/Screen.cpp
+++ b/src/graphics/Screen.cpp
@@ -30,6 +30,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #if !MESHTASTIC_EXCLUDE_GPS
 #include "GPS.h"
 #endif
+#include "ButtonThread.h"
 #include "MeshService.h"
 #include "NodeDB.h"
 #include "error.h"
@@ -1606,6 +1607,7 @@ void Screen::handleSetOn(bool on, FrameCallback einkScreensaver)
     if (on != screenOn) {
         if (on) {
             LOG_INFO("Turn on screen");
+            buttonThread->setScreenFlag(true);
             powerMon->setState(meshtastic_PowerMon_State_Screen_On);
 #ifdef T_WATCH_S3
             PMU->enablePowerOutput(XPOWERS_ALDO2);
@@ -1641,6 +1643,7 @@ void Screen::handleSetOn(bool on, FrameCallback einkScreensaver)
             setScreensaverFrames(einkScreensaver);
 #endif
             LOG_INFO("Turn off screen");
+            buttonThread->setScreenFlag(false);
 #ifdef ELECROW_ThinkNode_M1
             if (digitalRead(PIN_EINK_EN) == HIGH) {
                 digitalWrite(PIN_EINK_EN, LOW);
diff --git a/src/main.cpp b/src/main.cpp
index fd65830ef..a528da8af 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -212,6 +212,60 @@ const char *getDeviceName()
     return name;
 }
 
+#if defined(ELECROW_ThinkNode_M1) || defined(ELECROW_ThinkNode_M2)
+static int32_t ledBlinkCount = 0;
+
+static int32_t elecrowLedBlinker()
+{
+    // are we in alert buzzer mode?
+    if (buttonThread->isBuzzing()) {
+
+        // blink LED three times for 3 seconds, then 3 times for a second, with one second pause
+        if (ledBlinkCount % 2) { // odd means LED OFF
+            ledBlink.set(false);
+            ledBlinkCount++;
+            if (ledBlinkCount >= 12)
+                ledBlinkCount = 0;
+            noTone(PIN_BUZZER);
+            return 1000;
+        } else {
+            if (ledBlinkCount < 6) {
+                ledBlink.set(true);
+                tone(PIN_BUZZER, 4000, 3000);
+                ledBlinkCount++;
+                return 3000;
+            } else {
+                ledBlink.set(true);
+                tone(PIN_BUZZER, 4000, 1000);
+                ledBlinkCount++;
+                return 1000;
+            }
+        }
+    } else {
+        ledBlinkCount = 0;
+        if (config.device.led_heartbeat_disabled)
+            return 1000;
+
+        static bool ledOn;
+        // when fully charged, remain on!
+        if (powerStatus->getIsCharging() && powerStatus->getBatteryChargePercent() >= 100) {
+            ledOn = true;
+        } else {
+            ledOn ^= 1;
+        }
+        ledBlink.set(ledOn);
+        // when charging, blink 0.5Hz square wave rate to indicate that
+        if (powerStatus->getIsCharging()) {
+            return 500;
+        }
+        // When almost empty, blink rapidly
+        if (!powerStatus->getIsCharging() && powerStatus->getBatteryChargePercent() < 10) {
+            return 250;
+        }
+    }
+    return 1000;
+}
+#else
 static int32_t ledBlinker()
 {
     // Still set up the blinking (heartbeat) interval but skip code path below, so LED will blink if
@@ -227,6 +281,7 @@ static int32_t ledBlinker()
     // have a very sparse duty cycle of LED being on, unless charging, then blink 0.5Hz square wave rate to indicate that
     return powerStatus->getIsCharging() ? 1000 : (ledOn ? 1 : 1000);
 }
+#endif
 
 uint32_t timeLastPowered = 0;
 
@@ -263,11 +318,6 @@ void printInfo()
 void setup()
 {
 
-#ifdef POWER_CHRG
-    pinMode(POWER_CHRG, OUTPUT);
-    digitalWrite(POWER_CHRG, HIGH);
-#endif
-
 #if defined(PIN_POWER_EN)
     pinMode(PIN_POWER_EN, OUTPUT);
     digitalWrite(PIN_POWER_EN, HIGH);
@@ -278,11 +328,6 @@ void setup()
     digitalWrite(LED_POWER, HIGH);
 #endif
 
-#ifdef POWER_LED
-    pinMode(POWER_LED, OUTPUT);
-    digitalWrite(POWER_LED, HIGH);
-#endif
-
 #ifdef USER_LED
     pinMode(USER_LED, OUTPUT);
     digitalWrite(USER_LED, LOW);
@@ -414,7 +459,12 @@ void setup()
 
     OSThread::setup();
 
+#if defined(ELECROW_ThinkNode_M1) || defined(ELECROW_ThinkNode_M2)
+    // The ThinkNodes have their own blink logic
+    ledPeriodic = new Periodic("Blink", elecrowLedBlinker);
+#else
     ledPeriodic = new Periodic("Blink", ledBlinker);
+#endif
 
     fsInit();
 
diff --git a/src/mesh/NodeDB.cpp b/src/mesh/NodeDB.cpp
index 9bb63652a..c89abbe74 100644
--- a/src/mesh/NodeDB.cpp
+++ b/src/mesh/NodeDB.cpp
@@ -743,6 +743,15 @@ void NodeDB::installDefaultModuleConfig()
     moduleConfig.external_notification.output_ms = 100;
     moduleConfig.external_notification.active = true;
 #endif
+#ifdef ELECROW_ThinkNode_M1
+    // Default to Elecrow USER_LED (blue)
+    moduleConfig.external_notification.enabled = true;
+    moduleConfig.external_notification.output = USER_LED;
+    moduleConfig.external_notification.active = true;
+    moduleConfig.external_notification.alert_message = true;
+    moduleConfig.external_notification.output_ms = 1000;
+    moduleConfig.external_notification.nag_timeout = 60;
+#endif
 #ifdef BUTTON_SECONDARY_CANNEDMESSAGES
     // Use a board's second built-in button as input source for canned messages
     moduleConfig.canned_message.enabled = true;
diff --git a/src/platform/esp32/main-esp32.cpp b/src/platform/esp32/main-esp32.cpp
index ab1e5c922..3c4faac3e 100644
--- a/src/platform/esp32/main-esp32.cpp
+++ b/src/platform/esp32/main-esp32.cpp
@@ -109,9 +109,8 @@ void esp32Setup()
     randomSeed(seed);
     */
 
-#ifdef POWER_FULL
-    pinMode(POWER_FULL, INPUT);
-    pinMode(7, INPUT);
+#ifdef ADC_V
+    pinMode(ADC_V, INPUT);
 #endif
 
     LOG_DEBUG("Total heap: %d", ESP.getHeapSize());
diff --git a/src/platform/nrf52/main-nrf52.cpp b/src/platform/nrf52/main-nrf52.cpp
index 53971e95a..9accd2a02 100644
--- a/src/platform/nrf52/main-nrf52.cpp
+++ b/src/platform/nrf52/main-nrf52.cpp
@@ -235,10 +235,6 @@ void nrf52InitSemiHosting()
 
 void nrf52Setup()
 {
-#ifdef USB_CHECK
-    pinMode(USB_CHECK, INPUT);
-#endif
-
 #ifdef ADC_V
     pinMode(ADC_V, INPUT);
 #endif
@@ -288,7 +284,7 @@ void cpuDeepSleep(uint32_t msecToWake)
 #endif
     // This may cause crashes as debug messages continue to flow.
     Serial.end();
-#ifdef PIN_SERIAL_RX1
+#ifdef PIN_SERIAL1_RX
     Serial1.end();
 #endif
     setBluetoothEnable(false);
diff --git a/src/power.h b/src/power.h
index 97944fef7..e9c0deb7c 100644
--- a/src/power.h
+++ b/src/power.h
@@ -84,11 +84,6 @@ class Power : private concurrency::OSThread
     void setStatusHandler(meshtastic::PowerStatus *handler) { statusHandler = handler; }
     const uint16_t OCV[11] = {OCV_ARRAY};
 
-#if defined(ELECROW_ThinkNode_M1) || defined(POWER_CFG)
-    uint8_t low_voltage_counter_led3;
-    int power_num = 0;
-#endif
-
   protected:
     meshtastic::PowerStatus *statusHandler;
 
diff --git a/variants/ELECROW-ThinkNode-M1/variant.h b/variants/ELECROW-ThinkNode-M1/variant.h
index fc2fddbdf..2e91e378d 100644
--- a/variants/ELECROW-ThinkNode-M1/variant.h
+++ b/variants/ELECROW-ThinkNode-M1/variant.h
@@ -41,16 +41,15 @@ extern "C" {
 #define NUM_ANALOG_INPUTS (1)
 #define NUM_ANALOG_OUTPUTS (0)
 
-#define PIN_LED1 -1
 #define PIN_LED2 -1
 #define PIN_LED3 -1
 
 // LED
-#define POWER_LED (32 + 6) // red
+#define PIN_LED1 (32 + 6) // red
 #define LED_POWER (32 + 4)
 #define USER_LED (0 + 13) // green
 // USB_CHECK
-#define USB_CHECK (32 + 3)
+#define EXT_PWR_DETECT (32 + 3)
 #define ADC_V (0 + 8)
 
 #define LED_RED PIN_LED3
@@ -59,7 +58,7 @@ extern "C" {
 #define LED_BUILTIN LED_BLUE
 #define LED_CONN PIN_GREEN
 #define LED_STATE_ON 0 // State when LED is lit  // LED灯亮时的状态
-#define M1_buzzer (0 + 6)
+#define PIN_BUZZER (0 + 6)
 /*
  * Buttons
  */
@@ -82,6 +81,7 @@ extern "C" {
 static const uint8_t A0 = PIN_A0;
 
 #define ADC_RESOLUTION 14
+#define BATTERY_SENSE_SAMPLES 30
 
 #define PIN_NFC1 (9)
 #define PIN_NFC2 (10)
@@ -159,7 +159,7 @@ External serial flash WP25R1635FZUIL0
 
 #define GPS_THREAD_INTERVAL 50
 
-#define PIN_GPS_PPS (32 + 1) // GPS开关判断
+#define PIN_GPS_SWITCH (32 + 1) // GPS开关判断
 
 #define PIN_SERIAL1_RX GPS_TX_PIN
 #define PIN_SERIAL1_TX GPS_RX_PIN
diff --git a/variants/ELECROW-ThinkNode-M2/variant.h b/variants/ELECROW-ThinkNode-M2/variant.h
index 801d5606f..55f35e498 100644
--- a/variants/ELECROW-ThinkNode-M2/variant.h
+++ b/variants/ELECROW-ThinkNode-M2/variant.h
@@ -1,14 +1,13 @@
 // Status
-#define LED_PIN_POWER 1
-#define BIAS_T_ENABLE LED_PIN_POWER
-#define BIAS_T_VALUE HIGH
+#define LED_PIN 1
 
 #define PIN_BUTTON1 47 // 功能键
 #define PIN_BUTTON2 4  // 电源键
 
-#define POWER_CFG
-#define POWER_CHRG 6
-#define POWER_FULL 42
+#define LED_PIN_POWER 6
+#define ADC_V 42
+// USB_CHECK
+#define EXT_PWR_DETECT 7
 
 #define PIN_BUZZER 5