diff --git a/variants/nrf52840/diy/moonshine_NRF52_ebyte/platformio.ini b/variants/nrf52840/diy/moonshine_NRF52_ebyte/platformio.ini
new file mode 100644
index 000000000..4e102e76f
--- /dev/null
+++ b/variants/nrf52840/diy/moonshine_NRF52_ebyte/platformio.ini
@@ -0,0 +1,22 @@
+; Moonshine NRF52 ebyte - DIY variant (Ebyte nRF52840 + E22-400M33S)
+; Uses S140 v6 SoftDevice (matches nice!nano / Adafruit Feather factory bootloader).
+; Inherits the default v6 ldscript from [nrf52840_base] (app start at 0x26000).
+[env:moonshine_NRF52_ebyte]
+extends = nrf52840_base
+board = adafruit_feather_nrf52840
+build_flags = ${nrf52840_base.build_flags}
+  -I variants/nrf52840/diy/moonshine_NRF52_ebyte
+  -D PRIVATE_HW
+  -D CONFIG_GPIO_AS_PINRESET
+  -D MESHTASTIC_EXCLUDE_I2C=1
+  -D MESHTASTIC_EXCLUDE_ENVIRONMENTAL_SENSOR=1
+  -D MESHTASTIC_EXCLUDE_INPUTBROKER=1
+  -D MESHTASTIC_EXCLUDE_ACCELEROMETER=1
+  -D MESHTASTIC_EXCLUDE_MAGNETOMETER=1
+  -D MESHTASTIC_EXCLUDE_GPS=1
+  -D MESHTASTIC_EXCLUDE_SCREEN=1
+build_src_filter = ${nrf52_base.build_src_filter} +<../variants/nrf52840/diy/moonshine_NRF52_ebyte>
+debug_tool = jlink
+; Upload via USB: pio run -e moonshine_NRF52_ebyte -t upload
+; Uses 1200bps touch to enter DFU bootloader, then nrfutil serial DFU.
+; Alternative: double-tap reset -> drag .uf2 to USB mass storage
diff --git a/variants/nrf52840/diy/moonshine_NRF52_ebyte/readme.md b/variants/nrf52840/diy/moonshine_NRF52_ebyte/readme.md
new file mode 100644
index 000000000..fc9b53524
--- /dev/null
+++ b/variants/nrf52840/diy/moonshine_NRF52_ebyte/readme.md
@@ -0,0 +1,114 @@
+# Moonshine NRF52 ebyte
+
+DIY Meshtastic node variant based on an Ebyte nRF52840 MCU module and E22-400M33S LoRa module.
+
+## Hardware
+
+- **MCU module**: Ebyte nRF52840 (512 KB flash / 128 KB RAM)
+- **LF clock**: 32.768 kHz crystal (`USE_LFXO`)
+- **LoRa**: E22-400M33S (SX1268 + 33dBm PA, 2W, 433MHz) - `SX126X_MAX_POWER=8`,
+  `TX_GAIN_LORA=25`. `SX126X_RXEN` (P1.09) is MCU-controlled by RadioLib; TXEN is
+  driven by DIO2 (`SX126X_DIO2_AS_RF_SWITCH`). TCXO voltage 1.8V with `TCXO_OPTIONAL`
+  fallback to XTAL.
+- **LED**: Bluetooth pairing status on P0.15 (`LED_PAIRING`). Solid on = BLE
+  connected, slow blink = unpaired, fast blink = pairing, off after 30s idle.
+- **Battery ADC**: 0.5 voltage divider (equal resistors)
+- **USB CDC serial**: enabled by default (nRF52840 built-in USB-ACM). Debug output
+  and Meshtastic CLI communication go through the USB serial port.
+- **I2C**: SDA/SCL pins wired (P0.08/P0.04) but no I2C devices connected.
+
+## Pin map
+
+| Function      | Pin   | Notes                              |
+| ------------- | ----- | ---------------------------------- |
+| LED           | P0.15 | Bluetooth pairing status           |
+| CHARGE_DET    | P0.13 | Active high (charging)             |
+| BUTTON        | P0.24 | User button                        |
+| BUZZER        | P1.11 | PWM buzzer                         |
+| BATTERY_ADC   | P0.03 | AIN1, 0.5 divider                  |
+| IIC_SDA       | P0.08 | Wired, no device                   |
+| IIC_SCL       | P0.04 | Wired, no device                   |
+| SPI_MISO      | P1.00 |                                    |
+| SPI_MOSI      | P0.22 |                                    |
+| SPI_SCK       | P0.20 |                                    |
+| LORA_CS       | P0.17 |                                    |
+| LORA_DIO1     | P1.10 | IRQ                                |
+| LORA_BUSY     | P0.28 | AIN4 (AI4)                         |
+| LORA_RESET    | P1.13 |                                    |
+| LORA_RXEN     | P1.09 | MCU-controlled RXEN; TXEN via DIO2 |
+
+## Build & Flash
+
+### Build
+
+```sh
+pio run -e moonshine_NRF52_ebyte
+```
+
+Uses `PRIVATE_HW` (HardwareModel 255) - no protobuf or `architecture.h` changes
+required.
+
+The build links against `nrf52840_s140_v6.ld`, so the application is linked to
+start at `0x26000` and requires the S140 SoftDevice v6.x to be present on the
+chip at `0x0`-`0x25FFF`. The build output (`firmware-*.hex` / `.uf2`) contains
+**only the application**, not the SoftDevice.
+
+### Flash via USB (nice!nano)
+
+The nice!nano comes pre-flashed with the S140 v6 SoftDevice and the Adafruit
+UF2 bootloader. No SWD probe is needed - firmware can be uploaded over USB.
+
+**Method 1: PlatformIO serial DFU (recommended)**
+
+```sh
+pio run -e moonshine_NRF52_ebyte -t upload
+```
+
+PlatformIO opens the USB CDC serial port at 1200 baud to trigger the DFU
+bootloader, then uploads via `nrfutil` serial DFU. The board automatically
+resets into the application after upload.
+
+**Method 2: UF2 drag-and-drop**
+
+1. Double-tap the Reset button to enter UF2 bootloader mode. A USB mass storage
+   volume will appear (e.g. `NRF52BOOT`).
+2. Copy the `.uf2` file from `.pio/build/moonshine_NRF52_ebyte/firmware-*.uf2`
+   to the USB volume.
+3. The board automatically resets into the application after the file transfer
+   completes.
+
+### Flash via SWD (alternative)
+
+If the SoftDevice or bootloader is missing or corrupted, flash via SWD with
+OpenOCD (CMSIS-DAP / J-Link / ST-Link):
+
+```sh
+# Full flow: recover (erase all + unlock) -> SoftDevice -> app -> reset
+openocd -f interface/cmsis-dap.cfg -f target/nrf52.cfg \
+  -c "init; nrf52_recover; \
+      program bin/s140_nrf52_7.3.0_softdevice.hex verify; \
+      program .pio/build/moonshine_NRF52_ebyte/firmware-*.hex verify; \
+      reset run; exit"
+```
+
+When the SoftDevice is already on the chip and only the application changed,
+skip `nrf52_recover` and the SoftDevice line:
+
+```sh
+openocd -f interface/cmsis-dap.cfg -f target/nrf52.cfg \
+  -c "init; \
+      program .pio/build/moonshine_NRF52_ebyte/firmware-*.hex verify; \
+      reset run; exit"
+```
+
+## Notes
+
+- The firmware hex filename contains a commit hash (e.g. `2.8.0.421838f`); use
+  the actual file produced by `pio run` or a shell glob.
+- USB CDC serial is available immediately after boot for debug output and the
+  Meshtastic Python CLI (`meshtastic --noproto` / `meshtastic --info`).
+- `MESHTASTIC_EXCLUDE_I2C=1` is set because no I2C devices are connected. Remove
+  this flag from `platformio.ini` if an I2C display or sensor is added later.
+- No GPS, screen, accelerometer, or magnetometer is configured. Remove the
+  corresponding `MESHTASTIC_EXCLUDE_*` flags from `platformio.ini` if hardware
+  is added.
diff --git a/variants/nrf52840/diy/moonshine_NRF52_ebyte/variant.cpp b/variants/nrf52840/diy/moonshine_NRF52_ebyte/variant.cpp
new file mode 100644
index 000000000..0a566b708
--- /dev/null
+++ b/variants/nrf52840/diy/moonshine_NRF52_ebyte/variant.cpp
@@ -0,0 +1,64 @@
+/*
+  Copyright (c) 2014-2015 Arduino LLC.  All right reserved.
+  Copyright (c) 2016 Sandeep Mistry All right reserved.
+  Copyright (c) 2018, Adafruit Industries (adafruit.com)
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  See the GNU Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#include "variant.h"
+#include "nrf.h"
+#include "wiring_constants.h"
+#include "wiring_digital.h"
+
+const uint32_t g_ADigitalPinMap[] = {
+    // P0
+    0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
+
+    // P1
+    32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47};
+
+void initVariant()
+{
+    // Configure P0.18 as RESET pin (UICR->PSELRESET).
+    // nrf52_recover (ERASEALL) clears UICR to 0xFFFFFFFF, disabling reset.
+    // SystemInit() already handles this via CONFIG_GPIO_AS_PINRESET; this is a
+    // safety net that runs before SoftDevice is enabled, so NVMC is accessible.
+    if ((NRF_UICR->PSELRESET[0] != 18) || (NRF_UICR->PSELRESET[1] != 18)) {
+        NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Wen << NVMC_CONFIG_WEN_Pos;
+        while (NRF_NVMC->READY == NVMC_READY_READY_Busy) {}
+        NRF_UICR->PSELRESET[0] = 18;
+        while (NRF_NVMC->READY == NVMC_READY_READY_Busy) {}
+        NRF_UICR->PSELRESET[1] = 18;
+        while (NRF_NVMC->READY == NVMC_READY_READY_Busy) {}
+        NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren << NVMC_CONFIG_WEN_Pos;
+        while (NRF_NVMC->READY == NVMC_READY_READY_Busy) {}
+        NVIC_SystemReset(); // Reboot to apply PSELRESET (hardware reconfigures P0.18)
+    }
+
+    // Initialize pairing LED pin (StatusLEDModule only calls digitalWrite, not pinMode)
+    pinMode(LED_PAIRING, OUTPUT);
+    digitalWrite(LED_PAIRING, LED_STATE_ON ^ 1); // OFF
+}
+
+void variant_shutdown()
+{
+    // Turn off pairing LED
+    nrf_gpio_pin_write(LED_PAIRING, LED_STATE_ON ^ 1);
+
+    nrf_gpio_cfg_input(BUTTON_PIN, NRF_GPIO_PIN_PULLUP); // Enable internal pull-up on the button pin
+    nrf_gpio_pin_sense_t sense = NRF_GPIO_PIN_SENSE_LOW; // Configure SENSE signal on low edge
+    nrf_gpio_cfg_sense_set(BUTTON_PIN, sense);           // Apply SENSE to wake up the device from the deep sleep
+}
diff --git a/variants/nrf52840/diy/moonshine_NRF52_ebyte/variant.h b/variants/nrf52840/diy/moonshine_NRF52_ebyte/variant.h
new file mode 100644
index 000000000..3d25736d4
--- /dev/null
+++ b/variants/nrf52840/diy/moonshine_NRF52_ebyte/variant.h
@@ -0,0 +1,136 @@
+#ifndef _VARIANT_MOONSHINE_NRF52_EBYTE_
+#define _VARIANT_MOONSHINE_NRF52_EBYTE_
+
+/** Master clock frequency */
+#define VARIANT_MCK (64000000ul)
+
+#define USE_LFXO // Board uses 32khz crystal for LF
+
+/*----------------------------------------------------------------------------
+ *        Headers
+ *----------------------------------------------------------------------------*/
+
+#include "WVariant.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif // __cplusplus
+
+/*
+MOONSHINE NRF52 EBYTE PIN ASSIGNMENT (Ebyte nRF52840 + E22-400M33S)
+
+| Pin   | Function    |        | Pin   | Function    |
+| ----- | ----------- | ------ | ----- | ----------- |
+| P0.03 | VBAT_ADC    |        | P0.22 | SPI_MOSI    |
+| P0.04 | IIC_SCL     |        | P0.24 | BUTTON      |
+| P0.08 | IIC_SDA     |        | P0.28 | LORA_BUSY   |
+| P0.13 | CHAG_DET    |        | P1.00 | SPI_MISO    |
+| P0.15 | LED         |        | P1.09 | LORA_RXEN   |
+| P0.17 | LORA_CS     |        | P1.10 | LORA_DIO1   |
+| P0.20 | SPI_SCK     |        | P1.11 | BUZZER      |
+|       |             |        | P1.13 | LORA_RESET  |
+*/
+
+// Number of pins defined in PinDescription array
+#define PINS_COUNT (48)
+#define NUM_DIGITAL_PINS (48)
+#define NUM_ANALOG_INPUTS (1)
+#define NUM_ANALOG_OUTPUTS (0)
+
+// No dedicated 3V3 enable pin on this board
+#define PIN_3V3_EN (-1)
+
+// Analog pins
+#define BATTERY_PIN (0 + 3) // P0.03 / AIN1 Battery ADC
+#define ADC_RESOLUTION 14
+#define BATTERY_SENSE_RESOLUTION_BITS 12
+#define BATTERY_SENSE_RESOLUTION 4096.0
+// Definition of milliVolt per LSB => 3.0V ADC range and 12-bit ADC resolution = 3000mV/4096
+#define VBAT_MV_PER_LSB (0.73242188F)
+// Voltage divider value => equal resistors divider = 0.5
+#define VBAT_DIVIDER (0.5F)
+// Compensation factor for the VBAT divider
+#define VBAT_DIVIDER_COMP (2.0F)
+// Fixed calculation of milliVolt from compensation value
+#define REAL_VBAT_MV_PER_LSB (VBAT_DIVIDER_COMP * VBAT_MV_PER_LSB)
+#undef AREF_VOLTAGE
+#define AREF_VOLTAGE 3.0
+#define VBAT_AR_INTERNAL AR_INTERNAL_3_0
+#define ADC_MULTIPLIER VBAT_DIVIDER_COMP // REAL_VBAT_MV_PER_LSB
+#define VBAT_RAW_TO_SCALED(x) (REAL_VBAT_MV_PER_LSB * x)
+
+// WIRE IC AND IIC PINS
+#define WIRE_INTERFACES_COUNT 1
+
+#define PIN_WIRE_SDA (0 + 8) // P0.08
+#define PIN_WIRE_SCL (0 + 4) // P0.04
+
+// LED - Bluetooth pairing status indicator
+#define LED_PAIRING (0 + 15) // P0.15
+#define LED_STATE_ON 1        // State when LED is lit (active high)
+
+// Charge detection (P0.13, active high = charging)
+#define EXT_CHRG_DETECT (0 + 13)
+#define EXT_CHRG_DETECT_VALUE HIGH
+
+// Buzzer
+#define PIN_BUZZER (32 + 11) // P1.11
+
+// Button
+#define BUTTON_PIN (0 + 24) // P0.24
+
+// UART interfaces - no physical serial ports wired
+#define PIN_SERIAL1_RX (-1)
+#define PIN_SERIAL1_TX (-1)
+#define PIN_SERIAL2_RX (-1)
+#define PIN_SERIAL2_TX (-1)
+
+// GPS - no GPS hardware
+#define GPS_RX_PIN (-1)
+#define GPS_TX_PIN (-1)
+#define PIN_GPS_EN (-1)
+#define PIN_GPS_PPS (-1)
+
+// Serial interfaces
+#define SPI_INTERFACES_COUNT 1
+
+#define PIN_SPI_MISO (32 + 0) // P1.00
+#define PIN_SPI_MOSI (0 + 22)  // P0.22
+#define PIN_SPI_SCK (0 + 20)   // P0.20
+
+#define LORA_MISO PIN_SPI_MISO
+#define LORA_MOSI PIN_SPI_MOSI
+#define LORA_SCK PIN_SPI_SCK
+#define LORA_CS (0 + 17) // P0.17
+
+// LORA MODULES
+#define USE_SX1268 // E22-400M33S uses SX1268 (433MHz)
+
+// E22-400M33S: 33dBm/2W module, PA gain varies with power (non-linear)
+// Per E22-M UserManual V1.2 power curve: chip 21dBm -> module 33.5dBm (gain ~12.5dB)
+// TX_GAIN_LORA=12 at max power point; SX126X_MAX_POWER + TX_GAIN_LORA = 33dBm
+#define SX126X_MAX_POWER 21
+#define TX_GAIN_LORA 12
+
+// SX126X CONFIG
+#define SX126X_CS (0 + 17)        // P0.17 FIXME - we really should define LORA_CS instead
+#define SX126X_DIO1 (32 + 10)     // P1.10 IRQ
+#define SX126X_DIO2_AS_RF_SWITCH // Note for E22 modules: DIO2 is not attached internally to TXEN for automatic TX/RX switching,
+                                 // so it needs connecting externally if it is used in this way
+#define SX126X_BUSY (0 + 28)      // P0.28 (AIN4)
+#define SX126X_RESET (32 + 13)    // P1.13
+#define SX126X_RXEN (32 + 9)      // P1.09 - E22 RXEN, MCU controls RX/TX RF switch path
+#define SX126X_TXEN RADIOLIB_NC   // DIO2 controls TXEN directly
+
+#define SX126X_DIO3_TCXO_VOLTAGE 1.8
+#define TCXO_OPTIONAL // make it so that the firmware can try both TCXO and XTAL
+
+#ifdef __cplusplus
+}
+#endif
+
+/*----------------------------------------------------------------------------
+ *        Arduino objects - C++ only
+ *----------------------------------------------------------------------------*/
+
+#endif