diff --git a/src/configuration.h b/src/configuration.h
index 32d99295e..1615600f6 100644
--- a/src/configuration.h
+++ b/src/configuration.h
@@ -193,6 +193,15 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 // -----------------------------------------------------------------------------
 #define FT6336U_ADDR 0x48
 
+// -----------------------------------------------------------------------------
+// RAK12035VB Soil Monitor (using RAK12023 up to 3 RAK12035 monitors can be connected)
+// - the default i2c address for this sensor is 0x20, and users are instructed to
+// set 0x21 and 0x22 for the second and third sensor if present.
+// -----------------------------------------------------------------------------
+#define RAK120351_ADDR 0x20
+#define RAK120352_ADDR 0x21
+#define RAK120353_ADDR 0x22
+
 // -----------------------------------------------------------------------------
 // BIAS-T Generator
 // -----------------------------------------------------------------------------
diff --git a/src/detect/ScanI2C.h b/src/detect/ScanI2C.h
index 72184db69..1e91933a9 100644
--- a/src/detect/ScanI2C.h
+++ b/src/detect/ScanI2C.h
@@ -70,6 +70,7 @@ class ScanI2C
         DFROBOT_RAIN,
         DPS310,
         LTR390UV,
+        RAK12035,
         TCA8418KB,
         PCT2075,
     } DeviceType;
diff --git a/src/detect/ScanI2CTwoWire.cpp b/src/detect/ScanI2CTwoWire.cpp
index e2ba78a92..ba7b66793 100644
--- a/src/detect/ScanI2CTwoWire.cpp
+++ b/src/detect/ScanI2CTwoWire.cpp
@@ -423,9 +423,21 @@ void ScanI2CTwoWire::scanPort(I2CPort port, uint8_t *address, uint8_t asize)
                     logFoundDevice("BMA423", (uint8_t)addr.address);
                 }
                 break;
+            case TCA9535_ADDR:
+            case RAK120352_ADDR:
+            case RAK120353_ADDR:
+                registerValue = getRegisterValue(ScanI2CTwoWire::RegisterLocation(addr, 0x02), 1);
+                if (registerValue == addr.address) { // RAK12035 returns its I2C address at 0x02 (eg 0x20)
+                    type = RAK12035;
+                    logFoundDevice("RAK12035", (uint8_t)addr.address);
+                } else {
+                    type = TCA9535;
+                    logFoundDevice("TCA9535", (uint8_t)addr.address);
+                }
+
+                break;
 
                 SCAN_SIMPLE_CASE(LSM6DS3_ADDR, LSM6DS3, "LSM6DS3", (uint8_t)addr.address);
-                SCAN_SIMPLE_CASE(TCA9535_ADDR, TCA9535, "TCA9535", (uint8_t)addr.address);
                 SCAN_SIMPLE_CASE(TCA9555_ADDR, TCA9555, "TCA9555", (uint8_t)addr.address);
                 SCAN_SIMPLE_CASE(VEML7700_ADDR, VEML7700, "VEML7700", (uint8_t)addr.address);
                 SCAN_SIMPLE_CASE(TSL25911_ADDR, TSL2591, "TSL2591", (uint8_t)addr.address);
diff --git a/src/main.cpp b/src/main.cpp
index 7a11ca2e0..792e87360 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -732,6 +732,7 @@ void setup()
     scannerToSensorsMap(i2cScanner, ScanI2C::DeviceType::DFROBOT_RAIN, meshtastic_TelemetrySensorType_DFROBOT_RAIN);
     scannerToSensorsMap(i2cScanner, ScanI2C::DeviceType::LTR390UV, meshtastic_TelemetrySensorType_LTR390UV);
     scannerToSensorsMap(i2cScanner, ScanI2C::DeviceType::DPS310, meshtastic_TelemetrySensorType_DPS310);
+    scannerToSensorsMap(i2cScanner, ScanI2C::DeviceType::RAK12035, meshtastic_TelemetrySensorType_RAK12035);
     scannerToSensorsMap(i2cScanner, ScanI2C::DeviceType::PCT2075, meshtastic_TelemetrySensorType_PCT2075);
 
     i2cScanner.reset();
diff --git a/src/modules/Telemetry/EnvironmentTelemetry.cpp b/src/modules/Telemetry/EnvironmentTelemetry.cpp
index 6d29fecb2..aaab8d0e6 100644
--- a/src/modules/Telemetry/EnvironmentTelemetry.cpp
+++ b/src/modules/Telemetry/EnvironmentTelemetry.cpp
@@ -19,8 +19,8 @@
 #include <OLEDDisplayUi.h>
 
 #if !MESHTASTIC_EXCLUDE_ENVIRONMENTAL_SENSOR_EXTERNAL
-// Sensors
 
+// Sensors
 #include "Sensor/CGRadSensSensor.h"
 #include "Sensor/RCWL9620Sensor.h"
 #include "Sensor/nullSensor.h"
@@ -101,6 +101,13 @@ SHTC3Sensor shtc3Sensor;
 NullSensor shtc3Sensor;
 #endif
 
+#if __has_include("RAK12035_SoilMoisture.h") && defined(RAK_4631) && RAK_4631 == 1
+#include "Sensor/RAK12035Sensor.h"
+RAK12035Sensor rak12035Sensor;
+#else
+NullSensor rak12035Sensor;
+#endif
+
 #if __has_include(<Adafruit_VEML7700.h>)
 #include "Sensor/VEML7700Sensor.h"
 VEML7700Sensor veml7700Sensor;
@@ -173,6 +180,7 @@ NullSensor pct2075Sensor;
 
 RCWL9620Sensor rcwl9620Sensor;
 CGRadSensSensor cgRadSens;
+
 #endif
 #ifdef T1000X_SENSOR_EN
 #include "Sensor/T1000xSensor.h"
@@ -182,6 +190,7 @@ T1000xSensor t1000xSensor;
 #include "Sensor/IndicatorSensor.h"
 IndicatorSensor indicatorSensor;
 #endif
+
 #define FAILED_STATE_SENSOR_READ_MULTIPLIER 10
 #define DISPLAY_RECEIVEID_MEASUREMENTS_ON_SCREEN true
 
@@ -288,6 +297,11 @@ int32_t EnvironmentTelemetryModule::runOnce()
 
             result = rak9154Sensor.runOnce();
 #endif
+#if __has_include("RAK12035_SoilMoisture.h") && defined(RAK_4631) && RAK_4631 == 1
+            if (rak12035Sensor.hasSensor()) {
+                result = rak12035Sensor.runOnce();
+            }
+#endif
 #endif
         }
         // it's possible to have this module enabled, only for displaying values on the screen.
@@ -625,6 +639,14 @@ bool EnvironmentTelemetryModule::getEnvironmentTelemetry(meshtastic_Telemetry *m
     valid = valid && rak9154Sensor.getMetrics(m);
     hasSensor = true;
 #endif
+#if __has_include("RAK12035_SoilMoisture.h") && defined(RAK_4631) &&                                                             \
+                  RAK_4631 ==                                                                                                    \
+                      1 // Not really needed, but may as well just skip at a lower level it if no library or not a RAK_4631
+    if (rak12035Sensor.hasSensor()) {
+        valid = valid && rak12035Sensor.getMetrics(m);
+        hasSensor = true;
+    }
+#endif
 #endif
     return valid && hasSensor;
 }
@@ -679,6 +701,9 @@ bool EnvironmentTelemetryModule::sendTelemetry(NodeNum dest, bool phoneOnly)
 
         LOG_INFO("Send: radiation=%fµR/h", m.variant.environment_metrics.radiation);
 
+        LOG_INFO("Send: soil_temperature=%f, soil_moisture=%u", m.variant.environment_metrics.soil_temperature,
+                 m.variant.environment_metrics.soil_moisture);
+
         sensor_read_error_count = 0;
 
         meshtastic_MeshPacket *p = allocDataProtobuf(m);
@@ -850,8 +875,17 @@ AdminMessageHandleResult EnvironmentTelemetryModule::handleAdminMessageForModule
         if (result != AdminMessageHandleResult::NOT_HANDLED)
             return result;
     }
+#if __has_include("RAK12035_SoilMoisture.h") && defined(RAK_4631) &&                                                             \
+                  RAK_4631 ==                                                                                                    \
+                      1 // Not really needed, but may as well just skip it at a lower level if no library or not a RAK_4631
+    if (rak12035Sensor.hasSensor()) {
+        result = rak12035Sensor.handleAdminMessage(mp, request, response);
+        if (result != AdminMessageHandleResult::NOT_HANDLED)
+            return result;
+    }
+#endif
 #endif
     return result;
 }
 
-#endif
\ No newline at end of file
+#endif
diff --git a/src/modules/Telemetry/Sensor/RAK12035Sensor.cpp b/src/modules/Telemetry/Sensor/RAK12035Sensor.cpp
new file mode 100644
index 000000000..e4fa473bd
--- /dev/null
+++ b/src/modules/Telemetry/Sensor/RAK12035Sensor.cpp
@@ -0,0 +1,107 @@
+#include "configuration.h"
+#if !MESHTASTIC_EXCLUDE_ENVIRONMENTAL_SENSOR && __has_include("RAK12035_SoilMoisture.h") && defined(RAK_4631) && RAK_4631 == 1
+
+#include "../mesh/generated/meshtastic/telemetry.pb.h"
+#include "RAK12035Sensor.h"
+
+RAK12035Sensor::RAK12035Sensor() : TelemetrySensor(meshtastic_TelemetrySensorType_RAK12035, "RAK12035") {}
+
+int32_t RAK12035Sensor::runOnce()
+{
+    if (!hasSensor()) {
+        return DEFAULT_SENSOR_MINIMUM_WAIT_TIME_BETWEEN_READS;
+    }
+
+    // TODO:: check for up to 2 additional sensors and start them if present.
+    sensor.set_sensor_addr(RAK120351_ADDR);
+    delay(100);
+    sensor.begin(nodeTelemetrySensorsMap[sensorType].first);
+
+    // Get sensor firmware version
+    uint8_t data = 0;
+    sensor.get_sensor_version(&data);
+    if (data != 0) {
+        LOG_INFO("Init sensor: %s", sensorName);
+        LOG_INFO("RAK12035Sensor Init Succeed \nSensor1 Firmware version: %i, Sensor Name: %s", data, sensorName);
+        status = true;
+    } else {
+        LOG_INFO("Init sensor: %s \n", sensorName);
+        LOG_ERROR("RAK12035Sensor Init Failed");
+        status = false;
+    }
+    sensor.sensor_sleep();
+    return initI2CSensor();
+}
+
+void RAK12035Sensor::setup()
+{
+    // Set the calibration values
+    // Reading the saved calibration values from the sensor.
+    // TODO:: Check for and run calibration check for up to 2 additional sensors if present.
+    uint16_t zero_val = 0;
+    uint16_t hundred_val = 0;
+    uint16_t default_zero_val = 550;
+    uint16_t default_hundred_val = 420;
+    sensor.sensor_on();
+    delay(200);
+    sensor.get_dry_cal(&zero_val);
+    sensor.get_wet_cal(&hundred_val);
+    delay(200);
+    if (zero_val == 0 || zero_val <= hundred_val) {
+        LOG_INFO("Dry calibration value is %d", zero_val);
+        LOG_INFO("Wet calibration value is %d", hundred_val);
+        LOG_INFO("This does not make sense. You can recalibrate this sensor using the calibration sketch included here: "
+                 "https://github.com/RAKWireless/RAK12035_SoilMoisture.");
+        LOG_INFO("For now, setting default calibration value for Dry Calibration: %d", default_zero_val);
+        sensor.set_dry_cal(default_zero_val);
+        sensor.get_dry_cal(&zero_val);
+        LOG_INFO("Dry calibration reset complete. New value is %d", zero_val);
+    }
+    if (hundred_val == 0 || hundred_val >= zero_val) {
+        LOG_INFO("Dry calibration value is %d", zero_val);
+        LOG_INFO("Wet calibration value is %d", hundred_val);
+        LOG_INFO("This does not make sense. You can recalibrate this sensor using the calibration sketch included here: "
+                 "https://github.com/RAKWireless/RAK12035_SoilMoisture.");
+        LOG_INFO("For now, setting default calibration value for Wet Calibration: %d", default_hundred_val);
+        sensor.set_wet_cal(default_hundred_val);
+        sensor.get_wet_cal(&hundred_val);
+        LOG_INFO("Wet calibration reset complete. New value is %d", hundred_val);
+    }
+    sensor.sensor_sleep();
+    delay(200);
+    LOG_INFO("Dry calibration value is %d", zero_val);
+    LOG_INFO("Wet calibration value is %d", hundred_val);
+}
+
+bool RAK12035Sensor::getMetrics(meshtastic_Telemetry *measurement)
+{
+    // TODO:: read and send metrics for up to 2 additional soil monitors if present.
+    //  -- how to do this.. this could get a little complex..
+    //     ie - 1> we combine them into an average and send that, 2> we send them as separate metrics
+    //      ^-- these scenarios would require different handling of the metrics in the receiving end and maybe a setting in the
+    //      device ui and an additional proto for that?
+    measurement->variant.environment_metrics.has_soil_temperature = true;
+    measurement->variant.environment_metrics.has_soil_moisture = true;
+
+    uint8_t moisture = 0;
+    uint16_t temp = 0;
+    bool success = false;
+
+    sensor.sensor_on();
+    delay(200);
+    success = sensor.get_sensor_moisture(&moisture);
+    delay(200);
+    success &= sensor.get_sensor_temperature(&temp);
+    delay(200);
+    sensor.sensor_sleep();
+
+    if (success == false) {
+        LOG_ERROR("Failed to read sensor data");
+        return false;
+    }
+    measurement->variant.environment_metrics.soil_temperature = ((float)temp / 10.0f);
+    measurement->variant.environment_metrics.soil_moisture = moisture;
+
+    return true;
+}
+#endif
diff --git a/src/modules/Telemetry/Sensor/RAK12035Sensor.h b/src/modules/Telemetry/Sensor/RAK12035Sensor.h
new file mode 100644
index 000000000..2c32a840d
--- /dev/null
+++ b/src/modules/Telemetry/Sensor/RAK12035Sensor.h
@@ -0,0 +1,28 @@
+#pragma once
+
+#include "configuration.h"
+
+#if !MESHTASTIC_EXCLUDE_ENVIRONMENTAL_SENSOR && __has_include(<RAK12035_SoilMoisture.h>) && defined(RAK_4631)
+#ifndef _MT_RAK12035VBSENSOR_H
+#define _MT_RAK12035VBSENSOR_H
+#endif
+
+#include "../mesh/generated/meshtastic/telemetry.pb.h"
+#include "RAK12035_SoilMoisture.h"
+#include "TelemetrySensor.h"
+#include <Arduino.h>
+
+class RAK12035Sensor : public TelemetrySensor
+{
+  private:
+    RAK12035 sensor;
+
+  protected:
+    virtual void setup() override;
+
+  public:
+    RAK12035Sensor();
+    virtual int32_t runOnce() override;
+    virtual bool getMetrics(meshtastic_Telemetry *measurement) override;
+};
+#endif
diff --git a/variants/rak4631/platformio.ini b/variants/rak4631/platformio.ini
index f2d68e704..ee134e87a 100644
--- a/variants/rak4631/platformio.ini
+++ b/variants/rak4631/platformio.ini
@@ -18,6 +18,7 @@ lib_deps =
   melopero/Melopero RV3028@^1.1.0
   https://github.com/RAKWireless/RAK13800-W5100S/archive/1.0.2.zip
   rakwireless/RAKwireless NCP5623 RGB LED library@^1.0.2
+  beegee-tokyo/RAK12035_SoilMoisture@^1.0.4
   https://github.com/RAKWireless/RAK12034-BMX160/archive/dcead07ffa267d3c906e9ca4a1330ab989e957e2.zip
 
 ; If not set we will default to uploading over serial (first it forces bootloader entry by talking 1200bps to cdcacm)
@@ -51,4 +52,4 @@ lib_deps =
 upload_protocol = stlink
 ; eventually use platformio/tool-pyocd@^2.3600.0 instad
 ;upload_protocol = custom
-;upload_command = pyocd flash -t nrf52840 $UPLOADERFLAGS $SOURCE
\ No newline at end of file
+;upload_command = pyocd flash -t nrf52840 $UPLOADERFLAGS $SOURCE
diff --git a/variants/rak4631/variant.h b/variants/rak4631/variant.h
index 0da1c04ea..46a6140f3 100644
--- a/variants/rak4631/variant.h
+++ b/variants/rak4631/variant.h
@@ -90,6 +90,8 @@ static const uint8_t A7 = PIN_A7;
 // Other pins
 #define PIN_AREF (2)
 #define PIN_NFC1 (9)
+#define WB_IO5 PIN_NFC1
+#define WB_IO4 (4)
 #define PIN_NFC2 (10)
 
 static const uint8_t AREF = PIN_AREF;
@@ -223,6 +225,7 @@ SO GPIO 39/TXEN MAY NOT BE DEFINED FOR SUCCESSFUL OPERATION OF THE SX1262 - TG
 // enables 3.3V periphery like GPS or IO Module
 // Do not toggle this for GPS power savings
 #define PIN_3V3_EN (34)
+#define WB_IO2 PIN_3V3_EN
 
 // RAK1910 GPS module
 // If using the wisblock GPS module and pluged into Port A on WisBlock base
@@ -276,4 +279,4 @@ SO GPIO 39/TXEN MAY NOT BE DEFINED FOR SUCCESSFUL OPERATION OF THE SX1262 - TG
  *        Arduino objects - C++ only
  *----------------------------------------------------------------------------*/
 
-#endif
\ No newline at end of file
+#endif
diff --git a/variants/rak4631_epaper/platformio.ini b/variants/rak4631_epaper/platformio.ini
index 7c8a299bb..47e4451c7 100644
--- a/variants/rak4631_epaper/platformio.ini
+++ b/variants/rak4631_epaper/platformio.ini
@@ -16,6 +16,7 @@ lib_deps =
   melopero/Melopero RV3028@^1.1.0
   rakwireless/RAKwireless NCP5623 RGB LED library@^1.0.2
   beegee-tokyo/RAKwireless RAK12034@^1.0.0
+  beegee-tokyo/RAK12035_SoilMoisture@^1.0.4
 debug_tool = jlink
 ; If not set we will default to uploading over serial (first it forces bootloader entry by talking 1200bps to cdcacm)
 ;upload_protocol = jlink
diff --git a/variants/rak4631_epaper/variant.h b/variants/rak4631_epaper/variant.h
index 0bb97498c..c1e11bee5 100644
--- a/variants/rak4631_epaper/variant.h
+++ b/variants/rak4631_epaper/variant.h
@@ -90,6 +90,8 @@ static const uint8_t A7 = PIN_A7;
 // Other pins
 #define PIN_AREF (2)
 #define PIN_NFC1 (9)
+#define WB_IO5 PIN_NFC1
+#define WB_IO4 (4)
 #define PIN_NFC2 (10)
 
 static const uint8_t AREF = PIN_AREF;
@@ -188,6 +190,7 @@ static const uint8_t SCK = PIN_SPI_SCK;
 
 // enables 3.3V periphery like GPS or IO Module
 #define PIN_3V3_EN (34)
+#define WB_IO2 PIN_3V3_EN
 
 // RAK1910 GPS module
 // If using the wisblock GPS module and pluged into Port A on WisBlock base
@@ -231,4 +234,4 @@ static const uint8_t SCK = PIN_SPI_SCK;
  *        Arduino objects - C++ only
  *----------------------------------------------------------------------------*/
 
-#endif
\ No newline at end of file
+#endif
diff --git a/variants/rak4631_epaper_onrxtx/platformio.ini b/variants/rak4631_epaper_onrxtx/platformio.ini
index c749fc686..52a13f2a7 100644
--- a/variants/rak4631_epaper_onrxtx/platformio.ini
+++ b/variants/rak4631_epaper_onrxtx/platformio.ini
@@ -18,6 +18,7 @@ lib_deps =
   melopero/Melopero RV3028@^1.1.0
   rakwireless/RAKwireless NCP5623 RGB LED library@^1.0.2
   beegee-tokyo/RAKwireless RAK12034@^1.0.0
+  beegee-tokyo/RAK12035_SoilMoisture@^1.0.4
 debug_tool = jlink
 ; If not set we will default to uploading over serial (first it forces bootloader entry by talking 1200bps to cdcacm)
 ;upload_protocol = jlink
diff --git a/variants/rak4631_epaper_onrxtx/variant.h b/variants/rak4631_epaper_onrxtx/variant.h
index 5888cff33..1f8257e8e 100644
--- a/variants/rak4631_epaper_onrxtx/variant.h
+++ b/variants/rak4631_epaper_onrxtx/variant.h
@@ -69,7 +69,9 @@ static const uint8_t A7 = PIN_A7;
 
 // Other pins
 #define PIN_AREF (2)
-// #define PIN_NFC1 (9)
+#define PIN_NFC1 (9)
+#define WB_IO5 PIN_NFC1
+#define WB_IO4 (4)
 // #define PIN_NFC2 (10)
 
 static const uint8_t AREF = PIN_AREF;
@@ -160,6 +162,7 @@ static const uint8_t SCK = PIN_SPI_SCK;
 
 // enables 3.3V periphery like GPS or IO Module
 #define PIN_3V3_EN (34)
+#define WB_IO2 PIN_3V3_EN
 
 // NO GPS
 #undef GPS_RX_PIN
@@ -202,4 +205,4 @@ static const uint8_t SCK = PIN_SPI_SCK;
  *        Arduino objects - C++ only
  *----------------------------------------------------------------------------*/
 
-#endif
\ No newline at end of file
+#endif
diff --git a/variants/rak4631_eth_gw/variant.h b/variants/rak4631_eth_gw/variant.h
index bc5541336..c8a2f83ae 100644
--- a/variants/rak4631_eth_gw/variant.h
+++ b/variants/rak4631_eth_gw/variant.h
@@ -90,6 +90,8 @@ static const uint8_t A7 = PIN_A7;
 // Other pins
 #define PIN_AREF (2)
 #define PIN_NFC1 (9)
+#define WB_IO5 PIN_NFC1
+#define WB_IO4 (4)
 #define PIN_NFC2 (10)
 
 static const uint8_t AREF = PIN_AREF;
@@ -217,6 +219,7 @@ SO GPIO 39/TXEN MAY NOT BE DEFINED FOR SUCCESSFUL OPERATION OF THE SX1262 - TG
 // enables 3.3V periphery like GPS or IO Module
 // Do not toggle this for GPS power savings
 #define PIN_3V3_EN (34)
+#define WB_IO2 PIN_3V3_EN
 
 // RAK1910 GPS module
 // If using the wisblock GPS module and pluged into Port A on WisBlock base
@@ -270,4 +273,4 @@ SO GPIO 39/TXEN MAY NOT BE DEFINED FOR SUCCESSFUL OPERATION OF THE SX1262 - TG
  *        Arduino objects - C++ only
  *----------------------------------------------------------------------------*/
 
-#endif
\ No newline at end of file
+#endif
diff --git a/variants/rak_wismeshtap/platformio.ini b/variants/rak_wismeshtap/platformio.ini
index 6ed97c7ad..bfb3ea927 100644
--- a/variants/rak_wismeshtap/platformio.ini
+++ b/variants/rak_wismeshtap/platformio.ini
@@ -22,6 +22,7 @@ lib_deps =
   bodmer/TFT_eSPI
   beegee-tokyo/RAKwireless RAK12034@^1.0.0
   beegee-tokyo/RAK14014-FT6336U @ 1.0.1
+  beegee-tokyo/RAK12035_SoilMoisture@^1.0.4
 debug_tool = jlink
 ; If not set we will default to uploading over serial (first it forces bootloader entry by talking 1200bps to cdcacm)
 ;upload_protocol = jlink
diff --git a/variants/rak_wismeshtap/variant.h b/variants/rak_wismeshtap/variant.h
index 1980dc4a1..f961ddf6e 100644
--- a/variants/rak_wismeshtap/variant.h
+++ b/variants/rak_wismeshtap/variant.h
@@ -90,6 +90,8 @@ static const uint8_t A7 = PIN_A7;
 // Other pins
 #define PIN_AREF (2)
 #define PIN_NFC1 (9)
+#define WB_IO5 PIN_NFC1
+#define WB_IO4 (4)
 #define PIN_NFC2 (10)
 
 static const uint8_t AREF = PIN_AREF;
@@ -176,11 +178,11 @@ static const uint8_t SCK = PIN_SPI_SCK;
 // No reason not to have the RAK Wireless pin defs here too.  This allows code from example RAK sketches to run without
 // modification.
 
-static const uint8_t WB_IO1 = 17;      // SLOT_A SLOT_B
-static const uint8_t WB_IO2 = 34;      // SLOT_A SLOT_B
-static const uint8_t WB_IO3 = 21;      // SLOT_C
-static const uint8_t WB_IO4 = 4;       // SLOT_C
-static const uint8_t WB_IO5 = 9;       // SLOT_D
+static const uint8_t WB_IO1 = 17; // SLOT_A SLOT_B
+static const uint8_t WB_IO2 = 34; // SLOT_A SLOT_B
+static const uint8_t WB_IO3 = 21; // SLOT_C
+// static const uint8_t WB_IO4 = 4;       // SLOT_C <- already defined above (ln. 94)
+// static const uint8_t WB_IO5 = 9;       // SLOT_D <- already defined above (ln. 93)
 static const uint8_t WB_IO6 = 10;      // SLOT_D
 static const uint8_t WB_SW1 = 33;      // IO_SLOT
 static const uint8_t WB_A0 = 5;        // IO_SLOT
@@ -314,4 +316,4 @@ SO GPIO 39/TXEN MAY NOT BE DEFINED FOR SUCCESSFUL OPERATION OF THE SX1262 - TG
  *        Arduino objects - C++ only
  *----------------------------------------------------------------------------*/
 
-#endif
\ No newline at end of file
+#endif